Accession Number : ADD005805

Title :   Mass Transport Heat Exchanger Method and Apparatus for Use in Ocean Thermal Energy Exchange Power Plants.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Naef,Frederick E

Report Date : 08 Aug 1978

Pagination or Media Count : 6

Abstract : Ocean thermal energy conversion (OTEC) uses a fluid, such as ammonia, heated by high-temperature surface water to provide a turbine-driving working gas. To condense the gas for re-use, a slurry of phase-transformation particles and cold ambient sea water is mixed in a deeply-submerged tank and delivered to a surface tank essentially at the cold sub-surface temperature. Condensing of the working gas is performed at the ocean surface level by exposure to the cold slurry temperature. Particle phase-transformation, which occurs at a temperature between that of the cold sub-surface water and the reject temperature of the heat-exchanger, maintans a surface tank temperature at about the sub-surface water. (Author)

Descriptors :   *Patents, *Power supplies, *Energy conversion, *Heat exchangers, Ocean environments, Ammonia, Surface waves, Gases, Sea water, Phase transformations

Subject Categories : Non-electrical Energy Conversion
      Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE