Water flows at the rate of 65kg/min through a double pipe counter flow HX. Water is heated from 50deg C to 75deg C by an oil flowing through the tube. the specific heat of oil is 1.78kJ/kg-K. The oil enters at 115 degC and leaves at 70degC. The overall heat transfer coefficient is 400W/m2-K. Calculate the rate of heat transfer and the required number of tubes with OD=30mm and L=4m

Water flows at the rate of 65kg/min through a double pipe counter flow HX. Water is heated from 50deg C to 75deg C by an oil flowing through the tube. the specific heat of oil is 1.78kJ/kg-K. The oil enters at 115 degC and leaves at 70degC. The overall heat transfer coefficient is 400W/m2-K. Calculate the rate of heat transfer and the required number of tubes with OD=30mm and L=4m

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.53P

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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.

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heated from 50 C to 75 C by an oil flowing through the tube.. The oil enters at 115 °C and leaves at 70 °C. The overall heat transfer co-efficient is 340 W/m²K. Water flows at the rate of 65 kg/min through a double pipe counter flow heat exchanger. Water is (Specific heat of water is 4186 J/kg. C, and the specific heat of the oil is 1780 j/kg. °C). calculate the following: 1. Heat exchanger area 2. Rate of heat transfer 3. Mass flow rate of oil