Environment comfort in large supermarkets with all-year air conditioning in Shanghai

Finds that indoor temperatures in some large supermarkets in Shanghai are too high in winter and too low in summer, indicating some problems in the design and operation of air conditioning system in such sites with large space and a high occupancy. Puts forward that the design of air conditioning system for such sites should conform to correlative codes and adopt all-air system. Besides, the set value of the room temperature and the outdoor air volume should be auto-controllable all the year round to satisfy comfort, sanitation, energy-saving and economical operation.