Crude oil at 198°C is to be cooled to 39°C. The oil flow-rate is 6.032 kg/s. Cooling water is available at 29°C and at the rate of 27.032 kg/s. The pressure drop allowance for each stream is 100 kN/m?. Design a suitable shell and tube heat exchanger for this duty. The following are the properties of the two streams at the average temperature: Water Crude Oil Density kg/m3 Viscosity mNm²s Thermal Conductivity 990 850 680 x 10-3 0.18 0.630 0.130 W/m K Specific Heat kJ/ kg °K 4.2 2.3 Data: Assume overall heat transfer coefficient of 5032 W/m? K. Tubes: 20 mm 9 d., 16 mm id, tubes, 4 m long, triangular pitch 1.25do, carbon steel. Pull through head, Floating Head type heat exchanger. Baffle = 1/5 of the shell diameter and 25 % cut baffles Fouling factors 0.0003 m2 K/ W for cooling water and Q.0002m? K/ W for crude oil Thermal conductivity of metal = 52 W/m K
Crude oil at 198°C is to be cooled to 39°C. The oil flow-rate is 6.032 kg/s. Cooling water is available at 29°C and at the rate of 27.032 kg/s. The pressure drop allowance for each stream is 100 kN/m?. Design a suitable shell and tube heat exchanger for this duty. The following are the properties of the two streams at the average temperature: Water Crude Oil Density kg/m3 Viscosity mNm²s Thermal Conductivity 990 850 680 x 10-3 0.18 0.630 0.130 W/m K Specific Heat kJ/ kg °K 4.2 2.3 Data: Assume overall heat transfer coefficient of 5032 W/m? K. Tubes: 20 mm 9 d., 16 mm id, tubes, 4 m long, triangular pitch 1.25do, carbon steel. Pull through head, Floating Head type heat exchanger. Baffle = 1/5 of the shell diameter and 25 % cut baffles Fouling factors 0.0003 m2 K/ W for cooling water and Q.0002m? K/ W for crude oil Thermal conductivity of metal = 52 W/m K
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter10: Heat Exchangers
Section: Chapter Questions
Problem 10.13P
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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
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