严寒地区太阳能地板辐射供暖系统实验研究

Experimental Research of Solar Radiant Floor Heating System in Cold Area

乌鲁木齐地区位于中国严寒气候区,冬季采暖期长达6个月,但该地区太阳能资源较为丰富,高达5.4×10^9~6.2×10^9 J/m2·a,为太阳能热利用提供了有利条件。在太阳能日辐射强度利用价值高的时段,如何选择与当地气候条件相适应的集热元器件并构筑高集热效率的太阳能热水系统,将直接影响太阳能热利用技术的效果。本研究旨在结合乌鲁木齐冬季供暖的实际情况构筑太阳能地板辐射供暖系统,采用实验方法对太阳能地板辐射供暖系统的性能进行分析,重点分析乌鲁木齐地区冬季供暖期,室外气象条件（太阳辐射强度、室外干球温度、风速等参数）、集热器进出水温度、室内供回水温度等参数的变化规律,得出太阳能地板辐射供暖系统在冬季的运行控制方式,研究结果为乌鲁木齐地区太阳能地板辐射供暖系统的应用提供了基础参考数据。

Urumqi is located in China cold climate zone with the winter heating period of six months, but the local solar energy resources is relatively abundant, ranged from 5.4×10^9 to 6.2×10^9 J/m^2·a, which provides favorable conditions for solar energy heat utilization. The selction of solar collector and the construction of solar heating system with various local climatic conditions directly influence the effect of solar heat utilization technology. A solar radiant floor heating system is built in Xinjiang University in Urumqi, the performance of the solar radiant floor heating system is analyzed experimentally. The variation of collector’s inlet and outlet water temperature, indoor water supply and return temperature and other parameters with different outdoor meteorological conditions （solar radiation inten -sity, outdoor dry bulb temperature, wind speed and other parameters） are analyzed in details. The operation control method of the solar radiant floor heating system in winter is obtained. The research results provide basic reference data for the application of solar radiant floor heating system in Urumqi.