Skip to content

Posts tagged ‘sustainability’

Grow Your Bottom Line With Sustainable Refrigeration Retrofits

Katrina Krites | Marketing and Business Development

Manager, Food Retail

Emerson’s Commercial and Residential Solutions Business

Across the food retail market, supermarket operators are re-evaluating their legacy refrigeration architectures. A dynamic mix of regulatory mandates, sustainability goals and the emergence of e-commerce fulfillment models are dictating changes in the status quo of refrigeration. We recently published an article in the RSES Journal that discussed refrigeration retrofit strategies that allow retailers to meet their sustainability objectives while improving their bottom lines.

When considering refrigeration retrofits, food retailers must remember that sustainability is a two-sided coin. While reducing leaks of global warming potential (GWP) refrigerants is important for lowering direct emissions of greenhouse gases (GHGs), many supermarket operators often overlook the potential for indirect GHG emissions caused by poor system energy efficiencies.

The Environmental Protection Agency (EPA) estimates that supermarkets are the most electricity-intensive of all commercial buildings. Commercial refrigeration systems account for 40–60% of supermarket energy consumption and are by far the greatest contributor to indirect GHG emissions. Combined, direct and indirect emissions make up the true measure of sustainability, or a system’s total equivalent warming impact (TEWI).

Reduce direct emissions with lower-GWP refrigerants

The transition from high-GWP refrigerants and those with ozone depletion potential (ODP) is inevitable. Common legacy refrigerant options such as the HFC R-404A will be phased down while hydrochlorofluorocarbons (HCFCs) such as R-22 are being phased out. But this does not necessarily mean operators should immediately transition to an alternative refrigerant or embark on a complete refrigeration rebuild.

Lower-GWP A1 refrigerants, such as the hydrofluoroolefin (HFO) blend R-448A/R-449A, are available that allow end-users to retrofit their existing system, reduce GWP from direct emissions by up to 60%, and still maintain a familiar operational footprint similar to the one they have today.

For those operators currently using R-22, the transition to R-448A/R-449A is relatively straightforward and requires very few substantive architecture changes. The transition from R-404A to R-448A/R-449A is slightly more involved but can still be accomplished without significant architectural changes. R-448A/R-449A produces compressor discharge temperatures that run approximately 10–12% higher than R-404A. This may require additional compressor cooling mitigation such as head cooling fans, demand cooling modules, or a liquid or vapor injected scroll compressor. Consult your compressor OEM’s guidelines for specific retrofit procedures.

Improve system energy efficiencies

Any system retrofit or upgrade comes at a cost, so food retailers must ensure their investment delivers long-term viability and returns to their bottom line. This is where reducing indirect emissions by improving energy efficiencies plays such an important role. The U.S. Department of Energy (DOE) estimates that every dollar saved in electricity is equivalent to increasing sales by $59.

While it makes sense to undertake energy-efficiency measures in conjunction with a refrigerant transition, energy optimization best practices can — and should — be performed periodically on all systems. Before considering any retrofit options, start by performing a system assessment to determine your current performance metrics — which in many cases will deviate significantly from the system’s original commissioned baseline.

The next logical step in the energy optimization process is to enable a variable-capacity modulation strategy by either upgrading to a digitally modulated compressor or adding a variable-frequency drive (VFD) to a fixed-capacity compressor. Variable-capacity modulation provides significant system improvements, not just to energy efficiency but also to overall refrigeration system performance, reliability and lifespan. Benefits include:

  • Precise matching of capacity to changing refrigeration loads
  • Tight control over suction manifold pressures, allowing increased setpoint and energy savings
  • Improved case temperature precision
  • Reduced compressor cycling (on/off)

In digital compressor retrofit scenarios, we’ve demonstrated that replacing an underperforming, fixed-capacity compressor with a variable-capacity compressor can result in an additional 4% energy savings — even before activating digital modulation capabilities. And once digital modulation is activated, operators can expect an additional 12% energy savings.

Whether you’re trying to reduce your direct emissions with lower-GWP refrigerants or seeking to improve energy efficiencies and lower your indirect emissions, Emerson has compression technologies and sustainable refrigeration solutions to help you meet your specific objectives. The Copeland™ digital semi-hermetic and Copeland™ digital scroll compressors provide opportunities to transition to lower-GWP refrigerants and enable variable-capacity modulation to drive energy efficiencies.

