CN207688465U - A kind of energy storage type high-efficiency air source heat pump heating system - Google Patents
A kind of energy storage type high-efficiency air source heat pump heating system Download PDFInfo
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- CN207688465U CN207688465U CN201820022537.1U CN201820022537U CN207688465U CN 207688465 U CN207688465 U CN 207688465U CN 201820022537 U CN201820022537 U CN 201820022537U CN 207688465 U CN207688465 U CN 207688465U
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Abstract
The utility model discloses a kind of energy storage type high-efficiency air source heat pump heating system and method, system includes energy storage subsystem, air preheater, transmission ＆ distribution electronic system and air source heat pump.Air compressor, heat accumulation/heat exchanger, air storage chamber, regenerator, heater, turbo-expander, which are sequentially communicated, constitutes energy storage subsystem；Turbo-expander is connect with generator, and generator is connect by transmission ＆ distribution electronic system with air source heat pump motor；Heat accumulation/heat exchanger discharge outlet is connected to air preheater water inlet, and air preheater discharge outlet is connected to through circulating pump with heat accumulation/heat exchanger water inlet.Can night power grid trough-electricity be transformed into air pressure can store, while using heat of compression preheated air source heat pump inlet air to improve heat pump efficiency under Low Night Temperature, and the air pressure of storage can be converted into electrical energy drive air source heat pump by the peak of power consumption period on daytime.Air source heat pump operation power charge can be effectively reduced, and can solve the problems, such as that air source heat pump efficiency is not high under Low Night Temperature environment.
Description
Technical field
The utility model is related to clean heating technology field, in particular to a kind of energy storage type high-efficiency air source is warm
Pump heating system.
Background technology
In recent years, haze weather most of the northern region of China continue, frequently occur.Due to many cities in the winter north
The area such as periphery, rural area does not have central heating, soot emissions caused by largely being warmed oneself using scatter fire of raw coal and small scall coal-fired boiler
As the important sources of haze.To solve the above problems, country is carrying forward vigorously cleaning heating engineering, wherein " coal changes electricity " is
Clean one of the important measure of heating.On the other hand, due to the life characteristic that mankind's daytime row night is lied prostrate, different periods power load is poor
It is different so that power grid is there are huge load peak-valley difference, this is the problem that the whole world faces.As China's wind-powered electricity generation, photovoltaic are the new of representative
Energy power generating industry rapidly increases, and fluctuation, intermittence and anti-tune peak character have been further exacerbated by network load peak-valley difference, by
This leads to abandon that wind, to abandon optical phenomenon increasingly severe.To promote power load balance, country and various regions to formulate " peak valley " electricity price political affairs
Plan, peak period electricity price are even up to 3 to 4 times of low-valley interval electricity price.In view of the above-mentioned problems, there has been proposed one kind to incite somebody to action
The energy storage type heating technology that " coal changes electricity " is combined with power grid " peak load shifting " demand.Currently used energy storage type heating technology
Mainly thermal storage electric boiler, heat storage medium (water or solid material) is heated to certain temperature using night dip electricity and stores heat by it
Amount is heated in ordinary telegram period and peak potential period using stored heat.Thus, it is possible to which electric heating cost is greatly reduced, but store
Water-tube boiler does not have energy-saving benefit just with peak-trough electricity price difference, if being included in heat storage medium radiation loss, electric heating conversion
Efficiency is less than common electric boiler.
Air source heat pump is to use electrical energy drive, is heated using surrounding air as low-grade heat source, has efficiency height, system
Simply, the characteristics of convenient operating maintenance.Compared with electric boiler, the COP values of air source heat pump are usually above 2, i.e. 1kW electric energy can produce
Raw 2kW or more heats, have preferable energy-saving benefit, are the important technology selections that coal changes electricity.However, air source heat pump at this stage
Technology there is problems：1) efficiency is influenced by ambient air temperature.Northern area winter day and night temperature is larger, daytime room
External environment temperature is usually at 0 DEG C or more, and air source heat pump COP values can reach 2.8 or more, and nighttime ambient temperature is gradually decreased to
About -10 DEG C hereinafter, COP values are less than 2.In addition, under less than 0 DEG C environment, evaporimeter frosting phenomenon is serious, needs constantly to defrost,
Once this occurs, COP values can even be less than 1 so that cannot run.2) be not suitable for being combined with existing heat-storage technology.Air
Source heat pump can only generate about 60 DEG C of hot water, and since temperature is relatively low, energy density is low, required heat storage medium if being used as accumulation of heat with it
Very high capacity, it is less economical.
Thus, it is necessary to a kind of novel energy storage type high-efficiency air source heat pump heating system is designed, to solve the above problems.
Invention content
Technical problem present in for the above-mentioned prior art, it is efficient that the purpose of this utility model is to provide a kind of energy storage type
Air source heat pump heating system and method can overcome the shortcomings of existing air source heat pump heating technology.The system can be by night
Power grid trough-electricity, which is transformed into air pressure, to be stored, while using heat of compression preheated air source heat pump inlet air to improve night
The air pressure of storage can be converted into electrical energy drive air source heat pump by heat pump efficiency under low temperature in the peak of power consumption period on daytime.
