Experiments on oxygen desorption from surface warm seawater under open-cycle ocean thermal energy conversion

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Journal of Solar Energy Engineering; (United States)

DOI:https://doi.org/10.1115/1.2930013· OSTI ID:7046619

Pesaran, A A ^[1]

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1. Solar Energy Research Inst., Golden, CO (United States)

This paper presents the results of scoping deaeration experiments conducted with warm surface seawater under open-cycle ocean thermal energy conversion (OC-OTEC) conditions. Concentrations of dissolved oxygen in seawater at three locations (in the supply water, water leaving the predeaerator, and discharge water from an evaporator) were measured and used to estimate oxygen desorption levels. The results suggest that 7 percent to 60 percent of the dissolved oxygen in the supply water was desorbed from seawater in the predeaerator for pressures ranging from 35 to 9 kPa. Bubble injection in the upcomer increased the oxygen desorption rate by 20 percent to 60 percent. The data also indicated that at typical OC-OTEC evaporator pressures, when flash evaporation in the evaporator occurred, 75 percent to 95 percent of the dissolved oxygen was desorbed overall from the warm seawater. The results were used to find the impact of a single-stage predeaeration scheme on the power to remove noncondensable gases in an OC-OTEC plant.

• OSTI ID: 7046619
• Journal Information: Journal of Solar Energy Engineering; (United States), Journal Name: Journal of Solar Energy Engineering; (United States) Vol. 114:4; ISSN JSEEDO; ISSN 0199-6231
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
CONVERSION
DATA
DESORPTION
DISSOLVED GASES
EFFICIENCY
ELEMENTS
ENERGY CONVERSION
ENERGY EFFICIENCY
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN COMPOUNDS
INFORMATION
NONMETALS
NUMERICAL DATA
OCEAN THERMAL ENERGY CONVERSION
OCEAN THERMAL POWER PLANTS
OPEN-CYCLE SYSTEMS
OXYGEN
OXYGEN COMPOUNDS
POWER PLANTS
SEAWATER
SOLAR ENERGY CONVERSION
SOLAR POWER PLANTS
SOLUTES
SORPTION
THERMAL POWER PLANTS
WATER