A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.30 m × 1.72 m. On a certain day, the ind?
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.30 m × 1.72 m. On a certain day, the indoor temperature is 23°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.)
(a) What is the rate at which energy is transferred by heat through the glass?
W
(b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant?
J
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(a) = 0.8 x 1.3 x 1.72 x (23 - 0) / 0.0062 = 6635.87 W
(b) = 6635.87 x 24 x 3600 = 573.33E6 J
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