CN109579104A - A kind of heating system that double heat pumps are coupled with thermoelectricity unit and method - Google Patents
A kind of heating system that double heat pumps are coupled with thermoelectricity unit and method Download PDFInfo
- Publication number
- CN109579104A CN109579104A CN201910036789.9A CN201910036789A CN109579104A CN 109579104 A CN109579104 A CN 109579104A CN 201910036789 A CN201910036789 A CN 201910036789A CN 109579104 A CN109579104 A CN 109579104A
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- Prior art keywords
- heat pump
- absorption
- heat
- primary net
- compression
- Prior art date
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Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 230000005619 thermoelectricity Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 230000006835 compression Effects 0.000 claims abstract description 51
- 238000007906 compression Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 238000005086 pumping Methods 0.000 claims abstract description 15
- 239000008400 supply water Substances 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
Abstract
The invention discloses a kind of heating system that double heat pumps are coupled with thermoelectricity unit and methods, the circulating cooling water out of cooling tower is connected with the heat absorption side entrance of the heat absorption side entrance of absorption heat pump and compression heat pump, and the heat absorption side outlet of absorption heat pump and the heat absorption side outlet of compression heat pump are connected with the circulating cooling water inlet of cooling tower；The pumping outlet of turbine is connected with the driving steam inlet of the cold side of steam heater and absorption heat pump, primary net water return pipeline is connected with the heat release side entrance of the heat release side entrance of absorption heat pump and compression heat pump, the heat release side outlet of compression heat pump and the heat release side outlet of absorption heat pump are connected with primary net water supply line, the output shaft of turbine is connected with the drive shaft of generator, the output end of generator is connected with power grid, which can effectively improve the flexibility of thermoelectricity unit.
Description
Technical field
The invention belongs to the field of heating, it is related to a kind of heating system that double heat pumps are coupled with thermoelectricity unit and method.
Background technique
The central heating heat source in northern China city develops towards large-scale thermoelectricity unit, but continuous with city size
Expand, original thermoelectricity unit is likely difficult to meet practical heat demand.Many steam power plants, which pass through, in recent years increases heat pump system,
The low-temperature heat quantity of a part of recirculated cooling water is promoted using high-grade steam energy and is discharged into primary net water system,
To improve the whole heat capacity of unit.Existing heat pump system is mostly lithium bromide absorption type heat pump, disadvantage in steam power plant
It is that leaving water temperature is lower, generally 80~90 DEG C, it is also necessary to which a pipe network heat supply temperature water can be just increased to by increasing steam heating
It is flat.Absorption type heat pump system can propose the flexibility of high unit to a certain extent, such as in the case where thermic load improves, machine
Group can meet heat supply network demand by absorption heat pump, while keep generated energy small change.But by machine assembly air-exhausting ability
Limitation, the flexibility for increasing the thermoelectricity unit of absorption heat pump has certain limit.
Support energetically with country to renewable energy power, the big electric power of the fluctuations such as wind-powered electricity generation, photovoltaic connect on a large scale
Enter power grid, more stringent requirements are proposed for this flexibility to thermoelectricity unit.Main cause is northwest China area renewable energy
It is abundant, while being also heat supply in winter place in great demand, therefore thermoelectricity unit is more.The big renewable energy power of fluctuation
Internet access request conventional thermal power unit and thermoelectricity unit participate in peak regulation, the thermoelectricity unit that flexible peak regulation requirement is not achieved can not only increase
Big energy consumption and pollutant emission, can also bear huge operated pressure.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, provides a kind of double heat pumps and coupled with thermoelectricity unit
Heating system and method, the system and method can effectively improve the flexibility of thermoelectricity unit.
