The method of utilization of the energy of geothermal waters
(57) Abstract:The invention relates to the utilization of the energy of geothermal waters and can be used for heating facilities for various purposes. The method includes passing through the intermediate heat exchangers thermal energy of the geothermal water secondary coolant using as an additional source of energy chemical energy of dissolved gases through the use of primary and secondary separators, as an additional source of energy use associated potential energy of the geothermal water, and as a potential energy converters use the expander and the compressor on the same shaft, and to use the energy of dissolved gases using the gas tank and the gas distribution station. This embodiment improves thermodynamic efficiency of energy utilization geothermal water without the need for additional energy sources. 1 Il. The invention relates to the field of energy, and more specifically to the use and utilization of the energy of geothermal waters and can be used for heating facilities for various purposes.the process competitive with traditional energy and inhibits the development of geothermal energy. At the same time, many of the exploited geothermal fields wellhead gauge pressure exceeds 5-10 MPa or more, and such waters contain significant amounts of dissolved gases, organic, reaching 4-5 m3/m3and more. The methane content in these waters exceeds more than 90%. When exploitation of these energies are not utilized.Known method of utilization of the energy of geothermal waters (see ed. St. USSR 1615488, CL F 24 J 3/08, publ. 23.12.1990). In this way, utilization of geothermal energy water occurs by passing through the intermediate heat exchangers thermal energy of the geothermal water secondary coolant using as an additional source of energy chemical energy of dissolved gases through the use of primary and secondary separators.The disadvantage of this method is that it does not use the additional potential energy of thermal water.The aim of the present invention is to increase thermodynamic efficiency of energy utilization of thermal waters.This goal is achieved by passing through the intermediate heat exchangers t the source of energy chemical energy of dissolved gases through the use of primary and secondary separators and characterized in that as an additional source of energy use associated potential energy of the geothermal water, and as a potential energy converters use the expander and the compressor on the same shaft, and to use the energy of dissolved gases using the gas tank and the gas distribution station.The drawing shows a process diagram of the proposed method. Thermal water from a geothermal well 1 is sent to the primary heat exchanger 2, where it is heated secondary coolant, which is then sent to the consumer of high-grade heat. Next, the waste water flows into the expander 3 for utilization of potential energy. From expander thermal water with low pressure into the separator 4. The liquid phase of the energy from the separator is sent to the drain, and the separated gas is fed into the compressor 5 driven by the expander 3. From the compressor the gas with high pressure and temperature is sent to the secondary heat exchanger 6, where a counter is supplied as a heated fresh water from a municipal water pipe 10. From the heat exchanger 6, the cooled gas is directed into the secondary Sep naturally in paragraph 9 and further for consumer needs. The method of utilization of the energy of geothermal waters by passing through the intermediate heat exchangers thermal energy of the geothermal water secondary coolant using as an additional source of energy chemical energy of dissolved gases through the use of primary and secondary separators, characterized in that as an additional source of energy use associated potential energy of the geothermal water, and as a potential energy converters use the expander and the compressor on the same shaft, and to use the energy of dissolved gases using the gas tank and the gas distribution station.
FIELD: power engineering; use of geothermal heat in units using water from external sources.
SUBSTANCE: proposed plant includes vertical delivery well-bore running to earth's crust and vertical outlet well-bore located at some distance from delivery well-bore; provision is made for evacuation of vapor from this well-bore; plant is also provided with horizontal well-bore for connection of two vertical well-bores and at least one section of horizontal well-bore located in hot rock; all said well-bores are provided with casing pipes to exclude contact of liquid flowing through well-bores with soil or underground water; water obtained after condensation of vapor from outlet well-bore is pumped to delivery well-bore and is used repeatedly. Besides that, horizontal well-bore may be entirely located in rock; delivery and outlet well-bores enter hot rock; plant is provided with devices for delivery of water from delivery well-bore to horizontal well-bore. Water admitting to rock is not contaminated in such plant and may be used repeatedly.
EFFECT: enhanced efficiency.
4 cl, 2 dwg
FIELD: systems using natural heat energy for geothermal power plants or remote heating systems.
