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Sylvian Gillaux of Sanden brought positive news with the announcement that Sanden will focus on CO2 technology in their activities in the HVAC&R market. This was accompanied by an update on a new Sanden office opened up in Renne, France which will focus on activities in Europe, the Middle-East and Africa.
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Nina Masson of shecco presented the pertinent market trends that are developing elsewhere in the world with a particular focus on China and North America. Masson also presented findings from shecco’s upcoming GUIDE China – State of the industry 2015 as well as detailing new refrigerant legislation in the U.S. which authorised the use of isobutene and propane in certain applications.
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Parallel session: Heat pumps |
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Mayekawa's Jan Boone presented a case study describing an industrial bakery plant located in Mouscron, Belgium, requiring a hot water heat pump for an extension of its production capacity, which would reduce energy consumption/energy costs in order to contribute to the company's sustainability program. To produce hot water at 65°C an ammonia (NH3) heat pump was used, with a condensing temperature at 67°C corresponding with a pressure of 29.5 barg. The heat pump uses the ammonia refrigeration system condenser-heat as the heat source, giving a positive impact on the condenser load and recovering the residual heat for hot water production and process water, to provide ideal warmth and humidity for the rising of the bread-products in the plant.
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Mitsubishi Heavy Industries (MHI) presented their Q-ton CO2 heat-pump water heater, noting its efficiency gains and detailing the different applications that MHI’s Q-ton is being used for in Japan.
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Michael Miranda of boostHEAT presented a new type of residential CO2 heat pump which is fuelled by natural gas. The new renewable heating and cooling system for water was technically detailed and the potential applications were highlighted.
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Raniero Trinchiere of ENEA presented ENEA’s progress in the development of a new 30kW CO2 heat pump for residential heating of hot water as well as a 50kW commercial heat pump. The construction of the heat pump was detailed, including its compressor which utilises 2 cylinders as well as the latest results from recent tests of the heat pumps.
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Johnson Controls worked with a leading UK food supplier, Cranswick Country Foods, to optimise a new industrial refrigeration system of the pig abattoir in Watton, Norfolk. This presentation shows that by installing Sabroe industrial refrigeration heat pump reciprocating compressors, the company was able to reduce the energy costs by £500k per year, increase the productivity by 30% and decrease the weight loss of the carcasses from 2,3% to 1,4%. This solution set a new industry standard, as it not only monitors and trends the performance of the plant, but also actively hunts for optimal set points to reduce energy usage.
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Jose Miguel Coberan investigated propane as an alternative in a water-to-water heat pump booster for sanitary hot water production. In comparison to CO2, Corberan, on behalf of the Universitat Politècnica de València, noted that at different condensation temperatures, propane had an optimal for each temperature. Corberan also said the use of hydrocarbons in this application allows for lower charges and lower displacement compressors compared to R134a and R1234yf.
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Paul De Larminat showcased the test results of Johnson Controls’ heat pump using water vapour as the working fluid. To plug a specific hole in the market, JCI teamed up with Electricité de France (EDF) to develop high pressure heat pumps for the industrial market (600kW at 90/130°C). De Larminat extolled the many virtues of using water vapour: Its low cost, excellent efficiency at high temperatures and ability to be used in closed and open loops.
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