Refrigerant Transition Continues Along State and Federal Lines

Jennifer Butsch | Regulatory Affairs Manager

Emerson’s Commercial & Residential Solutions Business

Emerson recently participated in the Atmosphere America online conference, where commercial refrigeration industry stakeholders discussed the ongoing transition from hydrofluorocarbon (HFC) refrigerants to those with lower global warming potential (GWP). Dr. Rajan Rajendran, Emerson’s vice president of system innovation center and sustainability, and I were speakers at the event; ACHR The News reported on our thoughts on the topic in a recent article.

Recapping recent events that impacted refrigerant rulemaking

To recap the activities regarding U.S. federal refrigerant regulations, I explained how these policies have faced many legal headwinds over the past few years. These began in 2017, when in response to a court challenge, a federal court vacated the Environmental Protection Agency’s (EPA) Significant New Alternatives Policy (SNAP) Rule 20 on the basis that the EPA didn’t have authority to regulate non-ozone depleting substances. If you remember, SNAP Rules 20 and 21 had been adopted on the basis of reducing global warming by phasing down the use of higher-GWP HFCs in some commercial and air conditioning equipment.

In response to the court’s ruling, the EPA released a guidance document stating that they would no longer be enforcing the delisting of HFCs under SNAP Rules 20 or 21. As a result, the scope of the SNAP program — including its ability to regulate HFCs and implement Rules 20 and 21 — remains to be seen. As of this time, the industry is still waiting for clarification from the EPA on this matter.

Reviewing new regulatory activity

However, as I explained at the conference, the EPA did introduce a SNAP Rule 23 proposal earlier this year, which recommended the use of three additional lower-GWP refrigerant alternatives for commercial refrigeration — R-448A, R-449A and R-449B — subject to narrow use limits. While the industry is currently awaiting the EPA’s final rule on SNAP Rule 23, this new activity demonstrates that the EPA is continuing to evaluate new refrigerants and list additional substitutes — which is a positive step in the right direction for our industry.

But in the absence of federal regulations governing HFCs, many states have taken measures into their own hands. The U.S. Climate Alliance now consists of 25 member states that are taking the lead on climate policy and in general, refrigerant regulations. So far, the majority of those efforts have been through the adoption of SNAP Rules 20 and 21, which California was the first to adopt into state law via its California Air Resources Board (CARB) initiatives. And as we’ve discussed previously in this blog, additional CARB proposals are currently under review and being formulated with guidance and input from industry stakeholders.

Rajan also spoke about a pair of new bipartisan bills that have been introduced in the House and the Senate which would phase down the production and consumption of HFCs over a 15-year period in accordance with guidance from the Kigali Amendment to the Montreal Protocol. The passing of these companion bills — known as the Senate American Innovation and Manufacturing (AIM) Act of 2019 and the House American Innovation and Manufacturing Leadership (AIML) Act of 2020 — would authorize the EPA to regulate HFCs and establish standards for HFC management (service, repair, recovery, recycle, reclaim, etc.).

Both the AIM and AIML Acts would not affect existing equipment but would provide allowances for the aftermarket servicing needs of our industry. Their goals would be to preserve previous technological investments while supporting innovation and potential job creation.

As Rajan stated, by adopting a federal approach proposed by these bills, our industry would benefit greatly from much-needed regulatory consistency and certainty. It’s important to note that Emerson and its industry partners, such as the American Heating and Refrigeration Institute (AHRI), have pledged their support for these new bills. In addition, since these bills do not preclude states’ rights, efforts that have taken place in California and other states are still valid. While these states might be slightly leading in the refrigerant transition, our hope would be that the rest of the country would soon catch up and follow a standardized approach.

How Restaurants and C-stores Can Deliver Safe, High-quality Food Offerings

MattToone_2 Matt Toone | Vice President, Sales & Solutions – Cold Chain

Emerson Commercial & Residential Solutions

Whether you’re a convenience store (c-store) operator, quick-service restaurant (QSR), or a fast casual or fine dining establishment, ensuring food quality and safety is imperative to your success. In this blog, the first of a three-part series based on a recent E360 article, Minimizing Food Safety Risks From Farm to Fork, I’ll explore the efforts involved in maintaining safety throughout the food supply chain.

How Restaurants and C-stores Can Deliver Safe, High-quality Food Offerings

Dining out has become an everyday part of American life. It’s estimated that more than one-third of us eat at a fast-food restaurant every day, and more than 60 percent have dinner at a restaurant at least once a week. As consumers are becoming increasingly discriminating about what they eat, restaurants are under more pressure to deliver fresh, healthy foods and in greater varieties. But, above all else, restaurant operators must ensure food is safe to eat.

