In this paper, a lumped parameter mathematical model for hot water geothermal reservoirs is developed and applied to the Cerro Prieto geothermal field in Mexico. The production and pressure histories of Cerro Prieto were assembled from field data. A computer program was then used to perform sensitivity studies on reservoir size, porosity, aquifer recharge, and temperature of recharge fluid. Two...

in this paper, geographical information system (gis) is used as a support system for decision making in order to provide the map of high potential areas for the construction of greenhouses benefited from geothermal energy. the goal is to perform a geothermal energy resource assessment in eastern azerbaijan province as a base for further studies to achieve sustainable development objectives in t...

derik geothermal region has area of 242 km2 and is located 10 km to the west of salmas city in west azarbaijan province of iran. the most outstanding surface manifestations of geothermal energy in this region are three warm springs and outcrops of travertine deposits and quaternary basalt outcrops around warm springs. temperature range of warm springs varies from 31 to 32.6 °c. we visited and s...

A full scale snow melting system with heat pipe technology is built in this work, which avoids the negative effects on concrete structure and environment caused by traditional deicing chemicals. The snow melting, ice-freezing performance and temperature distribution characteristics of heat pipe concrete runway were discussed by the outdoor experiments. The results show that the temperature of t...

Geothermal power generation and mineral extraction from geothermal brines are affected by chemical processes within the reservoir. Until recently, numerical simulation technology for geothermal systems could not handle most chemical processes, except for tracking total salinity, one or two noncondensable gases, and non-reactive tracers. The Lawrence Berkeley National Laboratory (LBNL) has devel...

Hydrothermally altered samples from outcrops along the eastern Stillwater Range (NV), and scale and vein samples from Dixie Valley geothermal wells were collected for fluid-inclusion analyses. Fluidinclusion microthermometry and gas analysis by quadropole mass spectrometry were applied to establish the chemistry of the fluids trapped during alteration. Relationships between CO2/CH4, N2/Ar, and ...

This paper presents a post-audit of a 1978 examination of economic impacts of geothermal energy development in the Imperial Valley Region of California. It is intended to demonstrate the usefulness of this approach in evaluating the validity of renewable resource development in general. The 1978 examination based its estimates on a projection of 4500 MW of electricity generation capacity develo...

Exploring and exploiting high-temperature (even supercritical) geothermal resources are significant to meet energy demands reduce carbon emissions. The Yangbajing field is the most exploited in China, with currently highest temperature (329.8 °C) measured a well. However, whether there supercritical fluids beneath deep parts of this under controversy. In paper, water isotope, chemical compositi...

Gas concentrations and ratios in 110 analyses of geothermal fluids from 47 wells in the Cos0 geothermal system illustrate the complexity of this two-phase reservoir in its natural state. Two geographically distinct regions of single-phase (liquid) reservoir are present and possess distinctive gas and liquid compositions. Relationships in soluble and insoluble gases preclude derivation of these ...

The efficiency of Geothermal Heat Pumps (GHPs) strongly depends on the site-specific parameters of the ground, which should therefore be mapped for the rational planning of shallow geothermal installations. In this paper, a case study is presented for the potentiality assessment of low enthalpy geothermal energy in the Province of Cuneo, a district of 6900 km2 in Piedmont, NW Italy. The availab...