The ASCO Series 588 manifold cuts down maker engineering and assembly time, enhances energy performance, solution lifespan and reliability of products
FLORHAM PARK, N.J. (July 19, 2023) – Emerson has launched the ASCO™ Series 588 Stationary Oxygen Concentrator Manifold, the healthcare industry’s initially turnkey manifold solution made to optimize respiratory remedy unit styles and speed up products velocity to marketplace. Oxygen concentrators ought to promptly access patients who rely on them, so it is critical that they are commonly available and work reliably. The Series 588 manifold is specifically intended to simplify gadget engineering and assembly and improve device strength effectiveness, lifespan and reliability.
With no an integrated manifold, brands must mount valves individually into the fluidic route of oxygen concentrators and connect focused tubing to each orifice. Alternatively, the modest, light-weight architecture of the Collection 588 manifold effortlessly integrates into the fluidic path of oxygen concentrators, appreciably decreasing engineering and assembly time for health-related tools suppliers. The Series 588 capabilities two robust common support valves that exactly regulate the move of air among the compressor and the sieves. The manifold fastens effortlessly into the fluidic route, and a barbed port style and design tends to make it easy to link tubing.
“Oxygen concentrators are essential to the health and fitness and properly-staying of people with serious respiratory ailments, so it is vital they are quickly available for therapy. However, a single of the most significant facets of these equipment is an intelligently built fluidic path, and that requires time,” explained Thomas Beck, item advertising and marketing manager for analytical and health-related at Emerson. “With the ASCO Series 588 Manifold, our fluidic path experts have intended a small-electrical power, sturdy option that can help save clinical makers time and life time costs. Producers can speedily and only put in the built-in manifold by connecting just a few tubes.”
In addition to simplifying design and assembly, the Collection 588 can enable boost gadget electricity effectiveness and dependability whilst lengthening product daily life. The manifold’s compact footprint can permit smaller machine layouts without having sacrificing general performance. The valves’ low power demand from customers can prolong product battery existence and time involving fees, which can set a manufacturer’s products aside from competitor choices. And the higher trustworthiness of the valves can lengthen the all round lifespan of the oxygen concentrator and lessen manufacturer life time expenditures.
For far more details about the ASCO 588 Stationary Oxygen Concentrator Manifold, make sure you visit https://www.emerson.com/en-us/catalog/asco-588.
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About Emerson Emerson (NYSE: EMR) is a world-wide technological know-how and computer software corporation supplying revolutionary solutions for the world’s necessary industries. Via its major automation portfolio, together with its the vast majority stake in AspenTech, Emerson can help hybrid, process and discrete manufacturers improve operations, guard staff, reduce emissions and achieve their sustainability ambitions. For a lot more facts, visit Emerson.com.
The confined-edition craft beer celebrates trade pros and the RIDGID legacy
ELYRIA, OHIO – June 2, 2023 – RIDGID®, a portion of Emerson’s professional tools portfolio, is celebrating its 100th anniversary with RIDGID Wrenched 100 IPA, a constrained-version anniversary beer. The brew, made in collaboration with Unplugged Brewing Organization, pays tribute to the professional tradespeople who perform challenging and know how to unplug.
Unplugged is an Elyria-based mostly craft brewery and labored carefully with the RIDGID group to create the daring and regular brew – just like the brand name that encouraged it. “Our objective was to say thank you to the trade pros who more than the previous 100 many years have place their trust in our equipment each individual working day on jobsites close to the globe,” reported Becky Brotherton, director of brand name and advertising, RIDGID for Emerson. “Having a tiny, hardworking brewery in our individual backyard authorized us to make some thing that was really specific.”
The specialty craft beer is available for purchase in choose Northeast Ohio shops and on the web for immediate-to-property transport in 41 states as a result of December. To buy on-line, check out: rivalrybrews.com/goods/ridgid-wrenched-100. Take pleasure in responsibly. “RIDGID is an legendary title, recognized all over the environment, and we’re proud to assist them celebrate this milestone anniversary,” stated Carlos Lopez, proprietor of Unplugged Brewery. “As a little enterprise operator, it’s been an honor to create this brew for a firm that celebrates its shoppers in this unique way.”
In addition to the RIDGID Wrenched 100 IPA, a restricted version RIDGID beer tap is also obtainable to buy for use or display. The tap is created at RIDGID world-wide headquarters in Elyria, Ohio, on the exact production lines used to develop the brand’s legendary wrenches. It fits a 3/8″-16 overall body thread or can sit upright for show in a dwelling or shop. Commemorative pint glasses, t-shirts, indications, and hats are also out there at ridgidgear.com. In 1923, the Ridge Instrument Business invented the present day straight pipe wrench, introducing it to the planet beneath their brand, RIDGID. Given that then, each and every stage ahead has been taken with the tradesperson in brain. Nowadays, RIDGID’s pipe wrench design and style is the finest-marketing pipe wrench in the entire world, and several of the wrenches that had been sold again in the 1920s and 30s are nonetheless in use today.
This calendar year, RIDGID is celebrating 100 a long time of building and making revolutionary resources dependable on jobsites all around the environment and handed down from era to generation. To commemorate the event, RIDGID is paying out 2023 celebrating the trades, their effect on our entire world, and the brand’s legacy.
To learn a lot more about the 100th anniversary, men and women are invited to visit RIDGID.com/100 or their social channels – @RIDGIDTools on Fb, @RIDGIDTools on Instagram, and @RIDGIDTools on TikTok. Emerson’s experienced equipment business enterprise, which contains RIDGID as very well as the Greenlee® and Klauke® brands, presents the industry’s broadest portfolio of sophisticated, trustworthy equipment and systems for the mechanical, electrical and plumbing trades globally. Take a look at emerson.com/professionaltools for far more details.
