We are pleased to announce this year’s selection of case studies to be presented during the Technology Case Studies Session at ATMOsphere America – The Business Case for Natural Refrigerants.
The following technology case studies have been chosen to be presented at ATMOsphere America 2013, which will take place from 18-19 June at the Liaison Capitol Hill Hotel in Washington DC.IGA Cap-de-la-Madeleine by Marc-André Lesmerises, Carnot Refrigeration
To reduce its energy consumption and green house gas emissions, Sobeys Quebec chose to replace its existing HFC refrigeration system at its IGA Extra Supermarket in Cap-de-la-Madeleine with a CO2 refrigeration system from Carnot. This new system uses captured CO2 gas for water heating purposes without the need for a heat exchanger or pumping system. This case study will highlight how the new CO2 system helped the store achieve a 22% reduction in refrigeration energy consumption.
Ammonia/CO2 System Offers Mainstream Solution by Danfoss
Together, Danfoss and Cimco Refrigeration present a unique ammonia/CO2 refrigeration solution recently deployed by Canadawide for an expansion at its 60,000 ft2 distribution center/warehouse operation in Montreal, Canada. The study addresses how the unique solution contributed to energy, installation cost, and maintenance savings for Canadawide. The presentation also show how this solution is scalable for mainstream deployment.
Sustainable CO2 technology and the role of control systems by Michael Engelbright, CAREL
Entire system controls play a key role in making installation and maintenance less complex. An intuitive controls management allows for the management of the varying load profiles efficiently and effectively without compromising the lifetime cycle of capital investment and high maintenance costs. This case study focuses on two current projects in North America: Supervalu Carpentaria’s change from centralised to decentralized (European) controls management and Roche Pharmaceuticals’ utilization of compact CO2 condensing units with integrated CO2 controls and high pressure valves.
Low energy consumption when using R290 as alternative to R404a in a light commercial refrigeration freezer by Vicente Guilabert Hernandez, HUAYI Compressor Barcelona, S.L.
Focusing on commercial refrigeration applications, the case study highlights the complete system energy savings achieved when using R290 as an alternative to R404a, combined with the use of high efficiency mechanical kits and electrical motors, in a light commercial freezer.
The refrigeration condenser: how the different types affect energy consumption and system performance by Preston Blay and Ilana Cember, Baltimore Aircoil Company.
This study presents a comparison of air cooled, evaporative and hybrid condensers. Using examples from both commercial supermarket and/or light industrial ammonia refrigeration systems, total cost of ownership analyses from theoretical models and real life examples are discussed, comparing first cost and operating cost, which includes peak demand kW, total kWh energy use, and water use. Additional condenser options are discussed as well as carbon footprint savings from reduced refrigerant charge and electricity savings.
Low Charge Ammonia Condensing Units for The US Market by Derek Hamilton, Star Refrigeration
This case study focuses on a freezer installation in which a low charge ammonia package has offered lower installation costs, better efficiency, and lower operational costs than alternative HFC solutions. The presentation will who that the latest aluminum heat exchanger technology, developed and built in the U.S., coupled with the proven low pressure receiver system, can result in high efficiency ammonia systems with a minimal ammonia inventory.
Carbon Dioxide Heat Pump Field Study by Merle Rocke, EcoThermics Corporation
The study presents a pioneering project between EcoThermics and Country Maid, utilizing transcritical carbon dioxide (CO2) dedicated heat recovery. The project involved the study of a prototype CO2 hydronic heat pump supplying simultaneous high temperature hot water and cold water for space air conditioning in a commercial/industrial food production facility under actual operating field conditions. This case study attempts to extrapolate comparisons to traditional methods and outline the lucrative market possibilities of CO2 heat pump technologies.
CO2 trans-critical compressors for safer, cheaper and more efficient use by Giacomo Pisano, Dorin S.p.A.
The case study will present a two stage internally compounded trans-critical CO2 compressor range which results in both cost and energy efficiency, while also ensuring safer equipment. The presentation will also discuss UL approval procedure for high-pressure equipment and highlight examples of end users using the product in different applications.
Innovative hydrocarbon solutions – applied on a bottle cooler by Alex Alvey, Tecumseh Products Company
Focusing on small bottle coolers, single-door merchandisers and small beer (keg) cooler appliances, the case study will present energy efficiency gains and improvements in pull-down time, achieved when replacing HFC refrigerant with HC refrigerant for several real life examples in the US.
How to manage 150 gramms propane limit with big plug in appliances in US Market by Doug Smith & Zgliczynski Marek, Embraco North America
In 2011, the EPA SNAP positive conclusion opened up an opportunity in the U.S. household and light commercial refrigeration applications for the use of hydrocarbons. However, the approved charge limit of 150g of propane creates a challenge for larger sized light commercial appliances. This case study presents different options for addressing this issue, including a comparative analysis.
Designing low charge R290 room air conditioners with smaller diameter copper tubes: examples from the US and China by John Hipchen, Exel Consulting
The case study demonstrates that when using smaller diameter, inner-grooved copper tubes in an R290 air conditioner, the refrigerant charge can be greatly decreased. Based on the 15 million units that have already been sold in China, the presentation will show examples of how this is, and can be, implement in North America. In addition, the presenters will give some insights on the development work that is being done in China with R290.
About ATMOsphere America 2013
For more information about ATMOsphere America, please visit: www.ATMO.org/america2013
Register for ATMOsphere America 2013
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