100 MWe OTEC alternate power systems. Volume 1. Technical details. Final report

Technical Report · Mon Mar 05 00:00:00 EST 1979

DOI:https://doi.org/10.2172/6666444· OSTI ID:6666444

The conceptual designs of the OTEC Open Cycle Alternate Power Systems developed by Westinghouse Electric Corporation are described. Component design and cost routines were devised and integrated into a total power system and platform computer optimization code. The highest level of effort was given to the open cycle with surface condenser fresh water production option, followed by the open cycle with direct condenser option and the hybrid cycle power system. An innovative and realistic 100 MWe open cycle net power module and integrated platform emerged as a most cost-effective solution. This 100 MWe power cycle utilizes a flash evaporator, vertical turbine and tubed condenser with dearation designed to take place as part of the condenser venting process, was determined most cost effective. A barometric condenser design was also investigated and has been shown to be worthy of further study. The hybrid cycle using water vapor flashed from a warm seawater flow as a heat source for evaporating anhydrous ammonia in a closed cycle ammonia power loop, was given sufficient attention to determine that it does not appear to be economically attractive. The development of the single large turbine stage, rather than a multiplicity of small turbines, provided significant improvements in reliability and cost. Further, integrating the power system, hull and cold water pipe into a cost optimized platform aided in the solution of the dynamic problem posed by the platform response to sea states, such that the platform motion does not withdraw the warm seawater inlet from the ocean where it would draw air and stall the power system. Design and performance details are presented.

• Research Organization: Westinghouse Electric Corp., Lester, PA (USA). Power Generation Divs.
• DOE Contract Number: EG-77-C-05-1473
• OSTI ID: 6666444
• Report Number(s): ORO-1473-T1(Vol.1)
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
OCEAN THERMAL POWER PLANTS
DESIGN
SYSTEMS ANALYSIS
THERMODYNAMIC CYCLES
AMMONIA
COMPUTERIZED SIMULATION
COST
DIFFUSERS
DIRECT CONTACT HEAT EXCHANGERS
EVAPORATORS
FLASHING
FLUID FLOW
HEAT EXCHANGERS
HYBRID SYSTEMS
MATHEMATICAL MODELS
MECHANICAL STRUCTURES
NITROGEN
OFFSHORE PLATFORMS
OPEN-CYCLE SYSTEMS
OPTIMIZATION
OXYGEN
PERFORMANCE
PIPES
POWER CONDITIONING CIRCUITS
POWER RANGE 10-100 MW
POWER SYSTEMS
SEAWATER
SENSITIVITY ANALYSIS
SOLUBILITY
SORPTIVE PROPERTIES
STEAM GENERATION
SUPPORTS
TURBINE BLADES
TURBINES
VAPOR CONDENSERS
CONDENSERS
ELECTRONIC CIRCUITS
ELEMENTS
ENERGY SYSTEMS
EVAPORATION
HYDRIDES
HYDROGEN COMPOUNDS
MACHINERY
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POWER PLANTS
SIMULATION
SOLAR POWER PLANTS
SURFACE PROPERTIES
THERMAL POWER PLANTS
TURBOMACHINERY
WATER
140800* - Solar Energy- Ocean Energy Systems