RIDGID For 100 years, RIDGID has been supplying certainty and effectiveness to the qualified trades by delivering modern plumbing, mechanical and HVAC tools. Inventing the fashionable pipe wrench in 1923, RIDGID right now has more than 100 patents and 300 products that continue on to provide purpose-developed instruments to assist the competent trades work with additional relieve and efficiency. They are section of the Emerson expert instruments portfolio that also includes Greenlee® and Klauke®. Discover more, take a look at RIDGID.com/100.
About Emerson Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states of america), is a international technology and software program organization providing revolutionary answers for buyers in industrial, commercial and household markets. A chief in industrial automation, Emerson aids process, hybrid and discrete brands improve operations, safeguard staff, decrease emissions and attain their sustainability objectives as a result of its Automation Solutions and AspenTech businesses. Emerson’s Commercial & Household Remedies small business will help ensure human ease and comfort and well being, guard meals high quality and security, advance energy effectiveness and build sustainable infrastructure. For additional details, take a look at Emerson.com.
RIDGID®, a element of Emerson’s professional instruments portfolio, is celebrating a main milestone this calendar year: 100 decades of planning and making innovative applications dependable on jobsites all-around the globe and handed down from generation to era. To commemorate the situation, RIDGID will spend the year 2023 celebrating the trades, their influence on our world, and the brand’s legacy.
“A great deal has adjusted around the past century, but just one detail that has remained frequent is the commitment of the experienced trades to establish a more robust tomorrow. RIDGID is honored to be by their side each and every move of the way,” reported Heather McLin, vice-president of marketing, expert tools for Emerson. “From our iconic pipe wrench that begun it all to our newest software options, each individual item we make is made to aid trade pros get employment carried out a lot easier and additional effectively. That is a legacy that will by no means adjust.”
Wherever It All Started out – The RIDGID Wrench
In 1923, the Ridge Instrument Company invented the modern day straight pipe wrench, introducing it to the earth under their model RIDGID. Due to the fact then, each phase ahead has been with the tradesperson in mind. Nowadays, RIDGID’s pipe wrench design is the ideal-promoting pipe wrench in the world and many of the wrenches that had been bought again in the 1920s and 30s are even now in use nowadays.
The RIDGID commitment to excellent has never ever wavered, RIDGID’s signature pink heavy-duty straight pipe wrench bodies are nonetheless forged at its ductile iron manufacturing unit in Erie, PA, assembled at its headquarters in Elyria, OH, and then shipped from its distribution facility in Cambridge, OH.
Alongside with these destinations, RIDGID has developed about the previous century with world services that aid preserve up with need from all around the earth. The company’s item line has also developed. RIDGID released electrical power threading methods in 1948 drain cleaning machines in 1967 press resources in 1999 and most recently, pipe patching last year as it proceeds its proud custom of innovation.
Now, more than 100 patents and 100 decades afterwards, RIDGID continues to produce reason-crafted equipment that are acknowledged about the globe for their skill to finish employment a lot more immediately and reliably. They at the moment supply much more than 300 equipment for the plumbing, mechanical and HVAC professional.
Trusted by the Trades
From specialty pipe wrenches and drain cleansing gear to pipe inspection and press remedies, just about every tool that carries the RIDGID name is created and crafted for strength, effectiveness and legacy.
Irrespective of whether it is made use of for clearing a drain line at someone’s residence, maintaining a medical center up-and-operating by restoring a pipe with a push software, or putting in pipe for a new industrial develop, trade gurus depend on RIDGID equipment to enable them establish and manage infrastructure around the world.
Hunting to the foreseeable future, RIDGID remains committed to the trades and to setting up the instruments of performance experienced trade operate needs.
“Our 1st hundred a long time is just the beginning,” stated Becky Brotherton, director of engagement internet marketing, RIDGID for Emerson. “From working day one particular, RIDGID has experienced a devoted staff that strives for greatest in good quality, solution innovations, technical help and shopper service. We are committed to the pros making use of our resources as effectively as the long run of the trades. There’s a cause why RIDGID has been trustworthy by the trades for 100 a long time and why they will be for the next 100 yrs also.”
Constructed for What’s Next™
The company not too long ago released a pipe patching package, a new product group for the manufacturer, and are also established to introduce additional new applications this calendar year. Every single mirror the forward thinking of the model and their motivation to conference the desires of present-day and long term consumers.
RIDGID is also involved in in depth initiatives across numerous workforce advancement initiatives. They offer continuing instruction and palms-on coaching for plumbers, along with supporting scholarships and apprenticeships with quite a few national corporations like SkillsUSA, The Plumbing-Heating-Cooling Contractors Academic Foundation, and the Mechanical Contractors Association of The usa.
In recognition of its milestone anniversary, RIDGID will be keeping giveaways of commemorative anniversary wrenches and other model swag through the year. Early this 12 months they will also be launching “RIDGID Wrenched 100,” a specialty beer created in collaboration with Unplugged Brewing Corporation positioned a lot less than a mile away from RIDGID headquarters in Elyria. In addition, the firm will host commemorative gatherings at main trade displays.
To learn far more, folks are invited to visit RIDGID.com/100 or their social channels – @RIDGIDTools on Fb, @RIDGIDTools on Instagram, and @RIDGIDTools on TikTok.
Emerson’s qualified instruments business enterprise, which incorporates RIDGID as effectively as the Greenlee® and Klauke® makes, gives the industry’s broadest portfolio of advanced, reputable resources and systems for the mechanical, electrical and plumbing trades globally. Take a look at emerson.com/professionaltools for far more data.
