No. 114: Hot water heat pump for effective utilization of waste heat (July 27, 2010)

Tokyo Electric Power and Mitsubishi Heavy Industries jointly developed an industrial hot water heat pump for effective utilization of waste heat contained in plant effluent. The newly developed pump halves carbon dioxide emissions as compared with the city gas boiler, and it can be used for food and beverage plants because its hot water temperature is about 90 degrees centigrade, 10 degrees higher than that of the existing industrial heat pumps. In addition, it works in the temperature range between 10-50 degrees instead of 35-50 degrees that is workable for the existing hot water heat pumps, and it can collect waste heat contained in effluent from refrigerating machines. The new heat pump with the thermal capability of 547 kW is priced at 27 million yen. It can reduce the annual energy cost by 38% and carbon dioxide emissions by 56% as compared with the city gas boiler. Mitsubishi Heavy will put it on the market within this month.