Abstract
Low pressure steam condensation on a double enhanced copper nickel tube bundle under loaded conditions. Energy balance indicates the accuracy of the dataset to within 10%. Checks on shell side measurements indicate they are of good quality. A comparison is made with the Nusselt model on plain copper tubes and with data from previous plain stainless steel tubes. Previous research on steam condensation indicates the tube side resistance is usually dominant. However, on the double enhanced tube bundle, the condensate film resistance is controlling. There is no marked improvement by the double enhanced tubes while using water as the process fluid. It is postulated that high surface tension fluids, such as water, cause fin inundation (thicker condensate film) and negates any heat transfer enhancement.
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