In order to achieve the above objectives, the heating system that double heat pumps of the present invention are coupled with thermoelectricity unit include cooling tower,
Absorption heat pump, compression heat pump, turbine, steam heater and generator；
The heat absorbing side of the circulating cooling water out of cooling tower and the heat absorption side entrance of absorption heat pump and compression heat pump enters
Mouthful it is connected, the recirculated cooling water of the heat absorption side outlet of absorption heat pump and the heat absorption side outlet of compression heat pump and cooling tower enters
Mouth is connected；
The pumping outlet of turbine is connected with the driving steam inlet of the cold side of steam heater and absorption heat pump, and one
Secondary net water return pipeline is connected with the heat release side entrance of the heat release side entrance of absorption heat pump and compression heat pump, compression heat pump
Heat release side outlet and the heat release side outlet of absorption heat pump be connected with primary net water supply line, the output shaft of turbine and power generation
The drive shaft of machine is connected, and the output end of generator is connected with power grid.
It further include hot water storage tank, wherein the entrance of hot water storage tank is connected with the heat release side outlet of compression heat pump, hot water
The outlet of storage tank is connected with primary net water supply line.
It further include condenser, wherein the cold side of condenser is connected with the air exit of turbine, the heat absorbing side of condenser
Entrance is connected with the circulating cooling water out of cooling tower, the circulating cooling water inlet of the heat absorption side outlet and cooling tower of condenser
It is connected.
The power interface of compression heat pump is connected with the output end of generator and power grid.
Heating method that double heat pumps of the present invention are coupled with thermoelectricity unit the following steps are included:
When heating demand is smaller, primary net return water, which enters, is heated to 70-90 DEG C in the cold side of absorption heat pump, so
It supplies water and exports as primary net afterwards；
When heating demand is larger, primary net return water enters after the cold side of absorption heat pump is heated to 70-90 DEG C
In steam heater, the pumping of the pumping outlet output of turbine is entered in the cold side of steam heater, and steam is heated
Primary net return water in device is heated to 110-130 DEG C, and the primary net return water after steam heater heats supplies water as primary net
Output；
When steam heater and absorption heat pump are not able to satisfy heating demand demand, primary net return water is divided into two-way, and one
As primary net water supply output after the cold side of absorption heat pump and the heating of the heat absorbing side of steam heater, another way enters on road
It supplies water and exports as primary net after being heated to 70-130 DEG C into compression heat pump；
When power grid issues the instruction for reducing load, starts compression heat pump or increase the load of compression heat pump, with
Consume the electric energy that generator generates；When power grid issues the instruction for increasing load, then load or the pass of compression heat pump are reduced
Compression heat pump is closed, to increase generator to the output power of power grid.
The invention has the following advantages:
Heating system that double heat pumps of the present invention are coupled with thermoelectricity unit and method, will be absorption when specific operation
Heat pump is combined with compression heat pump, is jointly used in thermoelectricity unit, and the heat capacity of thermoelectricity unit is not only increased substantially,
Also greatly improve the flexibility of thermoelectricity unit.The simple absorption heat pump of tradition is combined with thermoelectricity unit, can be in certain journey
The heat capacity of unit is improved on degree, but absorption heat pump needs the driving of turbine pumping, however the sucking rate of turbine is limited,
And the efficiency of absorption heat pump is not relatively high, therefore the raising of its heat capacity is relatively fewer；However the present invention will be absorption
Heat pump and compression heat pump are jointly used in thermoelectricity unit, and heat capacity can be in the base of absorption heat pump and thermoelectricity unit
It is greatly increased on plinth, since compression heat pump only consumes electric power, which may come from the electricity of generator sending, therefore
It is not limited by being evacuated, and the efficiency of compression heat pump is higher.In addition, being generated since compression heat pump can consume generator
Electric power so that system has higher flexibility.For example, it is more to work as renewable energy power in power grid, and require thermoelectric perpetual motion machine
