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Seawater Air Conditioning (SWAC) and Ocean Thermal Energy Conversion (OTEC) for Sustainable Solutions

Explore the innovative use of deep, cold, nutrient-rich seawater in SWAC and OTEC technologies, offering green solutions with global implications. Learn about the potential benefits, unintended consequences, and impact on environmental sustainability.

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Seawater Air Conditioning (SWAC) and Ocean Thermal Energy Conversion (OTEC) for Sustainable Solutions

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  1. NUTRIENTS + LIGHT= PHYTOPLANKTON

  2. MARE LIBERUM: LOCAL ISSUES WITH GLOBAL IMPLICATIONS Seawater Air Conditioning (SWAC): use deep, cold (nutrient- and CO2-rich) seawater in lieu of heat pumps Ocean Thermal Energy Conversion (OTEC): use deep, cold (nutrient- and CO2-rich) seawater to generate electricity Green solutions  “green” ocean?

  3. SWAC and OTEC Heat exchange medium in air conditioning or energy production applications CO2-rich, N&P-rich waste Are there any unintended environmental consequences??? Cold DSW

  4. Nature, 6 Oct 2011

  5. BIOMASS PRODUCTION

  6. Pump deep sea water (SWAC/OTEC) Remove/Recover P by “MAGIC” No P, no bloom, no starvation, no wars, AND a revenue stream to support research N/P discharge leads to phyto bloom

  7. (Photo: Tara Clemente)

  8. Karl 2007

  9. High NO3- Flux Low NO3- Flux Dugdale and Goering “New Production Hypothesis”

  10. ENHANCED OCEAN UPWELLING: WHY? from engineering to ecology to ethics • Air conditioning (SWAC) • Energy generation (OTEC) • Food production/biofuels • Mining (phosphate extraction) • Hurricane abatement • Carbon sequestration / climate control

  11. MARE LIBERUM: LOCAL ISSUES WITH GLOBAL IMPLICATIONS Seawater Air Conditioning – use deep, cold (nutrient- and CO2-rich) seawater in lieu of heat pumps Ocean Thermal Energy Conversion (OTEC) – use deep, cold (nutrient- and CO2-rich) seawater to generate electricity Green solutions  “green” ocean?

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