A Study of District Heating and Cooling Considerating the Climate of Japan

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The purpose of this study is grasping the characteristics of energy demand depends on defference of the climate in all parts of Japan and examining the methods of utilizing unused energy and co-generation.First, we surveyed the facilities of DHC in Hokkaido, Tokyo and west Japan area, and grasped the district characteristics. According to this survey, the heating load density is highest in Hokkaido area, and the cooling load density is highest in west Japan area.We proposaled new energy supply system, utilizing solar energy, unused river energy and co-generation. And examined the effects of introducing systems into Sapporo, Tokyo and Fukuoka area. As a consequence, Fukuoka area was best in introducing unused energy because Fukuoka is in favor of the hours of daylight and water temperature. But also proved to be successful in other area. So exermining DHC of utilizing unused energy in all parts of Japan is very effective.