For 100 decades, RIDGID has been delivering certainty and efficiency to the qualified trades by providing innovative plumbing, mechanical and HVAC equipment. Inventing the modern pipe wrench in 1923, RIDGID today has much more than 100 patents and 300 solutions that continue to supply objective-built equipment to support the experienced trades function with extra simplicity and effectiveness. They are component of the Emerson skilled instruments portfolio that also contains Greenlee® and Klauke®. Discover far more, stop by RIDGID.com/100.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states of america), is a global technological innovation and software package organization furnishing ground breaking methods for prospects in industrial, industrial and household markets. A chief in industrial automation, Emerson assists method, hybrid and discrete companies enhance operations, safeguard staff, reduce emissions and reach their sustainability plans through its Automation Solutions and AspenTech corporations. Emerson’s Professional & Residential Remedies company will help assure human consolation and health and fitness, protect foods quality and basic safety, progress electricity effectiveness and produce sustainable infrastructure. For extra details, take a look at Emerson.com.
Emerson (NYSE: EMR) now declared the start of its White-Rogers™ 50M56X-843 common one phase sizzling area ignition (HSI) integrated furnace command, a revolutionary command that delivers the first single-phase universal substitute that can be configured for possibly PSC or ECMx blower motors.
The HSI furnace management gives the capability to change over 550 aspect quantities with only a single management, reducing inventory by supplying utmost regulate substitution coverage. With no supplemental harnesses required, this universal regulate makes use of the existing OEM harnesses, providing contactors an less complicated set up process.
The control is equipped with innovative features together with in close proximity to subject conversation (NFC), which makes a wi-fi link involving the command and a cell product. Utilizing the White-Rogers Join cellular application, the management lets contractors to immediately configure the control, with no electric power, and give precise diagnostics with whole fault code textual content and troubleshooting strategies. A new attribute inside of the application is termed Automobile-Set, which enables customers enter the replacement section number to routinely configure the HSI furnace command to the substitute part’s initial configurations. Hundreds of OEM configurations have been preloaded into the app to just take the guesswork out of configuration.
“The White-Rodgers common HSI integrated furnace handle is the greatest common solitary-phase substitution for equally PSC and ECMx blower motors that permits contractors to carry fewer parts and make a lot more replacements with no owning to return to the warehouse or distributor, conserving time and funds,” mentioned Craig Rossman, president, White-Rodgers for Emerson. “Through the mix of our new furnace handle and White-Rogers Join, the installation system is now uncomplicated and problem-cost-free.”
For extra data on how White-Rodgers Hook up simplifies set up and diagnostics for certified HVAC contractors, click on below. The Universal HSI Integrated Furnace Regulate is now available on the Emerson website, master much more below.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (Usa), is a worldwide know-how and computer software organization delivering revolutionary answers for shoppers in industrial, business and household marketplaces. A leader in industrial automation, Emerson allows approach, hybrid and discrete makers enhance operations, secure personnel, minimize emissions and realize their sustainability aims via its Automation Alternatives and AspenTech firms. Emerson’s Industrial & Residential Remedies business enterprise aids guarantee human ease and comfort and wellbeing, safeguard food items top quality and safety, progress strength effectiveness and produce sustainable infrastructure. For more information, visit Emerson.com.
A happy supporter of the trades, RIDGID®, section of Emerson’s skilled instruments portfolio, is delighted to announce its continued partnership with Pfister Faucets® on the most current period of their well-liked “American Plumber Stories” docuseries. The makes commenced doing work alongside one another for the duration of time two of the collection and are psyched to kick-off season three today.
Highlighting plumbers whose lives were transformed permanently by the trade, time three builds on the particular stories shared all through the 1st two seasons that have garnered hundreds of thousands of sights. Released in 2021, the collection is hosted by region songs entertainer and Military veteran Craig Morgan and aims to market the advantages of studying the plumbing trade to the subsequent generation of experts.
“The satisfaction and enthusiasm of the plumbers showcased in “American Plumber Stories” carries on to encourage us at RIDGID,” explained Becky Brotherton, director of engagement advertising, RIDGID for Emerson. “Our team just can’t hold out for people today to hear about each plumber’s knowledge in the market and why they pursued a occupation in the discipline.”
RIDGID is involved in intensive efforts throughout several workforce development initiatives. They give continuing instruction and hands-on teaching for plumbers, along with supporting scholarships and apprenticeships with quite a few nationwide corporations which include SkillsUSA, The Plumbing-Heating-Cooling Contractors Academic Foundation, and the Mechanical Contractors Association of The united states.
To see “American Plumber Tales,” stop by AmericanPlumberStories.com. Episodes are also obtainable on various social media channels: YouTube, Instagram, Fb, and LinkedIn.
To understand far more about RIDGID, check out RIDGID.com.
Emerson’s expert resources business enterprise, which features RIDGID as very well as the Greenlee® and Klauke® makes, delivers the industry’s broadest portfolio of highly developed, reputable equipment and technologies for the mechanical, electrical and plumbing trades globally. Visit emerson.com/professionaltools for a lot more info.
RIDGID®, Greenlee®, and Klauke® are emblems of Emerson or its subsidiaries. All other logos belong to their respective holders.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states), is a worldwide technological innovation and application firm furnishing impressive answers for buyers in industrial, business and household markets. A chief in industrial automation, Emerson can help procedure, hybrid and discrete suppliers optimize operations, secure staff, lower emissions and achieve their sustainability objectives by means of its Automation Alternatives and AspenTech organizations. Emerson’s Industrial & Household Options enterprise assists be certain human convenience and well being, defend foods high-quality and safety, advance vitality efficiency and build sustainable infrastructure. For a lot more information, check out Emerson.com.
