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8.13 A counterflow heat exchanger is employed to cool 0.55 kg/s (c = 2.45 kJ/kg°C) of oil from 115°C to 40°C by the use
Posted: Tue Apr 26, 2022 7:37 pm
by answerhappygod
- 8 13 A Counterflow Heat Exchanger Is Employed To Cool 0 55 Kg S C 2 45 Kj Kg C Of Oil From 115 C To 40 C By The Use 1 (34.51 KiB) Viewed 64 times
8.13 A counterflow heat exchanger is employed to cool 0.55 kg/s (c = 2.45 kJ/kg°C) of oil from 115°C to 40°C by the use of water. The Inlet and outlet temperatures of cooling water are 15°C and 75°C, respectively. The overall heat transfer coefficient is expected to be 1450 W/m2K. Using the NTU method, calculate the follow- ing: (a) The mass flow rate of water; (b) the effectiveness of the heat exchanger and (c) the surface area required.