The Effects of inlet water temperature on condensing film coefficiencts

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Title: The Effects of inlet water temperature on condensing film coefficiencts
Author: Smith, Alan
Abstract: This experiment investigated the effects of the inlet water temperature on the overall condensing heat transfer coefficient in a surface condenser. The results of the testing during the investigation were used to determine a temperature correction factor which was then compared to the correlation published by the Heat Exchange Institute ' . The comparison revealed that the correlation published by the Heat Exchange Institute is not accurate for inlet water temperature less than 65 F and greater than 75 F. In addition, a comparison was made between the overall heat transfer coefficient that was obtained by experiment and the overall heat transfer coefficient as calculated by the additive resistance method using the Petukhov-Popov correlation for the water side coefficient and the Nusselt single tube correlation for the steam side coefficient. From this comparison it was determined that the additive resistance method using the Petukhov-Popov correlation for the water side coefficient and the single tube Nusselt correlation predicts the overall heat transfer coefficient for 7/8 inch tubes on a 1.125 inch pitch within 6% of the experimental value over a cooling water inlet temperature rangeof55F to 80F.
Record URI: http://hdl.handle.net/1850/11923
Date: 1995-06

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