热水地面辐射供暖系统热响应特性实验研究
Experimental analysis on thermal response characteristics of radiant floor heating systems
摘要：
通过实验，分别研究了初始运行模式和调控运行模式下供暖地面初始温度、系统供水温度、加热管间距、室外空气温度等参数变化对供暖地表面温度及房间空气温度的影响规律。研究结果表明：持续供暖升温条件下，供暖地表面温度随时间呈指数规律上升；系统初始运行模式下，供暖地面初始温度变化不影响地表面温度的变化规律，但影响其升温时间；系统调控运行模式下，影响系统持续供暖升温时间的关键参数有系统供水温度、加热管间距、辐射供暖地面结构构造及其材料热物性参数；房间空气温度的变化主要受供暖地表面温度水平的影响，受室外空气温度变化的影响较小，围护结构内壁面温度与房间空气温度非常接近。
Abstract：
Carries out some experiments and explores the time response characteristics of floor surface temperature and indoor air temperature influenced by initial floor surface temperature, supply water temperature, tube pitch and outdoor air temperature under initial operation mode and onoff control operation mode. The results show that the floor surface temperature increases exponentially with time of heating. Initial heating surface temperature change does not affect the surface temperature change rule, but affects the heating time under the system initial operation mode. Under the onoff control operation mode, the system heating duration is affected by water temperature, tube pitch and thermal properties of floor construction and materials. Indoor air temperature is changed by floor surface temperature and the effect of outdoor air temperature is relatively small,and building envelope inner surface temperature and indoor air temperature are very close.
Keywords:radiantfloorheatingsystem,onoffcontrolheating,thermalresponsecharacteristic,floorsurfacetemperature,supplywatertemperature,tubepitch,outdoorairtemperature,experimentalstudy