ESTABLISHMENT AND VERIFICATION OF NUMERICAL MODEL OF AIR INFILTRATION IN EXTERNAL WINDOW OF HEATING BUILDINGS
The air infiltration of external windows of heating buildings affects building heat consumption and indoor thermal comfort.The conventional external window air tightness field test method is used to obtain data,which has the disadvantages of large workload,low efficiency,large manpower,and material resources.This paper attempts to establish a steady-state numerical model of air infiltration in the outer window,and verifies its accuracy and rational-ity with the measured data.The temperature results from the simulation model is basically consistent with the results from the experimental,in which the point-by-point percentage error PE of the simulated and measured temperature results is in the range of-6.9%to 5.0%.The absolute error between the simulated and measured air permeability re-sults is within 0.2 m3/h,and the relative error is within 5.0%.The verification results may provide data support for the subsequent research on the air tightness of the outer window.
the air infiltration of external windowsbuilding heat consumptionair permeabilitysimulated static pressure boxair tightness
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