Cooling System Cost & Performance Models for Economic sCO2 Plant Optimization with Respect to Cold sCO2 Temperature (Presentation)
- KeyLogic
- NETL
Due to the near-ambient CO2 critical temperature of 31 °C, cooling system performance significantly affects supercritical CO2 (sCO2) power cycle efficiency. Cooling systems tailored to sCO2 cycle operation are thus necessary to realize the efficiency benefits that are possible through reductions in the cold cycle temperature, which reduces cycle compression power requirements. In this presentation, cost and performance spreadsheet models for 4 different types of sCO2 cooling systems are detailed, covering heat and mass transfer modeling, cost scaling algorithms and model validation. The cooling system models can be used by cycle designers to optimize the cooling system operating parameters and cold sCO2 temperature to minimize the overall cost of electricity (COE) for a given plant location. Preliminary economic optimization using these models shows that cooling system optimization improves indirect sCO2 plant efficiency by 3-4 percentage points, and can reduce COE by up to 8%.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Organization:
- FE
- DOE Contract Number:
- DE-FE0004001
- OSTI ID:
- 1569640
- Report Number(s):
- NETL-PUB-22260
- Resource Relation:
- Conference: 3rd European Supercritical CO2 Conference Paris, France 9/19/2019 - 9/20/2019
- Country of Publication:
- United States
- Language:
- English
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