Title: Evaluation of low-level thermal energy flow in the Osaka prefectural area

Authors: Yoshiyuki Shimoda; Minoru Mizuno; Shigeki Kametani; Takayuki Kanaji

Addresses: Cooperative Research Center for Advanced Science and Technology, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565, Japan ' Department of Environmental Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565, Japan ' Marine Technical College, 12-24 Nishikuracho, Ashiya, Hyogo 659, Japan ' Daiwa House Industry Co. Ltd., Japan

Abstract: 'Low-level thermal energy' means energy used by the residential and commercial sector such as energy for heating, hot water supply and cooling. In this paper, the energy flow in the Osaka prefectural area, from energy supply, through energy consumption into waste heat discharge, is estimated by an integration method. The writers also evaluate the possibility of improving low-level thermal energy flow from the viewpoint of energy consumption and waste heat discharge. From the energy saving standpoint, utilisation of waste heat from the industrial sector is effective. Utilisation of heat source water by transportation networks has a smaller energy saving effect than waste heat. However, it has a large heat island prevention effect in the city centre.

Keywords: thermal energy flow; waste heat; unused heat source; sink water; urban heat islands; waste heat discharge; heat source water networks; Japan; energy supply; energy consumption; energy saving; city centres.

DOI: 10.1504/IJGEI.1998.071443

International Journal of Global Energy Issues, 1998 Vol.11 No.1/2/3/4, pp.178 - 187

Published online: 27 Aug 2015 *

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