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market research 1 BAHÇELİEVLER Carrefour Turkey’s First Refrigeration System with CO 2 Case Study for United Nations Environment Programme Jump Start Project July 2010
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BAHÇELİEVLER Carrefour
Turkey’s First Refrigeration System with CO2
Case Study for United Nations Environment Programme
Jump Start Project
July 2010
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Abstract
The increasing focus on reducing the environmental impact arising from its food
retail activities has led Carrefour to commission the construction of the first
subcritical CO2 refrigeration system in Turkey. This case study outlines the
motivation to build the country’s first cascade system using a natural refrigerant in
the Bahçelievler Store in Istanbul in August 2009.
The use of the CO2 cascade refrigeration system has led to substantial direct
emissions savings from the refrigerant use as compared to HCFC-based systems and
HFC-only units, as well as significant energy reductions and resulting financial
savings of up to 40%. Installation and maintenance were carried out at similar costs
than an HFC-only system. In its 10 months of operation the system has performed
with high reliability and safety. It hence qualifies as a technically feasible, safe, and
energy-efficient replacement option to HCFC-based commercial refrigeration in
developed and developing countries, also and especially in warm climates.
Background
Policy
Montreal Protocol: Turkey signed the Montreal Protocol and the Vienna Convention in 1991, and
ratified the London and Copenhagen Amendments in 1995. It operates under Article 5 of the Montreal
Protocol and is thus legally required to phase out Ozone Depleting Substances (ODS) by 2010. The
country adopted an accelerated phase out of some ODS listed in Annex A and B of the Protocol. Turkey
was the first Article 5 country to promulgate a National Ozone Policy and associated regulations to
phase out the import and production of ODS-using products. In 1997, Turkey received an award from
the Montreal Protocol as one of the 9 most successful Article 5 countries in implementing the treaty.
Kyoto Protocol: Turkey signed up to the Kyoto Protocol only in February 2009. Turkey was not a
Party to the convention adopted in 1992 when the Kyoto Protocol was negotiated, and it is not
currently included in the agreement's Annex-B, which includes 39 countries that are obliged to reduce
their greenhouse emissions to 1990 levels between 2008 and 2012. Among all Annex I countries,
Turkey has the highest rate of increase in emissions since 1990 (82 percent) and is the 24th largest
carbon emitting country in the world1.
1 UN Statistics Division, Millenium Goal Indicators, last updated 14 July 2009: http://mdgs.un.org/unsd/mdg/SeriesDetail.aspx?srid=749&crid
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The Bahçelievler Store
Location, Working Hours & Sales Area
The Bahçelievler store has a total sales area of 7,778 m2, and a net constructed area of 12,001 m2. One
third of the total area is dedicated to refrigeration and cooling equipment.
Store Layout & Location of CO2 Low-Temperature and Island System
The supermarket is located in Adnan Kahveci Bulvarı E-5
Yolu Yanı Bahçelievler İstanbul no:227. It was opened to
the public in August 2009.
Daily working hours are from 10:00 am to 10:00 pm.
The Bahçelievler Carrefour supermarket uses CO2 as a refrigerant in its deep freeze zone ( ), and in one
island refrigeration system ( ).
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The CO2 Cascade Refrigeration System
System Type
The system selected by Carrefour is a CO2-R404a Cascade System. It supplies the medium
temperature (MT) refrigeration units and the CO2 condenser with R404a, and the low temperature (LT)
units with CO2 (R744). The CO2 rack was designed by the Italian manufacturer enEX, while the
installation and commissioning was carried out by Turkish market leader Cözüm Soğutma in June 2009.
37 employees were involved in the installation of Turkey’s first CO2 cascade system.
The plan of the roof shows the location of the centre of the refrigeration system. Also indicated are the two locations of the deep-freeze zone and the island system within the store (red dotted lines).
