A current of 250 amp is passing through stainless steel were having a diameter of 5.08 mm. the wire is 2.448 m long and have a resistance of 0.0843 Ω . The outer surface held is constant at 426.7 K. The thermal conductivity is k = 22.5 W/m k. Calculate the centerline temperature at steady state.

Q: 1-85 A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board.…

A: given = H = 0.4 cm d = 0.6 cm avg heat transfer coefficient = 30 W/m2K air temp Tair = 55^c…

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A: Given data: Diameter of tube=3cm Thickness=2mm Length of fin=20mm Tube wall temperature=250oC…

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A: Given: Hot fluid: Th = 60 oC mh = 0.045 kg/s hf = 2366 kJ/kg Cold Fluid: Tc1 = 20 oC mc = 6 kg/s…

Q: (b) An electric kettle with a 3kW heater element is used to boil water. The kettle has a stainless…

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Q: Given: Fin width: 90 mm Fin length: 45 mm Fin thickness: 5 mm Thermal conductivity of fin material:…

A: The heat transfer through a rectangular fin is given as follows: qfin = hPkA(To-T∞)×tanh (mL)…

Q: Straight metal fins (k = 45 W/m °C) of triangular profile installed on a 1 m × 1 m wall The wall is…

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A: Note: We are authorized to answer one question at a time, since you have not mentioned which…

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Q: 3. An array of 10 silicon chips, each of length L = 10 mm on a side, is insulated on one surface and…

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Q: Heat transfer rate described by Fourier's law decrease, if the........... Increases a. Thermal…

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Q: . 15.7 Plate glass, k = 1.35 W/m K, initially at 850 K, is cooled by blowing air past both surfaces…

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Q: Kerosene is heated by hot water in a shell and tube heat exchanger. The kerosene is inside the tubes…

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Q: A standard 1-in schedule 40 steel pipe carries saturated steam at 250oF. The pipe is insulated with…

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Q: Given: Fin length: 45 mm Fin width: 90 mm Fin thickness: 5 mm Thermal conductivity of fin material:…

A: Given: Fin length: 45 mm Fin width: 90 mm Fin thickness: 5 mm Thermal conductivity of fin material:…

Q: Q3) A 2-kW resistance heater wire with thermal conductivity of k 20 W/m - °C, a diameter of D = 5…

A: Given that- Resistance heater wire has total heat generation, Q=2 kW= 2000 W Thermal conductivity,…

Q: Problem 2: A square silicon chip (k-150W/m.k) is of width W-5mm on a side and of thickness t-1mm.…

A: Given, K=150 W/m.K, t=1 mm=10-3 m W=5mm=5×10-3m Q=4 W Area of square chip=W2=(5×10-3)2=25×10-6m2…

Q: Q3:Soild wire 4 mm dia, k= 120 W/mK and 2m lenght, is subjected to 20 Amp current and 220 volt. Heat…

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Q: 1. A 2-in. Sch. 10 pipe (Steel Type 321) is maintained at an inside temperature of 520 K for a heat…

A: A 2 inch schedule 10  pipe  Inside temperature = 520 K  thickness of fireclay insulation layer (x2)…

Q: A gas nside a 25in steel pipe. kness covers the steel pipe. The convective heat-transfer coefficient…

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Q: The heat-transfer rate through the walls and roof of the house is 0.72 kW for each kelvin of…

A: Temperature inside the house Tin = 25oC = 298 K Work done by Heat pump W = 1.9 KW The heat-transfer…

Q: Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 250 ° C. The…

A: Given data: Dimension of plate=50cmx40cm Thickness of plate=3cm Convective heat transfer coefficient…

Q: Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 200 ° C. The…

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Q: A tubular shell/tube exchanger is operated with the following conditions: ** neglect viscosity…

A: given = Q = 200000 lb/hr N = 1196 tubes n = 6 Di = 0.62 inches = 0.051 fr internal corss section…

Q: A plane wall has a thermal conductivity of 20 W/(m-K) and generates heat at 0.5 MW/m3. The wall is…

A: Given, Outside temperature, T∞ = 100 °C Thickness of the slab, L = 0.2 m Heat transfer coefficient,…

Q: heat transfer  Adjacent vertical quadrilaterals arranged as in the figure below are black bodies.…

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