建筑围护结构中热桥稳态传热计算研究
Research on steady-state heat transfer calculation of thermal bridge in building envelopes
摘要：
在实验室进行了稳态传热条件下热桥表面温度和热流强度的测试实验，将实验结果分别与二维稳态传热模拟软件PTDA的模拟计算结果及我国现行标准中规定的一维简化方法的计算结果进行了对比。结果表明，PTDA的模拟结果较精确，而现行标准中的简化方法的误差较大，应及时修订。
Abstract：
Tests the surface temperature and heat flow rate per unit area of the thermal bridge in steady-state heat transfer condition in a laboratory. Compares the experimental results with those from the simulation using a two-dimensional steady-state heat transfer software—PTDA（planar temperature distribution and analysis） and the calculation by the one-dimensional simplified method defined in the current design codes of China. The result shows that the simulation results by the PTDA software agree well with the experimental results, and that the calculation results by the simplified method are not sufficiently accurate and the current design codes should be revised in time.
Keywords:envelope, thermal bridge, two-dimensional steady-state heat transfer, experiment, simulation software, one-dimensional simplified method