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Design and application of gas gas heat exchangers with disk doughnut baffles in conversion system

Zeng Hongtao  
Two gas gas heat exchangers, arranged in series, with disk doughnat baffles and capacity of 33*!000 *!m 3/h gas were designed and made to replace existing ones with segmental baffles The new heat exchangers have practical overall heat transfer coefficient of 20 5*!W/(*!m 2·K),up 84 7%,and total pressure drop of 686 Pa on the tube side and 771 Pa on the shell side, respectively down 65 0% and 60 1%.They have operated well for two years
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