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Posts tagged ‘Andre Patenaude’

Simplify Refrigeration Merchandising Strategies

Andre Patenaude | Director – Solutions Strategy

Emerson’s Commercial and Residential Solution’s Business

Dynamic food retail market trends continue to reshape the physical layouts of grocery stores. In the never-ending quest to keep consumers engaged, retailers are rotating display cases, placing featured items in high-visibility areas, and/or redirecting shopping flows. At the same time, shrinking store footprints are forcing operators to explore distributed refrigeration architectures. In a recent E360 article, we explored how flexible refrigeration strategies are helping retailers adapt to modern food retail merchandising challenges.

In traditional store layouts, products have historically been categorized into relatively fixed aisles and locations.  But as retailers try to tailor store environments to consumers’ shopping preferences, these fixed aisles are being more frequently supplemented by a steady rotation of seasonal produce and specialty items.

As the trend toward urbanization drives more retailers to open smaller stores in existing metropolitan facilities, operators simply don’t have the space to support centralized direct expansion (DX) refrigeration. And while larger stores still rely on these DX refrigeration systems, many are starting the process of decommissioning portions of their systems for a variety of reasons:

  • Ensure reliable refrigeration performance
  • Comply with environmental regulations
  • Hit corporate sustainability targets

These dynamic factors are combining to significantly impact refrigeration equipment architectures.

Shifting to distributed strategies

Enabling merchandising and architectural flexibility requires making the shift from centralized DX systems toward one of many available distributed architectures. Distributed simply refers to the practice of distributing refrigeration condensing units (CUs) throughout a store to support various case loads. This can be achieved by integrating the CU into the refrigeration case itself, or by placing it within close range of cases.

Let’s look at a few of the leading distributed refrigeration options in the food retail space.

Micro-distributed (self-contained) — For retailers seeking maximum merchandising flexibility, plug-and-play, self-contained cases can be repositioned throughout a retail store. To meet applicable safety standards, units are currently factory-charged with up to 150g of R-290. However, a recent update to the UL 60335-2-89 safety standard has set the stage for R-290 charge increases depending on whether the unit has an open- or closed-door design:

  • 500g for open appliances without doors or drawers
  • 300g for closed appliances with doors or drawers

Although additional regulatory approvals and appropriate safety considerations will be needed to implement these higher charges, the potential for larger capacity self-contained R-290 units is now on the horizon. Multiple units can be placed on a shared water loop to remove condenser heat from a store. However, this scalable approach may limit mobility due to piping and installation requirements.

Outdoor condensing units (OCUs) — Recent advancements in modern technology have expanded OCU flexibility. Rather than using a fixed-capacity compressor — which provides a one-to-one relationship between a CU and a refrigeration fixture — digital compressors can now enable variable-capacity modulation and the ability for one OCU to support multiple fixtures.

The Copeland™ digital outdoor refrigeration unit, X-Line Series, continually modulates its capacity to precisely match the refrigeration loads of multiple fixtures. Instead of one fixed CU running at 100 percent capacity, regardless of demand, the digital X-Line delivers scalability from one to multiple units with just one OCU. Variable-capacity modulation advantages include:

  • More precise temperatures
  • Effective load matching
  • Improved energy efficiencies

Distributed scroll booster — Well-suited for new stores, retrofits and replacements, the Copeland scroll booster offers a unique balance of simplicity, sustainability and flexibility. By utilizing a low-pressure, zero glide A1 refrigerant (R-513A) for both low-temperature (LT) and medium-temperature (MT) circuits, this system is designed to:

  • Offer a familiar servicing profile
  • Scale from one to multiple refrigerated display cases or freezers
  • Eliminate the high discharge temperatures and compression ratios typically found in LT systems

The Copeland scroll booster enables the use of systems with smaller refrigerant charges and lower-GWP refrigerants (R-513A = 573 GWP), while delivering improved energy efficiencies and high reliability.

