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Thermal characteristics and air leakage numerical simulation of four-compartment rotary air preheater
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Mubalaike DUGAMAITI, Gang WANG, Qi WANG, Meiheriayi MUTAILIPU
Thermal Power Generation | 2023, 52(12) : 147 - 156
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Thermal Power Generation | 2023, 52(12): 147-156
• Power generation technology forum •
Thermal characteristics and air leakage numerical simulation of four-compartment rotary air preheater
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Mubalaike DUGAMAITI, Gang WANG, Qi WANG, Meiheriayi MUTAILIPU
Affiliations
  • School of Electrical Engineering, Xinjiang University, Urumqi 830047, China
Published: 2023-12-25 doi: 10.19666/j.rlfd.202305078
Outline
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To solve the problem of excessive air leakage from the four-compartment air preheater, a four-compartment rotary air preheater of a 1 000 MW power plant is used as the study object to investigate the thermal characteristics, rotor thermal deformation and air leakage of the air preheater, by combining theoretical analysis with numerical simulation. The numerical simulation results show that, for every 1% increase in air leakage rate of the 1 000 MW unit, the heat transfer efficiency of air preheater will be reduced by 1.13%, and the power plant will consume 3 604 tons of standard coal more on average per year. There are large temperature gradients in the axial and circumferential directions inside the air preheater, and most of the corrosion and deposition areas are distributed in the low temperature section. There are large differences in rotor thermal deformation during different operating conditions of the air preheater, and the maximum thermal deformation occurs on the secondary air side. It is necessary to make corresponding adjustments according to the thermal deformation characteristics of different positions of the rotor when setting the sealing system.

four-compartment rotary air preheater  /  thermal characteristics  /  rotor thermal deformation  /  air leakage control  /  numerical simulation
Mubalaike DUGAMAITI, Gang WANG, Qi WANG, Meiheriayi MUTAILIPU. Thermal characteristics and air leakage numerical simulation of four-compartment rotary air preheater[J]. Thermal Power Generation, 2023 , 52 (12) : 147 -156 . DOI: 10.19666/j.rlfd.202305078
Funding
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  • Tianchi Doctoral Program of Xinjiang Uygur Autonomous Region(TCBS202006)
  • Natural Science Foundation of Xinjiang Uygur Autonomous Region(2021D01C089)
  • Key R & D Funded Projects in Xinjiang Uygur Autonomous Region(2022B01033-2)
  • The Central Government Guides Local Science and Technology Development Special Funding Projects(ZYYD2022C16)
Appendix
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Year 2023 volume 52 Issue 12
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113
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Article Info
doi: 10.19666/j.rlfd.202305078
  • Receive Date：2023-05-11
  • Online Date：2026-01-26
  • Published：2023-12-25
Article Data
Affiliations
History
  • Received：2023-05-11
Funding
Tianchi Doctoral Program of Xinjiang Uygur Autonomous Region(TCBS202006)
Natural Science Foundation of Xinjiang Uygur Autonomous Region(2021D01C089)
Key R & D Funded Projects in Xinjiang Uygur Autonomous Region(2022B01033-2)
The Central Government Guides Local Science and Technology Development Special Funding Projects(ZYYD2022C16)
Affiliations
    School of Electrical Engineering, Xinjiang University, Urumqi 830047, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202305078
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表12种不同金属材料的力学参数
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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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