Food’s journey to a customer’s plate (or a packaged take-out container) is fraught with hazards. Ensuring food safety is a cumulative effort shared by every stakeholder along the journey — from production and processing to transportation, cold storage and ultimately, the foodservice provider. Temperature deviations, unsafe handling practices and improper food preparation processes can all increase the potential for foodborne illness outbreaks.

Thankfully, improvements in refrigeration equipment and internet of things (IoT) technologies are helping to provide more reliable and consistent temperature and quality control within the cold chain. Throughout food’s journey, operators at each point are now able to monitor, control and track a variety of conditions necessary for preserving food quality, including: temperature, humidity, the presence of ripening agents, lighting and much more.

Meeting customer expectations

Modern restaurants and c-stores are being held to increasingly higher food safety and quality standards. Consumers and regulators alike are demanding greater transparency in the food supply chain, which includes improved traceability of food’s journey from farm to fork. To keep customers coming back, operators must not only consistently deliver safe, high-quality food but also openly disclose their suppliers.

Protecting against foodborne illness outbreaks helps to not only ensure your customers’ well-being, it also guards against potentially devastating impacts to your brand’s reputation and bottom-line profitability. As one of the final links in the food supply chain, restaurant operators must ensure that food is safe on receipt and adhere to safe food storage, handling and preparation processes in their kitchens.

This starts with understanding everything that contributes to food quality and safety throughout the cold chain. With today’s connected infrastructures and IoT-based monitoring and tracking capabilities, operators now have the potential for visibility into each step of the journey — even the possibility for comprehensive cold chain traceability. Then, once food has been received into inventory, this process continues by applying all the modern tools available to ensure food quality, safety and consistency.

Food supply chain safety is cumulative

It’s estimated that nearly half of the fresh fruit and one-third of the fresh vegetables consumed in the United States are sourced from foreign countries — transported by land, sea and air in a process that can span the point of harvest, processing, cold storage and distribution. Overseas shipments can last anywhere from two to four weeks; for domestic transportation, it can take three to four days to ship strawberries from California to the East Coast.

In total, these perishables can potentially undergo as many as 20 to 30 steps and multiple changes of ownership throughout the food supply chain process. The more these items change hands, or are staged, loaded and unloaded, the greater the chances for contamination and temperature excursions along the way.

In my next blog, I’ll take a closer look at the environmental factors and conditions putting food at risk as well as the food safety regulatory landscape.

 

Evaluating Sustainable Supermarket Refrigeration Technology

AndrePatenaude_Blog_Image Andre Patenaude | Director, Food Retail Marketing & Growth Strategy, Cold Chain

Emerson Commercial & Residential Solutions

Progressive Grocer recently interviewed me about Emerson’s and the commercial refrigeration industry’s efforts to help promote the emergence of more sustainable, refrigeration technologies. The complete article can be found here.

Evaluating Sustainable Supermarket Refrigeration Technologyd

It’s not news that supermarkets are under continuous regulatory pressure to not only lower the energy demand of their refrigeration systems, but also to make the transition to low global warming potential (GWP) and zero ozone depletion (ODP) systems. The permanent ban on R-22, long the industry standard, becomes official on January 1, 2020.

What is news is how intensely suppliers and retailers are focused on and sharing information on sustainability initiatives intended to sharply reduce the costs and impact of their refrigeration systems, both in anticipation of future regulations and to attain long-term economic and environmental sustainability.

As different manufacturers approach these issues with a variety of new technology options, the challenge becomes defining new standards for sustainable products and systems, so that the industry can converge on proven, synergistic solutions.

Taking a full system’s approach to sustainability

At Emerson, our approach to sustainability is based on a multi-faceted goal. First, sustain the environment through lower-GWP refrigerant and technology choices. Second, sustain companies financially from a total cost of ownership perspective. And third, focus on energy efficiency as a path to sustainability through forward-looking engineering and the implementation of new monitoring and control technologies, particularly Internet of Things (IoT) capabilities.

At Emerson, we take a full system approach to evaluate the sustainability of new and existing technologies in the context of multiple key selection criteria. This is part of Emerson’s “Six S’s” approach to refrigeration sustainability: simple, serviceable, secure, stable, smart and sustainable.

(To learn more about the rationale, methodology, application and impact of Emerson’s “Six S’s” philosophy, read the blog found here.)

Exploring the potential of natural refrigerants

One area of Emerson’s focus is our work to better understand and then implement emerging natural refrigerants, such as R-744 (carbon dioxide) and R-290 (propane) for different types of applications.

