Showing papers on "Geothermal desalination published in 1980"
TL;DR: In this article, techniques are outlined to permit custom design of seawater desalination plants which offer reliable long-term performance as well as competitive economics, including water intake, pretreatment, choice of materials of construction, design alternatives and energy recovery.
11 citations
TL;DR: In this paper, a review of the development of plate-and-frame systems and especially three different approaches used by DDS-RO is presented. But the authors do not discuss the application of the system in water desalination.
8 citations
TL;DR: In this article, photoelectrodialytic desalination has been studied with the addition of a cell buffer compartment to keep unwanted ions leaking through imperfect membranes from contaminating the product water, different membranes, and thin film polycrystalline electrodes in sulfide/polysulfide electrolyte.
Abstract: Continuing experiments on photoelectrodialytic desalination now include the addition of a cell buffer compartment to keep unwanted ions leaking through imperfect membranes from contaminating the product water, different membranes, and thin film polycrystalline electrodes in sulfide/ polysulfide electrolyte. Both the rate and extent of desalination have been markedly improved. Economic feasibility projections are updated.
5 citations
01 Jan 1980
TL;DR: In this paper, the use of solar energy for desalination and water reuse is examined and compared with the purpose of using the most energy efficient ones in combination with solar energy systems.
Abstract: With the existing shortages in water and energy in many parts of the world, the use of solar energy for desalination and water reuse is examined. The desalination processes of current interest are reviewed and their energy demand is compared with the purpose of using the most energy efficient ones in combination with solar energy systems.
3 citations
TL;DR: In this article, the first RO seawater desalination plant was brought into operation in Riyadh, Saudi Arabia, and the investment and total operation costs for this plant have been calculated in the paper.
2 citations
TL;DR: Geothermal energy is a promising future source of electric energy, ambient heat, and direct thermostat as discussed by the authors, which can be applied with state-of-the-art technology, with improvement in corrosion control and down-hole pumping.
Abstract: SYNOPSIS The world potential for geothermal energy represents a substantial augmentation to energy supplies at costs competitive with petroleum at present prices. About 20 nations have geothermal projects or experiments underway and at least another 25 nations have geothermal potential. Current uses of geothermal energy include space heating and cooling, greenhouses. Soil warming, kiln drying, and electric energy production. Numerous new applications appear to be feasible, such as environmentally controlled livestock production, absorption refrigeration, and industrial processing in such areas as pulp and paper, wood chemicals, sugar beets, and corn products. Geothermal energy can be applied with state-of-the-art technology, with improvement in corrosion control and down-hole pumping. Incentives may be needed to stimulate geothermal investment to overcome the higher front-end costs of geothermal installations. Geothermal energy is a promising future source of electric energy, ambient heat, and direct ther...
2 citations
TL;DR: In this paper, the authors considered reuse of water in an area where seawater desalination will be used to produce the basic water source, overall water resource development costs should be considered before selection of the basic desalification process.
2 citations
Patent•
08 May 1980TL;DR: In this article, a desalination system for drinking water and salt from sea water is based on solar and wind energy, where sea water was heated in covered shallow ponds during the hrs. of sunshine and was concnd to produce fresh water by circulating through expansive evaporators during the remaining hrs. The power required for the circulation is gained from wind-driven generators.
Abstract: A desalination system for the prodn. of drinking water and salt from sea water is based on solar and wind energy. Sea water is heated in covered shallow ponds during the hrs. of sunshine and is concnd. to produce fresh water by circulating through expansive evaporators during the remaining hrs. The power required for the circulation is gained from wind-driven generators. This saves fossil or nuclear energy and produces fresh water and salt from sea water and indigenous wind energy.
1 citations
DOI•
01 Jun 1980TL;DR: In this article, the authors show how the electrical output derived from a geothermal borehole may be substantially improved on that expected from these cycles by incorporating the geothermal heat into a conventional steam-cycle power station to provide feedwater heating.
Abstract: The generation of electricity from low-temperature geothermal sources has been hampered by the low conversion efficiencies of Rankine cycle operating below 150°C. In the paper, the author shows how the electrical output derived from a geothermal borehole may be substantially improved on that expected from these cycles by incorporating the geothermal heat into a conventional steam-cycle power station to provide feedwater heating. This technique can yield thermal conversion efficiencies of 11% which, for a well-head temperature of 100°C, is 50% greater than the output expected from a Rankine cycle. Coupled with the smaller capital costs involved, feedwater heating is thus a more attractive technique of converting heat into electricity. Although power stations above suitable geothermal resources would, ideally, have the geothermal heat incorporated from the design stage, experiments at Marchwood Power Station have shown that small existing sets can be modified to accept geothermal feedwater heating.
1 citations
01 Mar 1980
TL;DR: In this paper, the results of standard chemical geothermometry techniques, chemical analysis of ground water and geologic mapping of large sedimentary basins are combined to delineate areas in the southwestern United States where geothermal desalination may help to augment deficient water supplies.
Abstract: Combining the results of standard chemical geothermometry techniques, chemical analysis of ground water and geologic mapping of large sedimentary basins, we have delineated areas in the southwestern United States where geothermal desalination may help to augment deficient water supplies. Ten areas favorable for geothermal desalting have been located within Arizona, New Mexico, and southwest Texas. (10 pages)