Research on steady-state heat transfer calculation of thermal bridge in building envelopes

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.