Group reduces generated energy, while in the case where keeping heat capacity constant or even increasing, and the compression heat pump in the present invention starts to disappear
Heat in electric power and recirculated cooling water is become the water supply heat once netted by the spontaneous electric power of heat dissipation motor group, to sum up shown,
Absorption heat pump and compression heat pump are jointly used in thermoelectricity unit by the present invention, can effectively improve the spirit of thermoelectricity unit
Activity, and structure is simple, and easy to operate, adaptability is stronger, has wide popularization and application space.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be turbine, 2 be generator, 3 be condenser, 4 be cooling tower, 5 be absorption heat pump, 6 be steam heating
Device, 7 be compression heat pump, 8 be hot water storage tank.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, the heating system that double heat pumps of the present invention are coupled with thermoelectricity unit includes cooling tower 4, absorption
Heat pump 5, compression heat pump 7, turbine 1, steam heater 6 and generator 2；The circulating cooling water out of cooling tower 4 with it is absorption
The heat absorption side entrance of heat pump 5 and the heat absorption side entrance of compression heat pump 7 are connected, the heat absorption side outlet and pressure of absorption heat pump 5
The heat absorption side outlet of contracting formula heat pump 7 is connected with the circulating cooling water inlet of cooling tower 4；Pumping outlet and the steam of turbine 1 add
The cold side of hot device 6 and the driving steam inlet of absorption heat pump 5 are connected, primary net water return pipeline and absorption heat pump 5
Heat release side entrance and the heat release side entrance of compression heat pump 7 are connected, the heat release side outlet and absorption heat pump of compression heat pump 7
5 heat release side outlet is connected with primary net water supply line, and the output shaft of turbine 1 is connected with the drive shaft of generator 2, power generation
The output end of machine 2 is connected with power grid, and the power interface of compression heat pump 7 is connected with the output end of generator 2 and power grid.
The invention also includes hot water storage tanks 8, wherein the heat release side outlet phase of the entrance of hot water storage tank 8 and compression heat pump 7
Connection, the outlet of hot water storage tank 8 is connected with primary net water supply line.
The invention also includes condensers 3, wherein the cold side of condenser 3 is connected with the air exit of turbine 1, condensing
The heat absorption side entrance of device 3 is connected with the circulating cooling water out of cooling tower 4, heat absorption side outlet and the cooling tower 4 of condenser 3
Circulating cooling water inlet is connected.
Heating method that double heat pumps of the present invention are coupled with thermoelectricity unit the following steps are included:
When heating just starts and closes on end, heating demand is smaller, and primary net return water enters absorption heat pump 5
Cold side in be heated to 70-90 DEG C, then supply water output as primary net；
With the reduction of temperature, heating demand is larger, relies solely on absorption heat pump 5 and heats primary net return water and is difficult to meet
It is required that when, it is entered in steam heater 6 from pumping is introduced into turbine 1, primary net return water adds through the cold side of absorption heat pump 5
For heat to entering in steam heater 6 after 70-90 DEG C, the pumping of the pumping outlet output of turbine 1 enters steam heater 6
In cold side, and the primary net return water in steam heater 6 is heated to 110-130 DEG C, one after the heating of steam heater 6
Secondary net return water supplies water as primary net and exports；
Since the sucking rate of steam has certain limit, the thermal power that generator 2 exports is also to have certain limit, when
When absorption heat pump 5 and pumping heating are all unable to satisfy heat demand, i.e., when steam heater 6 and absorption heat pump 5 cannot expire
When sufficient heating demand demand, primary net return water is divided into two-way, the cold side and steam heater 6 all the way through absorption heat pump 5
Supply water output after heat absorbing side heating as primary net, another way enters in compression heat pump 7 be heated to 70-130 DEG C after conduct
Primary net, which supplies water, to be exported；
Since the electricity that compression heat pump 7 consumes may come from the electricity of the generation of generator 2, do not changing absorption type heat
In the case where the heating power of pump 5 and steam heater 6, it is additionally provided thermal power, to improve the whole heating power of system；Together
When by increasing hot water storage tank 8 so that compression heat pump 7 has the ability of more preferable 2 electric power of regulator generator output, to improve
The flexibility of unit.
