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- W4301877462 abstract "Abstract The total annual cost for a shell-and-tube-type heat exchanger, which is the sum of the annual power cost plus the fixed charges or annual amortization of the initial cost of the equipment, is found to vary sharply with small changes in tube size when the heat-transfer rate is held constant. Equations are developed reducing the number of assumptions to length of tubes and diameter of tubes for fixed design conditions such as total flow rates in shell and tube and required heat-transfer rate. For a selected length as a parameter, then, the total annual cost can be calculated for each tube diameter. The optimum tube diameter is determined from a graph of these corresponding values which has a well-defined minimum value for the total annual cost. A family of these curves, each having a different length as the parameter, will each have a minimum. These minimal values will all be nearly equal. Another family of curves with standard tube diameter as the parameter will each have a minimum giving the optimum length for each diameter. Therefore only one convenient parameter need be selected from which the optimum combination can be determined from a curve. Since the required heat-transfer-surface area is now known, the number of tubes for this combination follows automatically." @default.
- W4301877462 created "2022-10-05" @default.
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- W4301877462 date "1950-11-01" @default.
- W4301877462 modified "2023-09-25" @default.
- W4301877462 title "Optimum Tube Size for Shell-and-Tube-Type Heat Exchangers" @default.
- W4301877462 doi "https://doi.org/10.1115/1.4016915" @default.
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