Find the heat flow rate through the composite wall as shown: The thermal conductivities are: Material Thermal Conductivity A ABCD с W/(m-K) 150 30 65 50 400°C 10 cm A B с 8 cm D 5 cm 60°C 3 cm 7 cm

Q: The insulation bricks of 0.3 m, and then buildind bricks of 0.2 m were applied to the firebrick of…

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Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: Given  Temperature inside wall T1 = 18 oC Temperature outside of wall T2 =48 oC Conductivity of wall…

Q: 30°C

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Q: The temperature profile at a particular location on the surface of a plate is given by T. – T ту…

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Q: Chemical engineering exercise 2.1  Estimate the heat loss per m² of surface area for a furnace wall,…

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Q: Consider a 0.8-m-high and 1.5-m-wide glass window with a thickness of 8 mm and a thermal…

A: Given, thermal conductivity, k = 0.78 W/m·°C Heat transfer coefficient at inside, hi = 10 W/m2·°C…

Q: 2) Three materials are connected as the following figure. The heat conductivity coefficient of…

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Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: As per our guidelines, we are supposed to answer only 3 sub parts.

Q: 7.) The czpnduction heat transfer rate through a wall is modeled by the following equation: Q = k4AT…

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Q: Estimate the temperature gradient at the surface by convection over a surface of 7.8m2 area if the…

A: The temperature gradient at the surface is to be calculated.

Q: A furnace of 70- by 60- by 90-cm inside dimensions is constructed of a material having a thermal…

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Q: plane wall composed of 2 Determine local conductive resistance r (in m².K/W) of a 90 m² layers in…

A: Given that Thickness of first layer=∆x1=240 mm=0.24 m Thickness of second layer=∆x2=120 mm=0.12 m…

Q: Q1/A steel pipe of outside diameter of (5.1 cm) is insulated with a (0.64 cm) thickness of asbestos…

A: A steel pipe with insulation layers of asbestos and fiber glass are given with following…

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: On the same graph paper show how the heat flow during a DSC analysis and the elastic modulus of a…

A: DSC analysis is differential scanning calorimetry analysis. It is used to measure the effect of heat…

Q: A steam pipe having inside diameter 155mm, thickness 7mm is covered with 2 layers of insulation of…

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Q: Calculate the natural convection heat transfer coefficient for a vertical stainless pipe, 100 mm…

A: Given, Diameter of pipe, D = 100 mm×1 m1000 mm    = 0.10 m temperature on outside surface of pipe,…

Q: A steam pipe 8.9 cm o.d. is insulated with a 5.1 cm thickness of magnesia coated with 1.27 cm…

A: Given data: Outer diameter of pipe = 8.9 cm Thickness of magnesia layer = 5.1 cm Thickness of…

Q: Calculate the overall heat transfer coefficient of the steel pipe based on the inner surface. The…

A: Given: inner diameter of the pipe = 10.16 cm the thickness of the pipe = 2 cm The convection heat…

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

A: Heat transfer is described by Fourier's law of conduction. The law states that the heat flux is…

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: GIVEN THAT  INSIDE TEMPERATURE T1 = 18oC Out side temperature T2 = 48oC Heat trasfer area A = 2×3…

Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface…

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Q: Air at 20°C blows over a 50 x 75 cm hot plate made of carbon steel (AISI 1010) with 2 cm thickness.…

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Q: Temperature difference is not the driving force for heat transfer. O yes O No

A: heat transfer is the change in thermal energy by difference in temperature of two body let say…

Q: A large slab of aluminum at a uniform temperature of 30◦C is suddenly exposed to a constant surface…

A: Uniform Temperature = 30 °CConstant Surface Heat Flux = 15 kWm2 Depth=2.5cm Time=2 min

Q: A plain piece of insulation board is used to reduce the heat loss from a hot furnace wall into the…

A: The thickness of the board is to be calculated.

Q: 6.32- Consider a wall-mounted power transistor that dissipates 0.18W of power in an environment at…

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Q: A hot surface at 150°C is to be cooled by attaching 4-cm-long. 0.3– cm-diameter aluminum pin fins (k…

A: Given:Temperature of surface=1500C=423 KArea=4 m2Surrounding temperature=250C=298 KHeat transfer…

Q: A new concrete driveway has been cured and is subsequently being cooled by spraying 20C water on the…

A: Thermal diffusivity: In heat transfer, thermal diffusivity is defined as the thermal conductivity…

Q: For the above left surface of the copper plate (k = 400 W/m C) the surface absorbs heat flux from…

A: Here copper plate is kept in air for heat transfer. It is given that left surface of the copper…

Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface…

A: Outer surface temperature of the horizontal pipe, TS = 120°C =393 K Ambient air temperature, TA =…

Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface…

A: For heat transfer from a horizontal pipe by convection process, the correlation given by Churchill…