About Craig Morgan
A multi-faceted entertainer, Craig Morgan has made a title for himself as a nation audio icon, Television set individuality, celebrated outdoorsman and patriotic Army veteran. 1 of region music’s greatest-liked artists, Morgan has charted 25 tunes on Billboard and thrills substantial crowds with signature hits like “Bonfire,” Virtually Household,” “Redneck Yacht Club,” “International Harvester,” “This Ole Boy,” “Wake Up Loving You,” and the 4 7 days No. 1, “That’s What I Adore About Sunday.” Final yr, Morgan introduced his initial new audio in over a few a long time – God, Relatives, Place. The album combines five new songs – such as “The Father, My Son, and the Holy Ghost,” Craig’s faith-loaded tribute to his son Jerry, with remastered variations of some of the most highly effective tracks he recorded for Damaged Bow from 2002 to 2008, combining his previous hits mixed with potential signatures. Craig delivers his take on Gavin DeGraw’s smash, “Soldier.” He also teamed up with lively responsibility Military Airborne Rangers Justin Wright and Andrew Yacovone to provide up the summery “Sippin’ On The Very simple Life.”
Craig obtained a person of state music’s greatest honors when he was inducted as a member of the Grand Ole Opry in 2008. Prior to getting to be a place music star and Television feeling, Morgan expended seventeen many years serving our region in the Military and Military Reserves. Morgan stays an avid supporter of America’s armed forces staff and has produced 16 abroad journeys to execute for our troops. He is a recipient of the 2006 USO Benefit Award and in 2018 was awarded the Army’s Outstanding Civilian Company Medal, a single of the best awards the Section of the Military can bestow upon a civilian, in recognition of his significant dedication to our armed forces guys and females all-around the planet.
Discover far more at craigmorgan.com and have interaction with Craig on YUDU by browsing YUDUsocial.com in addition to Fb, Instagram, Twitter.
An introduction to the characteristics, nuances and applications of an emerging natural refrigerant
By Andre Patenaude, Director, Solutions Strategy, Emerson
The use of CO2 as a refrigerant (R-744) in commercial refrigeration is expected to rise significantly in the U.S. over the next several years. With a global warming potential (GWP) of 1 and zero ozone depletion potential (ODP), CO2 is one of several emerging refrigerants capable of enabling food retailers to meet their sustainability goals and comply with environmental regulations.
Although CO2 refrigeration has been a known commodity on the world stage for many decades, many supermarket owners, operators and service technicians in the U.S. have had very little (if any) exposure to it. The characteristics of CO2 refrigeration are quite different from traditional hydrofluorocarbon (HFC)-based systems, which has created reservations about applying it within U.S. food retail outlets.
Today, as U.S. food retail stakeholders transition away from high-GWP HFC systems, they have many questions about emerging CO2 refrigeration technologies. This article, combined with our CO2 Chats video series, is designed to demystify CO2 refrigeration and provide the basic information needed to help establish a foundational understanding.
Unique properties of R-744
Compared to legacy HFC refrigerants, R-744 has a multitude of distinct thermo-physical properties and performance characteristics.
Low critical point
Among its many distinguishing characteristics, R-744 has a low critical point of 87.8 °F — which from a refrigeration perspective, is a relatively low temperature. When the ambient (outside) temperature rises above approximately 75 °F, system conditions cause the refrigerant to enter the gas cooler as a supercritical fluid (at or above 87.8 °F), where its pressure and temperature relationships can rise and fall independently of each other. R-744 is at saturation when it is below the critical point, which is referred to as subcritical mode; above 87.8 °F, the refrigerant transitions to transcritical mode.
High operating pressures
CO2 system operating pressures are significantly higher than traditional HFC systems (i.e., those using R-404A or R-410A). Although this often gives service technicians pause when they first encounter CO2 transcritical booster systems, understanding where those pressures occur can give them a greater comfort level. As medium-temperature (MT) compressors discharge into a gas cooler on the roof, pressures could reach 1,400 psi on a 95 °F summer day. MT discharge lines are constructed with stainless steel or special ferrous alloy copper to handle these pressures.
Within a facility and/or machine room, a high-pressure expansion valve reduces the refrigerant pressure exiting the gas cooler to around 550 psi and transfers it to a receiver tank, commonly referred to as a flash tank. Liquid refrigerant exits at the bottom of the flash tank via a main liquid line at 40 °F (550 psi) and feeds all the MT evaporators, which operate at about 22 °F (420 psi). It also feeds all the low-temperature (LT) evaporators, which operate near -20 °F, at an even lower pressure of 200 psi. Although system pressures are higher than what most technicians are accustomed to, proper training and tools should mitigate the reservations of CO2’s high pressures.
High triple point
R-744 has a high triple point at which the refrigerant’s gas, liquid and solid states coexist — occurring at -69.8 °F and 60.4 psi. Although -69.8 °F is well below normal operating ranges, its corresponding saturation pressure is not 60.4 psi. The hyper-reactivity of a CO2 system can cause the pressure to reach 60.4 psi or lower. When this occurs due to improper maintenance, R-744 turns into dry ice, stops the refrigerant flow, and causes a variety of potential problems.
R-744 has other unique performance and operating characteristics that dictate system design strategies. Because it has a higher density than typical HFC refrigerants, CO2 requires the use of smaller compressor displacements — although the motor is sized similarly to carry the workload. CO2’s higher density means that smaller pipe diameters can be used, especially on the suction side of the system. Due to its high pressures, system components must be rated for a higher maximum working pressure.
Servicing best practices
CO2 transcritical booster system installations are expected to increase significantly in the next few years. It’s only a matter of time before technicians will be asked to perform service on them. Technicians should be aware of the following basic best practices when servicing these systems.
R-744 tank storage and/or refrigerant cylinder best practices are similar to those of legacy HFCs, including stacking procedures, safety precautions and assigning designated storage areas. To handle its high pressures, CO2 tanks are reinforced and weigh significantly more than HFC tanks. Empty CO2 tanks can weigh close to 123 lbs. and can reach nearly 180 lbs. when fully charged. Supermarkets that prefer to have an entire system charge in reserve could potentially require 2,000 lbs. of refrigerant. Storing that amount would require 40 cylinders weighing 7,200 lbs. — or 3.6 tons. Contractors need to understand where to store the reserve refrigerant and if the sheer volume and weight could affect building codes and/or a building’s structural integrity.
