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Enhancement of melting heat transfer of ice slurries by an injection flow in a rectangular cross sectional horizontal duct
| Title: | Enhancement of melting heat transfer of ice slurries by an injection flow in a rectangular cross sectional horizontal duct |
| Authors: | Fujii, Kota Browse this author | | Yamada, Masahiko Browse this author |
| Keywords: | Ice slurry | | Latent heat | | Two-phase flow | | Injection flow | | Melting heat transfer |
| Issue Date: | 2-Oct-2013 |
| Publisher: | Pergamon-elsevier science ltd |
| Journal Title: | Applied thermal engineering |
| Volume: | 60 |
| Issue: | 1-2 |
| Start Page: | 72 |
| End Page: | 78 |
| Publisher DOI: | 10.1016/j.applthermaleng.2013.06.046 |
| Abstract: | Ice slurries are now commonly used as cold thermal storage materials, and have the potential to be applied to other engineering fields such as quenching metals to control properties, emergency cooling systems, and preservation of food and biomaterials at low temperatures. Although ice slurries have been widely utilized because of their high thermal storage densities, previous studies have revealed that the latent heat of ice particles is not completely released on melting because of insufficient contact between the ice particles and a heated surface. In this study, an injection flow that was bifurcated from the main flow of an ice slurry was employed to promote melting heat transfer of ice particles on a horizontal heated surface. The effects of injection angle and injection flow rate on local heat transfer coefficients and heat transfer coefficient ratios were determined experimentally. The results show that from two to three times higher heat transfer coefficients can be obtained by using large injection flow rates and injection angles. However, low injection angles improved the utilization rate of the latent heat of ice near the injection point by approximately a factor of two compared to that without injection. (C) 2013 Elsevier Ltd. All rights reserved. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/53630 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山田 雅彦
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