Page 298 - Introduction to Petroleum Engineering

286 RESERVOIR PERFORMANCE

Mauna Kea
Crater

Hilo
Hawaii Puna
PGV
Mauna Loa
Crater Kilauea
Rim

Kilauea
Crater

FIgURE 14.12 Puna Geothermal Venture (PGV), Hawaii and the main crater of the active
Kilauea Volcano (after Fanchi and Fanchi, 2016).

Air-cooled
condenser

Generator Turbine
Vaporizer Secondary
fluid
flow
Primary
fluid Preheater
flow
Production Injection
well well

Hot fluid Cooled fluid
FIgURE 14.13 Schematic of an air‐cooled binary geothermal power plant.

refers to the fluid used in the condenser. The production well produces hot fluid from
the geothermal reservoir. The produced fluid is the primary fluid entering the power
plant and a secondary fluid is the working fluid used to generate electricity. The
working fluid is a fluid with a lower boiling point than the primary fluid. Examples
of binary fluids include organic fluids such as isobutane, pentane, or a refrigerant.