A square plate heate(10cm*10cm) is inserted between two slabs having same cross sectional areas.the left slab is 100 mm thick(K=50w/mK) and the right slab is 50mm thick (k=0.25 w/mK).The heat transfer coefficients for left and right slab outer surfaces are 250 w/m^2k and 50w/m^2k respectively. The ambient air temperature is 25 degree celsius .if the rating of the heater is 1 kW;determine :  a) temperature at the heater surfaces and outer surface temperatures  of each slab.

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Q: A perfectly insulated aluminium bar (k = 297 W/m K) of diameter 20 cm and length 0.1 m connects a…

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Q: Q2: A hot surface at 150°C is to be cooled by attaching 4- cm-long, 0.3-cm-diameter aluminum pin…

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Q: A thin, flat electric heater is exposed to air on both sides. On the top is a heat transfer…

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Q: The wall of a 5 m high cylinderical steel tank (ks= 20 W/mK) of inner diameter 1.5 m and 200 mm…

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Q: n internal engine of a rocket (180°C furnace) generates heat flow of 23.2564 kW through a first…

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Q: Exercise: Consider a circumferential aluminum fin (k = 220 W/m.°C) having a thickness of 0.1 mm to…

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Q: and k =43 W/m-K, respectively. The time required for the rod to reach 300 °C is seconds.

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Q: Consider a large plane wall of thickness L = 0.2 m, thermal conductivity k = 1.2 W/mK, and surface…

A: Given: L=0.2 mk=1.2 W/mKA=15 m2heat generation qg=500 W/m3at x=0, T=60oCTa=20oCh=200 W/m2K To find:…

Q: Determine the rate of heat transfer and the overall heat transfer coefficient for the composite wall…

A:

Q: Determine the rate of heat transfer and the overall heat transfer coefficient for the composite wall…

A: Given Data The initial temperature is:T∞1=100°C The initial heat transfer coefficient is:h1=6…

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.