周期性变化内热源条件下建筑蓄热对室温延迟的影响

将室内热源（包括人体、照明、设备散热及透过窗户的日射得热）强度处理为按正弦规律变化的周期函数,研究了周期性变化内热源条件下建筑的时间常数、无量纲对流换热系数、傅里叶时间常数、室内热源引起的室内温度增值变化幅度、室外温度波动幅度对室温延迟的影响规律,并给出了预测室温延迟时间的数值解。

Effect of External Thermal Mass on Indoor Temperature Considering Periodic Internal Heat Source

The total heat source in the building was considered as a semi-periodic one,including heat gain from people ,lighting, other heat-generating equipment and the direct solar gain. It was found that both the phase shifting of indoor air temperature were determined by the time constant of the system, two dimensionless surface convective heat transfer numbers, the Fourier time constant, the fluctuating amplitudes of the indoor air temperature rise due to internal heat gain and the outdoor air temperature considering a periodic internal heat source. Some numerical solutions for predicting phase shift of indoor air temperature were also presented.