CN101109536A - Waste heat recovery type thermoelectricity cold jointly-supplying technology - Google Patents
Waste heat recovery type thermoelectricity cold jointly-supplying technology Download PDFInfo
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- CN101109536A CN101109536A CNA2006100990401A CN200610099040A CN101109536A CN 101109536 A CN101109536 A CN 101109536A CN A2006100990401 A CNA2006100990401 A CN A2006100990401A CN 200610099040 A CN200610099040 A CN 200610099040A CN 101109536 A CN101109536 A CN 101109536A
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention provides a waste-heat recovery thermal power refrigeration supply technology, which comprises an absorbing thermal pump unit, a thermal power plant, a residual or commercial building needing heating/refrigeration, a heat exchanger, a pipeline, and a cooling tower. When the thermal power plant supplies heat, steam is used to drive the absorbing thermal pump, the recovered waste heat from the circulation cooling water of turbine is used as low-temperature heat source, the heat-supplied area is increased without changing the installed capacity and the supplied steam quantity from an existing power generator, and the increased heat-supplied area is equivalent to the heat of not-consumed steam; when the thermal power plant supplies refrigeration, the absorbing thermal pump is driven by the surplus steam from the power plant, only slight amount of electric power is consumed, this will greatly reduce the shortage of power supply in summer for big and middle cities especially Beijing in China.
Description
Affiliated technical field
The present invention relates to steam power plant in power generation process, utilize winter the steam drive absorption heat pump to reclaim the technology of the heat supply of power plant steam turbine recirculated cooling water used heat, summer steam drive absorption heat pump cooling.
Background technology
In China, cogeneration of heat and power, thermoelectric cold cogeneration technology are extensively promoted because of its energy-conserving and environment-protective.
The operation principle of thermoelectricity co-generating heat supplying is: the condensing turbine group of drawing gas extracts the high temperature and high pressure steam of certain standard from steam turbine when generating, directly change high-temperature-hot-water into by steam water heat exchanger and be transported to space heating by pipeline.In this heat supplying process, steam only is used for conducting heat and not acting in heat exchanger, and the calorific value of energy is constant, but steam
Descending, fail to make full use of the matter of steam energy, is the waste that energy is used.
The principle that thermoelectric cold cogeneration technology adopts when heat supply is the same substantially with above-mentioned cogeneration of heat and power, drives the absorption refrigeration unit by the steam that extracts uniform temperature and pressure during refrigeration, and the unit evaporator end prepares air-conditioner circulating water and is used for central cooling.In this pattern, the absorption refrigeration unit is not operation when heat supply.
In addition, more than have only about 22% to change electric energy in the fuel combustion gross calorific power during two kinds of pattern steam power plant Winter heat supplies, about 37% are used for heat supply, and the recirculated cooling water by turbine condenser scatters in the environment more than 30%.This cooling water waste belongs to low grade heat energy, and is lower because of containing
, can not use by direct heating, wasted in the environment substantially at present, effectively do not recycled.
Summary of the invention
A kind of steam power plant adopts absorption heat pump, the waste heat recovery type thermoelectricity cold jointly-supplying technology that Winter heat supply, summer freeze in generating.This technology does not change existing steam power plant's installed capacity and provides when heat supply quantity of steam, and improved its heat supplying scale, and the heat supplying scale that increases is equivalent to not consume the heat of steam; When central cooling, because absorption heat pump is a steam drive, only consume the electric energy of trace, will alleviate particularly Beijing power shortages in summer situation of China big and medium-sized cities greatly.
The technical solution used in the present invention is: system and device is by absorption type heat pump assembly, steam power plant, by forming for the resident of hot/cold demand or commercial buildings, vapor heat exchanger, flow regulator, various water pump, various pipeline.During heat supply, be used to enter the part or all of steam of vapor heat exchanger originally, drove absorption heat pump, appropriately be used, reasonably utilized the quality and quantity of energy, realized the effective energy from the acting and two aspects of conducting heat.The low-temperature heat source that enters the source pump evaporator end is the power plant steam turbine recirculated cooling water, has realized the recycling to used heat.Condenser end make high-temperature-hot-water by heat supply pipeline to building heat supplying, or be mixed into vapor heat exchanger with the heat supply backwater, and obtain behind the steam heat-exchanging behind the higher temperature to recycle to space heating.
In this system, when utilizing the steam turbine closed-type circulating cooling water as low-temperature heat source, the temperature that enters source pump is generally 15 ℃-35 ℃, regulate the unit operating mode, it is consistent with the temperature that enters condenser of power plant former design to make cooling water discharge the back from unit, turn back in the plant condenser, rise again, get back to unit then and continue to recycle through heat absorption back temperature; As when utilizing steam turbine open circulation cooling water as low-temperature heat source, the temperature that enters source pump is generally 10 ℃-30 ℃, and cooling water enters its tow taste heat of absorption as much as possible behind the unit, afterwards with cooling-water drain in environment.
During cooling, extract the same set of absorption heat pump of steam drive of steam power plant's uniform temperature and pressure criteria, the unit evaporator end prepares air-conditioner circulating water, is used for central cooling by heat supply pipeline, and the recirculated cooling water of condenser end dispels the heat by cooling tower.
The invention has the beneficial effects as follows: during heat supply, slattern when utilizing steam power plant's heating steam heat exchange
Lifting recirculated cooling water used heat
And then promote its grade, prepare high-temperature-hot-water.Utilize absorption heat pump, be equivalent to not consume the heat of steam, the Waste Heat Recovery utilization the recirculated cooling water that emits by cooling tower or natural water increases considerably area of heat-supply service, and society is produced huge economy and dynamogenetic value.During cooling, utilize same set of absorption type heat pump assembly, need not drop into refrigeration machine more just can central cooling.Moreover the absorption heat pump power source is power plant's steam more than needed, only consumes the electric energy of trace, and is significant to alleviating city power shortages in summer.
Description of drawings
The present invention will be further described below in conjunction with Figure of description 1.
Fig. 1 is a systematic schematic diagram of the present invention.
1. steam power plants among Fig. 1,2. pipeline, 3. pipeline, 4. pipeline, 5. pipeline, 6. absorption heat pump, 7. pipeline, 8. pipeline, 9. building or heat supply network, 10. pipeline, 11. pipelines, 12. vapor heat exchangers, 13. pipelines, 14. pipelines, 15. pipelines, 16. pipelines, 17. cooling towers.
The specific embodiment
In Fig. 1, during heat supply, from steam power plant (1) steam turbine, extract steam and enter pipeline (2), be divided into two parts by Flow-rate adjustment, part steam enters absorption heat pump (6) by pipeline (15), drive after the heat pump steam and become high-temperature-hot-water and return boiler by pipeline (16), pipeline (3), the heat pump condenser end rises to 80 ℃ to the heat supply return water temperature in the pipeline (8) and is mixed into vapor heat exchanger by pipeline (7) and the middle heat supply backwater of pipeline (10); Another part steam enters vapor heat exchanger (12) by pipeline (13), and becomes high-temperature-hot-water after the hot water mixing water heat exchange of heat supply backwater and heat pump preparation, returns boiler by pipeline (14), pipeline (2).Vapor heat exchanger is got high-temperature-hot-water in return and is entered heating network to building that heat demand is arranged or heat supply network (9) heat supply by pipeline (11); Power plant steam turbine circulation cooling water outlet enters the source pump evaporator end by pipeline (4), low-temperature heat source as unit, be extracted and become steam turbine circulation cooling backwater behind the heat and return the power plant steam turbine condenser by pipeline (5) or be discharged in the natural environment, realized recycling used heat.
Perhaps during heat supply, the steam that extracts steam power plant (1) enters absorption heat pump (6) as power source through piping (2), pipeline (15), the low-grade exhaust heat of steam turbine recirculated cooling water in the riser tubing (4), the hot water for preparing 80 ℃ passes through pipeline (7) to building or heat supply network (9) heat supply, the heat supply backwater returns absorption type heat pump assembly, circulation heating by pipeline (8) afterwards.Steam behind the release latent heat becomes high-temperature-hot-water and returns boiler of power plant by pipeline (16), pipeline (3).Be extracted steam turbine recirculated cooling water behind the heat and return the power plant steam turbine condenser by pipeline (5) or be discharged in the natural environment, realized recycling used heat.
During cooling, closing pipeline (10), pipeline (11), pipeline (13), pipeline (14) connects with vapor heat exchanger (12), the evaporator end of absorption heat pump (6) connects with pipeline (7), pipeline (8), and condenser end connects with pipeline (4), pipeline (5).The steam that extracts steam power plant (1) enters absorption heat pump (6) as power source through piping (2), pipeline (15), returns boiler of power plant by pipeline (16), pipeline (3) behind the release latent heat.The evaporator end of absorption heat pump (6) prepares kind of refrigeration cycle water and passes through pipeline (7) to building or heat supply network (9) cooling, and the kind of refrigeration cycle water after the heat absorption returns unit by pipeline (8) and recycles.The original recirculated cooling water cooling tower of cooling tower (17) or power plant that the cooling water of the condenser end of absorption heat pump (6) is built in addition by pipeline (5) utilization dispels the heat, and the heat radiation back is returned unit by pipeline (4) and recycled.
Claims (6)
1. the present invention is a kind of waste heat recovery type thermoelectricity cold jointly-supplying technology.It is characterized in that: system is made up of equipment such as absorption type heat pump assembly, steam power plant, building or heat supply network, vapor heat exchanger, pipeline, cooling towers.
