Application of Projection Pursuit Model (PP) in Evaluation of Thermal Comfort Based on GA

For the evaluation of indoor thermal comfort, the assessment for main factors, such as air temperature, velocity, relative humidity and mean radiation temperature, are independent and incompatible. In this paper, PPE model was established for thermal comfort evaluation, and also GA was selected to optimize the projection direction. Therefore multi-dimension data could be changed into low dimension space. This model can give a comprehensive assessment projection index based on the indexes of the four main factors of thermal comfort. The validation results from the case study indicated that the method presented in this paper was reasonable, and the weight coefficient could be determined more objectively. It could be concluded that a new thought was provided for indoor thermal comfort.