Effects of trees on room temperature and heat load of detached house

Abstract

The heat load simulation program which can take into consideration the shadow effects caused by trees is developed by the authors. And, the effects on the indoor environments by the trees which cover the afternoon sun was verified. The program added the function in which transmissivity can be set up to the external obstacle. Moreover, the form of the external obstacle was updated so that all polygons could be taken into consideration. Modeling of trees was enabled by those updating. By using a deciduous tree, reducing cooling load, the increase in heating load could be suppressed and annual heating-and-cooling loads were reduced about 3.6%.