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Research Article

Experimental Study for Estimation of Air Heating Performance and Improvement of Thermal Performance of Hybrid Solar Air-water Heater

태양열 공기-물 가열기의 공기 가열 성능 평가 및 열적 성능 개선을 위한 실험적 연구

Hwi-Ung Choi1
,
Young-Bok Kim2
,
Jung-In Yoon3
,
Chang-Hyo Son3
,
Kwang-Hwan Choi 3*
최 휘웅1
,
김 영복2
,
윤 정인3
,
손 창효3
,
최 광한3*
1Graduate School of Refrigeration and Air-conditioning Engineering, Pukyong National University
2Dept. of Mechanical System Engineering, Pukyong National University
3Dept. of Refrigeration and Air-conditioning Engineering, Pukyong National University
1부경대학교 냉동공조공학과 대학원
2부경대학교 기계시스템공학과
3부경대학교 냉동공조공학과
*교신저자. *Corresponding Author. 
28 February 2017. pp. 47-57
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Abstract

Solar energy is one of the important renewable energy resources. It can be used for air heating, hot water supply, heat source of desiccant cooling system and so on. And many researches for enhancing efficiency have been conducted because of these various uses of solar thermal energy. This study was performed to investigate the air heating performance of hybrid solar air-water heater that can heat air and liquid respectively or simultaneously and finding method for improving thermal performance of this collector. This collector has both liquid pipe and air channel different with the traditional solar water and air heater. Fins were installed in the air channel for enhancing the air heating performance of collector. Also air inlet & outlet temperature, ambient temperature and solar collector’s inner part temperature were confirmed with different air velocity on similar solar irradiance. As a result, temperature of heated air was shown about 43°C to 60°C on the 30°C of ambient temperature and thermal efficiency of solar collector was shown 28% to 73% with respect to air velocity. Also, possibility of improvement of thermal performance of this collector could be ascertained from the heat transfer coefficient calculated from this experiment. Thus, it is considered that the research for finding optimal structure of hybrid solar air-water heater for enhancing thermal performance might be needed to conduct as further study based on the method for improving air heating performance confirmed in this study.

Keywords
Solar thermal system
Solar air-water heater
Solar air heater
Desiccant cooling system
Energy saving

키워드
태양열 시스템
태양열 공기-물 가열기
태양열 공기 가열기
제습냉방 시스템
에너지 절감
References
1
Fatkhur, R., Hong, B. P., You, J. K., Yoon, J. I., and Choi, K. H., An Experimental Study on the Characteristic of the Hot Water-Air Heating Generating System with a Solar Collector, Proceedings of the KSES 2012 Spring Annual Conference, pp. 360-363, 2012.
2
Choi, K. H., Yoon, J. I., Son, C. H., Choi, H. U., and Kim, B. A., Experimental Study for Thermal Performance of Hybrid Air-Water Heater Using Solar Energy during Heating Medium Working Simultaneously, Journal of the Korean Solar Energy Society, Vol. 34, No. 3, pp. 115-121, 2014.
3
Choi, H. U., Yoon, J. I., Son, C. H., and Choi, K. H., Performance Estimation of Hybrid Solar Air-Water Heater on Single Working of Heating Medium, Journal of the Korean Solar Energy Society, Vol. 34, No. 6, pp. 49-56, 2014.
4
Choi, H. U., Rokhman, F., Yoon, J. I., Son, C. H., and Choi, K. H., A Study on Thermal Storage Performance and Characteristics of Daily Operation of a Hybrid Soalr Air-Water Heater, Journal of the Korean Solar Energy Society, Vol. 35, No. 3, pp. 73-79, 2015.
5
Kim, J. R., Choi, K. H., Yoon, J. I., Kim, J. D., and Woo, J. S., Research on the Performance of Regenerator using Hot Air from Air Heating Solar Collector(1st paper: On the Effect of Hot Air Temperature to Regeneration Rate), Proceedings of the KSES Autumn Annual Conference, pp. 18-26, 2001.
6
Kim, B. C., Choi, K. H., Kum, J. S., Yoon, J. I. and Chung, Y. H., Research on the Performance of Regenerator using Hot Air From air Heating Solar Collector(2nd paper: On the Analysis of Source Effect by Experimental Desing), Proceedings of the KSES Autumn Annual Conference, pp. 27-32, 2001.
7
Kim, D. E., Choi, K. H., Yoon, J. I., Kin, Y. J., and Kim, B. C., Optimum Operating Condition of Regenerator Using Air Heating Solar Collector, Proceedings of the KSES Spring Annual Conference, pp. 102-107, 2002.
8
Choi, H. U., Hong, B. P., Yoon, J. I., Son, C. H,. and Choi, K. H., Research on Thermal Performance by Different Fins in a Solar Air Heater, Journal of the Korean Solar Energy Society, Vol. 33, No. 6, pp. 85-91, 2013.
Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 37
  • No :1
  • Pages :47-57
  • Received Date : 2016-12-09
  • Revised Date : 2017-02-09
  • Accepted Date : 2017-02-10
  • DOI :https://doi.org/10.7836/kses.2017.37.1.047
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