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Heat Transfer

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state the different sources of heat in metal cutting.
heat transfer updated 2.7 years ago by sagarkolekar ★ 11k
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Derive an equation for free convection in heat transfer operation by use of dimensional analysis
heat transfer updated 2.8 years ago by yashbeer ★ 11k
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A 15mm diameter mild steel sphere $(k = 42 W/m^0C)$ is exposed to cooling airflow at $20^0C$ resulting in the convective coefficient $h= 120 W/m^{2 0}C$.
heat transfer updated 2.9 years ago by hamzarao556756 • 20
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Why extended surface are used?
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Derive expression for temperature distribution and heat dissipation in a straight fin of rectangular profile of infinitely long fin.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Derive a relation of heat transfer through fin with heat loosing tip.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Two pin fins are identical except that the diameter of one is twice of other. For which fin will i) Fin Effectiveness (ii) Fin efficiency be higher.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Explain briefly the condensation mechanism
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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What is meant by film condensation and drop wise condensation?
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Discuss in brief various modes of Boiling.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Draw a neat boiling curve for water and mark the different regimes.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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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 4.6 years ago by teamques10 ★ 69k
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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 4.6 years ago by teamques10 ★ 69k
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Calculate the fluid outlet temperature for the counter flow and parallel flow arrangements.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Calculate the surface area.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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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 4.6 years ago by teamques10 ★ 69k
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Derive expression for effectiveness by NTU method for parallel flow.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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What is Heat Exchanger? Define heat exchanger effectiveness.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Classify Heat Exchangers on various flow arrangements.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Derive the expression for log mean temperature difference (LMTD) in parallel flow heat exchanger. State your assumption.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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What is meant by Fouling in Heat Exchanger?
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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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 4.6 years ago by teamques10 ★ 69k
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What is fouling in Heat Exchangers?
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Define effectiveness and NTU of a heat exchanger.
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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Explain the number of transfer units (NTU).
heat transfer updated 4.6 years ago by teamques10 ★ 69k
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