OTEC News - Clean Energy, Water and Food |
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The news source for Ocean Thermal Energy Conversion (OTEC)
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Wednesday, September 07, 2005
Taiwan professor argues for OTEC
 Liang Nai-kuang, professor in the Institute of Oceanography at National Taiwan University argues for OTEC use [cached] in Taipei Times.
Hawaii aquaculture business grows
 Pacific Business News reports that the value of Hawaii-grown aquaculture/mariculture now exceeds $28 million a year [cached]. Algae accounted for 45 percent of the value and amounting to $12.6 million. A big part of this happens at NELHA
Danish researcher crack hydrogen storage?
 Danish researchers at the Technical University of Denmark may have taken an important step towards hydrogen based transport systems. In a news article they say that they store the hydrogen as ammonia absorbed in sea-salt tablets [cached]. "Within the tablet, hydrogen is stored as long as desired, and when hydrogen is needed, ammonia is released through a catalyst that decomposes it back to free hydrogen. When the tablet is empty, you merely give it a “shot” of ammonia and it is ready for use again." They are working on commercializing the technology, and they claim to already meet the US DOE 2015 goals for volume and energy density. What is particularly interesting here is that one of the possible outputs from an OTEC plant is just that, ammonia (PDF). And ammonia is easy to transport in comparison to hydrogen. The question is whether this method of producing ammonia from solar energy will be economically competitive or not. |
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