Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study
To study the influences of the dry-wet hybrid rain zone (DWHR) on the heat and mass transfer characteristics for the super-large natural draft wet cooling towers (S-NDWCTs) and provide the relevant reference data for the optimal design, a case study is conducted based on the numerical model. The sim...
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Format: | Article |
Language: | English |
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Elsevier
2022-02-01
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Series: | Case Studies in Thermal Engineering |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22000302 |
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author | Zhengqing Zhang Mingyong Wang Youhao Wang Suoying He Ming Gao |
author_facet | Zhengqing Zhang Mingyong Wang Youhao Wang Suoying He Ming Gao |
author_sort | Zhengqing Zhang |
collection | DOAJ |
description | To study the influences of the dry-wet hybrid rain zone (DWHR) on the heat and mass transfer characteristics for the super-large natural draft wet cooling towers (S-NDWCTs) and provide the relevant reference data for the optimal design, a case study is conducted based on the numerical model. The simulation results show that, after adopting the DWHR, the average gas-water ratio on the bottom of the fillings increases by 4.22%, the volumetric heat transfer coefficient of the fillings zone, rain zone, and spraying zone increase by 1.69%, 2.31%, and 16.1% respectively, on average. Additionally, after adopting the DWHR, the contact heat transfer ratio increases, and the evaporation loss coefficient decreases obviously under the high crosswind speed but changes little under the low or middle crosswind speed. The research can provide an innovative method and theoretical guidance for the design of the S-NDWCTs. |
first_indexed | 2024-12-20T15:01:25Z |
format | Article |
id | doaj.art-4f5807e8c0e04ca3b721840f39dfc627 |
institution | Directory Open Access Journal |
issn | 2214-157X |
language | English |
last_indexed | 2024-12-20T15:01:25Z |
publishDate | 2022-02-01 |
publisher | Elsevier |
record_format | Article |
series | Case Studies in Thermal Engineering |
spelling | doaj.art-4f5807e8c0e04ca3b721840f39dfc6272022-12-21T19:36:39ZengElsevierCase Studies in Thermal Engineering2214-157X2022-02-0130101784Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case studyZhengqing Zhang0Mingyong Wang1Youhao Wang2Suoying He3Ming Gao4Shandong Engineering Laboratory for High-efficiency Energy Conservation and Energy Storage Technology & Equipment, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, ChinaXi'an Thermal Power Research Institute CO.LTD, Xian, 710054, ChinaShandong Engineering Laboratory for High-efficiency Energy Conservation and Energy Storage Technology & Equipment, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, ChinaShandong Engineering Laboratory for High-efficiency Energy Conservation and Energy Storage Technology & Equipment, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, ChinaShandong Engineering Laboratory for High-efficiency Energy Conservation and Energy Storage Technology & Equipment, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, China; Corresponding author.To study the influences of the dry-wet hybrid rain zone (DWHR) on the heat and mass transfer characteristics for the super-large natural draft wet cooling towers (S-NDWCTs) and provide the relevant reference data for the optimal design, a case study is conducted based on the numerical model. The simulation results show that, after adopting the DWHR, the average gas-water ratio on the bottom of the fillings increases by 4.22%, the volumetric heat transfer coefficient of the fillings zone, rain zone, and spraying zone increase by 1.69%, 2.31%, and 16.1% respectively, on average. Additionally, after adopting the DWHR, the contact heat transfer ratio increases, and the evaporation loss coefficient decreases obviously under the high crosswind speed but changes little under the low or middle crosswind speed. The research can provide an innovative method and theoretical guidance for the design of the S-NDWCTs.http://www.sciencedirect.com/science/article/pii/S2214157X22000302Heat and mass transferWet cooling towerDry-wet hybrid rain zoneCase study |
spellingShingle | Zhengqing Zhang Mingyong Wang Youhao Wang Suoying He Ming Gao Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study Case Studies in Thermal Engineering Heat and mass transfer Wet cooling tower Dry-wet hybrid rain zone Case study |
title | Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study |
title_full | Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study |
title_fullStr | Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study |
title_full_unstemmed | Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study |
title_short | Influences of dry-wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers: A case study |
title_sort | influences of dry wet hybrid rain zone on the heat and mass transfer characteristics of wet cooling towers a case study |
topic | Heat and mass transfer Wet cooling tower Dry-wet hybrid rain zone Case study |
url | http://www.sciencedirect.com/science/article/pii/S2214157X22000302 |
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