Question 4 The window of a room is made of 5 mm thick glass which has a thermal conductivity of 1.4 W/m-K. A heater is used to maintain the room temperature at 22 °C. Take the convection heat transfer coefficients on the outer surface of the window to be 12 W/m²-K. Take appropriate assumptions while solving this problem. (a) T₂=15°C TA I L=0.005m * -A- 1m x 3m 3m², k=1.4W/m-K Figure Q2 T₂=5°C Determine the heater thermal load to maintain the room temperature?

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Q: Q1 The inner and outer surfaces a spherical shell with radii of 1 cm and 2 cm are 300°C and 100°C,…

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Q: Q: A large plane wall of thickness (L= 0.3 m), thermal conductivity ( k = 40 W/m-°C), and surface…

A: Given, L = 0.3 mk = 40 W/m °CA = 0.4 m2T(0) = 70 °Cq' = 1200kk + 20L=1200 (40)40 + 20 (0.3)=1043.48…

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Q: A cold-storage room is constructed of an inner layer of 11 mm of pine with thermal conductivity of…

A: Given:- Length of pine(thickness) Lp=11mm=0.011m Length of concrete(thickness) Lc = 75mm=0.075m…

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.