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...

Full description

Bibliographic Details
Main Authors: Zhengqing Zhang, Mingyong Wang, Youhao Wang, Suoying He, Ming Gao
Format: Article
Language:English
Published: Elsevier 2022-02-01
Series:Case Studies in Thermal Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X22000302
_version_ 1818972007411220480
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
work_keys_str_mv AT zhengqingzhang influencesofdrywethybridrainzoneontheheatandmasstransfercharacteristicsofwetcoolingtowersacasestudy
AT mingyongwang influencesofdrywethybridrainzoneontheheatandmasstransfercharacteristicsofwetcoolingtowersacasestudy
AT youhaowang influencesofdrywethybridrainzoneontheheatandmasstransfercharacteristicsofwetcoolingtowersacasestudy
AT suoyinghe influencesofdrywethybridrainzoneontheheatandmasstransfercharacteristicsofwetcoolingtowersacasestudy
AT minggao influencesofdrywethybridrainzoneontheheatandmasstransfercharacteristicsofwetcoolingtowersacasestudy