Hot water is used to heat air in a double pipe heat exchanger. If the heat transfer coefficients on the water side and on the air side are 100 Btu/(h ft2 ?F) and 10 Btu/(h ft2 ?F), respectively, calculate the overall heat transfer coefficient based on the outer diameter. The heat exchanger pipe is 2 inch, schedule 40, made of steel (k = 54 W/m K), with water inside. Express your answer in Btu/(hr ft2 ?F) and W/(m2 ?C).GIVENA double pipe heat exchanger with water in inner tube and air in the annulusHeat transfer coefficientsWater side (hi ) = 1000 Btu/(h ft2 ?F)Air side (ho) = 10 Btu/(h ft2 ?F)Inner pipe: 2 inch, schedule 40, made of steelPipe thermal conductivity (k) = 54 W/(m K)ASSUMPTIONSUniform heat transfercoefficients

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Alr Water 2 Inch Schedule 40