When power grid issues the instruction for reducing load, starts compression heat pump 7 or increases the load of compression heat pump 7,
To consume the electric energy of the generation of generator 2；When power grid issue increase load instruction when, then reduce compression heat pump 7 load or
Person closes compression heat pump 7, to increase generator 2 to the output power of power grid, due to the speed of 7 lifting load of compression heat pump
It is significantly larger than the lifting load speed of boiler in unit, so that the response speed of entire unit is faster, to improve entirety
The flexibility of system.
For the driving heat source of absorption heat pump 5 from pumping, low-temperature heat source comes from recirculated cooling water, and the working medium heated is one
Secondary net return water；The heat that primary net return water absorbs in absorption heat pump 5 is equal in pumping heat release and the recirculated cooling water utilized
The sum of a part of heat.The driving force of compression heat pump 7 is electric energy, may be from generator 2, may also come from power grid.
Claims (5)
1. a kind of heating system that double heat pumps are coupled with thermoelectricity unit, which is characterized in that including cooling tower (4), absorption heat pump
(5), compression heat pump (7), turbine (1), steam heater (6) and generator (2)；
The heat absorption of the circulating cooling water out of cooling tower (4) and the heat absorption side entrance of absorption heat pump (5) and compression heat pump (7)
Side entrance is connected, the heat absorption side outlet and cooling tower (4) of the heat absorption side outlet of absorption heat pump (5) and compression heat pump (7)
Circulating cooling water inlet be connected；
The pumping outlet of turbine (1) is connected with the driving steam inlet of the cold side of steam heater (6) and absorption heat pump (5)
Logical, primary net water return pipeline is connected with the heat release side entrance of the heat release side entrance of absorption heat pump (5) and compression heat pump (7)
Logical, the heat release side outlet of compression heat pump (7) and the heat release side outlet of absorption heat pump (5) are connected with primary net water supply line
Logical, the output shaft of turbine (1) is connected with the drive shaft of generator (2), and the output end of generator (2) is connected with power grid.
2. the heating system that double heat pumps according to claim 1 are coupled with thermoelectricity unit, which is characterized in that further include hot water
Storage tank (8), wherein the entrance of hot water storage tank (8) is connected with the heat release side outlet of compression heat pump (7), hot water storage tank's (8)
Outlet is connected with primary net water supply line.
3. the heating system that double heat pumps according to claim 1 are coupled with thermoelectricity unit, which is characterized in that further include condensing
Device (3), wherein the cold side of condenser (3) is connected with the air exit of turbine (1), the heat absorption side entrance of condenser (3) with
The circulating cooling water out of cooling tower (4) is connected, the heat absorption side outlet of condenser (3) and the recirculated cooling water of cooling tower (4)
Entrance is connected.
4. the heating system that double heat pumps according to claim 1 are coupled with thermoelectricity unit, which is characterized in that compression heat pump
(7) power interface is connected with the output end of generator (2) and power grid.
