封闭空间蓄热体对室内空气温湿度调节性能-《华侨大学学报（自然科学版）》

文章信息/Info

Title:: Performance of Thermal Accumulator within Closed Space in Regulating Temperature and Relative Humidity of Indoor Air

Author(s):: Ran Maoyu; Dept. of Arch., Huaqiao Univ., 362021, Quanzhou, China

Keywords:: thermal accumulator; regulation of air temperature; regulation of relative humidity; lumped parameter method

摘要:: 在定性说明室内蓄热体对空气温湿度有自动调节性能的基础上,提出用“实房间”空气温度波幅与“空房间”空气温度波幅之比作为衡量蓄热体对室内空气温度调节性能的指标 .同时,进一步用集总参数法,分析各种因素对这一调节性能的影响 .结果表明,蓄热体对室内温度的调节特性与蓄热体热容量与室内空气热容量之比值Xk=VkρkckVaρaca,以及与蓄热体时间常数与波动周期之比值Yk=VkρkckωαFk均有关 .最后,推导出便于工程上适用的计算式

Abstract:: Starting from a qualitative explanation of the performance of an indoor heat accumulator in automatically regulating temperature and humidity of indoor air, the author suggests to use the ratio between amptituds of air temperature swings in “realistic room” and that in “empty room” as the norm for judging the performance of heat accumulator in regulating temperature of indoor air. By further using lumped parameter method to analyse the influence of various factors on this regulating performance in detail, the author points out that two dimensionless criteria have bearing on the characteristics of heat the accumulator in regulating indoor air temperature. One criterion is the ratio X k=V kρ kc k/V aρ ac a, namely, the ratio between the heat capacity of thermal accumulator and that of indoor air; anothar criterion is the ratio Y k=V kρ kc kω/αF k, namely, the ratio between time constant and wave period of the thermal accumulator. A simple formala suitable for engineering calculation is derived finally.