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Heat Transfer

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Determine Capacity ratio, NTU and effectiveness if the overall heat transfer coefficient is $300 W/m^2K4.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Derive an expression for shape factor in the following cases
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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One side of metallic plate absorbs a heat flux of 1000 $\frac{W}{m^2}$. Its other side is insulated.The emissivity of surface is 0.8 and convective heat transfer coefficient is 20 $\frac{W}{m^2K}$
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Find the duct wall temperature.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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10mm OD pipe carries a cryogenic fluid at 80K.This pipe is encased by another pipe of 15mm OD and the space between them is evacuated.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Determine heat lost by radiation per meter length of 80 mm diameter pipe at 300deg C, if
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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What is radiation shield?
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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The net radiation from the surfaces of two parallel plates maintained at temperature T1 and T2 is to be reduced by 79 times.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Show that the radiant heat transfer between two infinitely large parallel plates seprated by n shield is
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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A filament of 75 W Light bulb may be considered as black body radiating into a black enclosure of 70deg C
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Prove that total emissive power of black surface is $\pi$ times the intensity of radiation.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Distinguish between specular and diffuse radiation.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Define: Radiosity and Irradiation.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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What is the mode of heat transfer in vacuum? Define absorptivity, reflectivity and transmissivity.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Define the natural convection and state few practical examples of it.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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What is thermal Boundary Layer? Illustrate the same with the help of a neat diagram.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Write a short note on: Heat pipe.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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With the help of Buckingham $\pi$-theorem show that for a forced convection
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Air at 200 degC and at velocity of 2 m/s over a plate maintained at 1000degC. The length and width of the plate are 800 mm and 400mm resp. using exact solution; calculate the heat transfer rate from.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Determine heat loss per meter length of duct corresponding to unit temperature difference.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Calculate steady state heat loss from the door.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Explain Reynolds analogy.
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Explain physical significance of the Reynolds number and Prandtl number
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Significance of dimensionless numbers used in heat transfer by convection
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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Show by dimensional analysis for forced convection,
heat transfer updated 6.1 years ago by teamques10 ★ 70k
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