Problem 2: Consider a 1-m-high and 2-m-wide double pane window consisting of a 3-mm-thick layers of glass (k=0.78 W/m-K) separated by a 10-mm-wide stagnant air space (k=0.026 W/m-K). Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner surface for a day during whích the room is maintained at 20°C while the temperature of the outdoors is 0°C. Take the convection heat transfer coefficients on the inner and the outer surfaces of the window to be hn 20 W/m?-K and ho 30 W/m-K. (Ans: 81.3 W, 18 C).

Problem 2: Consider a 1-m-high and 2-m-wide double pane window consisting of a 3-mm-thick layers of glass (k=0.78 W/m-K) separated by a 10-mm-wide stagnant air space (k=0.026 W/m-K). Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner surface for a day during whích the room is maintained at 20°C while the temperature of the outdoors is 0°C. Take the convection heat transfer coefficients on the inner and the outer surfaces of the window to be hn 20 W/m?-K and ho 30 W/m-K. (Ans: 81.3 W, 18 C).

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 1.48P: A horizontal, 3-mm-thick flat-copper plate, 1-m long and 0.5-m wide, is exposed in air at 27C to...

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