TEKANAN FLASHING OPTIMAL PADA PEMBANGKIT LISTRIK TENAGA PANAS BUMI SISTEM DOUBLE-FLASH

Rafif Tri Adi Baihaqi; Hensen P. K. Sinulingga; Muhamad Ridwan Hamdani

doi:10.21009/03.SNF2017.02.ERE.01

Authors

Rafif Tri Adi Baihaqi Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran
Hensen P. K. Sinulingga Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran
Muhamad Ridwan Hamdani Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Padjadjaran

DOI:

https://doi.org/10.21009/03.SNF2017.02.ERE.01

Abstract

Geothermal resources in Indonesia are hydrothermal system dominated by water, with characteristic about 20% steam and 80% water. The type of power plant in Indonesia currently used to utilize the source of water dominance is a single-flash system. Brine results from this flashing system still have a high temperature so it can still be used as a new energy source, which uses a double-flash system. This research makes a model of geothermal power plant double-flash system to utilize brine results from flashing so that obtained bigger power. The purpose of this research is to know the optimal flashing pressure in a double-flash geothermal power plant. In this research, the variation of pressure change used was 4 bar, 5 bar, 6 bar, 7 bar, 8 bar, and 9 bar. Based on the research results, it can be seen that maximum turbine power can be generated when the pressure change (ÃŽâ€P) of flashing is at 7 bar which generate power 9,575 MW with efficiency 82,68%.

Keywords: brine, flashing, single-flash, double-flash, pressure change