Study on the Effects of Various Relaxation Measures for Outdoor Thermal Environment in the Different Present Urban Blocks Using Coupled Simulation of Convection, Radiation and Conduction

The heat island phenomenon and urban thermal environmental degradation become serious problems in Japan. Although various relaxation measures for thermal environment have been proposed, the effects of them are different according to urban configuration. For proper urban design, it is necessary to understand quantitatively the effects of the measures. Therefore, in this paper, coupled simulation of convection, radiation and conduction was done in Otemachi area, as a high-rise office block, and Kyobashi area, as a middle-rise office block in Tokyo, Japan, to compare the effects of the measures such as heat release point and way of air-conditioning, greening, high albedo of surface, and traffic volume. The result showed that the measures of high albedo material and greening on ground and road are effective in Otemach, and heat release point and way of air-conditioning affect very much in Kyobashi.