Water flows through a shower head steadily at the rate of 8 kg/min. The water is heated in an electric water heater from 150C to 450C. In an attempt to conserve energy, it is proposed to pass the drained warm water at a temperature of 380C through a heat exchanger to preheat the incoming cold water. Design a heat exchanger that is suitable for this task, and discuss the potential savings in energy.

Q: A 10 mm diameter rivet holds three sheets of metal together and is loaded as shown in figure below,…

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Q: Consider a liquid (Cp = 2.2 kJ /kg·K) is cooled at a rate of 12 kg/min from 150°C to 40°C in the…

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Q: n-walled, double-tube, counterflow heat exchanger is used to cool oil (Cp = 2.20 kJ/kg °C) from 150…

A: Given data as per question For Hot fluid , oil Cph=2.2 kJ/kg°C, Thi=150°C, Tho=40°C, m˙=2 kg/s For…

Q: Steam at 1.4 MPa and 300°C enters the shell side of a shell and tube heat exchanger. It leaves as…

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Q: Water is pumped from a lake to a storage tank 18 m above at a rate of 70 L/s while consuming 20.4 kW…

A: Density of water = 1000 kg/m3 Height of tank H = 18 m flow rate V = 70 L/s = 0.07 m3/s Pump Power =…

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.