The Copeland indoor modular solution — This plug-and-play refrigeration package is designed to support larger self-contained cases by integrating all key system components within the unit itself:

  • Low-profile, Copeland horizontal variable speed scroll compressor maximizes case merchandising space and delivers superior energy efficiencies.
  • Integrated refrigeration circuit simplifies system design and architecture.
  • Electronic controls provide seamless supervisory control platform integration.

In addition, the Copeland indoor modular solution can enable a distributed refrigeration system to scale from one to multiple units — with multiple cases connected to a shared water loop.

Please visit our website to learn more about Emerson’s solutions for flexible and sustainable distributed refrigeration solutions, please visit our website.

Discover the Case for Natural Refrigerants at ATMOsphere America

Andre Patenaude | Director – Solutions Strategy

Emerson’s Commercial and Residential Solution’s Business

For decades, natural refrigerants have been used worldwide as environmentally friendly alternatives to high global warming potential (GWP) refrigerants or ozone-depleting substances (ODS). As the U.S. commercial refrigeration industry faces an imminent phasedown of hydrofluorocarbon (HFC) refrigerants, the stage is set for natural refrigerants like CO2 and R-290 to play much larger roles. Emerson is pleased to announce our participation in the ATMOsphere America Summit 2022 on June 7–8, where our experts will present new data that supports the expanding business case for natural refrigerants.

With the phasedown of high-GWP HFC refrigerants underway, commercial and industrial refrigeration stakeholders are actively planning for the next generation of refrigerant technologies. As corporate-led environmental initiatives are pledging to use more sustainable equipment, CO2 and R-290 are widely considered to be among the leading natural refrigerant candidates to anchor future refrigeration strategies.

Today’s market is evolving rapidly — and Emerson is at the leading edge of technological advancements supporting the use of these proven natural alternatives. We’ve made significant investments in research and development (R&D) projects and lab testing capabilities designed to:

  • Promote the use of low-GWP refrigerant technologies
  • Support original equipment manufacturers (OEMs) in their design cycles
  • Help end-users to make successful refrigerant transitions

Join us at the ATMOsphere America Summit 2022

As a gold sponsor of the upcoming ATMOsphere America Summit 2022, Emerson is looking forward to presenting data from our recent R&D efforts which explore the expanding role of natural refrigerants. This in-person-only event will take place on June 7–8 in Washington, D.C., at the Hilton Alexandria Mark Center. Join peers, industry experts, policymakers, end-users, and contractors to explore the latest natural refrigerant trends and technologies.

Emerson’s participation will feature informative sessions and panel discussions highlighting our latest natural refrigerant research:

  • Making the case for sustainable CO2 in supermarket refrigeration (June 7 at 2 p.m. EDT) — which will be presented by me and Zero Zone
  • Exploring the climate zone impacts on CO2 system selection (June 8 at 10 a.m. EDT) — which will be presented by me
  • Panel discussion sharing the latest policy and market trends impacting natural refrigerants (June 7 at 11 a.m. EDT) — which will be presented by me

If your company is interested in exploring a future based on natural refrigerants, register now and make plans to attend this in-person event. Be sure to stop by any of the Emerson sessions and ask how we can help you on your journey to more sustainable refrigeration.

 

 

 

Warm-weather CO2 Strategy Helps Retailer to Hit Sustainability Target

Andre Patenaude | Director – Solutions Strategy

Emerson’s Commercial and Residential Solution’s Business

The transition from hydrofluorocarbon (HFC) refrigerants to lower-global warming potential (GWP) alternatives has become a common denominator in many food retailers’ sustainability strategies. Whether your company is in the early phases of its sustainability journey or has already made significant progress in the race to Net Zero, you’ve likely evaluated the potential of CO2-based refrigeration. Among the many misperceptions about CO2 transcritical booster systems is that they are not well-suited for installations in warmer climates. Emerson recently partnered with Zero Zone to help a leading food retailer prove the business case for warm-weather CO2 refrigeration. To view the full article, click here.

