A 0.3-cm-thick, 12-cm-high, and 18-cm-long circuit board houses 80 closely spaced logic chips on one side, each dissipating 0.06 W. The board is impregnated with copper fillings and has an effective thermal conductivity of 16 W/m · °C. All the heat generated in the chips is conducted across the circuit board and is dissipated from the back side of the board to the ambient air at 30°C, which is forced to flow over the surface by a fan at a free-stream velocity of 400 m/min. Determine the temperatures on the two sides of the circuit board.

Q: Two cylindrical metal rods-one copper, the other lead-are connected in parallel with a temperature…

A:

Q: Calculate the heat transfer rate (in W) through a 2.65 m2 door with h = 0.21 W(m2•K) The temperature…

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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: Two nested spherical tanks with the internal and outer diameters of the 100 cm by 104 cm and 114 cm…

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Q: Find the center temperature of the cylindrical block after 19.1 min.

A: for cylinder block - h= 5cmd=5cmfor cylinder

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A:

Q: Rock has often been suggested as a medium for the thermal storage of energy. A cylindrical piece of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A hollow tube (inner radius = 40 mm) is heated by a constant surface heat flux of 34 W/m2. A fluid…

A:

Q: In the context of a Spark Ignition (SI) engine, consider a moment during combustion when there is a…

A: Given:Heat flux through the wall of the combustion chamber, The gas temperature within the cylinder,…

Q: A refrigerator door of area 0.6 sq.m consists of 25 mm of insulation on top of a thin metal sheet.…

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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: A camper has a propane-powered refrigerator. The refrigerator consumes approximately 0.50 kg of…

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Q: cylindrical fuel rod (k = 30 W/m•K) of 2 cm in diameter is encased in a concentric tube and cooled…

A: Given data is

Q: determine the rate of flow through the boiler

A: Given data; L1=20×10-3 mk1=58 W/m0cL2=5×10-3mk2=0.116 W/m0cT1=3000CT2=500C Therefore find rate of…

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.