Charging a CO2 refrigeration system
When charging a CO2 refrigeration system, the most important consideration a technician should keep in mind is the refrigerant’s triple point pressure (60.4 psi) and how to guard against turning the charge to dry ice. Instead of charging with liquid CO2 when the system is below 60.4 psi, contractors should charge with vapor until the system reaches CO2’s triple point. Failure to do so is likely to result in the formation of dry ice in the charging line, a common (and potentially costly) mistake for those unfamiliar with CO2 installations. Most equipment manufacturers recommend charging the system with vapor until it reaches at least 100 psi. After achieving 100 psi with vapor, which has equalized throughout the entire system, technicians can switch charging with liquid to speed up the process.
Dealing with trapped liquid
Because CO2’s coefficient of expansion (COE) is higher than a typical HFC refrigerant, it has a higher probability of refrigerant pressure increasing rapidly between two valves. If this occurs, the pressure can increase 145 psi for every 1.8 °F increase in temperature. As a result, sections of a system need to be fitted with appropriate check valves or pressure-relief valves for safe system operation and service.
Detecting leaks in CO2 systems
Because R-744 refrigerant is colorless, odorless and heavier than air, it can be difficult for building occupants to detect leaks. CO2 transcritical booster systems must utilize integrated leak detection systems with detection devices mounted 18 inches off the ground. Like HFC systems, it’s important to immediately detect and mitigate CO2 leaks as they occur.
Emerson has designed CO2-specific leak detection technology that quickly can sense the presence of higher levels of CO2 in a machine room or walk-in box. Emerson offers both a stand-alone CO2 leak detection solution as well as devices that can be seamlessly integrated into a building management system (BMS), such as the Lumity™ supervisory control platform.
Safe handling best practices
Technicians should take proper precautions when handling high-pressure CO2 refrigeration systems. Even when a system is shut off, standstill pressures are still likely to remain high and should be handled accordingly. Because it is heavier than air, CO2 can quickly displace O2 when it is released in excessive amounts. Thus, technicians should avoid handling it in confined spaces and ensure they use proper leak detection procedures and equipment. In addition, CO2 vapor temperature at atmospheric pressure is -109.3 °F; technicians should follow proper service procedures and always wear personal protective equipment (PPE) to limit the potential for skin burns. With proper training, tools and equipment design — and when maintained and operated properly — CO2 is a safe and natural refrigerant alternative.
Fundamentals of CO2 system operation
Because of R-744’s many distinguishing performance characteristics, CO2 transcritical booster system design can seem more complex to operate and service. Fortunately, system control technologies have evolved to manage nearly all aspects of operation and make it easy for operators to manage these complexities. Even so, end users and contractors should be aware of the basic principles when operating CO2 transcritical booster systems.
The difference between subcritical and transcritical modes
CO2 transcritical booster systems are designed to transition between subcritical and transcritical modes of operation. When R-744 is at saturation and below the critical point of 87.8 °F, a system operates in subcritical mode. Above this refrigerant temperature, R-744 is no longer at saturation and the system enters transcritical mode. Unlike traditional HFC systems that have much higher critical points, CO2 systems could operate for extended periods while in a transcritical mode in a typical year.
Managing high system pressures
R-744 is a very dynamic refrigerant that reacts quickly to changes in pressures and temperatures. During the commissioning of a CO2 transcritical booster system, it’s important to establish a stable baseline of performance. To achieve this, technicians should focus their efforts on the configurations of the gas cooler, high-pressure valve and flash tank, including:
– Controlling variable fan speeds
– Modulating the high-pressure valve
– Modulating the bypass gas valve
– Maintaining a consistent flash tank pressure
– Assuring smooth compressor staging
Since all those aspects are managed by electronic controls, technicians will need to interface with these controls to bring the key system components into equilibrium.
Preserving CO2 system charge during a shutdown
Power outages and system shutdowns can have significant impacts on a CO2 transcritical booster system. In the event of an extended shutdown, CO2 transcritical booster systems are designed with pressure-relief valves in each zone to allow for the safe release of refrigerant. During brief shutdowns, system pressures typically don’t rise quickly enough to cause concern. A system’s existing thermal inertia — from its flash tank, liquid line, MT and LT evaporators — will sustain proper pressures for a significant period of time. The temperatures outside and inside the building, among other factors, are likely to impact how long pressure will be sustained.
Another method for keeping pressures in check and preventing the release of system charge during an extended power outage is through an auxiliary condensing unit powered by a backup generator. The condensing unit typically utilizes a dedicated heat exchanger connected to the system’s flash tank or receiver. When the system is powered down, warm gas from the receiver naturally migrates through the cold heat exchanger, cools the flash tank vapor, condenses it into a liquid, and returns it to the flash tank at a colder temperature and lower saturation pressure. This helps to prevent the loss of refrigerant through pressure-relief valves.
Preventing flooded evaporators during a power outage
CO2 transcritical booster systems are designed with specific strategies to prevent CO2 evaporators from flooding during a power outage. When the power drops in a system using a stepper-motor electronic expansion valve (EEV), the EEV typically will hold its exact position. Accordingly, CO2 transcritical booster systems are often designed to have a solenoid valve at the inlet of the EEV, which can be set to close upon losing power to help prevent flooding of the evaporator. Another strategy that would work is to install a battery backup on the case control to shut off refrigerant flow when necessary.
