Optimal Design of Heating Element to Enhance Thermal Performance in Gas-Gas Heater

Lee, Young Mun; Chung, Hyo-Sang; Kim, Seon Ho; Bae, Hyeng Seob; Cho, Hyung-Hee

doi:10.1615/tfec2017.che.018168

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This research article extends the work described in ASTFE (American Society of Thermal and Fluids Engineers) Paper No. TFEC-IWHT2017-18168 of the 2nd Thermal and Fluids Engineering Conference 2017 and 4th International Workshop on Heat Transfer 2017 [25].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Heating Element in a Gas-Gas Heater Using an Integrated Analysis Model

et al. 2017

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%