Desalination plant using low grade geothermal heat

Ophir, A.

doi:10.1016/s0011-9164(00)88674-9

Cited by 37 publications

(6 citation statements)

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“…Ophir (1982) gave an economic analysis of geothermal desalination in which sources of 110-130 C were considered. He concluded that the price of geothermal desalination is as low as the price of large multiple-effect dual-purpose plants.…”

Section: Geothermal Energymentioning

confidence: 99%

Solar Desalination Systems

Kalogirou¹

2014

Solar Energy Engineering

107

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Section: Geothermal Energymentioning

confidence: 99%

Solar Desalination Systems

Kalogirou¹

2014

Solar Energy Engineering

107

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“…A combined-cycle solargeothermal system linked with AD has been proposed previously [17]. Low-enthalpy geothermal powered desalination systems have been designed, operated, and evaluated in the past, but mostly for low-capacity facilities [11,12,[45][46][47][48][49][50].…”

Section: Low-temperature Geothermal Energy Development and Brackish Wmentioning

confidence: 99%

A new assessment of combined geothermal electric generation and desalination in western Saudi Arabia: targeted hot spot development

Missimer¹,

Martin²,

Ghaffour³

2014

Desalination and Water Treatment

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A B S T R A C THigh heat flow associated with the tectonic spreading of the Red Sea make western Saudi Arabia a region with high potential for geothermal energy development. The hydraulic properties of the Precambrian-age rocks occurring in this region are not conducive to direct production of hot water for heat exchange, which will necessitate use of the hot dry rock (HDR) heat harvesting method. This would require the construction of coupled deep wells; one for water injection and the other for steam recovery. There are some technological challenges in the design, construction, and operation of HDR geothermal energy systems. Careful geotechnical evaluation of the heat reservoir must be conducted to ascertain the geothermal gradient at the chosen site to allow pre-design modeling of the system for assessment of operational heat flow maintenance. Also, naturally occurring fractures or faults must be carefully evaluated to make an assessment of the potential for induced seismicity. It is anticipated that the flow heat exchange capacity of the system will require enhancement by the use of horizontal drilling and hydraulic fracturing in the injection well with the production well drilled into the fracture zone to maximum water recovery efficiency and reduce operating pressure. The heated water must be maintained under pressure and flashed to steam at surface to produce to the most effective energy recovery. Most past evaluations of geothermal energy development in this region have been focused on the potential for solely electricity generation, but direct use of produced steam could be coupled with thermally driven desalination technologies such as multi-effect distillation, adsorption desalination, and/or membrane distillation to provide a continuous source of heat to allow very efficient operation of the plants.

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“…The first geothermal energy-powered desalination plants were installed in the United States in the 1970s [53][54][55][56][57], testing various potential options for the desalination technology, including MSF and ED. An analysis [58] discussing a technical and economic analysis of an MED plant, with a capacity of 80 m 3 /d, powered by a low-temperature geothermal source and installed in Kimolos, Greece showed that high temperature geothermal desalination could be a viable option.…”

Section: Geothermal Energymentioning

confidence: 99%