Effect of Mass Introduction of PV Systems to Heat-Island Phenomena on Mega City

Research Project , Research Report 2002

Hiroshi KOMIYAMA Dept. of Chemical System Engineering, the Univ. of Tokyo
Keisuke HANAKI Dept. of Urban Engineering, the Univ. of Tokyo
Kenji YAMAJI Dept. of Electrical Engineering, the Univ. of Tokyo
Yukio YANAGISAWA Graduate School of Frontier Sciences, the Univ. of Tokyo
Hiroshi TAKAHASHI Dept. of Chemical Engineering, the Univ. of Tokyo
Noboru HARATA Graduate School of Frontier Sciences, the Univ. of Tokyo
Toshiharu IKAGA Keio Univ.
Koichi YAMADA Shinshu Univ.
Tomonori MATSUO Toyo Univ.
Nobuyuki TAMAI Kanazawa Univ.
Hisashi ISHITANI Keio Univ.

Abstract

Photovoltaic (PV) cells are considered as one of countermeasures for saving electricity generated by fossil fuels. When PV cells are largely introduced in Tokyo, the surface heat valance will be changed. We developed a new PV cell surface heat balance model so as to as to asses all the impacts of introduction of PV cells, like a change of energy consumption resulting from a change of air temperature and a change of cooling loads in buildings resulting from the shielding effect of PV cells. We set PV cells on the top of the roof of a research institute building in Tsukuba, Japan, and measured PV cell surface heat valance and meteorological data. From these measured data, we determined our model’s parameter.

Keywords:

City heat valance, Heat island phenomenon, Photovoltaic cell