Test calculation method of window gap size
A calculation method and window technology, which is applied in the field of building environment and energy saving, can solve the problems of difficult measurement of window gaps and the size of window gaps, and achieve the effect of making up for inaccurate measurement and facilitating measurement
Active Publication Date: 2019-12-10
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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[0003] The invention aims at the problem that the size of the window gap is difficult to be measured in actual engineering, and proposes a test and calculation method for the size of the window gap to solve the problem of difficult measurement of the window gap
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[0016] Since there is a certain relationship between the size of the window gap and the infiltration air volume passing through the window gap and the pressure difference on both sides of the window, the relationship between the gap height h, the infiltration air volume Q passing through the window gap and the pressure difference Δp on both sides of the window is obtained by simplifying the calculation. Calculate and express the relational expression about the window gap height h, then measure the infiltration air volume Q passing through the window gap, the pressure difference Δp on both sides of the window, the length L and the depth Z of the window gap, and substitute them into the expression of the window gap height, Find the gap height h of the window.
[0017] Firstly, calculate the infiltration air volume Q through the window gap by the tracer gas concentration decay method or the tracer gas constant concentration method; then, use the atmospheric pressure sensor to meas...
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The invention relates to a test calculating method for window gap sizes. According to a certain relation existing between a window gap size and infiltration air quantity passing through a window gap and the differential pressure of the two sides of a window, the relational expression of gap height h and the infiltration air quantity Q passing through the window gap and the differential pressure [delta]p of the two sides of the window can be calculated by a simplified solution manner, so that the calculation expression relation of the window gap height h can be obtained; and the gap height h ofthe window can be calculated by plugging the separately measured the infiltration air quantity Q of the window gap, the differential pressure [delta]p of the two sides of the window and the length Land the depth Z of the window gap into the expression of the window gap height.
Description
technical field [0001] The invention relates to the field of building environment and energy saving, in particular to a method for testing and calculating the window gap size. Background technique [0002] In today's society, buildings consume more and more energy, and energy-saving tests are on the rise. Measuring the height of window gaps is one of the contents. It is difficult to measure the height of gaps in practical applications. The gap effective area coefficient Ce and related formulas can be indirectly calculated to obtain the height of the window gap. However, there is no relevant manual on the calculation of window gap height in my country, and the quality of window processing varies widely. Using the data in foreign manuals will bring large errors. Contents of the invention [0003] The invention aims at the problem that the size of the window gap is difficult to be measured in actual engineering, and proposes a test and calculation method for the size of the ...
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IPC IPC(8): G01B5/02G01B5/18G01B13/06
CPCG01B5/02G01B5/18G01B13/065
Inventor 杨伟浩于志强邹志军刘悦
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH