| Title | Opportunities for Electricity Generation with Binary Cycle Power Plants in Lumut Balai Geothermal Area |
|---|---|
| Authors | D.S. Gunawan |
| Year | 2020 |
| Conference | New Zealand Geothermal Workshop |
| Keywords | Lumut Balai, Brine, Binary Cycle |
| Abstract | Lumut Balai Geothermal Field is a working area managed by Pertamina Geothermal Energy (PGE) in South Sumatra Province, Indonesia. This field has generated 55 MWe of electricity to the grid on the Sumatra Island after Lumut Balai Geothermal Power Plant (GPP) Unit-1 achieve the commercial operation date in the first quarter of 2020. Lumut Balai GPP Unit-2 EPCC project will follow with 55 MWe capacity in the future. The two GPP units are turbine condensing power plants. Lumut Balai Geothermal Field is a two phase field with water predominance (dryness of around 20%) where this two phase fluid flow into the separator to separate dry steam and hot brine. Dry steam is used to turn turbines and generators to produce electricity and hot brine is injected into the reservoir through a reinjection well. The injected hot brine still has high heat potential and can be used to generate electricity using a binary cycle power plant. This paper tries to find out how much electricity is generated from the binary cycle power plant by utilizing hot brine, which may be a binary cycle that can be used as a way to increase the generation capacity in Lumut Balai Field in the future. |