复合空调系统供冷参数与房间动态响应的研究
Cooling parameters of hybrid air conditioning system and dynamic responses of rooms to parameter change
摘要：
针对采用复合空调系统的办公室进行了CFD仿真，通过极差法和方差分析法得出了送风温度、送风速度、送风相对湿度、冷顶板表面温度及冷顶板占天花板面积比等参数对室内热舒适影响的主次关系，并对最显著的影响因素——送风速度的变化进行了动态模拟，分析了室内工作区和非工作区的温、湿度随时间的变化规律。结果显示，室内热湿状况再次达到稳态所需的响应时间长，不建议采用变风量调节方案；辐射冷顶板表面出现结露的可能性很小。
Abstract：
Conducts CFD simulation on an office with the hybrid air conditioning system of chilled ceiling panel and displacement ventilation, and reveals the influences on indoor thermal comfort of such cooling parameters as the rate, temperature and relative humidity of supply air flow, the surface temperature of chilled ceiling panel and the area ratio of chilled ceiling panel to ceiling by means of range analysis and variance analysis methods. Simulates the dynamic responses of room air to the change in supply air flow rate, which has the largest effect on PMV, and analyses the change of the air temperature and relative humidity in the occupied zone and non-occupied zone with time. The results show that the time that the indoor air reaches steady state again is longer so the VAV control method is not applicable, and that the possibility of dew occurring on the chilled ceiling panel is very less.
Keywords:hybridairconditioningsystem,chilledceilingpanelcooling,displacementventilation,coolingparameter,supplyairflowrate