A thermopane window consists two glass panes, each 0.50 cm thick, with a 1,0-cm-

Question

A thermopane window consists two glass panes, each 0.50 cm thick, with a 1,0-cm-think sealed layer of air in between. (Use 0.8J/s . M degree C for the thermal conductivity of glass and 0.0234 J/s . S. m degree C for the thermal conductivity of air answer the following). If the inside surface temperature is 22.9 degree C and the outside surface temperature is 0. 0 degree C, determine the rate of transfer through 1.60 m2 of the window. Compare your answer to with rate of energy transfer through 1.60 m2 of a single 1,0-cm-thick of glass. Disregard surface air layers. W

Explanation / Answer

a) .00857 J/s b) rate = .29312 j/s comparion => 34.203 times

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