A body is desired to be heated with hot water and oil on the body side in a heat exchanger with 20 pipe passes. The inner and outer diameters of the copper pipe are 20 and 24 mm, respectively. Water with a flow rate of 0.2 kg / s enters the pipe at 87 ° C and leaves at 43 ° C. The inlet and outlet temperatures of the oil in the heat exchanger are 7 ° C and 37 ° C, respectively. Average heat transfer coefficient on the outer surface of the pipes is 800 W / m ° K. The fouling resistances on both sides are negligible. Determine; a) Heat transfer b) External surface based total heat transfer coefficient, c) Determine the pipe length in one pass.
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.
A body is desired to be heated with hot water and oil on the body side in a heat exchanger with 20 pipe passes. The inner and outer diameters of the copper pipe are 20 and 24 mm, respectively. Water with a flow rate of 0.2 kg / s enters the pipe at 87 ° C and leaves at 43 ° C. The inlet and outlet temperatures of the oil in the heat exchanger are 7 ° C and 37 ° C, respectively. Average heat transfer coefficient on the outer surface of the pipes is 800 W / m ° K. The fouling resistances on both sides are negligible.
Determine;
a) Heat transfer
b) External surface based total heat transfer coefficient,
c) Determine the pipe length in one pass.
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