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The installation features a high temperature
(HT) rack and a cascade system bringing
together the medium temperature (MT) and
low temperature (LT) units (see table). As
the cascade solution is so dynamic, it was
decided to further stabilise the installation
using a capacity controlled compressor for the MT units and an inverter-driven compressor for the LT.2
The system is equipped with a management and electronic monitoring system that allows for the
control of floating evaporation temperature of CO2 by taking into account the outside temperature
conditions. This further increases efficiency and hence leads to a reduction in energy expenditure.
System Layout
2 CAREL Industries S.r.l., “CARREFOUR and CAREL develop the first CO2 installation in Turkey”, February 2010
The CO2 compressor pack comprising 3 SCC 380B The refrigeration system commissioned models designed by Dorin. and installed by Cözüm.
Above / Right: System Scheme CO2-R404 cascade system Right: 1 - R404a rack; 2 - MT units; 3 - LT condenser/condensers; 4 - CO2 rack; 5 - LT units
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Operating Conditions
CO2 System R404a System
Evaporation : - 35 Evaporation : - 10
Condensation : - 5 Condensation : + 50
Compressor Type : Dorin SCC 380B x 3 Compressor Type : Copeland D6DJ 4000 x 5
Refrigeration Capacity : 40,62 kW/h Refrigeration Capacity : 306,5 kW/h
Cooled Products : Deep freeze products Cooled Products : Meat and dairy products
Energy Consumption : 28,2 kW/h Energy Consumption : 155 kW/h
Prepared Area with R404a:
Evaporation : 0
Condensation : + 50
Compressor Type : Copeland ZB 45 x 4
Refrigeration Capacity : 50,4 kW/h
Cooled Products : Prepared area
Energy Consumption : 21,2 kW/h
Involved Partners
CO2 Rack Manufacturer System Commissioning & Installation
enEX S.r.l. Cözüm Soğutma
via Camalò 22 Atatürk Bulvarı No: 45,
31050 Ponzano Veneto (TV), Italy 41400 Gebze/Kocaeli, Turkey
http://www.enex-ref.com/ http://www.cozumsogutma.com/
System Management & Controls CO2 Compressors
CAREL Turkey Officine Mario Dorin S.p.A.
CFM Sogutma ve Otomasyon San. Tic. LTD via Aretina 388
1201 Sok.No:13/Z 21 Izmir, Turkey 50061 Compiobbi (FI), Italy
http://www.cfmsogutma.com/ http://www.dorin.com
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The Analysis
Motivation for the Switch to a non-HCFC System - Overview
Technology: From a technical point of view, the cascade system is one of the most consolidated
solutions in the commercial refrigeration market. Carbon dioxide has established itself as a preferred
cooling carrier fluid for the LT units in commercial refrigeration. CO2 is one of the leading candidates to
replace current synthetic refrigerants - both HCFCs and HFCs -, given its excellent heat exchange
properties, its compatibility with the most commonly used materials and oils in the installations. System
manufacturers and component suppliers have gained large experience with the design of cascade
systems, and offer standardised solutions that do not pose any technical challenge during installation,
maintenance, and end-of-life treatment.
Carrefour confirms that the retailer has done an inventory of the state of its refrigeration
equipment and their leakage rates in 2008 and 2009. As a result, the company decided for
climate-friendly refrigeration systems to cover newly built installations or installations that are
obsolete and need to be replaced. While compliance with the new HCFC requirements is a
priority for the retailer, this diagnosis has led Carrefour to explore new climate-friendly
refrigeration options in order to also address the second biggest source of greenhouse gas
emissions in its stores, due to chemical refrigerant leakages.3
Market: Figures differ, but it is estimated that CO2 cascade systems are employed in the range of
several thousand units in the European Union alone. Highest penetration rates for CO2-only (transcritical
operation) and CO2 cascade systems (subcritical operation) can be found in Denmark (100% market
penetration), Scandinavia, and Switzerland. High adoption rates in developed countries provide a
unique opportunity for developing countries to benefit from the design, installation, and maintenance
expertise already gained, at lower costs than in early days of CO2 technology. CO2 as a refrigerant is
available worldwide, posing no restrictions for its sourcing worldwide, as opposed to synthetic fluids.
