Abstract
To study the relation between the heat load ratio of the external wall and window to the total heat load and the indoor heat comfortability index PMV, putting up the numerical calculation to a radiator heating room. It gains the value of the PMV when the heat load ratio of the external wall and window to the total heat load is separately 0.2 and 0.8, 0.3 and 0.7, 0.4 and 0.6, 0.5 and 0.5, 0.6 and 0.4. And it draws the curve about the PMV and the different heat load ratio of the external wall and window to the total heat load. The curve shows that when the heat load ratio of the external wall and window to the total heat load is 0.4 and 0.6, the indoor heat comfortability index PMV is maximal.
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