Tag: KETTLE REBOILER

Engineers may design flat bundles in kettle reboilers by removing tuberows from round bundles to create a larger disengagement space. This webinar discusses application of the kettle reboiler circulation boiling model to flat bundles. It reviews calculations for the static driving head and maximum heat flux for flat bundles. We also...
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After discussing an overview of kettle reboilers and the fundamentals of entrainment, this webinar reviews Xist input and output as well as design considerations that affect kettle entrainment. By working through an example case, this webinar teaches that accurate prediction of liquid entrainment is crucial for some applications, that liquid carryover...
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This webinar discusses the advantages of flat-top bundles, reviews the implementation of the circulation boiling model in Xchanger Suite prior to version 7, and discusses the improvements in version 7....
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Flow boiling prediction methods were recently improved using data collected from ideal crossflow bundles. When applied with accurate property models, these modified methods also improve prediction of X‑shell and kettle reboiler heat transfer measurements. Future implementation of the modified methods in Xchanger Suite should improve the accuracy of flow boiling predictions;...
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This report reviews literature and HTRI kettle reboiler data obtained when the liquid level was below the top of the tube bundle. We propose both a method to predict the two-phase jet height above the liquid level and an algorithm for predicting the heat transfer coefficient above the liquid level....
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To gain further insight into kettle reboiler operation and improve Xist® models, we simulated several kettle reboilers in two dimensions using CFD. The two-phase simulation results show good agreement with pressure drop and vapor volume fraction measurements from the literature. However, recirculation ratios calculated from the CFD results are substantially greater...
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Three-dimensional computational fluid dynamics (CFD) simulations of experimental kettle reboiler slices from the literature, as well as from the HTRI kettle reboiler, allow examination of fluid flow behavior on a fine spatial scale—significantly beyond the resolution of available experimental measurements. Interestingly, our simulations of kettle slices yield recirculation ratios that agree...
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