Ocean thermal energy conversion (OTEC) biofouling and corrosion experiment (1977), St. Croix, U. S. Virgin Islands. Biofouling and site characterization studies. Final report

Technical Report · Wed Feb 08 04:00:00 EST 1978

OSTI ID:6417965

Aftring, R P; Capone, D G; Duguay, L; Fell, J W; Master, I M; Taylor, B F

Site characterization and biofouling studies were conducted at a site about seven miles north of St. Croix, U.S. Virgin Islands, during July to September, 1977. The devices basically consisted of aluminum pipes (8' long x 1'' ID) through which seawater flowed at rates of 3 or 6 ft sec/sup -1/. The units were mounted on the deck of a barge, moored in water of depth about 4000 m, and seawater for the experiment was obtained from a depth of about 20 m ATP and carbon and nitrogen contents, microbial plate counts (bacteria, yeasts, filamentous fungi) were employed as measures of biofouling films within the aluminum pipes. Chlorophyll a and phaeo-pigment determinations indicated that viable and dead photosynthetic microbes were insignificant in the fouling films. No major differences in biofouling were observed between the two seawater flow rates, either in the CMU or RSMAS pipes. The general conclusion from the site characterization work is that the nutrient and microbial loads in the surface waters at the St. Croix site are low. The site is therefore suitable for OTEC, beacuse biofouling should be minimal, although this conclusion is qualified by the need for seasonal and longer-term evaluation.

• Research Organization: Miami Univ., FL (USA). Rosenstiel School of Marine and Atmospheric Sciences
• OSTI ID: 6417965
• Report Number(s): PNL-2739(Pt.3)
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
ALUMINIUM
ATP
BACTERIA
BARGES
BIOLOGICAL FOULING
CARBON
CARBOXYLIC ACIDS
CHLOROPHYLL
CONVERSION
CRYOGENIC FLUIDS
ELEMENTS
ENERGY CONVERSION
FLUIDS
FOULING
FUNGI
HEAT EXCHANGERS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
METALS
MICROORGANISMS
NITROGEN
NONMETALS
NUCLEOTIDES
OCEAN THERMAL ENERGY CONVERSION
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHYTOCHROMES
PIGMENTS
PIPES
PLANTS
PORPHYRINS
SEAWATER
SITE SELECTION
SOLAR ENERGY CONVERSION
WATER
YEASTS