Deep Direct-Use for Industrial Applications: Producing Chilled Water for Gas-Turbine Inlet Cooling

Conference · Wed Oct 17 04:00:00 EDT 2018

OSTI ID:1494063

Turchi, Craig S ^[1]; McTigue, Joshua Dominic P ^[1]; Akar, Sertac ^[1]; Beckers, Koenraad J ^[1]; Tillman, Tom ^[2]

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1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
2. TAS Energy

Direct use of deep, low-temperature geothermal resources is underutilized due to challenging project economics associated with developing a deep geothermal resource for what are historically small-scale, variable-demand projects. This project assesses the feasibility of geothermal energy integration in natural-gas combined cycle power stations in the Sabine Uplift and Gulf Coast regions of Texas. The low-grade geothermal resource is tapped to drive absorption chillers for production of chilled water at 5-10 degrees C (41-50 degrees F). This chilled water is stockpiled and dispatched to provide turbine inlet cooling (TIC) at the inlet to the compressor of a natural-gas combined cycle power plant, thereby boosting power production during periods of high temperature and high-power demand. This presentation focuses on the system design related to geothermal well-site selection (proximity vs. resource quality), absorption chiller size and location, chilled-water storage capacity, and dispatch logic to realize the maximum financial benefit.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (EE-4G)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1494063
• Report Number(s): NREL/CP-5500-71914
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
DDU
absorption cooling
deep direct-use
industrial
turbine inlet cooling