Events
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Parallel session: Industrial Ref. & Other Applications |
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Lionel Pourcheresse - Efficient and sustainable transport refrigeration unit using CO2
PDF document
published on 16 March 2015
Together with UK retailer Sainsbury’s, in 2013 Carrier Transicold started field trials of its first trailer refrigeration system using CO2, based on a NaturaLINE unit. In 2014 the new E-Drive Natural Refrigerant Trailer prototype was launched, a unit dedicated to road transport using a closed-loop system. This presentation describes the prototype (world premiere) which is fully autonomous and driven by an independent diesel engine. It comes charged at the factory with a defined amount of CO2 refrigerant and this quantity of natural refrigerant stays inside the refrigeration circuit, is compressed then expanded and compressed again in a closed loop system. The benefit to the user is that there is no need to recharge the system every day and no need for a heavy infrastructure to store the natural refrigerant. This presentation paves the way for future refrigerated transportation systems and is in-line with the European F-Gas legislation aimed at decreasing the use of high-GWP refrigerants.
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Anthony Bour - CryoTech - Clean, sustainable & cost effective temperature control for retail & distribution
PDF document
published on 16 March 2015
Anthony Bour describes Thermo King's CryoTech technology using liquid CO2 (R744) in an innovative open-loop system, delivering refrigeration, significant reduction in emissions and improved performance over conventional diesel-powered units. The recovered R744 used for cooling is obtained as a by-product from industrial processes that would otherwise have been released into the atmosphere. As such, there are no new carbon dioxide emissions during operation of the CryoTech system. Thermo King CryoTech is a mature technology, with near 1000 units on the European roads. Delhaize Belgium was the first retailer in Belgium to start Sustainable Delivery operations with CryoTech Temperature Controlled Solutions.
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Kent Hofmann - First transcritical CO2 ice rink in Europe
PDF document
published on 16 March 2015
Green & Cool presented a case study on the first ice rink in Europe to use CO2 technology, located in Gimo, Sweden. The ice rink was fitted with a new energy management system based on transcritical CO2 refrigeration. The system allows for reduced energy usage, mainly due to heat reclaim, which is the dominating saving-factor for the ice rink owner, together with lower service costs. In order to fully utilise the heat recovery potential of CO2, the heat reclaim system was designed and adapted to fit the properties of CO2 (R744). Another special feature is the geothermal connection which provides a “warm climate” as well as a “cold climate” solution. After three months of operation, the daily average energy usage is down to 1500 kWh from 4200 kWh, which suggests that the seasonal energy usage will be about 350 000 kWh. This is an energy saving for the municipality of about 600 000 kWh a year, corresponding to over 60% energy cost reduction.
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Garry Broadbent, Dave Blinkhorn - HOTREC CO2 refrigeration - Canary Wharf London by Green Cooling
PDF document
published on 16 March 2015
Green Cooling presented a case study about a CO2 food-service refrigeration system installed at KPMG Canary Wharf London. This installation is important to the UK market for delivering a substantial CO2 installation within a HORECA application, providing chilled/ cold storage and also kitchen/ display refrigeration. The system features a twin refrigeration Enex CO2 pack design with 6 Dorin compressors. Additionally, a 4,500 litre hot water production system was incorporated within the CO2 system design, in order to reuse the waste heat and provide more overall system efficiency. This presentation emphasises the practical nature of utilising CO2 refrigeration within a centralised system as an alternative to conventional designs, whilst satisfying the UK BREEAM sustainable building standard.
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Paul Rivet - Transcritical R744 for food industry
PDF document
published on 16 March 2015
AF Consulting presented a case study about a CO2 transcritical system in a frozen fish "bouchon" factory made up of 2 continuous freezers with a 350 kW capacity at - 40°C, as well as frozen storage rooms with a 100 kW capacity at -25°C, and working areas for 150 kW at +8/+10°C. Instead of using ammonia as the refrigerant, a CO2 transcritical alternative was selected in order to comply with French safety standards. The system offers advantages such as good COP considering the local ambient conditions and night running time; lower costs for the distribution piping, full heat recovery, simpler refrigerant management and a good compromise on investment/ running costs.
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Juan Carlos Rodríguez - Fribin: Energy efficiency combined with increased safety thanks to CO2 refrigeration
PDF document
published on 16 March 2015
Johnson Controls described a FRIBIN meat processing facility in Spain using a centralised CO2 industrial refrigeration system in order to improve the quality of production and reduce long-term operational costs.The solution provides a saving up to 2.600.000 kW per year to realise €380.000 savings. Before renovation, the plant had four machine rooms dating back to the 70's, 80's and 90's. One of these machine rooms was renovated in 2004 with 3 new Sabroe screw compressors, and the remaining three machine rooms were unified into one, thus limiting the number of compressors and maintenance costs. This solution was implemented in two phases, with no disruption to production, and allowed for better performance, consumption and control.
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Timothy Lorkin - Magnetic refrigeration - A natural refrigerant technology: integration into EU Regulations
PDF document
published on 16 March 2015
Parallel Session: Commercial Refrigeration Applications 1 |