ANALISIS PEMBANGKIT SURYA TERMAL DENGAN FLUIDA KERJA HELIUM

• Main Author: Alif Mi'raj Jabbar, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/47019
• Institution: Institut Teknologi Bandung

Solar thermal power or concentration solar power (CSP) plants work by utilizing focused sunlight to heat the working fluid and produce electricity. High thermal cycle efficiency is needed so that sunlight can be utilized as well as possible. Using helium as working fluid will allow the use of high maximum cycle temperatures, resulting in high thermal efficiency. The combination cycle of helium regenerative Brayton with organic Rankine cycle using ammonia as organic cycle working fluid produces the highest thermal efficiency of 45.66%. The use of organic Rankine cycles allows for the addition of heat storage. At an organic Rankine cycle output of 2 MW for 16 hours, for ammonia fluid requires the least amount of heat storage, which is 680 tons. The generating cycle model with helium working fluid used has been verified with a relative error of 5,8×10-4 for the simple Brayton cycle and 7,48×10-5 for the regenerative Brayton cycle. Using direct normal irradiance (DNI) value of 614 W/m2, with a location in the village of Kauniki, Takari, East Nusa Tenggara, the layout of the heliostat mirror for input thermal power of 28.83 MWt requires 1,014 mirrors. The annual efficiency of the heliostat mirror was obtained in the range of 64.3 to 76.8%.