| Title |
CFD Analysis for Spiral-Jacketed Thermal Storage Tank in Solar Heating Systems |
| Authors |
남진현(Jin Hyun Nam) ; 김민철(Min Cheol Kim) ; 김찬중(Charn-Jung Kim) ; 홍희기(Hiki Hong) |
| Keywords |
태양열 에너지 ; 축열조 ; 나선재킷 ; 전산유체역학 Solar energy ; Thermal storage tank ; Spiral-jacket ; CFD |
| Abstract |
Spiral-jacketed thermal storage tanks can greatly simplify solar heating systems while maintaining the thermal performance at a similar level as conventional systems with an external heat exchanger. Proper design of the spiral-jacket flow path is essential to make the most of solar energy, and thus to maximize the thermal performance. In the present work, computational fluid dynamics (CFD) analysis was carried out for a spiral-jacketed storage tank installed in a solar heating demonstration system. The results of the CFD analysis showed a good agreement with experimentally determined thermal performance indices such as the acquired heat, collector efficiency, and mixed temperature in the storage tank. This verified CFD modelling approach can be a useful design tool in optimizing the shape of spiral -jacket flow path and the flow rate of circulating fluid for better performance. |