(a) Develop an initial configuration for a shell-and-tube heat exchanger to meet this service. Use plain...
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(a) Develop an initial configuration for a shell-and-tube heat exchanger to meet this service. Use plain (un-finned) tubes. (b) Perform the rating calculations for the initial configuration obtained in part (a). (c) Based on the results of the rating calculations in part (b), specify what changes, if any, should be made to the configuration of the heat exchanger for the next trial. Obtain a final design for the heat exchanger. (d) 320,000 lb/h of oil (32°API, Kw = 12.0) will be cooled from 260°F to 130°F using treated water from a cooling tower with a range of 80°F to 120°F. For each stream, the inlet pres- sure will be 50 psia and a maximum pressure drop of 12 psi is specified. A fouling factor of 0.002 h ft2 °F/Btu is required for the oil stream, which is not corrosive. Properties of the oil are given below. Oil property Cp (Btu/lbm. °F) k (Btu/h ft. °F) / (cp) p (lbm/ft³) Pr *μ(cp) = 0.00488 exp [4230.8/T(R)]. Value at 195°F 0.53 0.068 3.12* 50.5 58.8 (a) Develop an initial configuration for a shell-and-tube heat exchanger to meet this service. Use plain (un-finned) tubes. (b) Perform the rating calculations for the initial configuration obtained in part (a). (c) Based on the results of the rating calculations in part (b), specify what changes, if any, should be made to the configuration of the heat exchanger for the next trial. Obtain a final design for the heat exchanger. (d) 320,000 lb/h of oil (32°API, Kw = 12.0) will be cooled from 260°F to 130°F using treated water from a cooling tower with a range of 80°F to 120°F. For each stream, the inlet pres- sure will be 50 psia and a maximum pressure drop of 12 psi is specified. A fouling factor of 0.002 h ft2 °F/Btu is required for the oil stream, which is not corrosive. Properties of the oil are given below. Oil property Cp (Btu/lbm. °F) k (Btu/h ft. °F) / (cp) p (lbm/ft³) Pr *μ(cp) = 0.00488 exp [4230.8/T(R)]. Value at 195°F 0.53 0.068 3.12* 50.5 58.8
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Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
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