2. waste heat recovery type thermoelectricity cold jointly-supplying technology according to claim 1 is characterized in that: during the system heat supply, absorption type heat pump assembly condenser end make high-temperature-hot-water by heat supply pipeline to building heat supplying; Or be mixed into heat exchanger with the heat supply backwater, and and obtaining behind the steam heat-exchanging behind the higher temperature to space heating, system's heat supply water recycles.
3. waste heat recovery type thermoelectricity cold jointly-supplying technology according to claim 1 is characterized in that: during heat supply, what drive absorption heat pump is steam power plant's steam, and it appropriately is used from the acting and two aspects of conducting heat.The low-temperature heat source that enters source pump is the power plant steam turbine recirculated cooling water, has realized the recycling to used heat.
4. waste heat recovery type thermoelectricity cold jointly-supplying technology according to claim 1 is characterized in that: during the system cooling, utilize same set of absorption heat pump and heat supplying pipeline system.Utilize steam power plant's steam drive absorption type heat pump assembly, utilize cooling tower to cool off its circulating condensing water.
5. waste heat recovery type thermoelectricity cold jointly-supplying technology according to claim 1 is characterized in that: enter steam after the source pump work and become high-temperature-hot-water and return boiler of power plant, recycle.
6. waste heat recovery type thermoelectricity cold jointly-supplying technology according to claim 1 is characterized in that: steam that absorption heat pump is required and low-temperature heat source are by the heat demand decision, are regulated automatically by flow regulator.The conveying of water and steam utilizes various utilidors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100990401A CN101109536A (en) | 2006-07-17 | 2006-07-17 | Waste heat recovery type thermoelectricity cold jointly-supplying technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100990401A CN101109536A (en) | 2006-07-17 | 2006-07-17 | Waste heat recovery type thermoelectricity cold jointly-supplying technology |
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| CN101109536A true CN101109536A (en) | 2008-01-23 |
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| CNA2006100990401A Pending CN101109536A (en) | 2006-07-17 | 2006-07-17 | Waste heat recovery type thermoelectricity cold jointly-supplying technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846416A (en) * | 2010-04-29 | 2010-09-29 | 华北电力大学 | System and method for realizing area combined cooling heat by cogeneration coupling heat pump |
| CN105465868A (en) * | 2015-12-01 | 2016-04-06 | 张久明 | Waste heat energy-saving heat supply system of thermal power plant |
| CN109974061A (en) * | 2018-12-27 | 2019-07-05 | 北京建筑大学 | Steam power plant's cold-hot combined supply system and method based on city Public residence subregion |
| CN110878957A (en) * | 2019-12-23 | 2020-03-13 | 北京市热力集团有限责任公司 | Urban heat energy comprehensive utilization system and method |
| CN111486536A (en) * | 2020-04-30 | 2020-08-04 | 赫普能源环境科技股份有限公司 | Summer cooling system for thermal power plant and heat supply pipe network and operation method |
| CN112833440A (en) * | 2021-01-07 | 2021-05-25 | 中国华能集团清洁能源技术研究院有限公司 | Heat supply and cold supply system of heat-engine plant with external delivery multi-pipe network and operation method |
-
2006
- 2006-07-17 CN CNA2006100990401A patent/CN101109536A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846416A (en) * | 2010-04-29 | 2010-09-29 | 华北电力大学 | System and method for realizing area combined cooling heat by cogeneration coupling heat pump |
| CN105465868A (en) * | 2015-12-01 | 2016-04-06 | 张久明 | Waste heat energy-saving heat supply system of thermal power plant |
| CN105465868B (en) * | 2015-12-01 | 2018-08-14 | 张久明 | Steam power plant's afterheat energy-saving heating system |
| CN109974061A (en) * | 2018-12-27 | 2019-07-05 | 北京建筑大学 | Steam power plant's cold-hot combined supply system and method based on city Public residence subregion |
| CN109974061B (en) * | 2018-12-27 | 2023-09-19 | 北京建筑大学 | Combined heat and power supply system and method for thermal power plant based on urban public building residential partition |
| CN110878957A (en) * | 2019-12-23 | 2020-03-13 | 北京市热力集团有限责任公司 | Urban heat energy comprehensive utilization system and method |
| CN111486536A (en) * | 2020-04-30 | 2020-08-04 | 赫普能源环境科技股份有限公司 | Summer cooling system for thermal power plant and heat supply pipe network and operation method |
| CN112833440A (en) * | 2021-01-07 | 2021-05-25 | 中国华能集团清洁能源技术研究院有限公司 | Heat supply and cold supply system of heat-engine plant with external delivery multi-pipe network and operation method |
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