NUMERICAL SIMULATION OF AIR-TEMPERATURE AT OFFICE BUILDING DISTRICT WITH INTERACTION MODEL BETWEEN URBAN HEAT-ISLAND AND BUILDING ENERGY-CONSUMPTION

Abstract

We investigated air-temperature diurnal variations within urban canopy layer, using a coupled model between the urban meteorology and building energy consumption. The main results obtained are as follows. The coupled model reproduces temperature fields during weekdays when a waste heat exists due to energy consumption and cooling needs in buildings, as well as during weekend. The waste heat causes a temperature rising of 1-2°C during the weekdays at the Tokyo office area. However, the temperature rising strongly depends on weatherconditions (e.g., solar radiation and wind speed); the temperature rising is small when the solar radiation fluxand wind speed increase.