Carrefour states that the market penetration of CO2 commercial refrigeration could be further
accelerated if qualified contractors were more widely available to cater for the needs of the
booming CO2 refrigeration market. This is relevant for countries outside the European market
and more particularly in Asia and Latin America.4
3 Carrefour group Sustainability Report 2008: http://www.carrefour.com/cdc/responsible-commerce/sustainibility-report/ 4 Interview Jean-Francois Brunet, Director of Assets Carrefour group, with R744.com, 12 February 2010: http://www.r744.com/articles/2010-02-12-10-carrefour-stores-in-europe-run-with-r744-more-to-come.php
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Environment: The use of the natural refrigerant reduces the presence of HCFCs/HFCs in the entire
installation, making the system more environmentally sustainable. CO2 occurs naturally, has no Ozone
Depletion Potential, and a Global Warming Potential of 1 (reference case). In cascade refrigeration
systems it leads to significant energy savings in all climates, including in warm ambient temperatures.
Carrefour states that greenhouse gas emissions control, following a phase-out of ODS, is taking
priority in the construction of food retail stores worldwide. This is especially critical for the
European Union accession of Turkey, where the recent entry into force of the HCFC phase-out
has led food retailers to make crucial decisions for sustainable refrigeration.5 In total, Carrefour
has up to 700 stores to retrofit by 2015 worldwide that amount to 500 tones of R-22.
Costs: Due to the standardisation of systems and components for cascade solutions, the cost for
design, commissioning, installation, and maintenance has decreased already significantly, amounting to
around €40,000. A serial production of cascade systems in more world regions, a wider availability of
trained personnel, and increasing raw material costs for chemical refrigerant supplies (HFCs) will
furthermore reduce upfront costs for CO2 cascade systems. A slightly higher initial investment – as
compared to HFC-only systems – is offset by energy savings throughout the system’s life cycle.
Carrefour decided to invest on CO2 cascade refrigeration systems for freezing foodstuffs as the
prices of these systems have become more affordable and thus make sense from an investment
point of view. The food retailer also confirms that CO2 refrigeration could help the retailer
minimise its direct greenhouse gas emissions while using an energy efficient refrigerant that
would keep energy bills unchanged.
To date, ten retail stores across Europe have already been retrofitted to CO2 refrigeration in
France, Belgium, Italy, and Turkey.6
Safety: Although commercially viable natural refrigerants systems have been reliably working in a high
number of applications around the world (ammonia in industrial refrigeration; hydrocarbons in
domestic refrigerators; carbon dioxide in hot water heat pumps), different safety standards and other
use restrictions impede their wide-spread and consistent use. Both ammonia and hydrocarbons have
been successfully used in supermarket refrigeration systems.
Carrefour confirms that it has opted for a CO2-R404a cascade system due to non-harmonised
safety regulations and industry standards on the use of other environmentally friendly natural
refrigerants, including ammonia and hydrocarbons.7
5 REGULATION (EC) No 1005/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 September 2009 on substances that deplete the ozone layer OJ L 286/1 of 31.10.2009 6 Interview Jean-Francois Brunet, Director of Assets Carrefour group, with R744.com, 12 February 2010
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Impact of Switch to Alternative - Environment
Carrefour lists several ongoing restrictions on the use of HFCs in other countries and world regions as a
major incentive to adopt non-HFC solutions as a direct leapfrog from HCFC as widely as possible.
