AffiliationNuclear Engineering, University of Arizona, Tucson
Water Resources Research Center, University of Arizona, Tucson
KeywordsHydrology -- Arizona.
Water resources development -- Arizona.
Hydrology -- Southwestern states.
Water resources development -- Southwestern states.
Electric power production
Water management (applied)
Electric power demand
Potential water supply
MetadataShow full item record
RightsCopyright ©, where appropriate, is held by the author.
Collection InformationThis article is part of the Hydrology and Water Resources in Arizona and the Southwest collections. Digital access to this material is made possible by the Arizona-Nevada Academy of Science and the University of Arizona Libraries. For more information about items in this collection, contact email@example.com.
PublisherArizona-Nevada Academy of Science
AbstractAn examination of potential water sources for power plant cooling in Arizona is presented along with information pertinent to Arizona's future water needs relative to electrical usage growth. It has been projected that Arizona's peak electrical power demands in 1980 and 1990 will exceed that of 1970 by some 5000 megawatts and 16000 megawatts of electricity respectively. At present, the bulk of the electrical energy generated in the western states originates at hydroelectric installations. Utilization of nuclear reactors for power generation requires a larger amount of cooling water than is required for a comparable fossil-fueled plant. It is suggested that the utilization of reclaimed wastewater for cooling purposes is a viable and attractive alternative to groundwater pumpage from both economic and ecological standpoints. Savings arise from conservation of fuel normally required for well pumps, costs of well construction are not required, quantities of fresh water should be released for consumption by alternate users, and a previously unused resource would be effectively recycled.
Showing items related by title, author, creator and subject.
Resource Information Applied to Water Sources and Discharges at Existing and Potential Power Plant Sites in Arizona and the Southwest: Project Completion ReportDeCook, K. J.; Fazzolare, R. A.; University of Arizona; University of Arizona (University of Arizona (Tucson, AZ), 1977)A growing demand for energy production in Arizona has increased the need for assembling and analyzing water resource information relative to energy production, especially electrical power generation. Unit water requirements for cooling of electrical plants, combined with projections of future electrical power demands in Arizona, provide a perspective on future quantities of water needed for cooling. Probabilistic estimates of storage reserves in Arizona groundwater basins indicate that some prospective plant sites can be supplied from groundwater for the 30 -year life of the plant, while others cannot. An estimate of comparative cost for supplying groundwater versus municipal wastewater for cooling electrical plants at selected sites in Arizona showed that use of wastewater would result in considerable savings over use of groundwater, at all sites considered.
Management Model for Electrical Power Production from a Hot-Water Geothermal ReservoirMaddock, Thomas, III; Mercer, James W.; Faust, Charles R.; Attanasi, Emil D.; University of Arizona; U.S. Geological Survey (Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1979-11)A management model is developed that determines the optimum economic recoverability of a particular hot -water geothermal reservoir undergoing exploitation for electric power generation. The management model integrates a physical model of the reservoir that predicts the areas of pressure decline due to withdrawals, and pressure rise due to reinjection of spent fluid, with a model of a two -stage steam turbine power plant that determines the quantity of electricity generated for a rate of hot -water extraction. Capital costs, variable costs and annual fixed costs are obtained for the reservoir development, extraction and reinjection, the transmission system, and the power plant. Revenues are determined for electrical power production. Application of the management model to a simplified, yet realistic example reservoir demonstrates that the methodology developed in this report can be used for analyzing the management of an integrated geothermal reservoir-power plant system.
Solar powered water pump improvementsHauat-Elias, Miguel Jorge,1959- (The University of Arizona., 1988)An improved valve mechanism for the solar motor developed by the Solar Pump Corporation was developed to overcome weaknesses discovered in earlier tests. Va17e actuation was changed from parallel to perpendicular to the motion of the piston to facilitate valve adjustment and cc free the valve seals from being compressed by the main spring. Inlet and outlet valves were replaced with purchased check valves to reduce machining requirements. Mechanical efficiency of the modified motor was found to range from 0.23 to 0.34 and thermodynamic efficiency from 0.027 to 0.032 in a day-long test. Overall energy conversion efficiency was computed to be 0.008 at noon when pumping with a head of 8.25 m. The modified valve mechanism met design objectives of requiring simpler manufacturing processes, and simple and minimal servicing. The manufacturing cost is estimated to be less then $2000.00 for the solar motor.