本题目来源于试卷: gc textbook chater 14 heat，类别为 通用国际物理
[问答题]
Heat loss occurs through windows by the follow .se dc07ljje 2b(: 0o euqz,fe0giai)ing processegs6/i t-vxdzzsx7 o 5nb+fi(;s: (1) ventilation around et;-5s/dbnvg siz x7f(x zoi+ 6dges; (2) through the frame, particularly if it is metal; (3) through the glass panes; and (4) radiation. (a) For the first three, what is (are) the mechanism(s): conduction, convection, or radiation? (b) Heavy curtains reduce which of these heat losses? Explain in detail.
参考答案: (a) (1) Ventilation around the edges is cooling by convection. (2) Cooling through the frame is cooling by conduction. (3) Cooling through the glass panes is cooling by conduction and radiation. (b) Heavy curtains can reduce all three heat losses. The curtains will prevent air circulation around the edges of the windows, thus reducing the convection cooling. The curtains are more opaque than the glass, preventing the electromagnetic waves responsible for radiation heat transfer from reaching the glass. And the curtains provide another layer of insulation between the outdoors and the warm interior of the room, lowering the rate of conduction.
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