Preliminary design of an Osmotic-Type Salinity-Gradient Energy Converter: Phase II

Technical Report · Thu Sep 01 00:00:00 EDT 1983

OSTI ID:5540502

This report presents the preliminary design of a 50 kW/sub e/ closed-cycle osmotic pressure power system using a saturated solar pond as the unmixer for the mixed brine with 7.7 percent potassium alum solution on one side and 52 percent potassium alum solution on the other side of the semipermeable membrane. The report includes system description with flow diagram, general arrangement, general pipe routing between equipment drawings and component performance specifications; siting restrictions; environmental considerations; pretreatment; membrane characteristics; preliminary system capital, operating and maintenance costs; and recommendations for further work. It was found that the area requirement for a saturated solar pond is less than one-tenth of that required for a solar evaporation pond as found during Phase I of the study. The pretreatment cost was found to be much less in this case because the system is closed. Finally, the use of a saturated solar pond greatly increases the potential number of sites available for a practical osmotic pressure power system.

• Research Organization: Ebasco Services, Inc., New York (USA)
• DOE Contract Number: AC05-79ET21001
• OSTI ID: 5540502
• Report Number(s): DOE/ET/21001-T2; ON: DE83017556
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SALINITY GRADIENT POWER PLANTS
DESIGN
BRINES
CAPITAL
COST
ENVIRONMENTAL IMPACTS
MEMBRANES
MIXING
OSMOSIS
PIPES
SALTS
SITE SELECTION
SOLAR PONDS
DIFFUSION
EQUIPMENT
PONDS
POWER PLANTS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR POWER PLANTS
SURFACE WATERS
140800* - Solar Energy- Ocean Energy Systems