Q2/ A thermopane window consists of two pieces of glass 7 mm thick that enclose an air space 7mm thick. The window separates room air at 20°C from outside ambient air at -10°C. Theconvection coefficient associated with the inner (room-side) surface is 10 W/m2 K.If the convection coefficient associated with the outer (ambient) air is 80 W/m? K, what isthe heat loss through a window that is 0.8 m long by 0.5 m wide? Neglect radiation,[ kglass 1.4W/m-K: kair -0.024S W/m-K)- Window, 0,8 m x 0.5 mIII L0.007 mGlass LLAir ||!T- 20 °Ch= 10 W/m2 KAirTo-10 °Cho = 80 W/m2.KAir

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Q2/ A thermopane window consists of two pieces of glass 7 mm thick that enclose an air space 7 mm thick. The window separates room air at 20°C from outside ambient air at -10°C. The convection coefficient associated with the inner (room-side) surface is 10 W/m K. Ifthe convection coefficient associated with the outer (ambient) air is 80 W/m? K, what is the heat loss through a window that is 0.8 m long by 0,5 m wide? Neglect radiation,[ kglass 1.4 W/m-K: kair -0.0245 W/m-K] - Window, 0.8 m x 0.5 m Glass Air !! Tmi 20 °C hi= 10 Wim2 K Air1I L=0.007 m To-10 °C ho 80 W/m2-K Air

Q2/ A thermopane window consists of two pieces of glass 7 mm thick that enclose an air space 7 mm thick. The window separates room air at 20°C from outside ambient air at -10°C. The convection coefficient associated with the inner (room-side) surface is 10 W/m K. Ifthe convection coefficient associated with the outer (ambient) air is 80 W/m? K, what is the heat loss through a window that is 0.8 m long by 0,5 m wide? Neglect radiation,[ kglass 1.4 W/m-K: kair -0.0245 W/m-K] - Window, 0.8 m x 0.5 m Glass Air !! Tmi 20 °C hi= 10 Wim2 K Air1I L=0.007 m To-10 °C ho 80 W/m2-K Air

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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