Expanding application potential

When calculating the sustainability potential of a refrigeration system, it’s important to look at its total equivalent warming impact (TEWI), including direct carbon emissions from refrigerant leaks and indirect emissions from energy consumption. Although the natural refrigerant CO2 (or R-744) has a GWP of 1, many supermarket owners and operators have questions about the efficiency of CO2 transcritical booster systems, especially in warmer climates.

CO2 transcritical booster refrigeration systems have been installed in Europe for decades and are expanding rapidly around the globe. Today, nearly 1,000 CO2 transcritical booster systems are installed in the U.S., with adoption projected to increase more than 50% by 2025. System designers, original equipment manufacturers (OEMs) and component manufacturers (e.g., Emerson) have made tremendous strides in developing smart CO2 transcritical booster system strategies that:

  • Improve energy efficiencies in warmer climates
  • Optimize system performance and reliability
  • Lower the total cost of ownership (TCO)
  • Simplify system start-up, operation, high-pressure management and maintenance

Retailers who are now looking at CO2 for the first time will benefit from years of installations and supermarket trials that have significantly improved upon CO2 transcritical booster equipment technologies.

Proving the business case

In a recent collaboration, Emerson partnered with refrigeration OEM Zero Zone to help them design and install a CO2 transcritical booster system for a new supermarket in Joplin, Mo. Due to the location’s warm climate, the design team recommended an emerging high-ambient mitigation strategy designed to maximize the efficiency of CO2 during the summer season. The goals of the project were to help the retailer to meet their sustainability targets while maintaining the highest standards for food quality and safety.

The climate in Joplin averages more than 200 annual hours above R-744’s critical point of 87.8 °F. During these warmer temperatures, a CO2 transcritical booster system would typically enter transcritical mode and consume electricity at a higher rate, but the Emerson and Zero Zone system has been designed to operate efficiently across even these high-temperature ranges. With recent advances in system technologies, stakeholders can choose from multiple CO2 strategies designed to mitigate high-ambient temperatures, minimize transcritical operation, and maximize energy efficiencies.

For the Joplin installation, Zero Zone and Emerson opted to utilize an adiabatic gas cooling strategy on the system’s outdoor condenser/gas cooler. When summer heat builds and R-744 pressures begin to rise within the gas cooler, water is misted onto adiabatic cooling pads — effectively keeping R-744 below its critical point during warm stretches and dramatically improving system efficiency. Today, this installation is operating as designed for Zero Zone’s food retail customer, delivering year-round efficiencies and refrigeration reliability.

The system features a full suite of integrated Emerson CO2 technologies — from low- (LT) and medium temperature (MT) compressors to CO2 refrigeration rack controls case controls and high-pressure controls — that are helping Zero Zone to prove the business case for warm-climate CO2 systems. Not only have these technological advances greatly expanded the potential of CO2 applications in diverse climates, but they’re accelerating CO2 adoption for a new generation of end-users and service technicians.

For more information about the high-ambient CO2 mitigation strategy used in this installation, you can read our case study. To learn about Emerson’s commitment to developing integrated CO2 technologies, please visit our CO2 information hub.

Simplifying CO2 Refrigeration

Andre Patenaude | Director – Solutions Strategy

Emerson’s Commercial and Residential Solution’s Business

Interest in CO2 transcritical booster systems is growing rapidly within the U.S. commercial refrigeration industry. In recent years, many supermarkets have tested the waters with CO2 system trials in select stores. Others have already made CO2 the foundation of their long-term refrigeration strategy. But with sustainability goals becoming higher priorities, we expect up to 800 new CO2 transcritical booster systems to be installed in the next 3–4 years.

Although CO2 (refrigerant name R-744) offers a variety of sustainability and reliability benefits, a lack of familiarity with the nuances of CO2 technology can make it seem complex to end-users and service technicians alike. I recently spoke with R744.com about how Emerson is helping to alleviate these concerns by simplifying the applications of CO2 refrigeration systems.

