이중진공관형 태양열 집열기의 연간 집열효율에 관한 연구
A Study on the Annual Storage Efficiency of Concentric Evacuated Tube Solar Energy Collector System
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The Storage efficiency of concentric evacuated tube solar collector is tested for one year from January 1st to December 31st under the real sun condition. The testing equipment is operated continuously for three days without cooling the storage tank. Daily storage efficiency is obtained from dividing stored energy in the storage tank by solar insolation on the solar collector for each day. Daily averaged temperature of the storage tank is lowest in January and highest in August. Monthly averaged storage efficiency is also lowest in November and highest in June. Therefore, it can be said that the storage temperature and the storage efficiency are roughly proportional to outdoor temperature. Furthermore, the daily storage efficiency is reversely proportional to (Ts-Ta)/Ic, where Ts and Ta are daily averaged storage temperature and outdoor temperature from sunrise to sunset, and Ic is total insolation on the solar collector for a day.
Abstract
The Storage efficiency of concentric evacuated tube solar collector is tested for one year from January 1st to December 31st under the real sun condition. The testing equipment is operated continuously for three days without cooling the storage tank. Daily storage efficiency is obtained from dividing stored energy in the storage tank by solar insolation on the solar collector for each day. Daily averaged temperature of the storage tank is lowest in January and highest in August. Monthly averaged storage efficiency is also lowest in November and highest in June. Therefore, it can be said that the storage temperature and the storage efficiency are roughly proportional to outdoor temperature. Furthermore, the daily storage efficiency is reversely proportional to (Ts-Ta)/Ic, where Ts and Ta are daily averaged storage temperature and outdoor temperature from sunrise to sunset, and Ic is total insolation on the solar collector for a day.
참고문헌 (6)
- H.S. Chung, "A Study on the Performance of Two Piping Coiling Heat Exchanger for Solar Heating System", Proceeding of the SAREK (1998), Proceeding of the SAREK
- C.J. Kim, "An Experimental Study on the Heat Transfer Characteristics for a Flat Plate Solar Collector with a Heat Pipe", Transaction of KSME, 17(5), pp.1237~1245 (1993), KSME
- T.Y. Bong, "Thermal P erformance of a Flat-Plate Heat-Pipe Collec tor Array", Solar Energy, 50(6), pp.491~488 (1993)
- E.H. Amer, "Transient Test Methods for Flat-Plate Collect ors: Review and Experimental Evaluation", Solar Energy, 60(5), pp.229~243 (1997)
- S.B. Youn, "A Study on the Standardization of Test Method of Flat-Plate Liquid-Heatin g Solar Collectors", J. of Korean Inderstries Safety, 5(3) (1990), No.3
- K. S. Chang, "Study on the Performance of The Flat-Plate Solar Collect ors, J, of Argricutural Mechanical Engineer' s Society", 2(2) (1977)