19.12 A certain double-pane window consists of two glass sheets, each 80 cт х 80 ст х 0.30 ст, 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 cт х 80 ст х 0.30 ст, 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

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.68P

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