| Title |
Enhancement of Stratification for Solar Water Storage Tank with Spiral Jacket and Coil(Part 1：Verification Experiment) |
| Authors |
권재욱(Jae-Wook Kwon) ; 홍희기(Hiki Hong) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.4.336 |
| Keywords |
설비형 태양열 시스템 ; 나선재킷 축열조 ; 성층화 ; 집열효율 Active solar heat system ; Spiral-jacketed storage tank ; Stratification ; Collector efficiency |
| Abstract |
Large-scale active solar heat systems are generally using heat exchanger between collector and storage tank loops to prevent damage by freezing. It is difficult to maintain stratification in a storage tank in the system owing to greater flow rate enhancing heat transfer. In the previous study, we introduced a spiral-jacketed storage tank and obtained good results to keep system performance of general level without better stratification. We added a scroll-shaped heat exchanger coil on the upper part in the spiral-jacketed storage tank. As a result of the experiment, it was verified that degree of stratification of the new type storage tank is higher than that of the previous one with a possibility of better collector efficiency and solar fraction. |