2018, Volume 21, Issue 2
Remarks on the thermal properties of rocks and the treatment of geothermal waters
1 Geological Institute of Romania, Caransebes Street, 1, Bucharest, 012271, Romania
2 National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, PO Box Râureni 7, 240050, Râmnicu Vâlcea, Romania
3 University POLITEHNICA of Bucharest, Faculty of Transportation, Romania
The geothermal waters in our country are geothermal waters cantonized in sedimentary formations, characterized by low pressures. They contain mainly bicarbonates, sulphates, chlorides, hydrocarbons in the free and dissolved state. The geothermal waters are subject to a treatment process in order to be exploited, by which gas separation and eventually their valorization and reduction of the salt crust formation capacity are achieved. In most countries, geothermal waters are exploited in volcanic regions or seismic phenomena and are therefore rich in H2S and SO2.
For water from sedimentary formations, various techniques are used, among which the introduction of inhibitory substances to reduce deposits (sodium polyphosphate), modification of the pH index to obtain neutral waters (by the addition of HCl), ultrasonic treatment, magnetic flux treatment, etc.
Geopressured deposits are water tanks covered with waterproof coating, subject to high pressures. The water contained in these tanks has a low salinity and is saturated with natural gas. These systems have a wide spread and can be exploited for both thermal energy and hydraulic power engineering.
Geothermics with Special Reference to Application
Berlin, Gebrueder Borntraeger (Geoexploration Monographs, 1(4). pp. 1-251
Ground-source heat pumps: Design of geothermal systems for commercial and institutional buildings
Atlanta: American Society of Heating, Refrigerating and Air-Conditioning Engineers, pp. 1-167
Analyses of the factors influencing sandstone thermal conductivity
Acta Geodyn. Geomater., 14(2) (186): 173-180
Geothermal energy: sustainability and the environment
geothermal resources, renewable energy, conduction, convection, radiation
Tag search geothermal resources renewable energy conduction convection radiation