典型低温散热器性能实验和案例分析

Typical low temperature radiator performance experiment and case analysis

为提高供暖系统能效和节约能源,采用低温供暖系统扩大新能源和可再生能源供热比例是目前重要的发展方向。首先通过散热器标准实验对铜铝复合低温散热器、铝制低温散热器和铜管强制低温散热器这3种低温散热器的散热性能进行了分析,结果表明:3种散热器低温工况拟合曲线与高温工况拟合曲线具有共线性,可以使用高温工况拟合曲线进行低温工况散热量计算。以北京某办公楼为建筑原型,进行低温散热器选型分析,结果表明低温工况下,强制对流散热器散热性能最好,且占地面积与铜铝复合散热器、铝制散热器在高温工况下的占地面积相近,适宜于在示例建筑中应用。所得研究结果为低温供散热器的实际应用提供了理论基础和实验数据。

In order to improve the energy efficiency of the heating system and save energy, low-temperature heating systems are widely used to expand the proportion of new energy and renewable energy heating. The heat dissipation performance of three types of low-temperature radiators including copper-aluminum composite low-temperature radiators, aluminum low-temperature radiators and copper tube forced low-temperature radiators was analyzed through radiator standard experiments. The fitting curve of the low temperature working condition was collinear with the high temperature working condition. Moreover, the fitting curve of the high temperature working condition can be used to calculate the heat dissipation of the low temperature working condition. Taking an office building in Beijing as a prototype, a lowtemperature radiator selection analysis was carried out. The results show that the forced convection radiator has the best heat dissipation performance under low-temperature conditions. The area covered by the forced convection radiator under low temperature condition is similar with copper-aluminum composite radiator and aluminum radiator under high temperature condition. It means the forced convection radiator under low temperature condition is suitable for low-temperature heating systems. The results obtained provide theoretical basis and experimental data for the practical application of lowtemperature radiators.