Smart controls to make it easier

To help facilitate these increased adoption levels, Emerson recently launched the Lumity™ E3 supervisory control, designed specifically for CO2 applications. As the successor to our venerable E2 controller system — which is already used in CO2 transcritical booster systems globally — this next-generation refrigeration and facility control device offers native CO2 functionality to better manage a wide spectrum of CO2-specific capabilities:

  • High-pressure system and valve control
  • System start-up and shut-down protocols
  • Hot-gas and liquid injection modulation (de-superheating)
  • Adiabatic gas cooling control
  • Parallel compression management

R-744 refrigerant and CO2 refrigeration system properties are unique and need their own specific control logic and programming requirements. Within the Lumity E3 controller for CO2, we’ve integrated machine-learning algorithms and other native programming that will make CO2 systems easier to own, operate and troubleshoot — while still providing the customization options end-users need to tailor controls to their store requirements. The E3 controller platform is also web-enabled to support remote monitoring and servicing via smartphone, tablet or other web-enabled browsers.

We are also launching a new Lumity CC200 case controller, which includes a specific model for CO2 system cases. This device integrates seamlessly with the E3 supervisory control platform to provide key case-level functions, such as:

  • Demand defrost control
  • Management of up to three evaporator coils with three stepper motor or pulse width modulated (PWM) electronic expansion valves (EEVs)
  • Integrated evaporator pressure regulating (EPR) valve

The CO2 versions of these control products are currently being field-tested and will be available globally later this year. Upcoming E3-CO2 functions include mechanical subcooling and ejector control. Also, hot-gas defrost will be added to the E3-CO2 platform to support the North American trend of using hot-gas defrost — rather than traditional electric defrost — in industrial and commercial CO2 transcritical booster applications.

The upcoming E3-CO2 model is designed to enable current E2 end-users to easily replace their control device when it becomes available. End-users of the standard E3 controller will have the option to upgrade it to the CO2 version.

Expanded CO2 compression capacities

To further support increased CO2 adoption in supermarkets, Emerson will be expanding the capacity of our current Copeland™ 4MTLS transcritical CO2 semi-hermetic compressor lineup. Within months, we will be launching a new option that delivers our largest displacement in the 4MTLS product line — with 330,000 BTU at 20 °F.

In addition to our transcritical CO2 semi-hermetic lineup, we offer Copeland ZOD subcritical CO2 digital scroll compressor products designed to exploit the characteristics of CO2 refrigeration in low-temperature (LT) applications. And, since all lead and parallel compressors in CO2 transcritical booster systems require a variable frequency drive (VFD), we also leverage the new Copeland EVM/EVH Series VFDs in these CO2 system applications.

In Europe, Emerson recently launched Copeland transcritical CO2 scroll compressors for the food retail market. We expect these to be available for use in U.S. markets within the next 18 months. Later this year, we will be launching a new CO2 test lab that will enable us to fully examine the use of these scroll compressors in CO2 transcritical scenarios.

To learn more about how we’re helping to simplify the use of CO2 refrigeration, please visit our CO2 resources webpage.

 

 

Emerson Highlights Commitment to CO2 at ATMO World Summit 2022

Andre Patenaude | Director – Solutions Strategy

Emerson’s Commercial and Residential Solution’s Business

Emerson recently participated in the ATMO World Summit 2022, a 24-hour event focused on exploring developments in the uses and applications of natural refrigerants. Emily Vilardi, Emerson product marketing manager and I presented a webinar highlighting Emerson’s commitment to CO2 refrigeration via the launch of new products and our expanded research and development (R & R&D) efforts. For those unable to attend the event or our session, ATMO has made it available for free on-demand.

Corporate sustainability objectives and environmental regulations are driving the adoption of refrigerants with lower global warming potential (GWP). As food retailers evaluate emerging solutions and transition to the next generation of refrigeration technologies, CO2 transcritical booster systems offer a proven, natural alternative. Although this innovative system architecture uses CO2 (refrigerant name R-744) for both medium- (MT) and low-temperature (LT) refrigeration loads, it introduces a whole new approach to refrigeration for many end-users and technicians.

