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2023 Vol.43, Issue 4

Research Article

Analysis of the Heat Transfer and Pressure Drop by the Turbulator Having a Non-Uniform Triangular Cross-Section in Air-Type PV/T Collector

공기식 태양광/열 집열기 내 비균일 삼각 단면을 갖는 난류 촉진제에 의한 열전달 및 압력강하 성능 분석

Seongbhin Kim1
,
Kwangam Moon1
,
Hwiung Choi2
,
Byungwha An3
,
Kwanghwan Choi4*
김 성빈1
,
문 광암1
,
최 휘웅2
,
안 병화3
,
최 광환4*
1Dr Candidate, Graduate School of Refrigeration and Air-Conditioning Engineering, Pukyong National University
2Research Professor, Industry-University Cooperation Foundation, Pukyong National University
3Researcher, Yabes Co., Ltd.
4Professor, Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University
1부경대학교 냉동공조공학과 대학원, 박사과정
2부경대학교 산학협력단, 연구교수
3(주)야베스, 연구원
4부경대학교 냉동공조공학과, 교수
*Corresponding Author
30 August 2023. pp. 1-18
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Abstract

A photovoltaic/thermal (PV/T) collector prevents a decrease in its electrical efficiency by reducing the temperature of the photovoltaic cell using a fluid. Air-type PV/T collectors use air as the fluid; however, the thermal efficiency of this collector is typically lower than that of other types of collectors. Thus, it is important to improve the thermal efficiency of air-type PV/T collectors. In this study, the heat transfer enhancement and pressure drop caused by a turbulator with a nonuniform triangular cross-section in a PV/T collector were analyzed as one of the methods for improving the thermal efficiency of a collector. The results were obtained using computational fluid dynamics analysis. As a results, the Nusselt number (Nu) and friction factor (f) improved 1.45 and 5.03 times, respectively, compared to those of the smooth air channel. The maximum thermal hydraulic performance parameter, which considered both the enhancement in heat transfer and the increase in pressure drop, was found to be 1.22. In addition, the correlations for Nu and f were developed as functions of the geometric conditions of the turbulator. The results indicated that the developed correlation could predict the simulated values with mean absolute percentage errors of 3.24% and 5.31% for Nu and f, respectively.

Keywords
PV/T
Computational fluid dynamics
Heat transfer
Nusselt number
Friction factor
키워드
태양광/열 집열기
전산유체해석
열전달
Nu 수
마찰계수
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 43
  • No :4
  • Pages :1-18
  • Received Date : 2023-03-20
  • Revised Date : 2023-06-13
  • Accepted Date : 2023-06-13
  • DOI :https://doi.org/10.7836/kses.2023.43.4.001
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