Prompuge W, Sirisamphanwong C. Technical Performance for Heat Storage of Solar Cooker using Vegetable Oil as Working Fluid. J. Renew. Energy Smart Grid Technol. [internet]. 2018 May 1 [cited 2025 Dec. 11];13(1). available from: https://ph01.tci-thaijo.org/index.php/RAST/article/view/75485