Systems equipped with pulse-width modulated (PWM) valves — which are in effect high cycle rate solenoid valves — are designed to automatically close to prevent liquid from flooding the evaporator, thereby protecting the compressor when power comes back on. Before the system is up and running again, service contractors should make sure that they clearly understand how the valves in each system will operate and/or close — and to confirm that any floodback mitigation strategies have worked as expected.
Leading CO2 system design strategies
Refrigeration system designers have made tremendous strides in exploiting CO2’s unique properties into sustainable refrigeration architectures. Today, system design strategies have evolved into two primary architectures that differ greatly from traditional HFC-based systems.
CO2 transcritical booster system
CO2 transcritical booster systems are designed so that MT compressors discharge into a gas cooler, typically located on the roof of a facility. With system pressures potentially reaching 1,400 psi on a hot summer day, R-744 must be cooled before it can be condensed. Thus, refrigerant is circulated back into the building through a high-pressure valve, which drops the pressure to a useable state (550 psi) and deposits a refrigerant mixture of vapor and liquid inside the flash tank at 40 °F equivalent saturation.
Next, the system circulates the 40 °F liquid through insulated liquid lines to feed all the MT and LT cases and provide the cooling loads. The MT cases are equipped with an EEV, and the MT suction gas feeds the MT compressors. On the LT side where loads could be -20 °F, the cases are also fitted with an EEV and are supported by a separate set of LT compressors that discharge into the MT suction group.
The system also utilizes a bypass line that’s designed to relieve the pressure on the flash tank. As ambient temperatures rise and fall, flash tank pressures can also fluctuate. Thus, the bypass line helps to release the excess flash tank pressure through a bypass gas valve and stabilize it to approximately 550 psi (pressure may vary based on system design), where it is directed into the MT suction group. In effect, the MT compressors are being fed by three sources:
– The total heat of rejection from the LT compressors
– The MT suction from the evaporators
– The excess flash gas via the bypass line
The system is called a booster system because the LT compressors are not going directly to the gas cooler, like they would on a typical HFC system. Instead, the LT compressors discharge into the MT compressors, thereby allowing the MT compressors to boost the refrigerant to the gas cooler.
CO2 cascade system
A CO2 cascade system offers an alternate architecture for retailers who want to deploy a low-GWP option but may not want a full CO2 transcritical booster system. In a CO2 cascade system, the high (MT) and low (LT) stages are completely independent of each other, except for one heat exchanger that connects them.
Typically, the high stage of a supermarket system would use a lower-GWP, medium-pressure HFC refrigerant, such as R-513A. Not only does it serve the MT loads, but it is also used to condense the CO2 in the low stage. In the low stage, CO2 is discharged, condensed in a condenser, and then recirculated for LT loads. R-744 is a very effective refrigerant for LT loads; and with a GWP of 1, it contributes to a cascade architecture that could meet many retailers’ sustainability objectives.
Leveraging heat reclaim
CO2 systems are excellent candidates for heat reclamation strategies. In fact, most modern CO2 systems utilize some form of heat reclamation — whether it’s for providing heated air, hot water, or even heating slabs beneath freezers. Many retailers are capitalizing on this opportunity to lower their emissions and reliance on fossil fuels. In addition, the liquid quality of R-744 is not affected when head pressures are raised to generate more heating capacity. Instead, the flash tank or receiver is designed to keep refrigerant at a consistent pressure, even while head pressures may fluctuate while operating in transcritical mode.
Optimizing the COP via the high-pressure control
When R-744 exceeds its critical point of 87.8 °F, the refrigerant enters a supercritical phase where the relationship between pressure and temperature becomes uncoupled. To optimize the coefficient of performance (COP) in a CO2 transcritical booster system, we must understand the function of the gas cooler and the characteristics of R-744 as it enters this supercritical zone.
Below the critical point, the gas cooler acts like a condenser. Thus, R-744 exists in a predictable state of saturation — if you know the pressure, you can determine the temperature (and vice versa). In its subcritical state, the high-pressure control algorithm automates system pressures according to a specified sub-cooling setpoint.
Above 87.8 °F, the pressure can change without having an impact on the temperature (and vice versa). System designers can take advantage of this phenomenon when optimizing COP. When operating transcritical mode, the high-pressure control always seeks to maintain an optimal pressure setting for each gas cooler outlet temperature. Today’s sophisticated high-pressure controls are continually adjusting gas cooler outlet pressures in transcritical mode to produce the most optimal BTU/W option.
Maintaining energy efficiencies in warm climates
The energy consumption of a refrigeration system is a key factor when evaluating its total cost of ownership (TCO). For a CO2 transcritical booster system, energy efficiency is dependent on many factors, including:
– The ambient temperature range
– The humidity of the region
– The availability of and cost of water
– The cost of peak demand charges
Among these factors, the goal of improving system energy efficiencies in warmer climates has become a major focus area for equipment manufacturers. Leading system design optimization strategies typically include:
– Adiabatic gas cooler
– Parallel compression
– Mechanical sub-cooling
– Gas ejector
– Zero superheat control of MT evaporators (annualized benefit)
– Liquid ejector (annualized benefit)
Retailers must consider all these variables and strategies when they work with their equipment suppliers and design engineers to specify a CO2 transcritical booster system.
Adiabatic gas cooler
An adiabatic gas cooler utilizes wetted pre-cooling pads outside the condenser coils to delay a CO2 transcritical booster system from entering into transcritical mode. When the ambient temperature reaches about 72 °F, a water solenoid valve is energized, causing water to be sprayed along the top of the adiabatic pads. As the water trickles down the pads, a condenser pulls air through these wetted pads, causing moist, cooler air to hit the coils. In turn, the condenser reacts to this cooler air and drops the temperature and pressure, making the system significantly more energy-efficient by operating at lower pressures.
