Best of 2011: CO2 commercial refrigeration

By team, Dec 27, 2011, 08:50 5 minute reading

2011 saw an ever-growing market in CO2 supermarket systems in Europe in line with retailers’ sustainability commitments. The industry is preparing to step up CO2 deployment in North American and Japanese supermarkets, and also CO2 trials in new markets such as China. Manufacturers have been working on launching products for warm climates or for smaller store formats, while new projects are testing innovative designs that combine heating and cooling.

In this article, summarises some of the 2011 developments pertaining to CO2 commercial refrigeration and some of the articles that got many “clicks”.

New and/or growing markets

Hill PHOENIX acquires Advansor - CO2 transcritical refrigeration coming to the US next year
: In a game changing move Hill PHOENIX Inc. and Advansor join forces to become the world’s largest CO2 manufacturer. This acquisition will both cement Advansor’s position as a leading player in Europe and enable Hill PHOENIX to bring CO2 refrigeration transcritical technology to the North American market.

Next Generation Supermarket Refrigeration in the US - CO2: Sporlan Division Parker Hannifin Corporation, presents an overview of CO2 supermarket applications, which are rapidly gaining ground in the commercial refrigeration sector. There are over 75 CO2 installations in North America.

Japanese demo project will assess CO2 performance in different climatic zones: Aiming to measure energy consumption with CO2 in the different climatic zones of Japan, a total of 50 Lawson’s demonstration convenience stores located in each of the country\'s diverse climatic regions will be equipped with SANYO’s CO2 refrigeration and freezer units.

Tesco opens its first CO2 refrigeration store in China
: Early August 2011, retailer Tesco opened its 97th store in China, yet the first one to feature a CO2 refrigeration system.

Awareness raising and sustainability

“CO2 Myths and Facts” website by Danfoss: Danfoss has launched a new online information portal to clarify all the myths that exist around CO2 as refrigerant.

Exclusive interview with J. Mandyck, Carrier VP of Sustainability & Environmental Strategies: talked to John Mandyck, Carrier Vice President of Sustainability & Environmental Strategies, about the company’s approach and recent initiatives regarding sustainability, including the launch of CO2 technology for warmer climates and the Carrier University Institute for Sustainability.

Exclusive interview with J. Skelton, Sainsbury\'s Head of Refrigeration: John Skelton, Head of Refrigeration at Sainsbury\'s, talks to about the motivation driving the retailer’s natural refrigeration strategy, the approach taken and the lessons learned so far.

Market trends and publications

Market trends for natural refrigerants discussed at ATMOsphere Europe 2011: Three presentations provided at ATMOsphere Europe 2011 workshop on natural refrigerants focused on market trends for natural refrigerants in different applications such as supermarkets.

German UBA report showing the way to phase out f-gases: The German Federal Environment Agency (UBA) sees necessity for an international and legally binding regulation of f-gases. In a recently published report, the UBA outlines how to get there.

EIA: Notable progress in retail use of CO2: The Environmental Investigation Agency has released the latest in a series of reports assessing natural refrigerant use and HFC phase-out in UK supermarket refrigeration.

IEA Heat Pump Centre Newsletter - views on supermarket refrigeration: The Newsletter discusses the use of heat pumps for energy recovery in supermarkets, the expansion of an energy simulation software package to cover newer system configurations, as well as trends and perspectives in supermarket refrigeration.

Technology, design, products, research

Carrier - Efficient CO2 refrigeration systems for higher ambient temperatures: Carrier is working on overcoming concerns that CO2 systems only work efficiently up to 15°C ambient temperatures.

Booster systems for low evaporation temperatures by Bitzer
: When working with very low evaporation temperatures multi-stage compression can help to avoid high compression rates that can compromise compressor volumetric efficiency. Bitzer engineer Alessandro da Silva explains how such systems work.

New paper from Dorin: CO2 transcritical compressor design
: Authors Giacomo Pisano and Mauro Dallai demonstrate how different design concepts can have an impact on the compressor heat transfer and dissipation, leading to diverse performances.

Germany honours project dedicated at enhancing CO2 efficiency at high temperatures: kke’s collaborative project with the BITZER Chair of Refrigeration, Cryo and Compressor Technology of the Technische Universität Dresden, has developed an "expander compressor unit (ECU) for carbon dioxide refrigeration systems with hot gas defrosting".

Green & Cool presents new compact CO2 refrigeration units: Green & Cool has launched a new range of smaller CO2 refrigeration units to open up an entirely new market segment, targeting small supermarkets, petrol stations or offices.

EuroShop 2011: CO2 compressors and components: provides an overview of some of the CO2 compressors and components showcased at EuroShop 2011 trade fair. + PHOTOS

High efficiency CO2 refrigeration units for warm climates by enEX: enEX has added a new family to its range of air-cooled refrigeration systems that is specifically designed for warm environments.

AHR Expo 2011 - CO2 products on display and back stage: The AHR Expo had a full house in 2011 in Las Vegas, with the booths of the 1,900 exhibitors displaying products representing every facet of the industry including natural refrigerant solutions with CO2. reports. + PHOTOS

Case studies

Innovative waste heat recovery with combined adsorption and transcritical system: A new way of reducing energy use of transcritical CO2 systems at high ambient temperatures has been implemented for field-testing by Frigo-Consulting AG. An adsorption chiller that is integrated into the overall design allows the conversion of waste heat from the transcritical CO2 system into useful energy for cooling.

Innovative CO2 technology combines heating and cooling: Sainsbury’s 9300 m2 supermarket in Kent is a good example of how it is possible to sharply reduce the carbon footprint of a heating and cooling installation. Innovative Geoscart™ geo-exchange and CO2 transcritical booster refrigeration systems from SCM Frigo and SWEP in combination with an intelligent energy management system are expected to reduce the total energy consumption by 30%.


By team (@r744)

Dec 27, 2011, 08:50

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