Abstract
A simulation system was developed to estimate the thermal effects of an environmental symbiosis plan quantitatively. This system employed the sensible temperature of outdoor human body and the energy consumption in urban block buildings for its indexes in estimation. Radiation heat balance, the heat transfer of building wall and the cooling energy of building's interior were coupled in this system.
The relationship between the outdoor thermal environment and the energy consumption for air conditioning was examined by case studies. One case study showed that street trees improved the thermal environment. However in another case study where the absorption ratio of short waves by the external wall is decreased, a conflicting relationship was found quantitatively between the two indexes. Namely the energy consumption for air conditioning decreased while the outdoor thermal index increased.
