19.12 A certain double-pane window consists of two glass sheets, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30-cm stagnant air space. The indoor surface temperature is 20 °C, while the outdoor surface temperature is exactly 0°C. How much heat passes through the window each second? kr = 0.84 W/K 1 Im for glass and about 0.080 W/K m for air. Ans. 69 cal/s
19.12 A certain double-pane window consists of two glass sheets, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30-cm stagnant air space. The indoor surface temperature is 20 °C, while the outdoor surface temperature is exactly 0°C. How much heat passes through the window each second? kr = 0.84 W/K 1 Im for glass and about 0.080 W/K m for air. Ans. 69 cal/s
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19.12 PROVIDE m THE GIVEN, REQUIRED EQUATION / FORMULA USED AND SOLUTION
DONT USE PENCIL OR BALLPEN, I CANT SEE
Transcribed Image Text:19.12 A certain double-pane window
consists of two glass sheets, each
80 cm x 80 cm x 0.30 cm,
separated by a 0.30-cm stagnant
air space. The indoor surface
temperature is 20 °C, while the
outdoor surface temperature is
exactly 0°C. How much heat passes
through the window each second?
kr = 0.84 W/K 1 Im for glass and
about 0.080 W/K m for air.
Ans. 69 cal/s
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