西安某商场冬季室内热分层与空调热负荷研究
Indoor thermal stratification and heating load of air conditioning system in a shopping mall of Xi’an in winter
摘要：
对西安市某商场内的温度、灯光照度、人流量等参数进行了实测，利用EnergyPlus软件对商场冬季热负荷进行了模拟计算。结果显示，商场内温度上高下低的分层现象明显，烟囱效应严重。得到各层的冬季热负荷迁移系数，可用该系数对空调负荷理论计算值进行修正，确定各层的实际负荷。建议采用单设的引流通风系统、采用变风量空调系统及分季节采用不同排数换热器等调节方法，减少烟囱效应造成的温度上下分布不均匀现象。
Abstract：
Measures the temperature, light intensity and passenger flow in a shopping mall of Xi’an. Simulates and calculates the winter heating load of the shopping mall with the EnergyPlus software. The results show that the thermal stratification of upper-high and lower-low is obvious, and the chimney effect is serious. Obtains the transfer coefficient of winter heating load of each floor, which could be used to correct the theoretic heating load and determine the actual heating load of each floor. Suggests the control methods of individual inducted ventilation system, variable air volume air conditioning system and heat exchangers with different row number in different seasons, so as to mitigate the temperature stratification caused by chimney effect.
Keywords:thermal stratification, air conditioning, heating load, load transfer coefficient, chimney effect, shopping mall