22 September 2011

RATINGPRACTICE OF DISTRICT HEATING & COOLING FACILITIES WITH HEAT PUMP USING HEAT OF STREAM WATER

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The district heating & cooling (DHC) facilities at Hakozaki use the heat pump
using the heat of the river. This was a case with the first, real river heat use in Japan, and operation started in 1990. At that time, The river mixed living drainage and garbage and was dirty. In addition, seawater flowed in the getting water point by the tide, too. The getting water system examined to correspond to such a water quality, and was constructed. This getting water system became the standard with a district heating & cooling facilities in Japan that
used the stream water or seawater afterwards. This time, it reports on three themes of the following.
1. Role of composition part of getting water system that solves problem caused when stream water is taken.
2. Operation condition and maintenance situation of the getting water system. Obtained through operation for 21 years
3. Device and ratingpractice in system operation.