Events
Sponsors
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Yoshinari Okuyama - Phase-out f-gases in commercial refrigeration
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published on 4 February 2014
Yoshinari Okuyama from Coca-Cola Tokyo Research & Development Co. Ltd. spoke about the company's goals to phase-out HFCs and adopt natural refrigerants instead. So far, The Coca Cola Company has 1,000,000 HFC free bottle cooler units in operation. In Japan, significant progress has been made in the adoption of HFC-free vending machines, and all new vending machines purchased in Japan are now HFC-free. Yoshinari also spoke about the company's involvement with 'Refrigerants Naturally!' and the Consumer Goods Forum.
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Katsuyoshi Nihei - State-of-the-art logistics center with Natural Refrigerants
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published on 4 February 2014
Katsuyoshi Nihei from CO-OP talked about the CO-OP TOSU cold distribution centre, which uses an NH3/CO2 freezing system. The system only uses a small quantity of ammonia, addressing the associated safety concerns. CO2 heat pumps proved space heating. Nihei also spoke about the CO-OP's Onomichi cold logistics centre, which was built in 2012 and uses six units of NH3/CO2 systems and four CO2 heat pumps. The project was awarded the "2012 Japan Prestressed Concrete Institute Award."
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Technology case studies - Heat Pumps |
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Fujio Komatsu - Industrial heat pump system using CO2 refrigerant in Eco-Cute, Eco-Sirocco and H2O refrigerant in Adref-Noa
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published on 4 February 2014
Fujio Komatsu, Chief Engineer at Mayekawa, presented the company's industrial heating and cooling technologies, as well as two CO2 heat pump units, the Eco Cute "unimo" and "Eco-Sirocco," and an adsorption chiller utilising solar energy. He highlighted specific projects from around the world, including a CO2 heat pump installed in Switzerland and an adsorption chiller packaged unit installed in Mexico and in a high school in Japan. Komatsu concluded that Mayekawa actively promotes using natural working fluids in the industrial field.
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Hiroshi Takigawa - CO2 heat pump water heater for commercial use
PDF document
published on 4 February 2014
Hiroshi Takigawa, Sales Manager at Mistubishi Heavy Industries (MHI) Air Conditioning & Refrigeration System Solutions Division, introduced the company’s new CO2 heat pump, the Q-Ton. With a rated heating capacity of 30kW, maintained in ambient air temperatures as low as -7°C, the air source heat pump is probably the first to use a two-stage CO2 compressor. The scroll and rotary compressor was developed to avoid the significant reduction in heating capacity that occurs with a drop in ambient temperature to below 7°C for CO2 heat pumps. The average measured COP of the heat pump is measured at 3.04.
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Kazuyuki Ochiai - Commercial CO2 heat pump - case studies from Asian countries
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published on 4 February 2014
Nihon Itomic first introduced an industrial Eco Cute in 2002 and at the end of 2013 more than 2,000 had been sold domestically and internationally, according to Itomic’s Managing Director, Kazuyuki Ochiai. With over ten years experience in the heat pump market, Nihon Itomic has developed unique expertise, enabling them to optimise the operation of their Eco Cute line up: Small sized Eco cute with a Panasonic compressor (9kW/12kW), Medium sized Eco Cute with a Dorin compressor (26kW/30kW), Large Eco Cute with an inverter and a Bitzer compressor (50/80kW).
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Kazuyuki Ochiai - 環境意識の高まりとニーズの多様化と共に普及拡大する自然冷媒(CO2)ヒートポンプ給湯機
PDF document
published on 4 February 2014
Nihon Itomic first introduced an industrial Eco Cute in 2002 and at the end of 2013 more than 2,000 had been sold domestically and internationally, according to Itomic’s Managing Director, Kazuyuki Ochiai. With over ten years experience in the heat pump market, Nihon Itomic has developed unique expertise, enabling them to optimise the operation of their Eco Cute line up: Small sized Eco cute with a Panasonic compressor (9kW/12kW), Medium sized Eco Cute with a Dorin compressor (26kW/30kW), Large Eco Cute with an inverter and a Bitzer compressor (50/80kW).
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Naruhide Kimura - High efficiency residential air-to-water heat pump with CO2
PDF document
published on 4 February 2014
According to Denso’s Naruhide Kimura, since the 2011 earthquake heat pump sales, which had reached a cumulative peak in sales of 4 million units started to decline. However the inclusion of heat pump water heaters in the Japanese Top Runner Approach in 2013 could reverse this negative trend. What is more, the Eco Cute sector is continuing to innovate. Whilst in the residential sector Denso has developed a multi-functional CO2 heat pump that also supports space heating, in the commercial sector Mitsubishi Heavy Industries (MHI) has developed a CO2 heat pump that is efficient at -25°C.
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Naruhide Kimura - CO2冷媒を使用した 高効率な家庭用ヒートポンプ給湯機
PDF document
published on 4 February 2014
According to Denso’s Naruhide Kimura, since the 2011 earthquake heat pump sales, which had reached a cumulative peak in sales of 4 million units started to decline. However the inclusion of heat pump water heaters in the Japanese Top Runner Approach in 2013 could reverse this negative trend. What is more, the Eco Cute sector is continuing to innovate. Whilst in the residential sector Denso has developed a multi-functional CO2 heat pump that also supports space heating, in the commercial sector Mitsubishi Heavy Industries (MHI) has developed a CO2 heat pump that is efficient at -25°C.
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Rolf Christensen - Heat recovery in apartment buildings with transcritical CO2 heat pump
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published on 4 February 2014
Alfa Laval’s Rolf Christensen presented a CO2 transcritical heat pump project in Lund, project inspired by the success of the Japanese Eco Cute heat pump, using Alfa Laval heat exchangers. To provide domestic hot water and heating for 24 apartment buildings with more the 400 apartments two different capacity heat pump units were developed: 54 and 68 kW. According to Christensen the total annual energy savings for this project are about €1.1 million, and the pay back period is expected to be around 5 years.
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