DEVELOPMENT OF COMPREHENSIVE ASSESSMENT SYSTEM ON HEAT ISLAND RELAXATION : Framework and outline of assessment system(Environmental Engineering)

Abstract

A new assessment system named CASBEE-HI (Comprehensive Assessment System for Building Environmental Efficiency on Heat Island Relaxation) has been developed for evaluating the effects of various countermeasures related to building design on heat island relaxation. In CASBEE-HI, environmental efficiency concerning the heat island relaxation (BEE_<HI>) is defined as Q_<HI>/L_<HI>, where Q_<HI> is the quality of outdoor thermal environment within a building site and L_<HI> is the loadings emitted from this building site to increase the heat island effects in its surroundings. A numerous number of numerical analyses were carried out to determine the weighting coefficients included in the assessment sheets for the evaluation of BEE_<HI>, according to the degree of relative effectiveness of each countermeasure. Case studies using the developed assessment system were conducted for many buildings and the applicability of CASBEE-HI has been examined.