Besides the Kyoto Protocol, the following initiatives were highlighted to have a high impact on the
company’s strategy regarding its refrigerant use:
- F-Gas Regulation: The European Union is putting use restrictions on high-global warming
fluorinated gases (F-gases) in stationary refrigeration, air-conditioning and heat pump
equipment. The Regulation addresses the containment, use, recovery, and destruction of F-gases,
their labelling and reporting, the placing on the market restrictions, and the training and
certification of servicing personnel and operators involved in handling F-gases equipment.8
- MAC Directive: The European Union Directive bans R134a as a high-global warming
refrigerant from mobile air conditioning systems in passenger cars. Only refrigerants with a GWP
of below 150 will be allowed in new model types as from 1 January 2011, with a complete
phase-out of high GWP refrigerants by 2017. As R134a is also one of the most widely used
refrigerant alternatives for R22 in commercial refrigeration, this scheduled phase-out is likely to
be extended to cover also stationary refrigeration systems in Europe.9
- National Regulations: Denmark today has a close to 100% market penetration rate of HFC-
free refrigeration systems. This is the result of high taxation on the use of HFC refrigerants
introduced in 2003 (linked to their GWP value), coupled with a 10 kg limit of HFCs per
refrigeration system as from 2007 on. This combined approach has led to a mass market for CO2
transcritical and CO2 cascade systems, and has created the necessary expertise to export HFC-free
technology to countries outside Denmark.
The Danish HFC tax scheme has been adopted by Sweden and Norway. The UK is currently
considering restrictions on the use of HFCs in supermarket refrigeration, and is likely to introduce
an HFC tax in the coming years. A similar move is to be expected in other countries where
natural refrigerants (CO2, ammonia, hydrocarbons) are becoming increasingly popular.
As a conclusion, Carrefour Turkey confirms that “HFC is not a sustainable technology solution in the
long term”, and that it will be used “only if there are no other technically feasible, secure, low-cost and
7 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010 8 REGULATION (EC) No 842/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 17 May 2006 on certain fluorinated greenhouse gases, OJ L 161/1 of 14.06.2006 9 DIRECTIVE 2006/40/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 17 May 2006 relating to emissions from air-conditioning systems in motor vehicles and amending Council Directive 70/156/EEC, OJ L 161/12 of 14.06.2006
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environmentally friendly alternatives” to HCFCs. The Turkish subsidiary of the Carrefour group supports
the “technical developments with natural fluids and hydrocarbons”, and hence the direct leapfrog from
HCFCs to natural refrigerants, such as CO2, actively.10
Following Carrefour’s statement about the restricted use of HFCs in new installations, it should be
assumed that cascade solutions using only natural refrigerants – namely CO2 and ammonia (R717), or
CO2 and hydrocarbons – are also already available and successfully installed. These are technically
feasible, and a more environmentally friendly solution than cascade systems using HFCs. However, they
might face restrictions due to differing safety standards in some countries, a lack of well-trained
installation and maintenance staff, and slightly higher initial investment costs. This can be assumed to
be the reason why the Bahçelievler cascade system is equipped with R404a on the MT side. Carrefour
Turkey has opted for CO2 as the refrigerant is naturally occurring, non-toxic, and non-flammable.
However, the Carrefour group confirms that in installations with a continued use of fluorinated gases -
namely HFCs - it plans to reduce leakages as much as possible and that a stricter containment policy will
be pursued aiming at minimising global warming leakages as much as possible.11
Impact of Switch to Alternative – Energy Use
The distribution of energy consumption in Carrefour markets of different sizes clearly shows that
refrigeration is taking the largest share in used energy in stores up to a floor size of 2500 m2.12 The
majority of Carrefour stores falls under the category of stores not exceeding 1,200 m2. In its 2008
Sustainability Report, Carrefour has pledged to reduce energy consumption by 20% per m2 of sales
area by 2020, as compared to the baseline year 2004.13 To achieve this target, a substantial reduction in
the use of electricity to run the refrigeration units is needed.
