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http://dx.doi.org/10.7836/kses.2017.37.1.047

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

Choi, Hwi-Ung (Graduate School of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Kim, Young-Bok (Dept. of Mechanical System Engineering, Pukyong National University)
Yoon, Jung-In (Dept. of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Son, Chang-Hyo (Dept. of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Choi, Kwang-Hwan (Dept. of Refrigeration and Air-conditioning Engineering, Pukyong National University)
Publication Information
Journal of the Korean Solar Energy Society / v.37, no.1, 2017 , pp. 47-57 More about this Journal
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 $43^{\circ}C$ to $60^{\circ}C$ on the $30^{\circ}C$ 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;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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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.   DOI
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.   DOI
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.   DOI
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.   DOI