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12k
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What is meant by film condensation and drop wise condensation?
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Discuss in brief various modes of Boiling.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Draw a neat boiling curve for water and mark the different regimes.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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In a straight tube of 60 mm diameter, water is flowing at a velocity of 12 m/s.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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A counter flow heat exchanger is employed to cool 0.55 kg/s (Cp = 2.45 KJ/KgC) of oil from 115 C to 40 C by the use of water The inlet and outlet temperature of cooling water 15C and 75C respectively.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Calculate the fluid outlet temperature for the counter flow and parallel flow arrangements.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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5.0k
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Calculate the surface area.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Hot air at 66deg C is cooled upto 38deg C by means of cold air at 15deg C. Mass flow rate of hot and cold air are 1.25 kg/s and 1.6 kg/s respectively.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Derive expression for effectiveness by NTU method for parallel flow.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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4.9k
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What is Heat Exchanger? Define heat exchanger effectiveness.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Classify Heat Exchangers on various flow arrangements.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
3
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71k
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Derive the expression for log mean temperature difference (LMTD) in parallel flow heat exchanger. State your assumption.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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What is meant by Fouling in Heat Exchanger?
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Derive the relationship between the effectiveness and the number of transfer units for a parallel flow heat exchanger.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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4.5k
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What is fouling in Heat Exchangers?
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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Define effectiveness and NTU of a heat exchanger.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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5.2k
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Explain the number of transfer units (NTU).
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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2.7k
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Determine Capacity ratio, NTU and effectiveness if the overall heat transfer coefficient is $300 W/m^2K4.
heat transfer updated 5.9 years ago by teamques10 ★ 70k
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6.5k
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Derive an expression for shape factor in the following cases
heat transfer updated 5.9 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 5.9 years ago by teamques10 ★ 70k
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Find the duct wall temperature.
heat transfer updated 5.9 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 5.9 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 5.9 years ago by teamques10 ★ 70k
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18k
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What is radiation shield?
heat transfer updated 5.9 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 5.9 years ago by teamques10 ★ 70k
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