10 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010 11 Interview Jean-Francois Brunet, Director of Assets Carrefour group, with R744.com, 12 February 2010 12 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010 13 Carrefour group Sustainability Report 2008
Distribution of Energy Consumption in Carrefour markets - By size of supermarket
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Carrefour Turkey confirms that the Bahçelievler cascade system is “definitely more efficient than HFCs
for deep freeze use in Turkey”. As compared to the EDİPİPLİK 212 MINUS store using an R404a-only
system, the CO2 cascade system is 40% more energy-efficient. This results in savings of 115.7 kW per
day, and 41,659.2 kW per year. Translated into financial savings this amounts to daily savings of 19.70
Turkish Lira (~9.90 EUR / 13.25 USD) and to an annual savings of 7,082.10 TL (~3,545 EUR / 4,761
USD) 14
As confirmed by results of latest simulation programmes comparing the energy efficiency of CO2
systems with units based on conventional refrigerants, CO2 cascade system will be more energy-
efficient than a CO2-only transcritical option in higher ambient temperatures.15 The below chart
provides an overview of average annual temperatures in Istanbul.16
14 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010 15 Pack Calculation II is a simulation tool developed for calculating the energy use of refrigeration systems with CO2 as the refrigerant. It offers comparison of different refrigeration systems based on the refrigeration cycle and compressor used as well as their geographical location. The tool can be downloaded free of charge from: http://www.ipu.dk/English/IPU-Manufacturing/Refrigeration-and-energy-technology/Downloads/PackCalculation.aspx 16 World Meteorological Organisation, accessed 20 April 2010; http://www.worldweather.org/014/c00047.htm
Average annual temperatures in Istanbul, Turkey. During summer time, average ambient temperatures can reach close to 30°C.
Energy Comparison CO2 cascade Energy and Price Comparison CO2 cascade system system with conventional R404-only system with R404a-only system
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Impact of Switch to Alternative - Technology
The installation process for the CO2 refrigeration rack has been found to be similar to the one for HFC
system. The system uses copper pipes where higher pressure levels must be resisted than in the R404a
system. As CO2 is a more efficient refrigerant than R404a, the pipe diameter needed is smaller than for
R404a systems.
Due to the relative small vapour volume of the CO2 system and its large volumetric refrigeration
capacity, the CO2 system is relatively sensitive to capacity fluctuations. It is therefore important to
design the liquid separator with sufficient volume to compensate for the small vapour volume in the
pipes. Adequate capacity control is important.17
The CO2 compressor used in the cascade solution compares to an R404a compressor for DX systems as
follows, where an equivalent capacity for the CO2 model comes at significantly reduced weight and
motor size:
17 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010
CO2 Compressor Design Comparison of CO2 Compressor for Cascade System with comparable model for R404a DX system
Above: Comparison of Compressor Displacement Right: Comparison of Refrigerants – Pipe Cross Section Area Wet Return / Liquid Lines (-250 kW – 40 / -15°C)
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Impact of Switch to Alternative – Safety & Reliability
The commissioning and installation was performed without any major issues as constructors and
installers were experienced with taking appropriate precautions for handling a high-pressure system.
According to CETINEL A.S., the distributor of the CO2 compressors in Turkey, HFC systems are still
considered to be the most common and well-known alternative to HCFC systems. This leads to a lack of
technicians experienced with the installation of CO2 refrigeration systems in Turkey. However, CETINEL
confirms that manufacturers are gaining expertise in Turkey, suggesting a more wide-spread use of this
technology in markets outside the European Union – right now the strongest market for CO2 systems.18
Regarding reliability and user experience, Carrefour confirmed that the CO2-R404a cascade system in
the Bahçelievler store has been working for nearly 10 months with high reliability.19
Impact of Switch to Alternative - Costs
The installation process for the CO2 refrigeration rack has been found to be similar to the one for the
HFC system at comparable costs, even for this first installation in Turkey. As a result, Carrefour
estimates that with increasing supply and demand in Turkey and other countries, system installation
and the system itself will be more cost-competitive still.
According to CO2 compressor manufacturer Dorin the compressor model used in the cascade system
costs about 6 times less than its R404a equivalent.20
Operation costs were significantly reduced due to an increased efficiency of compressors and heat
transfer processes. In addition, the low cost of CO2 as a refrigerant and the reduced material use due to
smaller diameters has lowered overall costs.