SUBSTANCE: proposed method for energy exchange between earth bodies and energy exchanger is implemented by system in which energy exchanger 2 communicates through forward-flow line 10 and return-flow line 14 of circulating water loop with heat exchanger 18 that uses earth heat energy and has at least one forward-flow heat insulated tube 20, 20a disposed in borehole 22 wherein it is enclosed by separating tube 24 that has radial return-flow region 28 on external side for circulating water wherein there is at least one return-flow tube 30 communicating with return-flow line 14; at least lower region of borehole carries porous filler 18 and communicates with bottom inlet hole 45, 46a of forward-flow tube 20, 20a at least at bottom of borehole 22 via one or more through holes 44 made in separating tube 24. Adjustable shut-off valves 12, 16 are installed on forward- and return-flow lines 10 and 14. At least one forward-flow heat-insulating tube is disposed within separating tube 24 inside borehole 22; region 28 disposed in radial direction outside tube 24 forms circulating-water return-flow region. Disposed in return-flow region 28 is at least one return-flow tube 30 communicating with return-flow line 14 and with porous filler 38, as well as with forward-flow tube 20 at least at bottom of borehole 22 through inlet hole 20 made at bottom of this tube or through inlet holes 46, 46a of forward-flow tubes 20, 20a via one or more through holes 44 made in separating tube 24. System also has device 50 connected thereto for filling it with medium to build up high pressure within system, and preferably drain cock 56 disposed in forward-flow line 10 between shutoff valve 12 and heat exchanger 18 using earth heat energy, both designed to drain circulating water from forward-flow tube 20 and to initiate water vapor generation and displacement from earth body.
EFFECT: reduced boring and operating cost, enhanced reliability.
35 cl, 9 dwg
FIELD: heat supply systems.
SUBSTANCE: method comprises supplying cooled heat-transfer agent to the casing pipe by means of the heat pump and rising the heated heat-transfer agent in the tube mounted concentrically in the casing pipe.
EFFECT: enhanced environmental protection and reduced cost.
1 cl, 1 dwg
FIELD: electrical engineering, possibly electric energy generating plants on base of liquid low-potential power source.
SUBSTANCE: electric energy generating plant includes converter of neat energy of low-potential water to kinetic energy applied to electric energy generator. Plant is mounted on draining pipeline and it has linear-structure electric energy generator. Said converter is made material with shape memory effect having transition point between temperature of low-potential water and environment and it is kinematically coupled with armature of linear- structure generator. Converter is jointly mounted with possibility of moving from low-potential water to environment and from environment to low-potential water. Environment may be in the form of water pool to which low-potential water is discharged.
EFFECT: possibility of using heat of low-potential waters with temperature 30 - 50°C discharged every day from cooling systems of waters of nuclear and heat electric power stations.
2 cl, 2 dwg
FIELD: solar power engineering.
SUBSTANCE: invention relates to heat pipe solar collectors and it can be used in heat supply of buildings. Parabolic reflectors are installed under light transparent coating of collector and over absorbing pipes which form uninterrupted corrugated panel provided with liquid lenses in lower part. Liquid lenses and arranged over absorbing pipes coaxially with pipes. Liquid prismatic reflectors are installed under convexities of panel corrugations, and on side walls of housing plate reflectors are hinge fastened, being interconnected by polymeric film with metallized coating. Hinge fastening of plate reflectors makes it possible to set angle of their tilting to provide optimum position for each climatic region and concentrate radiation on absorbing pipes arranged in peripheral zone. Connection of separate plates by polymeric film with metallized coating precludes getting of sun rays onto side walls of housing which considerably reduces heat losses through side walls.
EFFECT: enlarged operating capabilities.
SUBSTANCE: invention relates to power engineering, in particular, to devices intended for generating heat produced other than by fuel combustion. The borehole thermal heat source contains a thermal water-supplying well linked to a water source, a drain zone and a thermal water consumer. The thermal water-supplying well is drilled so that its bottom crosses the driftway and serves as a water conduit. A surface reservoir, with a thermal water-supplying well being drilled thereon, an underground water-bearing zone/zones or a surface reservoir with underground zone/zones can be used as a water source. The intersection of the thermal water-supplying well with the driftway located below serves as a drain zone. Additionally, the source contains a swirling thermal water-supplying heat-generator connected with the well and installed under the dynamic level thereof. Water pressure is sufficient to produce the thermal energy; water consumer is wired up, by means of the thermal water pipeline, to the outlet of the swirling heat-generator in the drain zone of the thermal water-supplying well. The swirling heat-generator is disposed in the driftway, connected to the well in the area of its intersection with the driftway and has a pumping plant with binding. Thermal water pipeline is made as an additional well drilled from the driftway prior to its intersection with the daylight surface, in the zone of the thermal water consumer threreto the pipeline of the thermal water consumer is attached. Mouth of the additional well is connected to the pumping plant binding.