In a CO2 transcritical booster system, parallel compression refers to the practice of adding a separate suction group that is “parallel” to the existing MT suction. Thus, instead of the bypass gas circulating from the flash tank to the MT suction as in a standard transcritical booster system, the parallel compressor suction group compresses excess flash gas and circulates it directly to the gas cooler.
This allows the parallel compressor to operate at a suction pressure of about 550 psi (the same as the flash tank), instead of the MT suction of 420 psi. The net effect of leveraging the higher suction pressure is achieving higher compressor capacity for less effort, which translates into a lower heat of compression and reduced energy consumption. Parallel compression is considered a foundational high ambient strategy with which other energy mitigation methods can be used in combination. When annualized in a typical environment, it can potentially save up to 10% in energy costs.
To learn more about the topics discussed herein, please view the companion installments in our CO2 Chats video series. For more information about Emerson’s comprehensive CO2 products and capabilities, please visit Climate.Emerson.com/CO2Solutions.
Andre is responsible for supporting system-related innovation and leveraging Emerson’s global cold chain to drive adoption of integrated solutions in North America. He most recently led marketing efforts pertaining to Emerson’s food retail and chiller markets. Prior to that, he had managed Emerson’s global CO2 development.
Andre has more than 35 years of industry experience in sales, marketing, training and business development of HVACR system architectures and applications with compression and component technologies. He is a certified Mechanical Engineering Technologist C.E.T. (since 1984), and is a member of AHRI, ASHRAE and RSES.
RIDGID®, element of Emerson’s expert instruments portfolio, introduces an all-inclusive, start out-to-complete alternative for faster and easier trenchless repairs. The RIDGID Pipe Patching Method is the most flexible method on the market, featuring additional types of repairs with considerably less elements and tools. Featuring a tough fiberglass patch, it is best for repairing small sections of damaged pipe in household, professional, and industrial options.
The Pipe Patching Program provides all the consumables and tools essential for a just one-time patch in 2-inch to 6-inch broken pipe up to 6-ft in length and can be made use of on all sections of pipes, which includes straights, bends transitions and p-traps. The entire process can be finished in two several hours or a lot less, offers a speedy return on expenditure and is easy to find out.
“Pipe patching not only will save time and revenue, it also is a more simple remedy and a person that can effortlessly be additional to a company’s existing pipe inspection and drain cleansing providers,” reported Jeff Albertini, advertising and marketing director, underground systems, RIDGID for Emerson. “The RIDGID Pipe Patching Technique enables industry experts to present up on a jobsite and finish all 3 steps of a pipe restore – cleanse, examine and patch – in a several several hours.”
Pipe patching is an effective, sturdy alternative alternative that will save time and labor, although also offering shopper charge-price savings, environmental reward, and nominal disturbance to encompassing areas and organization productiveness. While a terrific stand-by itself small business, pipe patching is a differentiator for firms now taking part in pipe rehabilitation and a wonderful first step for those people new to the trenchless marketplace.
To order or discover extra about the pipe patching resolution, take a look at RIDGID.com, or contact toll-free: 1-800-4RIDGID.
Emerson’s specialist tools enterprise, which incorporates RIDGID as properly as the Greenlee® and Klauke® models, gives the industry’s broadest portfolio of superior, reliable instruments and technologies for the mechanical, electrical and plumbing trades globally. Stop by emerson.com/professionaltools for more data.
RIDGID®, Greenlee®, and Klauke® are logos of Emerson or its subsidiaries. All other logos belong to their respective holders.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states of america), is a world-wide technological know-how and software package firm offering revolutionary remedies for consumers in industrial, professional and household markets. A leader in industrial automation, Emerson can help process, hybrid and discrete makers improve operations, guard personnel, lessen emissions and reach their sustainability targets through its Automation Options and AspenTech organizations. Emerson’s Business & Residential Alternatives company assists make certain human comfort and ease and overall health, defend foodstuff top quality and protection, advance electrical power performance and develop sustainable infrastructure. For much more facts, pay a visit to Emerson.com.
Emerson (NYSE: EMR) declared the launch of its new E360 Website, a assumed management platform that extends its previous Climate Discussions web site to consist of a broader assortment of sector subjects, increasing its reach to refrigeration, air conditioning and other HVACR stakeholders. The platform is supposed to help beating marketplace worries such as refrigerant polices, technician scarcity/trade abilities gap, sustainability initiatives, business developments, technologies advancements, and improved efficiencies.
The blog gives enhanced navigation and written content accessibility with featured posts and categorization by precise matters this sort of as chilly chain, refrigeration, heating and air conditioning, laws, sector and technician strategies and alternatives spotlights. Further more filtering is obtainable to slim in on marketplaces, regulatory forms and technological concentrate.
“We are fired up about the start of our new E360 Blog site that will encompass written content all over Emerson’s many market initiatives,” reported John Schneider, president, HVACR Systems, Americas for Emerson “This site is actually an extension of our study and tests attempts to assistance first machines companies, contractors, stop customers and industry leaders as they keep on to navigate new restrictions, sustainability initiatives and other business problems.”
The blog will deliver uncomplicated accessibility to other Emerson field assistance platforms, which include their E360 Written content Hub, HVAC On Air podcast series and AC & Heating Join blog internet site.
Emerson carries on to increase its concentration on rigorous item testing and substantial exploration to offer you trustworthy, high-performance and decreased-GWP refrigerant answers to meet up with efficiency and refrigerant polices. The website and other platforms will emphasize how those people initiatives are functioning to profit the HVACR field. Look at out the new blog system right here.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states of america), is a worldwide technologies and computer software business giving modern options for customers in industrial, industrial and residential marketplaces. A chief in industrial automation, Emerson can help system, hybrid and discrete makers optimize operations, protect staff, lower emissions and obtain their sustainability plans via its Automation Answers and AspenTech companies. Emerson’s Professional & Household Options business enterprise helps make sure human consolation and wellbeing, defend foodstuff excellent and basic safety, advance electricity efficiency and create sustainable infrastructure. For a lot more details, visit Emerson.com.