5. a kind of heating method that double heat pumps are coupled with thermoelectricity unit, which is characterized in that be based on double heat pumps described in claim 1
The heating system coupled with thermoelectricity unit, comprising the following steps:
When heating demand is smaller, primary net return water enters in the cold sides of absorption heat pump (5) and is heated to 70-90 DEG C, so
It supplies water and exports as primary net afterwards；
When heating demand is larger, primary net return water enters steaming after the cold side of absorption heat pump (5) is heated to 70-90 DEG C
In vapour heater (6), the pumping of the pumping outlet output of turbine (1) is entered in the cold side of steam heater (6), and will steam
Primary net return water in vapour heater (6) is heated to 110-130 DEG C, and the primary net return water after steam heater (6) heating is made
Once to net output of supplying water；
When steam heater (6) and absorption heat pump (5) are not able to satisfy heating demand demand, primary net return water is divided into two-way,
All the way as primary net water supply output after the cold side of absorption heat pump (5) and the heating of the heat absorbing side of steam heater (6), separately
It enters in compression heat pump (7) to supply water after being heated to 70-130 DEG C as primary net all the way and export；
When power grid issues the instruction for reducing load, starts compression heat pump (7) or increases the load of compression heat pump (7),
To consume the electric energy of generator (2) generation；When power grid issues the instruction for increasing load, then the negative of compression heat pump (7) is reduced
Lotus closes compression heat pump (7), to increase generator (2) to the output power of power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036789.9A CN109579104A (en) | 2019-01-15 | 2019-01-15 | A kind of heating system that double heat pumps are coupled with thermoelectricity unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036789.9A CN109579104A (en) | 2019-01-15 | 2019-01-15 | A kind of heating system that double heat pumps are coupled with thermoelectricity unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109579104A true CN109579104A (en) | 2019-04-05 |
Family
ID=65915121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910036789.9A Pending CN109579104A (en) | 2019-01-15 | 2019-01-15 | A kind of heating system that double heat pumps are coupled with thermoelectricity unit and method |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030769A (en) * | 2019-05-15 | 2019-07-19 | 北京建筑大学 | Based on heating type it is absorption-compression heat exchange middle low temperature heat energy heating system |
| CN112879996A (en) * | 2021-02-03 | 2021-06-01 | 上海电力大学 | Waste heat comprehensive utilization system for circulating cooling water of thermal power plant |
| CN114251950A (en) * | 2020-09-23 | 2022-03-29 | 中国科学院电工研究所 | Thermal power generation and energy storage container combined system |
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| CN203757825U (en) * | 2014-03-05 | 2014-08-06 | 沈阳奥瑞驰电力科技有限公司 | Heat supply unit with compression heat pump and water heating device combined |
| CN105674378A (en) * | 2015-11-17 | 2016-06-15 | 李微 | Parallel type multi-heat-source series-connection grid-connected heating device |
| CN105783079A (en) * | 2016-04-19 | 2016-07-20 | 刘子旺 | Adjusting method and system for heating variable working condition hot pressing units |
| CN107166484A (en) * | 2017-04-20 | 2017-09-15 | 赫普热力发展有限公司 | Thermoelectricity decouples peak regulation system |
| CN209484700U (en) * | 2019-01-15 | 2019-10-11 | 西安热工研究院有限公司 | A kind of heating system that double heat pumps are coupled with thermoelectricity unit |
-
2019
- 2019-01-15 CN CN201910036789.9A patent/CN109579104A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203757825U (en) * | 2014-03-05 | 2014-08-06 | 沈阳奥瑞驰电力科技有限公司 | Heat supply unit with compression heat pump and water heating device combined |
| CN105674378A (en) * | 2015-11-17 | 2016-06-15 | 李微 | Parallel type multi-heat-source series-connection grid-connected heating device |
| CN105783079A (en) * | 2016-04-19 | 2016-07-20 | 刘子旺 | Adjusting method and system for heating variable working condition hot pressing units |
| CN107166484A (en) * | 2017-04-20 | 2017-09-15 | 赫普热力发展有限公司 | Thermoelectricity decouples peak regulation system |
| CN209484700U (en) * | 2019-01-15 | 2019-10-11 | 西安热工研究院有限公司 | A kind of heating system that double heat pumps are coupled with thermoelectricity unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030769A (en) * | 2019-05-15 | 2019-07-19 | 北京建筑大学 | Based on heating type it is absorption-compression heat exchange middle low temperature heat energy heating system |
| CN114251950A (en) * | 2020-09-23 | 2022-03-29 | 中国科学院电工研究所 | Thermal power generation and energy storage container combined system |
| CN112879996A (en) * | 2021-02-03 | 2021-06-01 | 上海电力大学 | Waste heat comprehensive utilization system for circulating cooling water of thermal power plant |
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