| Title |
Enhancement of Stratification for Solar Water Storage Tank with Spiral Jacket and Coil(Part 2 Simulation) |
| Authors |
이성훈(Seong Hoon Lee) ; 손효석(Hyo Seok Son) ; 홍희기(Hiki Hong) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2014.26.1.008 |
| Keywords |
설비형 태양열 시스템 ; 나선재킷 축열조 ; 성층화집열효율 Active solar heat system ; Spiral-jacketed storage tank ; Stratification ; Collector efficiency |
| Abstract |
We have performed experiments to enhance the stratification in a storage tank in order to raise the collector efficiency and solar fraction in solar thermal systems. The storage tank with a spiral jacket in the side wall has a scroll-shaped heat exchanger coil added to the upper part. The performance was compared between only the side and upper-side heating part through simulation using TRNSYS under the same weather conditions and initial conditions. As a result, the upper-side heating has a 4.2% advantage in solar fraction, but almost no increase in collector efficiency. |