In a single-pass counterflow heat exchanger, 10,000 lb/hr of water enter at 60?F and cool 20,000 lb/h of an oil having a specific heat of 0.50 Btu/(lb ?F) from 200?F to 150?F. If the overall heat transfer coefficient is 50 Btu/(h ft2 ?F), determine the surface area required.GIVENWater cooling oil in a single-pass counterflow heat exchangerWater flow rate (mw) = 10,000 lb/hOil flow rate (mo) = 20,000 lb/hOil specific heat (cpo) = 0.50 Btu/(lb ?F)Water inlet temperature (Tw, in) = 60?FOil temperatureTo, in = 200?FTo, out = 150?FOverall heat transfer coefficient (U) = 50 Btu/(h ft2?F)

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Oll m. = 20,000 Ib/h Teout = 150°F Tan = 200°F Twin = 60°F Water m= 10,000 Ib/h