Organic Working Fluid Based Binary Cycle Design for Sustainable Geothermal Power Generation
Deny Ismail Pellu (a*), Nanse Henny Pattiasina (b), Valentyn B. Hattu (c), Hardi Maifra Kurniadi (d)

a) b) c) Mechanical Engineering, Politeknik Negeri Ambon
Ambon, Indonesia
*denypellu21[at]gmail.com
d) Master of Petroleum Engineering, Universitas Trisakti
Jakarta, Indonesia

Abstract

Geothermal energy is a renewable energy source that is sustainable and environmentally friendly to meet the increasing need for electrical energy. This research aims to conduct a technical analysis of geothermal energy utilization in Tulehu using binary cycle technology. Binary cycle technology was chosen because Tulehu geothermal fluid production has low temperatures and little steam so it cannot use conventional PLTP. This research uses a quantitative approach and utilizes Aspen HYSYS thermodynamic simulation software to analyze binary cycles using i-pentane, i-butane, and n-butane working fluids. The research results show that the net power value produced by each working fluid is- 2,225.43 kW, 1,426.36 kW, and 1,756.93 kW.

Keywords: Geothermal energy, PLTP Tulehu, binary cycle, renewable energy

Topic: Renewable energy