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2025 Vol.45, Issue 3 Preview Page

Research Article

Analysis of Thermal Efficiency for Glazed Perforated Solar Collector according to Air-Inflow Method

유창형 타공 태양열 집열기의 공기 유입 방식에 따른 열효율 분석

Hyeran Ki1
,
Hayeong Kim2
,
Jinhee Kim3
,
Juntae Kim4*
기 혜란1
,
김 하영2
,
김 진희3
,
김 준태44*
1M.S. Student, Department of Architectural Engineering, Kongju National University
2Ph.D. Student, Department of Energy Systems Engineering, Kongju National Universit
3Research Professor, Green Energy Technology Research Center, Kongju National University
4Professor, Department of Green Smart Architectural Engineering/Department of Energy Systems Engineering (Graduate School), Kongju National University
1국립공주대학교 건축공학과, 석사과정
2국립공주대학교 에너지시스템공학과, 박사과정
3국립공주대학교 그린에너지기술연구소, 연구교수
4국립공주대학교 그린스마트건축공학과/에너지시스템공학과(대학원), 교수
*Corresponding Author
30 June 2025. pp. 61-69
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Abstract

The government plans to apply a mandatory zero-energy building (ZEB) certification policy to public and private buildings beginning in 2025. Air-based solar collectors use air as the heat transfer medium and are classified into glazed and unglazed types. The glazed air-based solar collector has a higher thermal efficiency and reduced sensitivity to external environmental conditions compared with the unglazed type. A glazed air-based solar collector consisting of a glass panel, an absorber plate, insulation, and airflow design influenced by the inlet and absorber plate shape plays a key role in thermal performance. In particular, uniform airflow inside the collector ensures efficient heat transfer and enhances thermal efficiency. Therefore, achieving uniform airflow distribution is essential for improving the thermal performance of air-based solar collectors. In this study, the thermal efficiency of a glazed perforated solar collector was analyzed using different air inflow methods. Outdoor experiments were conducted according to ISO 9806 using closed-loop and open-to-ambient test circuits. Three air inflow methods were tested to evaluate their impact on thermal efficiency. The results showed that at a maximum airflow rate of 150 m3/h, the collector’s efficiency reached 61.01%, which was 35.16% higher than the base case.

Keywords
Air-type solar collector
Glazed perforated solar collector
Thermal performance test
Thermal efficiency
Outdoor testing
키워드
공기식 태양열 집열기
유창형 타공 태양열 집열기
열성능 평가
열효율
옥외성능평가
References
1

Korea Ministry of Land, Infrastructure and Transport, Notification 2019-179, Regulations on Zero Energy Building, Sejong, Republic of Korea, 2019.

2

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3

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Yu, J. S., Lee, K. S., Kim, J. H., and Kim, J. T., Study on Electrical and Thermal Performance Assessment of an Air-Type PVT Collecotr with Perforated Baffle, The Korea Solar Energy Society, Vol. 41, No. 1, pp. 25-34, 2021, https://doi.org/10.7836/kses.2021.41.1.025.

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Farhan, A. A. and Sahi, H. A., Energy Analysis of Solar Collector With perforated Absorber Plate, Journal of Engineering, Vol. 23, No. 9, pp. 89-102, 2017.

10.31026/j.eng.2017.09.07
Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 45
  • No :3
  • Pages :61-69
  • Received Date : 2025-03-31
  • Revised Date : 2025-04-20
  • Accepted Date : 2025-05-09
  • DOI :https://doi.org/10.7836/kses.2025.45.3.061
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