Oil in an engine is being cooled by air in a crossflow heat exchanger, where both fluids are unmixed Oil (c ph 2047 J kg middot K) flowing with a flow rate of 0 026 kg s enters the heat exchanger at 75 deg C, while air (c pc 1007 J kg middot K) enters at 30 deg C with a flow rate of 0 21 kg s The o...

Oil in an engine is being cooled by air in a crossflow heat exchanger, where both fluids

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Oil in an engine is being cooled by air in a crossflow heat exchanger, where both fluids are unmixed. Oil (c_ph= 2047 J/kg·K) flowing with a flow rate of 0.026 kg/s enters the heat exchanger at 75°C, while air (c_pc= 1007 J/kg·K) enters at 30°C with a flow rate of 0.21 kg/s. The overall heat transfer coefficient of the heat exchanger is 53 W/m²·K and the total surface area is 1 m². Determine

(a) The heat transfer effectiveness

(b) The outlet temperature of the oil.

Alr flow (unmixed) Oil flow (unmixed)

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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Question Posted: Dec 12, 2018 06:48 AM

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