Thick slabs of stainless steel (k = 14.9 W/m·K and α = 3.95 × 10−6 m2/s) and copper (k = 401 W/m·K and α = 117 × 10−6 m2/s) are subjected to uniform heat flux of 8500 W/m2 at the surface. The two slabs have a uniform initial temperature of 20°C. Determine the temperatures of both slabs, at 0.01 m from the surface, after 60 s of exposure to the heat flux. The temperature of the stainless steel slab is The temperature of the copper slab is

Q: Two metal rods are being heated in an oven with uniformambient temperature of 1000°C and convection…

A: Given Data: Ambient temperature is: T∞=1000 °C Convective heat transfer coefficient is: h=25 W/m2 K…

Q: The window of a room is made of 5 mm thick glass which has a thermal conductivity of 1.4 W/m-K. A…

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Q: Required information The upper surface of a 85-cm-thick solid plate (k= 237 W/m-K) is being cooled…

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Q: 2. Compare the heat loss from insulated and uninsulated copper pipe (k-400 W/m K) under the…

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Q: An aluminum plate of 25 mm thick (k = 235 W/m·K) is attached on a copper plate with thickness of 10…

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A: Giventhe thermal diffusivity the thermal conductivity of the plasticthickness of the sheet…

Q: The 8-mm-thick bottom of a 220-mm-diameter pan may be made from aluminum (k = 240 W/m · K) or copper…

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Q: The 5-mm-thick bottom of a 200-mm-diameter pan may be made from aluminum (k= 240 W/m·K) or copper…

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Q: A 15 mm diameter cylindrical nuclear fuel rod is housed in a hollow ceramic cylinder concentric to…

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A: Given:To find:Temperature distribution and rate of heat gain per unit length.

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A: For the same heat transfer rate  & area we get :

Q: The temperature of the outer surface of the walls at 11.5 h is

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Q: In an annealing process, a 50-mm-thick stainless steel plate (ρ = 8238 kg/m3, cp = 468 J/kg⋅K, k =…

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Q: The wall of a furnace consists of 200 mm thick refractory brick (k = 3 Btu / hr-ft2-0F), 100 mm…

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Q: A 10-in-thick, 26-ft-long, and 10-ft-high wall is to be constructed using 9-in-long solid bricks (k=…

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Q: The walls of a food storage facility are made of a 2-cm-thick layer of wood (k =0.1 W/m-K) in…

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Q: The wall of a refrigerator is constructed of fiberglassinsulation (k = 0.035 W/m·K) sandwiched…

A: A diagram related to this problem is given as, From above diagram, the heat transfer per unit area…

Q: Show that the plate is lumped, and then find the time required for the plate to achieve a…

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Q: An electrical heater 114 mm long and 7 mm in diameter is inserted into a hole drilled normal to the…

A: GIVEN DATA-

Q: A wood log (k = 0.17 W/m · K and a = 1.28 × 10-7 m²/s) is 7.5 cm in diameter and is initially at a…

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Q: fer coefficient

A: Given   Radius, r1 = 7.5 mm                r2 = 17.5 mm                r3 = 55 mm The Heat transfer…

Q: Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls…

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Q: Two large stainless steel plates at temperatures of 90°C and 70°C are separated by a stainless steel…

A: The diameter of the pipe is d=2.5 cm. The length of the pipe is L=0.3 m The thermal conductivity of…

Q: An electrical heater 100 mm long and 5 mm in diameter is inserted into a hole drilled normal to the…

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Q: Two 0.69-m-diameter, 15-cm-long aluminum bars (k= 176 W/m-K) with ground surfaces are pressed…

A:

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.