Optimization of the heating element in a gas-gas heater using an integrated analysis model

Young Mun Lee, Heeyoon Chung, Seon Ho Kim, Hyeng Sub Bae, Hyung Hee Cho

Research output: Contribution to journalArticle

Abstract

Gas-gas heaters (GGHs) are used to reheat gases through desulfurization in coal-fired power plants to reduce low-temperature corrosion and white smoke. Wrinkled heating elements are installed inside the GGH to perform effective heat exchange. An optimization study of the heating element shape was conducted to reduce the differential pressure effectively and improve performance. An integrated analysis model was applied. Based on actual operational data, a computational fluid dynamic analysis was conducted on the L-type heating element and GGH system. The experiments applied the optimal latin hypercube sampling method, and numerical analysis was performed for each sample. Based on the response surface, the result of the sample was optimized through the pointer algorithm. For the integrated analysis model, validation was performed by comparison with the actual operational data, and the thermal-fluid characteristics of the heating element and GGH system were analyzed to set three parameters: plate angle, undulated angle, and pitch 1. From the optimization result, increases in the undulated angle and pitch 1 reduce the pressure drop by widening the heating element cross section. By increasing the plate angle, the heat transfer area is secured and the reduced heat transfer coefficient is compensated, improving the GGH performance.

Original languageEnglish
Article number1932
JournalEnergies
Volume10
Issue number12
DOIs
Publication statusPublished - 2017 Dec 1

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Electric heating elements
Model Analysis
Heating
Optimization
Gases
Angle
Gas
Latin Hypercube Sampling
Heat Transfer Coefficient
Model Validation
Response Surface
Pressure Drop
Power Plant
Sampling Methods
Corrosion
Desulfurization
Computational Fluid Dynamics
Smoke
Dynamic Analysis
Dynamic analysis

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

Lee, Young Mun ; Chung, Heeyoon ; Kim, Seon Ho ; Bae, Hyeng Sub ; Cho, Hyung Hee. / Optimization of the heating element in a gas-gas heater using an integrated analysis model. In: Energies. 2017 ; Vol. 10, No. 12.
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Optimization of the heating element in a gas-gas heater using an integrated analysis model. / Lee, Young Mun; Chung, Heeyoon; Kim, Seon Ho; Bae, Hyeng Sub; Cho, Hyung Hee.

In: Energies, Vol. 10, No. 12, 1932, 01.12.2017.

Research output: Contribution to journalArticle

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