Maintenance costs will be comparable to an HFC system. Until now, and in the space of 10 months, the
system has not needed any maintenance work.
18 Communication with Vahe Dagdevirenel, CETINEL, 20 April 2010 19 Communication CarrefourSA Carrefour Sabancı Ticaret Merkezi A.Ş., 16 April 2010 20 Communication with Giacomo Pisano, Officine Mario Dorin S.p.A., 20 April 2010
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Conclusion & Outlook
The installed CO2 system has delivered in environmental, safety and economic terms.
During a visit to the site on 27 April, Carrefour Turkey and representatives of most
involved partners confirmed their positive experience with the design,
commissioning, installation and operation of Turkey’s first CO2 commercial
refrigeration system. Carrefour expressed its wish to eliminate all F-gases still
contained in the cascade solution to move towards a natural refrigerants-only
solution in the future. Major reasons cited are direct leakages of R404a that would
still put a significant burden on the environment, as well as economic considerations
where the continuous market price increase for chemical refrigerants would render
their use increasingly less attractive.
As a concrete result, Carrefour is now enquiring on the possibility to implement a
CO2 direct expansion (DX) system. Any information on the components used and
servicing needed are actively sought and welcomed.
CONTACT
Ms Nina Burhenne Ms Christianna Papazahariou Mr Marc Chasserot
[email protected] [email protected] [email protected]
+32 473 468 194 +32 484 138 069 +32 465 972 006
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ANNEX I - Best-Practice Example: Tesco Ramsey Store
The use of carbon dioxide in retail refrigeration is not new. Over the past 10 years its use has increased
exponentially across Northern Europe. More and more UK retailers are now also committed to the use
of only natural refrigerants – CO2, hydrocarbons, ammonia – in retail.
Designed as the world’s first zero-carbon store, the Tesco Store at Ramsey, UK, is completely HFC-free.
The supermarket uses CO2 and hydrocarbons throughout its fridges, freezers, heating, ventilation and
air conditioning systems in the store and petrol kiosk. The CO2 system is the result of two years of
intensive work by Tesco and Star Refrigeration, seeking to develop a standard CO2 transcritical plant
that could be easily rolled out throughout a large number of stores.
Motivation for Switch to an HFC-free Alternative
Tesco defined the following key criteria for any new refrigeration system used:
• Eliminates the use of high global warming HFC refrigerant
• As efficient as “state of the art” HFC equipment or better
• A single refrigerant can be used for both chill (HT) and freezer (LT) cooling requirements,
simplifying plant design, training requirements and aftercare.
• A standard design that can be repeated across the estate and is easy to replace within the
existing estate as a retrofit
• Easy to install, maintain and service
• Legally and regulatory compliant
• Designed for a 15+ year operating life
• Supportive in reducing Tesco’s existing store refrigeration carbon footprint by 70%
The study concluded that transcritical CO2 provides the optimum solution to meet these criteria.
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System layout
A cascade solution was selected, for it provides the best balance of energy efficiency, availability and
flexibility. Each LT package cascades against two or three HT packages so that if one HT package is out
of operation, the full LT cooling capacity will remain available. The LT plant consists of three
compressors, a common oil separator, a high-pressure receiver, a liquid subcooling/suction line
superheater and three CO2 to CO2 condensers. The HT plant consists of three compressors, a common
oil separator, a gas cooler with EC fans, a high-pressure regulator, an intermediate separation vessel
and a low-pressure receiver. The change over between transcritical and subcritical operating modes of
the HT system is managed by a modular control system.
Impact of Switch to Alternative – Technology & Safety
Some observed benefits as regards technology, safety and ease of use:
• Servicing: This can be carried out without decanting any refrigerant, as the receiver is large
enough to contain the total refrigerant charge of the system
• Compressor protection: The receiver is positioned in such a way that it prevents any liquid
getting back to the compressors, hence fully protecting it against expansion valve failure –
unlike a typical R404a system.
