Browse > Article

Verification Experiment and Analysis for 6kW Solar Water Heating System (Part 4 : Comparing Economics and Raising Competitiveness)  

Lee Bong Jin (Graduate School, KyungHee University)
Kang Chaedong (Dept. of Mechanical Engineering, Chonbuk National University)
Lee Sang Ryoul (Leewoos Co., Ltd.)
Hong Hiki (School of Mechanical and Industrial System Engineering, KyungHee University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.17, no.3, 2005 , pp. 232-242 More about this Journal
Abstract
It has been recognized that solar water heating systems are economically inferior to conventional gas water-heaters and boilers using light oil as fuel in spite of having practical possibilities among other alternative energy facilities in Korea. The solar system, however, should be revaluated due to the sharp rise of oil prices recently. We have calculated the energy amount and cost through a series of research projects for the system by experiment and simulation, which lead to analyzing reliable life cycle costs. For the economic analysis, the gas water-heater and light oil boiler were taken as base cases while the solar systems implemented with these facilities were compared as alternatives. As a result, the solar system using the light oil as an auxiliary fuel surpassed the light oil boiler in economics. And a $50\%$ government subsidy for the initial cost is needed to maintain competitiveness with the gas hot-water heater. With this support, the simple payback period of the system can approach 12.8 years under $20\%$ additional curtailment of expenditure.
Keywords
Solar thermal energy; Water heating system; LCC; SPB;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kim, J. H., Choi, B. S. and Hong, H., 2005, Experimental Verification for a spiral-jacketed storage tank applied to solar thermal system, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 17, No. 4, to be printed
2 Kim, J. H., Park, Y. W., Lee, B. J., Kim, S. S. and Hong. H., 2003, Economic analysis for solar water heating system, Proceedings of the SAREK Summer Annual Conference, pp. 1080-1085
3 Kim, J. H., Kim, S. S., Choi, B. S. and Hong, H., 2004, Verification experiment and analysis for 6kW solar water heating system (part 1 : verification experiment), Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 16, No. 2, pp. 128-134
4 Fuller, S. K. and Petersen, S. R., 1995, Life-Cycle Costing Manual for the Federal Energy Management Program, NIST
5 Choi, B. S., Lee, B. J., Kang, C. and Hong, H., 2004, Verification experiment and analysis for 6kW solar water heating system (part 3 : optimum design and economic evaluation), Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 17, No. 1, pp. 16-24
6 Kim, S. J.. Hwang, Y. Y. and Kang Y. H., 2003, The study on the activation policy of solar energy, Korean Solar Energy Society, The Magazine of the Society of Solar Energy of Korea, Vol. 2, No. 2, pp. 10-15
7 Choi, C. S., 2003, The present using situation and desired future directions of solar energy, Korean Solar Energy Society, The Magazine of the Society of Solar Energy of Korea, Vol. 2, No. 2, pp. 4-9
8 Choi, B. S., Kim, J. H., Kang, Y. T. and Hong, H., 2004, Verification experiment and analysis for 6kW solar water heating system (part 2 : modelling and simulation), Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 16, No. 6, pp. 556-565