CN104075485A - Hot dry rock double-effect lithium bromide absorption heat pump heating system - Google Patents
Hot dry rock double-effect lithium bromide absorption heat pump heating system Download PDFInfo
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- CN104075485A CN104075485A CN201410314696.5A CN201410314696A CN104075485A CN 104075485 A CN104075485 A CN 104075485A CN 201410314696 A CN201410314696 A CN 201410314696A CN 104075485 A CN104075485 A CN 104075485A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
Abstract
The invention relates to a hot dry rock double-effect lithium bromide absorption heat pump heating system. The hot dry rock double-effect lithium bromide absorption heat pump heating system comprises one group or a plurality of groups of airtight metal underground heat exchangers arranged in underground hot dry rock stratum holes; the underground heat exchangers are once filled with desired internal circulating water for heat exchange; the underground heat exchangers are connected to a double-effect lithium bromide absorption heat pump unit by use of hot dry rock hot source water supply pipes; water in the double-effect lithium bromide absorption heat pump unit flows back to the underground heat exchangers by use of hot dry rock heat source water return pipes. The hot dry rock double-effect lithium bromide absorption heat pump heating system is capable of realizing multi-tube heat exchange which is characterized in that the outer walls of the underground heat exchangers and the hot dry rock stratum are used for realizing heat exchange so that the heat exchange capacity can be improved and the power consumption can be reduced. The hot dry rock double-effect lithium bromide absorption heat pump heating system is capable of guaranteeing that the underground heat exchange system group has enough heat exchange capacity to meet the requirements of engineering heat load. Meanwhile, the investment and the water pump power are saved, each heat exchange system joins in heat exchange to the utmost extent, and no influence is produced on ground buildings. As a result, the entire system is low in construction cost and easy to construct. The system is a brand new system adopting the geothermal technique.
Description
Technical field
The present invention relates to hot dry rock absorption type heat pump heat distribution system, especially relate to hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system.
Technical background
Geothermal energy (Geothermal Energy) is the natural heat energy being extracted by the earth's crust, and this energy is from the lava of earth interior, and exists with heating power form, is the energy that causes volcano eruption and earthquake.The temperature of earth interior is up to 7000 ℃, and at the depth of 80 to 100 public miles, temperature can be down to 650 to 1200 ℃.See through flowing of underground water and influx the overhead earth's crust of 1 to 5 kilometer with lava, heating power is able to be transferred to more subaerial place.The lava of high temperature is by near underground water heating, and these warmed-up water finally can ooze out ground.Use geothermal energy the most simply and conform with cost-benefit method most, be exactly directly to take these thermals source, and extract its energy.
Geothermal energy is renewable resource: the typical life of the geothermal activity in magma/volcano is from minimum 5000 to more than 1,000,000 years.The so long life-span makes geothermal source become a kind of renewable sources of energy.In addition, the natural supplementary rate of ground heat reservoir is from several megawatts to more than 1000 megawatts (heat).The mankind are at the gondola Si Kana of dragging in 1904 with GEOTHERMAL WATER generating for the first time.Within 1958, Zelanian Bei Dao starts land used heat resource power generation (2013 being 212 megawatts); The hot field of fountain of California, USA, just generated electricity since nineteen sixty, and power output is 1300 megawatts.Obviously, geothermal energy resources can be reliably, safety and the operation of sustainability ground.The sustainability that underground heat is produced also can be from being present in the thermal source judgement heat reservoir rock (heat content 85%～95%).In the hot field of fountain of California, USA, thermal content conservative estimation be at least equivalent to the to burn energy of 28,000,000,000 barrels of oil or 6,200,000,000 short (1 short=907 kilograms) coal gained.
Geothermal energy is a kind of new clear energy sources, in the situation that current people's environmental consciousness day by day strengthens with the energy is increasingly in short supply, the rational exploitation and utilization of geothermal energy resources is more and more subject to people's favor.China is middle low temperature resource big country, and the whole of China's geothermal energy resources potentiality account for percent 8 left and right, the whole world, and so huge geothermal energy resources are that the development of Future in China geothermal energy resources industry is had laid a good foundation.Major sedimentary basin, the whole nation is 2000 meters of geothermal energies with interior storage far from earth's surface, according to relevant expert's measuring and calculating, are equivalent to 2,500 hundred million tons of standard coal heats.Whole nation underground heat can production of resources amount be annual 68 billion cubic meters, and contained geothermal flow is 973,000,000,000,000 kJ (kilojoule)s.In geothermal utilization scale, China in the last few years always position occupy first place in the world, and to be often close on 10% speed steady-state growth.Geothermal energy resources are mainly distributed among tectinic mobile belt and large deposited basin, and the former stock number is more concentrated, Ru Zang, Yunnan, river and southeastern coast and the east area of the Liao River, coextensive with eastern and southern Liaoning Province-northern Shandong one band; The latter's resource distribution is wide, as areas such as capital, Tianjin, Shan, Jis.Develop geothermal energy resources for alleviating China's energy-intensive situation, restructure the use of energy, develop a circular economy, Resources for construction economizing type, environmentally friendly harmonious society tool are of great significance.
According to world's underground heat conference statistics in 2010, the whole world had 78 countries and is developing ground thermal technology, and 27 countries utilize geothermal power generation, and total installation of generating capacity is 10715MW, annual electricity generating capacity 67246GWh, mean utilization 72%.The geothermal energy resources of China are also very abundant, but exploitation degree is very low.
The utilization of geothermal energy can be divided into geothermal power generation and directly utilize two large classes, and the scope that may utilize for the geothermal fluid of different temperatures is also different.It is the geothermal utilization mode that is only second to geothermal power generation that geothermal energy is directly used in to heating, heat supply and supplying hot water.
Summary of the invention
The object of this invention is to provide and a kind ofly can not get geothermal water, improve exchange capability of heat and reduce the hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system of power consumption.
The object of the invention is to be achieved through the following technical solutions: a kind of hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system, comprise double-effect lithium bromide absorption type source pump (10), hot dry rock thermal source return pipe (11), hot dry rock thermal source feed pipe (12), hot dry rock heat-source Cycles pump (13), ground heat exchanger (14), in the boring of underground xeothermic rock stratum (15), be provided with one or more groups airtight metal ground heat exchanger (14), in ground heat exchanger (14), once fill the inside heat exchange recirculated water of good required heat exchange, in ground heat exchanger (14), be provided with hot dry rock thermal source feed pipe (12) and hot dry rock thermal source return pipe (11), hot dry rock thermal source feed pipe (12) is provided with hot dry rock heat-source Cycles pump (13), ground heat exchanger (14) is connected to double-effect lithium bromide absorption type source pump (10) by hot dry rock thermal source feed pipe (12), double-effect lithium bromide absorption type source pump (10) flows back in ground heat exchanger (14) by hot dry rock thermal source return pipe (11), many group ground heat exchangers (14) are by hot dry rock thermal source feed pipe (12) and hot dry rock thermal source return pipe (11) parallel connection.
Double-effect lithium bromide absorption type source pump comprises absorber (1), evaporimeter (2), high-temperature heat exchanger (3), low temperature heat exchanger (4), high-temperature generator (5), cryogenerator (6), condenser (7), container A (16), container B (17), container C (18), in container A (16), be provided with absorber (1) and evaporimeter (2), in container B (17), be provided with high-temperature generator (5), in container C (18), be provided with cryogenerator (6) and condenser (7), heat supply return pipe (19) connects the import of absorber (1), the outlet of absorber (1) connects condenser (7) import, condenser (7) outlet connects for hot water supplying pipe (20), hot dry rock thermal source feed pipe (12) connects evaporimeter (2) import, evaporimeter (2) outlet connects hot dry rock thermal source return pipe (11), high-temperature geothermal connects high-temperature generator (5) import for water-driven power (21), high-temperature generator (5) outlet connects high-temperature geothermal backwater and drives power (22), rare lithium-bromide solution in container A (16) connects low temperature heat exchanger (4) through solution pump (8) and high-temperature heat exchanger (3) is connected to container B (17) again, lithium-bromide solution in container B (17) is connected in container C (18) through high-temperature heat exchanger (3), lithium-bromide solution in container C (18) is connected in container A (16) through low temperature heat exchanger (4), steam in container B (17) is connected to cryogenerator (6) import, cryogenerator (6) outlet is connected to container C (18), condensate water in condenser (7) is through choke valve (9) connecting container A (16).
The quantity of described ground heat exchanger (14) is determined according to engineering thermic load amount.