EFFECT: simplified thermal source and thermal consumer traffic channel; higher hydro-energy potential in high-water period; operational security and invulnerability.
3 cl, 1 dwg
SUBSTANCE: geothermal installation comprises an Earth heat extraction line, a fume and condensation line of a working body of a turbine, a condenser cooling line and a consumer heat supply line. Out of the Earth heat extraction line heat is transferred into the fume and condensation line of a working body of a turbine and also is directly transferred to the consumer heat supply line. The consumer heat supply line is connected with a condenser cooling line via a heat pump.
EFFECT: invention expands features and improves processing characteristics of a power cycle considering fluctuations in modes of energy load consumption.
FIELD: hydrometallurgy, heating.
SUBSTANCE: invention concerns methods of geothermal energy rock mountain mass extraction and can be used during heating of buildings, structures, particularly dwellings, at the expense of conversion of geothermal heat of Earth crust in heat pump, and also in hydrometallurgy for reduction of system of minerals underground leaching energy content, including array of extracting and stripping (infiltration) boreholes. Well bore is divided by sealed partition at absorption area, located lower than sealed partition and pumping area, located higher than sealed partition, at that pumping area is completely fulfilled by heat-conducting liquid and in it is located manifold of heat taking system of thermal pump, at that in the capacity of sealed partition, separating absorption- pumping areas of well, it is used facility packer for pipeless liquid lifting from wells. Additionally in pumping area it is created stratal liquid flowage, and in absorption area it is created depression in stratal liquid, for instance by means of drowned pump, connected to facility for pipeless liquid lifting from wells. At that heat passing to refrigerant of thermal pump by manifold of heat taking system, located in pumping area of well, and extract from well by stratal liquid, is implemented in different circuits of refrigerant circulation. Additionally for systems of underground leaching, liquid, pumped into stratum through absorption well, is heated by means of placement into absorption well of one or several heat exchangers with closed circuit of coolant circulation of heat distribution system for one or several thermal pump. At that heat transfer from refrigerant of thermal pump to heat-carrying agent of heat distribution system is implemented in separated circuits of coolant circulation of heat distribution system: in closed and open, at that in the capacity of open circuit heat-carrying agent of heat distribution system of thermal pump is used solvent factor, pumped into stratum through absorption well.
EFFECT: reduction of system of minerals underground leaching energy content.
12 cl, 6 dwg
FIELD: heating systems.
SUBSTANCE: invention refers to heat engineering, and namely to geothermal power plants producing electric energy based on using the heat of geothermal sources. In a geothermal power plant with circuit of heat carrier which includes gas separator, and waste heat exchangers of gas-turbine plant exit gas heat, which are connected with a well, and heat exchangers installed in condensate feed path of steam-turbine circuit, the organic fuel combustion products after gas turbine enter immediately the direct-contact heat exchanger installed on gas separator discharge thermal water piping. Thermal water mixture together with organic fuel combustion products moves through heat exchangers installed in condensate feed path of steam-turbine plant.
EFFECT: improving operating efficiency of geothermal power plant due to preventing formation of carbonate deposits in geothermal equipment, eliminating hazard of blockage of back pumping well, improving energy potential of thermal water passing through heat exchangers, and complete elimination of pollution of the environment with organic fuel combustion products.
SUBSTANCE: invention deals with method of utilising geothermal energy in heat and refrigeration supply systems. The invention concept is as follows: heated geothermal well water is utilised by an absorption heat pump generator to provide for the heat pump operation and further - for additional heating of the cold water supply system tap water to have been preheated in the absorber. When the heat pump is used to provide for heat supply in colder season water is supplied into the heat pump evaporator to be therefrom discharged back into the well with the facility-heating system water heated in the condenser. When the heat pump is used to provide for heat supply in warmer season water is utilised by the consumer to be further supplied into the heat pump condenser and therefrom discharged back into the well with the refrigeration supply system water chilled in the evaporator.
EFFECT: improved cost-efficiency of heat and refrigeration supply.
3 cl, 2 dwg