Abstract：

Presents the project background of a shopping mall and existing problems in heating seasons. Develops a thermal pressure ventilation model by theoretical analysis, and performs a detailed test for organized ventilation devices. The test results show that there exists large amount of kitchen mechanical air exhaust and a little mechanical outdoor air supply, and most of outdoor air infiltrates by unorganized way. Summarizes the improved heating measures, mainly including blocking off the loopholes in the building envelopes, transforming the exhaust and makeup air control systems, decreasing the supply water temperature from the boiler plant, and adjusting the operation strategies of some equipments. Solves the problem of overlarge vertical temperature difference of the shopping mall by continuous monitoring, which maintains the comfortable indoor temperature, and the heating energy consumption in 2017 was decreased by 58.5 percent compared with that in the early opening period of 2012.