Transactions of the KSME C: Technology and Education (대한기계학회논문집 C: 기술과 교육)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of a New Air Cooling System Utilizing the Stirling Engine for Preventing Solar Cell from Overheating

태양광 모듈의 과열 방지용 공랭형 스털링기관 냉각 시스템 개발

  • Kim, Hyoungeun (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Park, Chanwoo (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Chu, Jinkyung (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Keum, Dongyeop (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Park, Silro (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Kim, Jeongmin (Dept. of Mechanical Automotive Engineering, Andong Nat'l Univ.) ;
  • Kim, Daejin (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
  • Received : 2014.02.28
  • Accepted : 2014.03.27
  • Published : 2014.03.01
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Abstract

In this paper new air-cooling system utilizing Stirling engine was proposed for improving efficiency in solar photovoltaic power generation. The solar cell plate was equipped with semi-circular channel for air flow on the backside. Beta-type Stirling engine was installed on the plate and its flywheel was connected to a motor fan by a transmission belt. A forced convective air flow for heat radiation was generated by the operation of the self-starting Stirling engine. The performance tests for power generation of solar cell with or without the proposed air-cooling system were conducted under halogen lamp. From the experimental results, it was found that decline in output voltage of the solar cell with proposed cooling system was 25% less than that of the solar cell without cooling system.

태양광 모듈의 과열을 방지하여 효율을 향상시키기 위해 스털링기관을 이용한 새로운 공랭식 냉각 시스템을 개발하였다. 베타 타입 스털링기관에 냉각팬을 연결하고 태양광 모듈의 뒷면에 반원형의 에어가이드를 부착함으로써 스털링기관 작동에 의해 발생된 강제대류가 에어가이드를 따라 이동하면서 태양광 모듈의 후면을 냉각하는 방식이다. 할로겐 조명을 활용한 하절기 모사 성능 평가 실험 결과 본 연구를 통해 개발된 새로운 냉각시스템을 적용할 경우 태양광 모듈의 온도가 냉각을 적용하지 않은 경우에 비해 약 $12^{\circ}C$ 낮아지고 출력 전압은 약 25% 향상되었다.

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References

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