Effect of Outdoor Meteorological Parameters on Partial Itemized Cooling and Heating Load of Building

The heating and air conditioning energy consumption account for about 40–60% of the building energy consumption. The research on the relationship between building cooling and heating itemized load and meteorological parameters can further clarify the energy-saving potential of buildings and take concrete measures accordingly. In this paper, a full-year dynamic energy consumption simulation of office buildings was carried out using the typical meteorological year (TMY) generated independently, and the relationship between six meteorological parameters and gain-and-loss of windows and heat gain-and-loss of infiltration is analyzed. The purpose is to seek quantitative relationships between building cooling and heating itemized load and meteorological parameters using principle components analysis (PCA) method. The results show that the synthesis of several related meteorological parameters to represent the outdoor climate conditions has a significant correlation with the heat gain-and-loss of windows and heat gain-and-loss of infiltration, consistent with the analysis of the heat transfer mechanism of building physics. It has been well proven in office buildings, providing a new idea for predicting building energy consumption quickly and accurately.