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2024 Vol.44, Issue 6 Preview Page

Research Article

Performance Evaluation of Air-Type PVT with Dual Channels and Semi-Circular Turbulence Promoters According to Air Mass Flow Rate

이중 채널 및 반원형 난류 촉진체를 가진 공기식 PVT의 공기 유량에 따른 성능 평가

Byeong-hwa An1
,
Seong-bhin Kim1
,
Kwang-am Moon1
,
Kwang-hwan Choi2*
안 병화1
,
김 성빈1
,
문 광암1
,
최 광환2*
1Dr. Candidate, Graduate School of Refrigeration and Air-Conditioning Engeneering, Pukyong National University
2Professor, Department of Refrigeration and Air-Conditioning Engeneering, Pukyong National University
1부경대학교 냉동공조공학과 대학원, 박사과정
2부경대학교 냉동공조공학과, 교수
*Corresponding Author
30 December 2024. pp. 65-77
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Abstract

A photovoltaic thermal collector (PVT) is a system that regulates the temperature of photovoltaic (PV) module cells by means of a certain fluid flowing underneath them, thereby preventing their electricity efficiency from decreasing. Through this process, the fluid abducting heat from the PV module cells can also produce useful thermal energy. However, air-type PVTs have lower thermal efficiency than those of other types owing to the low thermal conductivity of air; hence, to improve their performance, various methods, such as attaching turbulence promoters or adding air channels, have been proposed. The system proposed in this study was evaluated by applying three different mass flow conditions, i.e., 0.0455, 0.0899, and 0.1189 kg/s, under actual weather conditions. Results showed that both the thermal and electrical efficiencies improved with increasing airflow rate. The highest average overall efficiency, i.e., 84.8% at an airflow rate of 0.1189 kg/s, was achieved by considering the thermal and electricity efficiencies. As the airflow rate increased, the average overall efficiency improved by 44.5%, from a minimum of 58.7% to a maximum of 84.8%. Overall, the PVT system with the turbulence promoter and dual-channel structure improves the thermal and electricity efficiencies as the airflow increases.

Keywords
Photovoltaic thermal collector
Turbulence promoter
Dual channels
Air-type collector
Experiment
키워드
태양광열 집열기
난류 촉진체
이중 채널
공기식 집열기
실험
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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 : 44
  • No :6
  • Pages :65-77
  • Received Date : 2024-09-09
  • Revised Date : 2024-11-18
  • Accepted Date : 2024-11-19
  • DOI :https://doi.org/10.7836/kses.2024.44.6.065
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