An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process
Tubular moving bed heat exchangers (i.e., MBHE) are widely used to recover waste heat from high-temperature solid granules. However, the stagnant zone and the cavity zone around the heat exchange tube, as well as bridging-and-breaking phenomenon, would bring a significant heat resistance on heat tra...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25004538 |
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| author | Zhihan Li Weiqin Lu Tuo Zhou Yongqi Liu Yuqiu Zhang |
| author_facet | Zhihan Li Weiqin Lu Tuo Zhou Yongqi Liu Yuqiu Zhang |
| author_sort | Zhihan Li |
| collection | DOAJ |
| description | Tubular moving bed heat exchangers (i.e., MBHE) are widely used to recover waste heat from high-temperature solid granules. However, the stagnant zone and the cavity zone around the heat exchange tube, as well as bridging-and-breaking phenomenon, would bring a significant heat resistance on heat transfer between high-temperature solid granule and tube wall. Experiment and CFD-DEM simulation in this paper verify the similarity of this phenomenon in hoppers and MBHEs. Besides, three kinds of MBHEs using different kinds of tubes are used to study whether the methods used to improve the flow rate of the hopper can also be used to improve the flow stability of the MBHEs, the result shows that the vertical-direction-force between package particles and MBHE tube bundle is reduced by using these new kinds of tubes. Moreover, many cases under different flow velocity in MBHE are studied to prove the universality of the method. This study provides a reference for future research on improving the flow conditions in tubular MBHEs. |
| format | Article |
| id | doaj-art-51d6859ea66747e993f47e5e33a48dbf |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-51d6859ea66747e993f47e5e33a48dbf2025-08-20T02:01:39ZengElsevierCase Studies in Thermal Engineering2214-157X2025-07-017110619310.1016/j.csite.2025.106193An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge processZhihan Li0Weiqin Lu1Tuo Zhou2Yongqi Liu3Yuqiu Zhang4School of Transportation and Vehicle Engineering, Shandong University of Technology, 255049, Shandong, ChinaKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Haidian District, 100084, Beijing, ChinaKey Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Haidian District, 100084, Beijing, ChinaSchool of Transportation and Vehicle Engineering, Shandong University of Technology, 255049, Shandong, China; Corresponding author.School of Transportation and Vehicle Engineering, Shandong University of Technology, 255049, Shandong, ChinaTubular moving bed heat exchangers (i.e., MBHE) are widely used to recover waste heat from high-temperature solid granules. However, the stagnant zone and the cavity zone around the heat exchange tube, as well as bridging-and-breaking phenomenon, would bring a significant heat resistance on heat transfer between high-temperature solid granule and tube wall. Experiment and CFD-DEM simulation in this paper verify the similarity of this phenomenon in hoppers and MBHEs. Besides, three kinds of MBHEs using different kinds of tubes are used to study whether the methods used to improve the flow rate of the hopper can also be used to improve the flow stability of the MBHEs, the result shows that the vertical-direction-force between package particles and MBHE tube bundle is reduced by using these new kinds of tubes. Moreover, many cases under different flow velocity in MBHE are studied to prove the universality of the method. This study provides a reference for future research on improving the flow conditions in tubular MBHEs.http://www.sciencedirect.com/science/article/pii/S2214157X25004538Spherical particlesMoving bed heat exchangerGranular flowDiscrete element method |
| spellingShingle | Zhihan Li Weiqin Lu Tuo Zhou Yongqi Liu Yuqiu Zhang An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process Case Studies in Thermal Engineering Spherical particles Moving bed heat exchanger Granular flow Discrete element method |
| title | An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process |
| title_full | An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process |
| title_fullStr | An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process |
| title_full_unstemmed | An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process |
| title_short | An optimization tube design for the tubular moving bed heat exchanger (MBHE) by the analogy with hopper discharge process |
| title_sort | optimization tube design for the tubular moving bed heat exchanger mbhe by the analogy with hopper discharge process |
| topic | Spherical particles Moving bed heat exchanger Granular flow Discrete element method |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25004538 |
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