Emily and I discussed how Emerson is committed to helping facilitate this transition by simplifying the application of CO2 refrigeration through the seamless integration of system components. We focused on three primary areas: compression and variable frequency drives (VFDs), controls and software, and R&D lab investments.

CO2 compression and VFD technology

For the MT transcritical portion of a CO2 transcritical booster system, Emerson offers the Copeland™ 4MTLS transcritical CO2 semi-hermetic compressor in nine displacements from 40,000 to 300,000 BTUs at 60 Hz. These four-cylinder compressors feature onboard diagnostics and have a capacity range from 17.5 to 354 MBH at 20 °F evaporating, 95 °F gas cooler outlet at 60 Hz. In addition, they can be paired with Copeland VFDs, EVM/EVH Series to enable variable-capacity modulation. EVM/EVH drives offer the security of providing 200 percent maximum overload protection for two seconds.

On the LT side, Emerson offers the Copeland ZO(D) subcritical CO2 scroll compressors: ZO for fixed capacity and ZOD (digital) for variable-capacity modulation or their ability to unload capacity down to 10 percent. For example, the ZOD34 is rated for a 34,000 BTU displacement that can modulate (or unload) its capacity to 3,000 BTUs. These subcritical digital scrolls offer a smaller, lighter-weight footprint and don’t require VFDs for capacity modulation. In addition, Copeland MSLS subcritical semi-hermetic compressors are available in displacements from 60,000 to 180,000 BTUs, have a range of 25 to 70 Hz, and are rated for very high standstill pressures.

Integrated CO2 controls

CO2 transcritical booster systems rely heavily on electronic controls to optimize system installation, integrate with cases and high-pressure valves (HPVs), and manage system pressures. Emily explained Emerson’s integrated approach to CO2 controls that enables seamless communication and enhanced visibility to all aspects of system operation.

The soon-to-be-released Lumity™ supervisory control for CO2 applications will expand upon the legacy E2e control to offer enhanced CO2 capabilities, reduce programming complexities, and simplify system management via:

  • Centralized CO2 suction group control for transcritical booster and parallel compression
  • Advanced compressor superheat management for liquid or hot gas injection
  • Precise load management and automatic recovery from out-of-range conditions
  • Enhanced CO2 system monitoring for system insights
  • Oil management for long compressor life

The Lumity E3-CO2 will also leverage the many benefits of the new E3 platform, including a built-in touchscreen, remote mobile access, and a greatly improved user interface (UI) that brings all critical CO2 system monitoring into one unified view. The control will integrate seamlessly with Emerson’s high-pressure controller and valve driver (XEV20), the soon-to-be-released Lumity CC200 case controller, the XM600 series case controllers, and leak detection devices (RLDS and MRLDS).

Investing in the future of CO2

In the ATMO webinar, I also elaborated on how Emerson is helping our customers to prepare for the future of CO2 refrigeration through continued lab investments and R&D efforts. In addition to the CO2 transcritical booster system that has been installed at The Helix Innovation Center since 2016, we’ve recently dedicated more than 100,000 square feet to a CO2-specific supermarket test lab in our facility in Sidney, Ohio. This new lab will be launched this summer and feature:

  • 18 display cases from five different manufacturers
  • Walk-in cooler and walk-in freezer
  • Dry gas and adiabatic gas coolers on the roof
  • Wide range of high-ambient system strategies
  • Ability to create a 100 percent false load to enable testing at any capacity

These advanced testing capabilities will give Emerson’s application engineers ample opportunities to measure and validate system performance across a full spectrum of application scenarios.

To learn more about how Emerson is helping our customers and the industry to simplify the adoption of CO2 system technologies and optimize refrigeration system performance, please view the ATMO webinar.

 

 

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