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화학적 환원법으로 제조된 은나노유체를 사용한 직접흡수식 태양열 집열기의 효율
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | 한국태양에너지학회 논문집 = Journal of the Korean Solar Energy Society |
| ISSN | 1598-6411, |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | 이승현,박용준,최태종,장석필 |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2014-01-01 |
| 초록 | In this paper, the water-based Ag nanofluids are synthesized by the chemical reduction method and their extinction coefficients are measured by an in-house developed measurement device. The Ag nanofluids are manufactured by the chemical reduction method with the mixing of silver nitrate ( $AgNO_3$ ) and sodium borohydride ( $NaBH_4$ ) in an aqueous solution of polyvinyl pyrrolidone (PVP). The extinction coefficients of Ag nanofluids are measured by means of the in-house developed apparatus at a wavelength of 632.8nm according to the particle volume fractions. The results show that the extinction coefficient of water-based Ag nanofluids increases with the increase of nanoparticle concentrations. Finally, the temperature field and efficiency of direct absorption solar collector (DASC) are analytically estimated based on the measured extinction coefficient of water-based Ag nanofluids. The results indicate that the direct absorption solar collectors using nanofluids have the feasibility to improve the efficiency of conventional flat-plate solar collectors without using an absorber plate. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201433552234086 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
|---|---|
| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | 화학적 환원법,물-기반 은나노유체,흡광계수,직접흡수식 태양열 집열기,집열기 효율,집열기 온도 분포,Chemical reduction method,Water-based Ag nanofluids,Extinction coefficient,Direct absorption solar collector,Collector efficiency,Temperature field of solar collector |