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为了评价低温电地板辐射供暖系统的热力性能,设计并构建了一个由恒温小室和不同结构地板组成的实验装置.发热电缆均匀分布在地板层内,额定发热功率为30W/m.由3种不同复合地板结构和8种不同的导线间距组合成24种实验方案,分别进行测试,其中导线间距分别为30,40,50,60,80,100,130,150mm.分析了影响电地板辐射供暖系统热力性能的主要因素及其影响规律.实验结果表明,该系统具有良好的稳定性和可靠性,地板供暖辐射换热量约占总换热量的50%以上.当地板结构相同且感温探头所处位置不变时,存在一个使地板上表面散热量最大的最佳导线间距,实验工况下的最佳导线间距为50mm.
In order to evaluate the thermal performance of the low-temperature radiant floor heating system, an experiment device consisting of a constant temperature chamber and different structural floors is designed and constructed.The heating cables are evenly distributed in the floor and the rated heating power is 30W / m. Composite floor structure and eight different wire spacing combined into 24 kinds of experimental programs were tested, respectively, with the wire spacing were 30,40,50,60,80,100,130,150mm.The main factors affecting the thermal performance of electric radiant floor heating system And its influence law.The experimental results show that the system has good stability and reliability, the floor heating radiation heat transfer accounts for about 50% of the total heat exchange.When the floor structure is the same and the temperature probe position , There is an optimum conductor spacing that maximizes the amount of heat dissipated on the upper surface of the floor. The optimum conductor spacing for the experimental conditions is 50 mm.