Recent innovations include the development of an integrated display-case architecture. This R-290 system is designed to use one or more compressors and supporting components within cases, removing exhaust heat through a shared water loop — incorporating our expertise in R-290 compressors and our experience with stand-alone condensing units. We’ve also developed a full range of CO2 system technologies, including valves and controls for both small and large applications. For cold storage applications, our modular refrigeration units utilize both CO2 and ammonia-based refrigerant configurations.

Early adopters pave the road to the future

Over the past decade, there have been many retailers committed to testing sustainable refrigeration technologies and low-GWP refrigerants in their stores. For example, the article quoted Wayne Posa of Ahold Delhaize USA, who discussed the company’s transition from R-22, stating: “Food Lion has been committed to zero-ODP and low-GWP refrigerants for several years.”

Different manufacturers are taking different approaches to studying and applying refrigerants and technologies to reach that goal, from the use of hydrofluoroolefin (HFO) refrigerants (such as R-448A and R-450) in distributed refrigeration systems to proven CO2-based system architectures.

In the area of refrigerants — let alone technologies in development for increased energy efficiency and remote monitoring and control — the refrigeration industry continues its search for a new standard. As Brian Beitler of Coolsys, a consulting and contract engineering firm explains, “Between transcritical, ejector systems, NH3 over CO2, cascade, propane, multidistributed and hybrid gas coolers, the jury is still out.”

As we move closer to the most sustainable standard for refrigerants, Emerson continues its work on total refrigeration system sustainability — in refrigerants, energy efficiency, and control — as guided by our “Six S’s” philosophy. This work is our road map to the future.

 

Top Five Reasons to Choose Copeland Scroll™

Phil Moeller | Vice President – Product Management, Refrigeration
Emerson Commercial & Residential Solutions

In an industry era defined by dynamic market forces and regulatory uncertainty, choosing a compression platform as the foundation for your refrigeration equipment is more critical than ever. As supermarket, restaurant and convenience store retailers face unprecedented changes in the way they conduct business, their refrigeration requirements are quickly evolving. Modern systems must meet a variety of emerging challenges, such as:

  • Supporting small- to large-store formats
  • Complying with food safety and environmental regulations
  • Adapting to e-commerce and omnichannel fulfillment requirements
  • Integrating with IoT technologies and building management systems
  • Achieving energy-efficiency and sustainability goals

Whether you’re an OEM updating your product lines, an end user evaluating compressors for new applications, or a technician performing system upgrades and retrofits, the Copeland Scroll compressor platform has the breadth of product lines to meet today’s demanding requirements.

Copeland Scroll has consistently pushed the envelope in refrigeration reliability for decades, and these innovations continue today. Here are the top five reasons leading equipment manufacturers, end users and contractors choose Copeland Scroll to support their refrigeration initiatives:

  1. Widest application and capacity range — When it comes to low- and medium-temperature applications in fractional to large-horsepower capacities from ¾ to 17 HP, only Copeland Scroll meets the full breadth of specifications for today’s diverse applications. In 2019, we’ll add three additional capacities to our popular KA lineup, which recently took home an Innovation Award at the 2018 AHR Expo.

 

  1. Technology leader — Since its introduction, Copeland Scroll has set the standard in compression technology. From digital modulation, liquid- and vapor-injection and low condensing operation to onboard electronic diagnostics and compatibility with low-GWP alternative and natural refrigerants, the Copeland Scroll platform continues to lead the industry in performance- enhancing innovations.

 

  1. Superior reliability and energy-efficiency At the end of the day, what matters most to our customers are reliable performance and energy-efficiency. With 70 percent fewer moving parts and a simple internal suction and discharge method, Copeland Scroll delivers reliable, energy- efficient performance, year after year. Its compact and lightweight design allows it to be integrated in applications where space is limited, without ever sacrificing performance or efficiency.

 

  1. Expert distribution network and support — As the standard in scroll compression technology, Copeland Scroll is backed by a wholesaler network comprised of 850 Copeland-authorized locations with more than 340 certified Copeland technical specialists on staff. And since Copeland Scroll is manufactured in the U.S., when you need customer service, product support or availability, representatives from our American base of operations can quickly deliver the compressor you need.

 

  1. Product development expertise — When you choose Copeland Scroll compressors, you’re also partnering with Emerson and gaining access to our extensive capabilities to support your product development efforts, including: application engineering; design, testing and certification services; innovation center proof-of-concepts; and app development.

 

From transport to cold storage, Copeland Scroll compressors are the first choice in every link of the food supply chain. So, don’t put your company’s reputation at risk. Choose the leader in scroll compression and commercial refrigeration technologies. Choose the proven dependability of Copeland Scroll.

 

%d bloggers like this: