Dr. Paul Curto, former Chief Technologist with NASA,"OTEC is a true triple threat against global warming. It is the only technology that acts to directly reduce the temperature of the ocean (it was estimated one degree Fahrenheit reduction every twenty years for 10,000 250 MWe plants in '77)"
With a slightly different design, using an ammonia heat pipe instead of a cold water pipe, proposed by Jim Baird and Dominic Michaelis (British Patent No. GB 2395754), no water from the bottom is released into the upper strata of the ocean, trapping all the CO2 deep beneath the thermocline. Little pumping energy is used to circulate the ocean water, simply enough to pump warm surface water to flow over the evaporator end of the heat pipe. If the condensing end of the heat pipe is exposed to a thousand feet or more of near freezing temperatures below the thermocline, no cold water pumping is required. The parasitic losses are cut in half. The costs for the cold water pipe are eliminated, along with the cold water return pipe and condenser pumps, the cleaning system for the condenser, and the overall plant efficiency approaches 85% of Carnot vs. about 70% with a cold water pipe. The parasitic losses could be reduced as much as 50% and the complexity, mass (and cost) of the system reduced by at least 30%. The vast reduction in operating costs and environmental impacts would be worth investigation alone.
Melvin Pruiett of Los Alamos also has patent application for heat pipe design as does Dr. James Lau, Phd Physics.
Re Hurricane Suppression
Florida Atlantic University and University of Hawaii
Ray Schmitt of the Woods Hole Oceanographic institute