摘要
介绍塑料低温辐射采暖地板的结构和特点,对其稳态传热建立数学模型,用VB编程进行数值计算,对不同的传热情况进行模拟。通过实验进行测试,得出不同工况下的地板表面温度分布。通过与数值解的对比,验证地板采暖数值计算的准确性。用模拟计算的方法分析不同地板内水流速、不同供水温度、不同室温对地板单位面积散热量的影响。结果表明:水流速在0.01～0.03m/s范围内为最佳选择。根据建筑物的采暖负荷,对于"三步节能"居住建筑,供水温度在28～30℃范围内完全可满足建筑物的供热负荷要求。低温辐射地板采暖可与热泵有效地结合起来,提高热泵机组的COP值,达到更好的节能效果。
The structures and characteristics of the PVC （Polyvinylchloride） floor heating plate were introduced. A mathematical model was developed for steady-state heat transfer of the floor. The Visual Basic program was used to carry out numeric calculation. The heat transfer was simulated under different working conditions. Through experi-ment test, the floor surface temperature distribution was obtained. The accuracy of the numerical calculation was verified through the comparison between experimental value and calculation value. The effects of water flow rate in floor temperature difference between supply and return water and room temperature on heat dissipation capacity in the unit area of the floor were analyzed by simulation calculation. The results show that the best range for flow rate is 0. 01-0. 03m/s. According to the heating load of the building, the 28-30℃ supply water can fully meets the demand of the heating load for ＂three-stage be implemented with heat pump to increase energy-saving＂ residential building. the COP of the heat pump unit and Low temperature floor heating can thus save energy.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第4期684-688,共5页
Acta Energiae Solaris Sinica
基金
国家"十一五"科技支撑计划子课题项目(2006BAJ04A15-03)
天津市科学技术委员会应用基础及前沿技术研究计划(09JCZDJC24600)
关键词
塑料低温辐射采暖地板
数值模拟
单位面积散热量
地板表面温度分布
供水温度
PVC floor heating plate
numerical simulation
heat dissipation capacity in the unit area
floor surfacetemperature distribution
supply water temperature
