Analysis on ventilation demand and air conditioning ventilation system of public buildings in transition season

Based on the design data investigation and calculation analysis of the actual project, compares and analyses the difference between the outdoor air volume of air conditioning system and the ventilation volume in transition season, and finds that the existing public buildings generally have the problem of insufficient outdoor air ventilation in transition season, which is difficult to eliminate the indoor residual heat. The research results show that: for the semi-centralized air conditioning system in public buildings, the current system is difficult to meet the demand of all-outdoor-air operation in transition season; for the centralized air conditioning system, under the consideration of selecting appropriate indoor design temperature and fan strategy, the existing system can meet the demand of all-outdoor-air operation in transition season.