• Design pressure: The system will run on reduced charge in the event of exceeding design
pressure but will still operate to provide partial cooling.
• Automatic power re-establishment: After power comes back on, the system operation
restarts without manual intervention, hence saving time and expenditures.
Impact of Switch to Alternative - Costs
The capital benefit in developing a standard range of CO2 packages is already apparent. Benchmarking
work with a ‘green store’ CO2 project completed in 2008 on a like for like package basis indicates a cost
saving of 22% with using the standard solution. Analysis of the operating data, particularly with the
improved HT suction pressure against design, indicate an improvement in efficiency against R404A,
giving a better life cycle cost of ownership with CO2. Analysis indicate that standardization of the
system will save 22% on the rollout costs versus bespoke solutions of the same capacity. Moreover, the
system achieves cost savings of up to 10% compared to an R404A system, as the overfeed design
reduces superheat in the cases.
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Conclusion & Outlook
The UK retailer plans to install 20-30 systems new CO2 transcritical systems in the period 2010/2011,
and 150 by 2012.
The presented case demonstrates that the development of one standard transcritical CO2 system for
future roll-out across a retailer’s entire estate is possible. It hence represents a best-practice example to
follow, as the solution developed can be manufactured by suitable suppliers and used by other retailers.
The plant design has eliminated HFC refrigerants without detriment to energy efficiency.
Most importantly, the contribution of
CO2 refrigeration in a zero-carbon
concept for food retail stores sets a
landmark for a more integrative
thinking regarding the use of renewable
and locally-sourced construction
materials, effective waste management,
rainwater collection, natural and LED
lighting, CHP, and the use of low-
energy devices (see graphic).
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ANNEX II -
Manufacturers of CO2 Commercial Refrigeration Systems
The following list provides an overview of manufacturers (and installers) of CO2 refrigeration systems for
commercial applications. It cannot be comprehensive as new players are entering the market constantly,
but provides a first indication of the global presence of refrigeration system suppliers with expertise on
R744 installations.
Company Products Country Website
Advansor A/S transcritical CO2 booster systems
for commercial refrigeration;
integrated CO2 refrigeration
units for smaller supermarkets;
CO2 modular concept for
commercial refrigeration
Denmark http://www.advansor.dk/
Alpiq InTec West
AG
manufacturing and installation of CO2 transcritical systems
Switzerland http://www.alpiq-energyservices.ch/en/about-alpiq/our-business/energy-services-companies/alpiq-intec-west.jsp
AREA Cooling
Solutions
CO2 transcritical and cascade
systems
Spain http://www.area.es/index.html
Axima
Refrigeration
(GDF SUEZ)
design to implementation and
maintenance of CO2 retail
refrigeration
France, Belgium, Luxembourg
http://www.aximaref.com/ ; http://www.aximaref.be/HTML/EN/index.htm
Birton A/S CO2 cascade systems Denmark http://www.birton.dk/
Bitzer Australia CO2 subcritical systems Australia http://www.bitzer.com.au/eng/Intro
Carrier
Commercial
Refrigeration
CO2 refrigerated and freezer
display cases as well as
refrigeration systems for
industry and commercial uses
Germany http://www.carrier-refrigeration.com/?L=3
Carter Synergy transcritical CO2 refrigeration systems
United Kingdom
http://www.cartersynergy.com/
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Company Products Country Website
Commercial
Refrigeration
Services (Pty)
Ltd
design/installation of CO2 direct expansion medium temperature systems
South Africa http://www.crservices.co.za/default.htm
Dresdner
Kühlanlagenbau
Installation of R744 refrigeration
systems
Germany http://www.dka-dresden.de/
