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The Info List - Geothermal Desalination


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Geothermal desalination
Geothermal desalination
is a process under development for the production of fresh water using heat energy. Claimed benefits of this method of desalination are that it requires less maintenance than reverse osmosis membranes and that the primary energy input is from geothermal heat, which is a low-environmental-impact source of energy. Circa 1995, Douglas Firestone from Nevada
Nevada
devised the use of geothermal water directly as a source for desalination. In 1998, several individuals began working with evaporation/condensation air loop water desalination. The experiment was successful and a proof of concept, proving that geothermal waters could be used as process water to produce potable water in 2001. In 2005 to 2009 testing was done in a sixth prototype of a device referred to as a delta t device, a closed air loop, atmospheric pressure, evaporation condensation loop geothermally powered desalination device. The device used filtered sea water from Scripps Institution of Oceanography and reduced the salt concentration from 35,000 ppm to 51 ppm. A total of six prototypes and six modifications demonstrated that, with process water approaching 100 °C (212 °F) and a chill source about 2 °C (36 °F), a full-size device would produce about 600 m³ of water per day. Salt
Salt
concentration in the wastewater would only be about 10% above the level of the original water, thus, from, say, 35,000 to about 38,000 parts per million, well within the ability of osmoregulators to adjust. See also[edit]

Geothermal power

External links[edit]

European Renewable Energy
Energy
Council - Geothermal Desalination ScienceDirect - Heat Transfer and Evaporation in Geothermal Desalination
Desalination
Units

References[edit]

v t e

Geothermal energy

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The Info List - Geothermal Desalination


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Geothermal desalination
Geothermal desalination
is a process under development for the production of fresh water using heat energy. Claimed benefits of this method of desalination are that it requires less maintenance than reverse osmosis membranes and that the primary energy input is from geothermal heat, which is a low-environmental-impact source of energy. Circa 1995, Douglas Firestone from Nevada
Nevada
devised the use of geothermal water directly as a source for desalination. In 1998, several individuals began working with evaporation/condensation air loop water desalination. The experiment was successful and a proof of concept, proving that geothermal waters could be used as process water to produce potable water in 2001. In 2005 to 2009 testing was done in a sixth prototype of a device referred to as a delta t device, a closed air loop, atmospheric pressure, evaporation condensation loop geothermally powered desalination device. The device used filtered sea water from Scripps Institution of Oceanography and reduced the salt concentration from 35,000 ppm to 51 ppm. A total of six prototypes and six modifications demonstrated that, with process water approaching 100 °C (212 °F) and a chill source about 2 °C (36 °F), a full-size device would produce about 600 m³ of water per day. Salt
Salt
concentration in the wastewater would only be about 10% above the level of the original water, thus, from, say, 35,000 to about 38,000 parts per million, well within the ability of osmoregulators to adjust. See also[edit]

Geothermal power

External links[edit]

European Renewable Energy
Energy
Council - Geothermal Desalination ScienceDirect - Heat Transfer and Evaporation in Geothermal Desalination
Desalination
Units

References[edit]

v t e

Geothermal energy

Category:Geothermal energy

Geothermal energy Geothermal power Geothermal heating Geothermal gradient

By country

Armenia Australia Canada Chile China Denmark El Salvador Energy
Energy
in Ethiopia Germany Iceland Indonesia Italy Japan Kenya Lebanon Lithuania Mexico New Zealand Philippines Portugal Romania Russia Turkey United Kingdom United States

Technologies

Aquaculture Desalination Geothermal heat
Geothermal heat
pump District heating Binary Cycle EGS Heat pump Hot dry rock

Energy
Energy
Concepts

Baseload power Capacity factor Energy
Energy
storage Energy
Energy
subsidies EROEI

Category Portals: Renewable energy Energy Susta

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