Experimental Study and Simulation Verification of Influence of Metal Connector on Thermal Performance of Thermal Insulation and Structural Integration System
In order to verify the accuracy and reliability of using the method of simulation calculation to study the influence of metal connectors on the thermal performance of thermal insulation and structural integration wall,the experimental wall is first made according to the protective hot box method stipulated in" Determination and Calibration of Thermal Insulation Steady State Heat Transfer Properties and Protective hot box Method"(GB/T 13475-2021).experimental study is carried out on three,six and nine insulation and structural integration walls with anchored metal connectors on the experimental platform,and the measured heat transfer coefficients of the walls are obtained.Then Airpak computational fluid dynamics software is used to establish the same three groups of models as the experimental study,and set the same hot chamber and cold chamber temperature conditions,respectively,to calculate their heat transfer coefficients.Finally,the measured results are compared with the simulated ones.The results show that the average relative errors of insulation and structural integration wall are 4.92% ,4.69% and 3.96% respectively when the number of anchored metal connectors is 3,6 and 9,and the simulation errors are all within 5% ,which meet the requirements of engineering calculation.
protective hot box methodmetal metal connectorheat transfer coefficientthe relative error
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