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Heat transfer enhancement in a parallel, finless heat exchanger using a longitudinal vortex generator, Part A: Numerical investigation
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In finless heat exchangers, condensate can drop rapidly under the influence of gravity because there are no fins in the way.
“For finless heat exchangers, the condensate can drop rapidly under the influence of gravity because there are no fins in the way, as shown in Fig. 19 (b).”
The thermal performance of finless heat exchangers is lower than that of louver fin heat exchangers under dry conditions.
“However, the thermal performance of finless heat exchangers is lower than that of louver fin heat exchangers under dry conditions.”
Under wet conditions, the finless heat exchanger with LVG performs similarly to the louver fin heat exchanger in terms of thermal-hydraulic performance due to its excellent drainage performance.
“Under wet conditions, the finless heat exchanger with LVG performed similarly to the louver fin heat exchanger in terms of thermal-hydraulic performance due to its excellent drainage performance.”
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Research works printed but not linked: 24
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- H. Nakano, H. Onishi, Y. Tada, A. Takimoto, Heat transfer characteristics of finless tube heat exchanger under frost conditions with mist deposition, in: Proceedings of Thermal Engineering Conference, 2007. pp. 253–254. · DOI
- H. Onishi, S. Mido, Y. Tada, A. Takimoto, Heat transfer characteristics with frosting of flat tube heat exchanger for refrigerator-performance comparison with fin-and-tube heat exchanger, in: The 46th Japanese National Heat Transfer Symposium, C1-311, 2009.
- A. Kaneko, M. Katsuta, R. Hori, Research of heat transfer and pressure drop characteristic of concavo-convex plate, in: The 48th Japanese National Heat Transfer Symposium, G321, 2011.
- Onishi, H., Yonekura, H., Tada, Y., and Takimoto, A. “Heat transfer performance of finless flat tube heat exchanger with vortex generator,” 14th International Heat Transfer Conference, IHTC14-23232, pp. 799-807, (2010). · DOI
- Y.L. He, Y. Zhang, Advances and outlooks of heat transfer enhancement by longitudinal vortex generators. arXiv preprint arXiv:1602.00323, 2016. · arXiv
- Wu, 2007, Investigation on laminar convection heat transfer in fin-and-tube heat exchanger in aligned arrangement with longitudinal vortex generator from the viewpoint of field synergy principle, Appl. Therm. Eng., 27, 2609, 10.1016/j.applthermaleng.2007.01.025 · DOI
- Wu, 2008, Numerical study on laminar convection heat transfer in a rectangular channel with longitudinal vortex generator. Part A: Verification of field synergy principle, Int. J. Heat Mass Transf., 51, 1179, 10.1016/j.ijheatmasstransfer.2007.03.032 · DOI
- Chen, 1998, Conjugate heat transfer of a finned oval tube with a punched longitudinal vortex generator in form of a delta winglet—parametric investigations of the winglet, Int. J. Heat Mass Transf., 41, 3961, 10.1016/S0017-9310(98)00076-3 · DOI
- Chen, 1998, Heat transfer enhancement of a finned oval tube with punched longitudinal vortex generators in-line, Int. J. Heat Mass Transf., 41, 4151, 10.1016/S0017-9310(98)00130-6 · DOI
- Chen, 2000, Heat transfer enhancement of finned oval tubes with staggered punched longitudinal vortex generators, Int. J. Heat Mass Transf., 43, 417, 10.1016/S0017-9310(99)00157-X · DOI
- Fiebig, 1993, Wing-type vortex generators for fin-and-tube heat exchangers, Exp. Therm. Fluid Sci., 7, 287, 10.1016/0894-1777(93)90052-K · DOI
- Biswas, 1994, Heat transfer enhancement in fin-tube heat exchangers by winglet type vortex generators, Int. J. Heat Mass Transf., 37, 283, 10.1016/0017-9310(94)90099-X · DOI
- Wang, 2002, Flow visualization of annular and delta winglet vortex generators in fin-and-tube heat exchanger application, Int. J. Heat Mass Transf., 45, 3803, 10.1016/S0017-9310(02)00085-6 · DOI
- Torii, 2002, Heat transfer enhancement accompanying pressure-loss reduction with winglet-type vortex generators for fin-tube heat exchangers, Int. J. Heat Mass Transf., 45, 3795, 10.1016/S0017-9310(02)00080-7 · DOI
- Pesteei, 2005, Experimental study of the effect of winglet location on heat transfer enhancement and pressure drop in fin-tube heat exchangers, Appl. Therm. Eng., 25, 1684, 10.1016/j.applthermaleng.2004.10.013 · DOI
- Wang, 2007, Experimental study of heat transfer enhancement in narrow rectangular channel with longitudinal vortex generators, Nucl. Eng. Des., 237, 686, 10.1016/j.nucengdes.2006.09.003 · DOI
- Leu, 2004, Heat transfer and fluid flow analysis in plate-fin and tube heat exchangers with a pair of block shape vortex generators, Int. J. Heat Mass Transf., 47, 4327, 10.1016/j.ijheatmasstransfer.2004.04.031 · DOI
- Chu, 2009, Three-dimensional numerical study on fin-and-oval-tube heat exchanger with longitudinal vortex generators, Appl. Therm. Eng., 29, 859, 10.1016/j.applthermaleng.2008.04.021 · DOI
- He, 2013, Analysis of heat transfer and pressure drop for fin-and-tube heat exchangers with rectangular winglet-type vortex generators, Appl. Therm. Eng., 61, 770, 10.1016/j.applthermaleng.2012.02.040 · DOI
- Kim, 2004, Heat-transfer and friction characteristics for the louvered-fin heat exchanger, J. Thermophys. Heat Transf., 18, 58, 10.2514/1.9123 · DOI
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Cited by
Sorted by citations
Zhang, L., Song, M., Mao, N., & Dong, J. (2022) · International Journal of Heat and Mass Transfer · doi:10.1016/j.ijheatmasstransfer.2021.122192 · Cited by 38
Xiong, T., Liu, G., Gao, Q., Yan, G., & Yu, J. (2023) · Journal of Building Engineering · doi:10.1016/j.jobe.2022.105654 · Cited by 26
Metadata
- Authors
- Li, J., Dang, C., & Hihara, E.
- Affiliations
- The University of Tokyo (JP)
- Corresponding author
- Li, Jiyang
- Venue
- International Journal of Heat and Mass Transfer
- Publisher
- Elsevier BV
- Published
- 2019-01
- Volume
- 128
- Pages
- 87-97
- ISSN
- 0017-9310 (ISSN-L)
- OpenAlex
- W2891333396
- Cited by
- 30
- References
- 0
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 2 · 2023: 5 · 2022: 4 · 2021: 7 · 2020: 3 · 2019: 3
- FWCI
- 2.08
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Heat and Mass Transfer (publishedVersion)
- Funders
- New Energy and Industrial Technology Development Organization
- China Scholarship Council
- Ministry of Education, Culture, Sports, Science and Technology
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer Mechanisms
- Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Optimization
- Physical Sciences › Engineering › Mechanical Engineering › Ranque-Hilsch vortex tube
- Keywords
- heat transfer enhancement, longitudinal vortex generators, air conditioners, vortex generator geometry, condensation, air flow
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