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In: Mechanical Engineering

In a gas turbine of a thermoelectric plant a regenerator is used that preheats the air...

In a gas turbine of a thermoelectric plant a regenerator is used that preheats the air before it enters the combustion chamber. You have the options of a backflow heat exchanger or a shell heat exchanger and two tube passages. The air leaves the compressor at a temperature of 350 C and the exhaust gases have a temperature of 700 C. The mass flow in both cases is 5 kg / sec. The overall transfer coefficient is 75 w / m2 K. In both cases the area is 18 m2. Find the best posible exchanger.

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