The present invention has the following advantages:
One, according to the thermic load of project select suitable absorption type heat pump assembly by underground heat as ubiquity, thermal source easy to use.When geotemperature is lower, by driving heat pump with combustion gas as power, from underground heat, absorbs heat and heat to building.When subsurface temperature is higher, can directly use underground heat as power drive absorption type heat pump work, in underground heat, absorb heat and heat to building.
Two, the present invention can determine according to the size of engineering project thermic load amount quantity and the degree of depth of heat exchanger, guarantees that underground heat exchange system has enough exchange capability of heat to meet the needs of engineering thermic load.
Three, heat exchanger adopts closed circulating system, to deep under ground 2000-5000m mounting heat exchanger, by Tube Sheet of Heat Exchanger outer wall and middle low-temperature formation heat exchange around, groundwater abstraction not, prevent that level of ground water from declining, therefore surface structures is reduced investment outlay and water pump quantity without impact, make each heat-exchange system participate in to greatest extent heat exchange.
Four, the present invention has fundamentally solved heat transfer problem, has realized the object of generally utilizing the heat supply of hot dry rock lithium bromide absorption type heat pump.
Five, energy-saving efficiency of the present invention is high.
1, use clean energy resource, be conducive to area surroundings construction, optimize regional energy resource structure
(1) more than 70% electric power of China is firepower, and electricity consumption essence is to burn coal, can discharge the pollutants such as a large amount of SO2, dust, brings acid rain, haze etc., very big to regional environmental pollution, and harm people are healthy;
(2) natural gas is clean, the high efficient energy sources that country promotes the use of;
(3) promoting the use of double-effect lithium bromide absorption type heat pump, is the effective way of adjusting regional energy resource structure.
2, use energy-saving environmental protection device (the non-electric air-conditioning of double-effect lithium bromide absorption type unit), promote local to " low-carbon economy " Mode change.
(1) utilize heat energy for power, particularly can utilize lower potential heat energy (solar energy, waste heat, used heat etc.);
(2) take lithium bromide water solution as working medium, odorless, nontoxic, harmless, is conducive to meet the requirement of environmental protection; Air-conditioning is not used " freon " etc. to the great cold-producing medium of environmental hazard." lithium bromide " of its use is common in seawater, is a kind of nontoxic, the harmless inorganic salts of occurring in nature.
(3) double-effect lithium bromide absorption type unit moves under vacuum state, without high pressure explosion danger, safe and reliable;
(4) strong adaptability that condition changes to external world, can steady running within the scope of certain heat medium water inlet temperature, chilled water outlet temperature and cooling water temperature.
(5) hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system operation power consumption is low, cost is low, environmental-protecting performance is remarkable, effectively reduces carbon emission.
3, significantly alleviate severe " severe power shortage " pressure, ensure power grid security.
(1) existing all large area power cuts to limit consumption of various places, country will be for a long time in power shortage state.Double-effect lithium bromide absorption type heat pump (non-electric air-conditioning) does not take State Grid's source of funds, can help country to save a large amount of Electricity Investment gold;
(2) natural gas is contrary with " the demand paddy peak cycle " of electric power, and double-effect lithium bromide absorption type heat pump (non-electric air-conditioning) has extremely significant effect to improving electric power paddy peak balance;
(3) effectively reduce " Gu Feng is poor " of electrical network, to improving the stable of national grid facility, ensure that power grid security is significant.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
The specific embodiment
Hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system refers to by rig to low temperature formation (50 ℃-100 ℃) boring in underground certain depth, a kind of airtight metallic recuperator is installed in boring, at the interior heat transferring medium that is full of, by heat exchanger, conduct the heat energy of the underground degree of depth is derived, and pass through the special equipment system new technology of space heating earthward.
The implication of economic benefits and social benefits unit: driving heat source is directly utilized at the high pressure generator of unit, and is indirectly utilized for the second time in low pressure generator, is generally steam type unit and direct combustion type cold warm water machine group that steam pressure is higher.Refrigeration machine has two generators (regenerator), is conventionally referred to as high pressure generator and low pressure generator, or is called high-temp regenerator and low-temperature regenerator.Economic benefits and social benefits direct combustion type refrigeration machine generally has two heat exchangers, is called high-temperature heat exchanger and low temperature heat exchanger.Economic benefits and social benefits steam type refrigeration machine has three heat exchangers, is respectively: high-temperature heat exchanger, low temperature heat exchanger, solidifying water heat exchanger, and solidifying water-to-water heat exchanger, solidifying water-to-water heat exchanger is wherein used for absorbing the heat the steam condensation water of discharging from high pressure generator.
Hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system, comprise double-effect lithium bromide absorption type source pump 10, hot dry rock thermal source return pipe 11, hot dry rock thermal source feed pipe 12, hot dry rock heat-source Cycles pump 13, ground heat exchanger 14, in 15 borings of underground xeothermic rock stratum, be provided with one or more groups airtight metal ground heat exchanger 14, in ground heat exchanger 14, once fill the inside heat exchange recirculated water of good required heat exchange, in ground heat exchanger 14, be provided with hot dry rock thermal source feed pipe 12 and hot dry rock thermal source return pipe 11, hot dry rock thermal source feed pipe 12 is provided with hot dry rock heat-source Cycles pump 13, ground heat exchanger 14 is connected to double-effect lithium bromide absorption type source pump 10 by hot dry rock thermal source feed pipe 12, double-effect lithium bromide absorption type source pump 10 flows back in ground heat exchanger 14 by hot dry rock thermal source return pipe 11, many group ground heat exchangers 14 are by hot dry rock thermal source feed pipe 12 and 11 parallel connections of hot dry rock thermal source return pipe.Double-effect lithium bromide absorption type source pump 10 comprises absorber 1, evaporimeter 2, high-temperature heat exchanger 3, low temperature heat exchanger 4, high-temperature generator 5, cryogenerator 6, condenser 7, container A 16, container B 17, container C 18, in container A 16, be provided with absorber 1 and evaporimeter 2, in container B 17, be provided with high-temperature generator 5, in container C 18, be provided with cryogenerator 6 and condenser 7, heat supply return pipe 19 connects the import of absorber 1, the outlet of absorber 1 connects condenser 7 imports, condenser 7 outlets connect for hot water supplying pipe 20, hot dry rock thermal source feed pipe 12 connects evaporimeter 2 imports, evaporimeter 2 outlets connect hot dry rock thermal source return pipe 11, high-temperature geothermal connects high-temperature generator 5 imports for water-driven power 21, high-temperature generator 5 outlets connect high-temperature geothermal backwater and drive power 22, rare lithium-bromide solution in container A 16 connects low temperature heat exchanger 4 through solution pump 8 and high-temperature heat exchanger 3 is connected to container B 17 again, lithium-bromide solution in container B 17 is connected in container C 18 through high-temperature heat exchanger 3, lithium-bromide solution in container C 18 is connected in container A 16 through low temperature heat exchanger 4, steam in container B 17 is connected to cryogenerator 6 imports, cryogenerator 6 outlets are connected to container C 18, condensate water in condenser 7 is through choke valve 9 connecting container A16.
Ground heat exchanger 14 is delivered to the recirculated water of hot dry rock thermal source feed pipe 12 in the evaporimeter 2 in double-effect lithium bromide absorption type heat pump by hot dry rock heat-source Cycles pump 13, the steam that supplying hot water heating fumigators 2 produces is absorbed by the bromize lithium concentrated solution of container A 16, the rare lithium-bromide solution diluting is delivered in container B 17 by low temperature heat exchanger 4 and high-temperature heat exchanger 3 by solution pump 8, high-temperature generator 5 driving heat source heating, produce steam again heats lithium-bromide solution in cryogenerator 6, the steam producing feeds to user by the water heating that heats copper pipe in condenser 7, and it is high, the formed dense lithium-bromide solution of cryogenerator is by high, low temperature heat exchanger flows back into again in container A 16, the condensate water that condenser 7 produces is got back in container A 16 by choke valve 9, in absorption type heat pump assembly, by the recirculated water after heat absorption, through hot dry rock thermal source return pipe 11, be communicated to ground heat exchanger 14, many group ground heat exchangers 14 are by hot dry rock thermal source feed pipe 12 and 11 parallel connections of hot dry rock thermal source return pipe.The quantity of ground heat exchanger 14 is determined according to engineering thermic load amount.When geotemperature is lower, by natural gas heat energy entrance combustion gas, as power, drive heat pump, when subsurface temperature is higher, can directly use underground heat as power drive absorption type heat pump work.
During operation, open water circulating pump 13, recirculated water, is injected recirculated water in underground heat exchange pipe 14 by hot dry rock thermal source return pipe 11 by hot dry rock thermal source feed pipe 12 after 10 heat absorptions of double-effect lithium bromide absorption type heat pump.Recirculated water utilizes ground heat exchanger 14 outer walls and hot dry rock rock stratum 15 to carry out heat exchange.The backward space heating heating of double-effect lithium bromide absorption type heat pump 10 heat absorption.