RIDGID®, a portion of Emerson’s skilled equipment portfolio, lately hosted their fifth yearly RIDGID Knowledge journey, a VIP event that invites select users of the competent trades to acquire for pleasurable, camaraderie and fingers-on activities. The function also serves as a “thank you” to the trades for the role they enjoy in making and keeping our country’s infrastructure.
The contest, which attracts entries from tradespeople across the region, concludes with RIDGID managing nine company to a three-day, all-bills-compensated trip to RIDGID headquarters. The emphasize of the take a look at is a factory tour that invites every guest to establish their personal legendary RIDGID tailored pipe wrench. Attendees also received a sneak peek at the newest RIDGID tool innovations and delivered their viewpoints on merchandise that is at the moment in development. Night situations provided treating the company to a preview of the company’s 100 Year Anniversary celebration designs, established for 2023. Visitors also had the option to network with friends of RIDGID® Experience, a comparable contest hosted by experienced equipment brand name RIDGID. The two concurrent gatherings established a complete-scale celebration of the electrical, mechanical and plumbing trades.
“The excitement all over RIDGID Expertise, the two by trade experts and the RIDGID team, has grown every year. Just after every single contest our crew is generally amazed by the satisfaction and motivation each guest has for their profession,” stated Becky Brotherton, director of engagement marketing and advertising, RIDGID for Emerson. “It’s a privilege to be capable to thank every single of them for their perseverance and difficult work with this VIP practical experience.”
This year’s guests had been similarly enthusiastic about the excursion, with a single guest calling it the “bucket list” vacation of a life time.
“My most loved portion was conference the men and women behind the model since that’s what would make the manufacturer,” stated Armando Ramos, a provider plumber in Phoenix, Arizona. “Now that I imagine of RIDGID I consider of family members. Many thanks for the possibility!”
“I can not say ample about how wonderful the earlier couple of days have been. I’m so grateful to have had the prospect to go to the RIDGID Knowledge 2022 and satisfy so lots of wonderful people, test out the headquarters and go on some fairly brilliant outings. I’m about the moon and still just just can’t think that I bought to do this,” said Mary-Anne Bowcott, owner of Westcom Plumbing and Gas in Sooke, British Columbia.
Particulars on the 2023 RIDGID Knowledge Contest will be declared early upcoming yr.
Emerson’s professional instruments small business, which includes RIDGID as properly as the Greenlee® and Klauke® brands, gives the industry’s broadest portfolio of advanced, trustworthy equipment and systems for the mechanical, electrical and plumbing trades globally. Pay a visit to emerson.com/professionaltools for extra information.
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (Usa), is a world-wide technologies and software program firm delivering impressive solutions for shoppers in industrial, commercial and household marketplaces. A leader in industrial automation, Emerson can help process, hybrid and discrete manufacturers enhance operations, protect personnel, decrease emissions and obtain their sustainability ambitions via its Automation Alternatives and AspenTech companies. Emerson’s Industrial & Residential Answers business enterprise will help assure human ease and comfort and overall health, guard foods quality and security, advance strength performance and make sustainable infrastructure. For far more information, stop by Emerson.com.
Emerson introduced the TopWorx™ DX PST with HART® 7. Units present valuable valve knowledge and diagnostic facts, enabling the digital transformation of course of action apps. The new DX PST integrates seamlessly with existing valves and command programs, offering operators access to essential valve facts, trends, and diagnostics that can be used to forecast and routine upkeep.
The DX PST’s partial stroke test ensures the system’s dependable function without the need of shutting down the system. A basic safety function that confirms the valve will entirely close and prevent the process if an unexpected emergency is detected, and the exam is activated by merely urgent the local PST button — no added devices is needed. To stop important failure in upset conditions, the device will override screening to accomplish an emergency shutdown (ESD).
Certified for operation in severe and hazardous purposes, the adaptive DX PST is made to ensure the integrity of valves, strengthening over-all basic safety and facility uptime in oil and gas, refinery, chemical, industrial electricity and mining applications.
“The electronic transformation of the method marketplace proceeds to make operations safer and a lot more productive,” reported Prayag Vatsraj, World Item Manager of Emerson’s Switchbox. “The DX PST with HART 7 supports digital transformation by furnishing reliable knowledge that provides useful perception into the situation of valve assemblies that assures the integrity of the method without shutting down the approach.”
The HART® protocol, the specifications of which are owned by the FieldComm Group, builds a further layer of information and facts that assures knowledge, traits and diagnostics are monitored and tied into the Industrial Web of Issues. This information and facts can be utilized to effectively predict and agenda maintenance.
Capable of Basic safety Integrity Level 3 (SIL 3), the DX PST is accessible with an built-in 2oo2 or 2oo3 solenoid valve redundancy when paired with ASCO™ Collection Advanced Redundant Control Technique (ARCS) to even further increase safety and open terminals that permit an more stress transmitter along with two force switches. The discrete valve controller provides easy regional and remote calibration.
Additional means: • Join the Emerson Exchange 365 Neighborhood • Hook up with Emerson via Twitter Facebook LinkedIn YouTube • Understand much more about the TopWorx™ DX PST with HART® 7
Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (United states), is a world wide technology and engineering organization supplying modern solutions for prospects in industrial, professional, and residential markets. Our Automation Methods business assists system, hybrid, and discrete producers improve generation, guard personnel and the environment though optimizing their vitality and running costs. Our Business and Residential Alternatives small business assists be certain human consolation and wellbeing, shield meals high-quality and basic safety, advance electrical power efficiency, and generate sustainable infrastructure. For far more info check out Emerson.com.