ACADSTAFF UGM
| Judul/Title | Thermal Stratification Studies on A Thermosyphon Solar Water Heater Involving Paraffin Wax |
| Penulis/Author | MUHAMMAD NADJIB (1) ; Dr. Ir. Suhanan, DEA. (2); Ir. Joko Waluyo, M.T., Ph.D (3); Ir. Fauzun, S.T., M.T., Ph.D., IPM., ASEAN Eng. (4); Indro Pranoto, Ph.D. (5) |
| Tanggal/Date | 2023 |
| Kata Kunci/Keyword | |
| Abstrak/Abstract | Paraffin wax is applied to a solar water heater (SWH) as a thermal energy storage material due to its high energy density. Several previous studies have shown that integrating water and paraffin wax in the SWH tank can increase the thermal energy storage capacity. However, the thermal stratification of thermosyphon-type SWHs with horizontal tanks has not been explicitly disclosed. This paper investigates the thermal stratification of water inside the SWH tank containing paraffin wax. Paraffin wax was filled into a cylindrical capsule. The capsules were then put into the SWH tank and arranged parallel to the axis of the tank. The experiment was conducted for the duration of the charging process. The solar radiation intensity, the water, and the paraffin wax temperature were recorded. The resulting data was accustomed to graph the evolution of water and paraffin wax temperature. Based on the graph, thermal stratification was formed visually inside the tank. Stratification analysis was conjointly performed with the Richardson number calculation. The calculation shows that the value of Richardson's number is more than one. These results explain that thermal stratification occurs in the SWH tank. The addition of capsules containing paraffin wax can maintain thermal stratification. |
| Level | Internasional |
| Status |