Proposal to Refine Solar Radiation of Typical Meteorological Year Database and Evaluation on the Influence of Air-Conditioning Load

The Typical meteorological year (TMY) database is often used to calculate air-conditioning loads, and it directly affects the building energy savings design. Among four kinds of TMY databases in China—including Chinese Year Weather (CTYW), International for Energy Calculations (IWEC), Solar Wind Resource Assessment (SWERA) Standard Data (CSWD)—only CSWD measures solar radiation, most China. However, radiation a measured daily value, its hourly value separated by models. It found that cloud ratio (diffuse divided global radiation) not realistic months May, June July while compared other sets databases. In order obtain more accurate load calculation, this study aims propose method refining Shanghai, China, using observed Perez model which separation high accuracy. addition, impact on has also been discussed paper. shown can yield significant air conditioning load.