Preliminary design of an osmotic-type salinity-gradient energy converter: Phase II

Technical Report · Tue Jun 01 00:00:00 EDT 1982

OSTI ID:6667779

The preliminary design is presented 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% potassium alum solution on one side and 52% potassium alum solution on the other side of the semipermeable membrane. Included are: 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. 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: 6667779
• Report Number(s): DOE/ET/21001-1; ON: DE82018379
• Resource Relation: Other Information: Portions of document illegible
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SALINITY GRADIENT POWER PLANTS
DESIGN
CLIMATES
COST
ELECTRIC GENERATORS
ENGINEERING DRAWINGS
LAND USE
OSMOSIS
PERMITS
SITE SELECTION
SITE SURVEYS
SOLAR PONDS
SPECIFICATIONS
SWITCHING CIRCUITS
TURBINES
ADMINISTRATIVE PROCEDURES
DIAGRAMS
DIFFUSION
ELECTRONIC CIRCUITS
EQUIPMENT
MACHINERY
PONDS
POWER PLANTS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR POWER PLANTS
SURFACE WATERS
TURBOMACHINERY
140800* - Solar Energy- Ocean Energy Systems
141000 - Solar Collectors & Concentrators