eCO2
Technologies Pty
Ltd
adaptation several designs of
CO2 transcritical and cascade
systems to suit Australian /
South African conditions
Australia http://www.eco2technologies.com.au/
enEX design company specialised in CO2 technology including for commercial refrigeration
Italy http://www.enex-ref.com/
EPTA CO2 cascade systems Italy http://epta-italia.com/
Fri-Jado B.V CO2 system The Netherlands
http://www.frijado.nl/
Frigo-Consulting
AG
engineering of transcritical and
subcritical CO2 commercial
refrigeration systems
Switzerland http://www.frigoconsulting.ch/
Frigrite CO2 rack manufacturing and installation to showcase manufacturing and installation
Australia http://www.frigrite.com.au/
Green & Cool chiller and freezer units for CO2
transcritical and cascade
refrigeration systems
Sweden http://www.greenandcool.com/en/index.html
Groupe CSC CO2 refrigeration system for
commercial applications
featuring heat recovery
technology
Canada http://www.groupecsc.com/
Hauser GmbH CO2 system Austria http://www.hauser.com/
Hill Phoenix CO2 secondary and cascade
systems
US http://www.hillphoenix.com/
JAC AB system manufacturer that focuses mainly on industrial applications; has also reported
Sweden http://www.jacab.se/produkter/produkter.phtml
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Company Products Country Website
to have had one of its systems installed in a Swedish supermarket
Johnson
Controls
pump stations for use with CO2
as a secondary volatile refrigerant in supermarkets and a wide range of other applications
Denmark http://www.johnsoncontrols.com/publish/us/en.html
Knudsen Køling compressor pack systems based on CO2 technology; transcritical CO2 booster systems
Denmark http://www.knudsenkoling.dk/
Koxka (Ingersoll
Rand)
CO2 transcritical and cascade systems
Global http://koxka.ingersollrand.com/English/Pages/default.aspx
Kysor Warren CO2 cascade systems US http://www.kysorwarren.com/
Les Systèmes
LMP
CO2 cascade systems Canada
McAlpine
Hussmann
(Ingersoll Rand),
subcritical systems for big supermarkets
New Zealand http://www.mcalpinehussmann.co.nz/
Norild AS CO2 racks Norway http://www.norild.no/
Norsk Kulde AS Refrigeration engineering services / Installation of CO2
systems
Norway http://www.norskkulde.com/?page=25
Oaksmere Design and installation of subcritical pumped CO2 systems
United Kingdom
http://www.oaksmere.com/
Plotter & Racks CO2 cascade systems Brazil
PONTARDAWE CO2 subritical refrigeration pack United Kingdom
http://www.prplant.co.uk/
QPLAN
Refrigeration
complete solutions with its design- production- installation- and maintenance groups for all refrigeration jobs including CO2
transcritical and subcritical systems
Hungary http://www.qplan.hu/index_en.php
SANYO Electric
Co., Ltd.
direct expansion type refrigeration systems for use in supermarket freezer showcases
Japan http://sanyo.com/
SCM Frigo subcritical packs, cascade systems, transcritical chillers and booster systems
Italy http://www.scmfrigo.com/default.asp?lingua=eng&
market research
21
Company Products Country Website
Space
Engineering
Services
transcritical CO2 refrigeration plant for retail applications
United Kingdom
http://www.space-engineering.co.uk/
Star
Refrigeration
subcritical CO2 supermarket packs
United Kingdom
http://www.star-ref.co.uk/star/
Tesab refrigeration contractor installing CO2 refrigeration systems
Sweden www.tesab.se
Trondheim
Kulde
installation of CO2 systems Norway http://www.trondheimkulde.no/
WR
Refrigeration
Ltd
installation of CO2 systems United Kingdom
http://www.wrref.com/
ANNEX III - Glossary of Terms
GWP - Global Warming Potential
HCFC - Hydrochlorofluorocarbon
HFC - Hydrofluorocarbon
DX - Direct Expansion
HT - High Temperature Application
LT - Low Temperature Application
MT - Medium Temperature Application
ODP - Ozone Depletion Potential
ODS - Ozone-Depleting Substance
R22 - Chlorodifluoromethane (HCFC)
R404a - Near-azeotropic blend of R143a, R125, R134a (HFC)
R744 - Industry Nomenclature for CO2 as a refrigerant
