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- Title
Numerical simulation of heat transfer performance of different heat exchange tubes in heat recovery steam generator.
- Authors
Gao, Haibo; Zhang, Yuqiu; Liu, Yongqi; Wang, Yanxia; Sun, Peng; Ma, Yuxiang; Gu, Zehong; Yu, Wenbo
- Abstract
For the purpose of reducing the cost of hydrogen production in process engineering and practice and enhancing the heat exchange efficiency of heat recovery steam generator, a new spring-blade mixed heat exchange tube was creatively put forward, and the performance evaluation criterion (PEC) was used as evaluation index of comprehensive heat transfer performance. To explore the heat transfer performance, the velocity distribution, temperature distribution, pressure distribution and comprehensive heat transfer performance were analyzed, and heat transfer coefficient and the value of PEC were obtained. The addition of spring and blade in the mixed heat exchange tube has obvious positive impacts on the velocity, temperature and pressure drop. In the Reynolds number range of 20000–40000, the heat exchange coefficient increment of the mixed heat exchange tube is increased by 35% and 45% than that of the spring and blade heat exchange tube respectively. The pressure drop is positively correlated with the heat exchange coefficient, and its increase leads to the decrease of PEC value.
- Subjects
WASTE heat boilers; HEAT transfer; HEAT transfer coefficient; TUBES; REYNOLDS number; TEMPERATURE distribution
- Publication
Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B, 2022, Vol 163, p506
- ISSN
0957-5820
- Publication type
Article
- DOI
10.1016/j.psep.2022.05.045