Double-effect lithium bromide absorption type heat pump heat distribution system is saved machine room area more than 40% than traditional air-conditioning system, can increase usable floor area thus.Double-effect lithium bromide absorption type heat pump compressor-free, good stability, machine life was over 20 years, double-effect lithium bromide absorption type heat pump is due to " cellular-type heats " technology of employing, making to heat becomes one simple " vacuum boiler ", and " refrigeration machine " of non-complex makes one times of refrigeration machine life.Be not both with another of traditional main body heating machine set, cellular-type heating machine set can be stopping refrigeration, health hot water is provided separately while heating.
Claims (3)
1. a hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system, comprise double-effect lithium bromide absorption type source pump (10), hot dry rock thermal source return pipe (11), hot dry rock thermal source feed pipe (12), hot dry rock heat-source Cycles pump (13), ground heat exchanger (14), it is characterized in that: in the boring of underground xeothermic rock stratum (15), be provided with one or more groups airtight metal ground heat exchanger (14), in ground heat exchanger (14), once fill the inside heat exchange recirculated water of good required heat exchange, in ground heat exchanger (14), be provided with hot dry rock thermal source feed pipe (12) and hot dry rock thermal source return pipe (11), hot dry rock thermal source feed pipe (12) is provided with hot dry rock heat-source Cycles pump (13), ground heat exchanger (14) is connected to double-effect lithium bromide absorption type source pump (10) by hot dry rock thermal source feed pipe (12), double-effect lithium bromide absorption type source pump (10) flows back in ground heat exchanger (14) by hot dry rock thermal source return pipe (11), many group ground heat exchangers (14) are by hot dry rock thermal source feed pipe (12) and hot dry rock thermal source return pipe (11) parallel connection.
2. a kind of hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system as claimed in claim 1, it is characterized in that: double-effect lithium bromide absorption type source pump (10) comprises absorber (1), evaporimeter (2), high-temperature heat exchanger (3), low temperature heat exchanger (4), high-temperature generator (5), cryogenerator (6), condenser (7), container A (16), container B (17), container C (18), in container A (16), be provided with absorber (1) and evaporimeter (2), in container B (17), be provided with high-temperature generator (5), in container C (18), be provided with cryogenerator (6) and condenser (7), heat supply return pipe (19) connects the import of absorber (1), the outlet of absorber (1) connects condenser (7) import, condenser (7) outlet connects for hot water supplying pipe (20), hot dry rock thermal source feed pipe (12) connects evaporimeter (2) import, evaporimeter (2) outlet connects hot dry rock thermal source return pipe (11), high-temperature geothermal connects high-temperature generator (5) import for water-driven power (21), high-temperature generator (5) outlet connects high-temperature geothermal backwater and drives power (22), rare lithium-bromide solution in container A (16) connects low temperature heat exchanger (4) through solution pump (8) and high-temperature heat exchanger (3) is connected to container B (17) again, lithium-bromide solution in container B (17) is connected in container C (18) through high-temperature heat exchanger (3), lithium-bromide solution in container C (18) is connected in container A (16) through low temperature heat exchanger (4), steam in container B (17) is connected to cryogenerator (6) import, cryogenerator (6) outlet is connected to container C (18), condensate water in condenser (7) is through choke valve (9) connecting container A (16).
3. a kind of hot dry rock double-effect lithium bromide absorption type heat pump heat distribution system as claimed in claim 1 or 2, is characterized in that: the quantity of described ground heat exchanger (14) is determined according to engineering thermic load amount.
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| CN201410314696.5A CN104075485A (en) | 2014-07-03 | 2014-07-03 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
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| CN201410314696.5A CN104075485A (en) | 2014-07-03 | 2014-07-03 | Hot dry rock double-effect lithium bromide absorption heat pump heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653417A (en) * | 2015-02-13 | 2015-05-27 | 李建峰 | Dry-hot-rock geothermal power generation system using ammonia as intermediate medium |
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Effective date of registration: 20160411 Address after: 710065 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 34 Changan square 1 unit 1 building 11901, room 12001 Applicant after: Shaanxi Sijichun Clean Heat Source Co., Ltd. Address before: 710075 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 34 Changan square building 1 unit 11901, room 12001 Applicant before: Li Jianfeng |
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