engineering recuitment GATE ME 2023-24 Test Series Heat Transfer Heat Exchanger Heat Exchanger Analysis
A flow of 0.1 kg/s of exhaust gases at 700 K from a gas turbine is used to preheat the incoming air at 0.1 kg/s, which is at the ambient temperature of 300 K. It is desired to cool the exhaust to 400 K, and it is estimated that an overall heat transfer coefficient of 30 W/m2K can be achieved in an appropriate exchanger. Take the specific heat of exhaust gases the same as for air, which is 1000 J/kgK. The area required for a counter flow heat exchanger is ________ m2.
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