Rancang Bangun Thermal Energy Storage Menggunakan Pasir Silika untuk Pemanas Air Skala Rumah Tangga

Abstract

The increasing demand for sustainable and renewable energy sources has generated greater interest in the development of efficient energy storage systems. Thermal Energy Storage (TES) emerges as a promising solution in thermal energy storage technology. This method of thermal energy storage allows excess heat energy to be stored and used for hours, days, or even months. TES can utilize clean energy as a source of heat to be stored. The objective of this design is to determine the construction of thermal energy storage using silica sand as a heat storage medium to heat water on a household scale, utilizing solar energy as its heat source. In the design of a household-scale TES water heater, it requires a heat of 6,044 kJ and a heater power of 2000 watts. The amount of silica sand needed is 221 kg with a tank volume of 0.145 m3, having a diameter (D) of 0.5 m and height (h) of 0.75 m. The tank is lined with 5 cm thick glasswool as a thermal insulator to slow down the heat release process to the environment. The water passage pipes use ½-inch pipes, 6 meters in length, formed in a spiral shape to accelerate the water heating process.