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2021 Vol.41, Issue 1 Preview Page

Research Article

Analysis of Heat Transfer Performance According to Installation Conditions of Various Protrusions with Non-uniform Cross-section in Air Space of Air-Type PV/T System

공기식 태양광/열 집열기 내 공기층에서 비균일 단면을 갖는 돌출부 설치 조건에 따른 전열 성능에 관한 분석

Kwang-Am Moon1
,
Hwi-Ung Choi1
,
Young-Bok Kim2
,
Chang-Hyo Son3
,
Jung-In Yoon3
,
Kwang-Hwan Choi3*
문 광암1
,
최 휘웅1
,
김 영복2
,
손 창효3
,
윤 정인3
,
최 광환3*
1Graduate Student, Graduate School of Refrigeration and Air-conditioning Engineering, Pukyong National University
2Professor, Dept. of Mechanical Engineering, Pukyong National University
3Professor, Dept. of Refrigeration and Air-conditioning Engineering, Pukyong National University
1부경대학교 냉동공조공학과, 대학원생
2부경대학교 기계시스템공학과, 교수
3부경대학교 냉동공조공학과, 교수
*Corresponding Author
28 February 2021. pp. 79-92
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Abstract

Air-type photovoltaic/thermal (PV/T) collectors attached to ducts beneath the solar panels are devices that can recover heat while the panel cools. By contrast, water-type PV/T is easily used because the air of an air-type PV/T has a lower heat capacity than water. A number of studies have been conducted on the installation of ribs as a way to increase the heat recovery capacity of air through ducts. In this study, a protrusion with a non-uniform cross-section was selected to increase the contact area of the air side as well as to promote turbulence. A computational fluid dynamics (CFD) analysis was conducted to confirm the heat transfer performance and the characteristics of the pressure drop according to different shape conditions. As a result, the heat transfer performance was improved by 1.3- to 1.9-fold depending on the conditions of the protrusion installation. However, the pressure drops also increased from 2.534- to 4.685-fold. It is therefore necessary to identify those factors of the thermal hydraulic performance that consider both the heat transfer and pressure drop. As a result, the maximum heat-recoverable shape condition achieved the largest performance coefficient value of 1.24 when e/H = 0.16, P/e = 20, and Wp/e = 5.

Keywords
Air-type photovoltaic thermal collector
Protrusion
Computational fluid dynamics
Energy saving
키워드
공기식 태양광/열 집열기
돌출부
전산 유체해석
에너지 절약
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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 : 41
  • No :1
  • Pages :79-92
  • Received Date : 2020-12-29
  • Revised Date : 2021-01-26
  • Accepted Date : 2021-01-26
  • DOI :https://doi.org/10.7836/kses.2021.41.1.079
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