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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Qiu, Lu Dubey, Swapnil Choo, Fook Hoong Duan, Fei |
| Copyright Year | 2016 |
| Abstract | A three-domain conjugation heat transfer problem, the model of a phase-change shell-and-tubes heat exchanger, was studied both experimentally and numerically. The saturated water was impinged onto an array of hot tubes that arranged in a confined cylindrical cavity, and then boiled during the travelling to the downstream. The tubes were hollow, through which the hot air was passing trough and supplied the heat to boil the water on the shell side. Therefore, the problem involved three conjugated heat transfer domains: outside-tube two-phase boiling flow, solid conduction in tubes and inside-tube single-phase convective flow. In the experiments, the heat transfer at three different water inlet velocities and nine different air inlet temperatures were tested. The measured wall temperatures and the transferred energy were found to be independent of water inlet velocity. The wall temperatures in the core area (in the vicinity of the dense tube array) were relatively uniform. However, a huge temperature gradient was measured at the peripheral region. The experimental data were used to validate the simulation that accomplished by ANSYS-Fluent V16.1. High quality hexahedral meshes were generated and the PRI boiling model was adopted to simulate the boiling flow and heat transfer. It showed that the simulation results agreed well with the experimental data. Based on the simulations, the detailed fluid field and the wall temperature distributions were analysis and discussed. |
| Sponsorship | Heat Transfer Division |
| File Format | |
| ISBN | 9780791850336 |
| DOI | 10.1115/HT2016-7351 |
| Volume Number | Volume 2: Heat Transfer in Multiphase Systems; Gas Turbine Heat Transfer; Manufacturing and Materials Processing; Heat Transfer in Electronic Equipment; Heat and Mass Transfer in Biotechnology; Heat Transfer Under Extreme Conditions; Computational Heat Transfer; Heat Transfer Visualization Gallery; General Papers on Heat Transfer; Multiphase Flow and Heat Transfer; Transport Phenomena in Manufacturing and Materials Processing |
| Conference Proceedings | ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels |
| Language | English |
| Publisher Date | 2016-07-10 |
| Publisher Place | Washington, DC, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Water Temperature Shells Heat exchangers Boiling Flow (dynamics) Temperature gradient Wall temperature Heat conduction Cavities Fluids Heat Simulation results Simulation Heat transfer |
| Content Type | Text |
| Resource Type | Article |
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