Studying character of dynamic cooling/heating load in Chinese department stores is the central task in this article. Firstly, an analysis model of dynamic load of stores is established on the basis of a hexahedral construction model and restriction of nine basic factors. And then, simulation plan and calculation of dynamic load are confirmed according to the theory of orthogonal test design.
It is mostly discussed that rule of load rate distribution in this article. After preliminary calculation, variance analysis method in orthogonal test is adopted to sift the factors that notably influence load rate distribution. Afterwards, considered nothing but significance factors, official test is designed. It is gained that load rate probability density function and distribution function of stores in eight typical cities of China. Finally, time weighting average of refrigerating coefficient of performance (TCOP) is puts forward. As an example, the selection and evaluation of the water chiller for a department store in Shanghai is carried out.