Question 5.7 In a parallel flow heat exchanger, hot fluid enters the heat exchanger at a temperature of 150°C and a mass flow rate of 3 kg/s. The cooling medium enters the heat exchanger at a temperature of 30°C with a mass flow rate of 0.5 kg/s and Examiner's Signature Moderator's Signature Page leaves at a temperature of 70°C. The specific heat capacities of the hot and cold fluids are 1150 J/kg-K and 4180 J/kg K, respectively. The convection heat transfer coefficient on the inner and outer side of the tube is 300 W /m2.K and 800 W /m2.K, respectively. For a fouling factor of 0.0003 m2.K/W on the tube side and 0.0001 m2.K/W on the shell side, determine the overall heat transfer coefficient, the exit temperature of the hot fluid as well as the surface area of the heat exchanger.

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Q: 1. Explain and analyze log mean temperature differences for parallel and counter-flow conditions in…

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Q: Question 2 An ideal gas, Cp = (7/2)R, is heated in a steady-flow heat exchanger from 343.15 K to…

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Q: Consider a water-to-water counterflow heat exchanger with these specifications. Hot water enters at…

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Q: A finned-tube heat exchanger is used as an air-conditioning condenser. During a steady state…

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Q: 5.26 WP Before being injected into a furnace, pulverized coal is preheated by passing it through a…

A: Tsur = 1000 °C = 1273 K(Tube surface temperature)v = 3 m/s (Velocity of coal pellets)D = 1 mm =…

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.