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Thermo-flow characteristics of the main-auxiliary combined natural draft dry cooling system
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Zongyang ZHANG1, 2, Yichen HOU1, 2, Hanyu ZHOU1, 2, He JIA1, 2, Lei CHEN1, 2, Yanqiang KONG1, 2, Weijia WANG1, 2, Lijun YANG1, 2, Xiaoze DU1, 2
Thermal Power Generation | 2023, 52(5) : 82 - 91
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Thermal Power Generation | 2023, 52(5): 82-91
• Thermal energy and science research •
Thermo-flow characteristics of the main-auxiliary combined natural draft dry cooling system
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Zongyang ZHANG1, 2, Yichen HOU1, 2, Hanyu ZHOU1, 2, He JIA1, 2, Lei CHEN1, 2, Yanqiang KONG1, 2, Weijia WANG1, 2, Lijun YANG1, 2, Xiaoze DU1, 2
Affiliations
  • 1.Key Laboratory of Power Station Energy Transfer Conversion and System of Ministry of Education, North China Electric Power University, Beijing 102206, China
  • 2.School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Published: 2023-05-25 doi: 10.19666/j.rlfd.202208197
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The main-auxiliary combined indirect dry cooling system has attracted attention from the industry in recent years, while few scholars at home and abroad have conducted studies on its flow and heat transfer performances. In order to investigate the transport characteristics of the main-auxiliary combined indirect dry cooling system under different configurations, this paper establishes six physical models of the combined indirect dry cooling systems with the double-layer/single-layer main and auxiliary radiators. And then the cooling performances are analyzed and compared using the commercial software FLUENT. The results show that, the construction has obviously higher impacts on the auxiliary cooling system than the main one, meanwhile the air mass flow rate presents larger difference than the heat rejection; In absence of wind, the main-auxiliary combined cooling system with double-layer heat exchanger arrangement, has better cooling performance than that with the single layer heat exchanger arrangement, and case A possesses the best cooling performance; Under crosswind effects, case C has highest cooling capability of the auxiliary cooling system, while the behavior of its main cooling system should also be considered before the engineering selection. This research may provide some theoretical guidelines for the engineering design and application of the main-auxiliary combined natural draft dry cooling system.

main-auxiliary cooling system  /  combined natural draft dry cooling system  /  double-layer heat exchanger arrangement  /  single-layer heat exchanger arrangement  /  flow and heat transfer performances
Zongyang ZHANG, Yichen HOU, Hanyu ZHOU, He JIA, Lei CHEN, Yanqiang KONG, Weijia WANG, Lijun YANG, Xiaoze DU. Thermo-flow characteristics of the main-auxiliary combined natural draft dry cooling system[J]. Thermal Power Generation, 2023 , 52 (5) : 82 -91 . DOI: 10.19666/j.rlfd.202208197
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  • National Nature Science Foundation of China(52006065)
Appendix
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Year 2023 volume 52 Issue 5
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66
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Article Info
doi: 10.19666/j.rlfd.202208197
  • Receive Date：2022-08-16
  • Online Date：2026-01-23
  • Published：2023-05-25
Article Data
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History
  • Received：2022-08-16
Funding
National Nature Science Foundation of China(52006065)
Affiliations
    1.Key Laboratory of Power Station Energy Transfer Conversion and System of Ministry of Education, North China Electric Power University, Beijing 102206, China
    2.School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202208197
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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