In order to solve problem above, the technical solution of the utility model is：
A kind of energy storage type high-efficiency air source heat pump heating system, including low pressure air compressor, heat accumulation/heat exchanger, high pressure
Air compressor, the first cooling tube bundle, the second cooling tube bundle, air storage chamber, regenerator, heater, turbo-expander, motor, sky
Air supply heat pump, air preheater and low-voltage distribution subsystem；
Wherein, the air inlet and air communication of low pressure air compressor, exhaust outlet are connect with one end of the first cooling tube bundle,
The other end of first cooling tube bundle and the air inlet of High-Pressure Compressor connect, the exhaust outlet of High-Pressure Compressor and second
One end of cooling tube bundle connects, and the other end of the second cooling tube bundle is connect by check-valves with air storage chamber, the first cooling tube bundle with
Second cooling tube bundle may be contained in heat accumulation/heat exchanger；The cavity of heat accumulation/heat exchanger provides the space for holding heat-storage medium；
The cold medium entrance of air storage chamber and regenerator connects, and the cold medium outlet of regenerator and the air inlet of heater connect
It connects, the exhaust outlet of heater and the air inlet of turbo-expander connect, the exhaust outlet of turbo-expander and the thermal medium of regenerator
Entrance connects, the thermal medium outlet and air communication of regenerator；
Turbo-expander is connect with motor, and motor is connect by low-voltage distribution subsystem with local power net；
Air preheater is set at the gas feed of air source heat pump, import and the heat accumulation/heat exchanger of air preheater
Upper end connection, the outlet of air preheater is connect with the lower end of heat accumulation/heat exchanger；
Air source heat pump and heating water return piping connection；
Low-voltage distribution subsystem is connect with air source heat pump.
Night dip electricity, which is transformed into air pressure, by air compressor to store, and at network load peak on daytime
Compressed air is converted to electrical energy drive air source heat pump by section again, reaches three advantageous effects：First, meeting power grid, " peak clipping is filled out
Paddy " and night wind-electricity integration dissolve demand；Second is that the characteristic by heat pump COP values higher than 1 realizes the energy saving of trough-electricity；Three
It is effective reduction air source heat pump operation power charge.
Recycle air compression process the heat of compression simultaneously be used for night preheated air source heat pump inlet air, reach two it is beneficial
Effect：First, compression process energy consumption is reduced by reducing High-Pressure Compressor air inlet temperature, to improve electricity-electricity conversion effect
Rate；Second is that by improving air source heat pump low-temperature heat source temperature so that air source heat pump COP values increase under night relatively low temperature.
Compressed-air energy storage subsystem is incorporated into the power networks, the shadow to operation of heat pump such as energy storage subsystem start stop operation is can avoid
It rings, so that system power scheduling is more flexible, device integration is high, easily operated maintenance.
Preferably, first cooling tube bundle and the second cooling tube bundle are set to the lower end of heat accumulation/heat exchanger, and second is cold
But tube bank is positioned at the lower end of the first cooling tube bundle.
Low pressure air compressor discharge high temperature air the first cooling tube bundle Bottomhole pressure, flow direction on to
Under, the high temperature air of High-Pressure Compressor discharge in the Bottomhole pressure of the second cooling tube bundle, from top to bottom, store up by flow direction
The water at low temperature of lower part heats cocurrent by cooling during rolling tube bank and rear portion cooling tube bundle in a manner of heat transfer free convection in heat/heat exchanger
To heat accumulation/heat exchanger top, it is conducive to the storage of thermal energy.
Preferably, the regenerator is one kind in plate heat exchanger, shell-and-tube heat exchanger, heat-pipe heat exchanger.
Preferably, the heat-storage medium in heat accumulation/heat exchanger is water.
Preferably, the heater is one kind in shell-and-tube heat exchanger, heat-pipe heat exchanger, and heat medium is heat conduction
Oil, heat source are the solar energy that trough type solar heat-collector is collected.
Preferably, the heater is combustion chamber.Using natural gas as fuel, pass through combustion heating.
Preferably, the air preheater is tubular air preheater.Hot water outflows in Bottomhole pressure, Cryogenic air from pipe
It crosses and is heated.
Preferably, it is arranged with stop valve on the inlet and outlet pipeline of the air preheater.Daytime temperature compared with
Air preheater water route is cut off when high, directly uses surrounding air as air source heat pump low-temperature heat source.
The energy-storage system takes the pattern of being incorporated into the power networks, and sends out electric energy access low-voltage network, low pressure air compressor, height
Air compressor is pressed to be obtained from low-voltage network with electric energy needed for air source heat pump operation.
A kind of energy storage type high-efficiency air source heat pump heating method, includes the following steps：
1) when night, air enters low pressure air compressor and is compressed into low-voltage high-temperature air, into the first cooling tube bundle
In be cooled to low-pressure low-temperature air, subsequently into High-Pressure Compressor, be compressed to high pressure-temperature air, it is cold into second
But tube bank is cooled to high pressure low temperature air, while the heat-storage medium in heat accumulation/heat exchanger being heated, and high pressure low temperature air enters
Air storage chamber stores；Convert the electric energy from power grid to the sensible heat energy of air pressure energy, air sensible energy and heat-storage medium；
The heat-storage medium heated in heat accumulation/heat exchanger is pumped in air preheater, to entering the sky of air source heat pump
Gas is preheated, and the import of heat-storage medium after cooling from heat accumulation/exchanger base is recycled back to heat accumulation/heat exchanger, while air
Source heat pump is by power grid electrical energy drive；
2) when daytime, the high pressure low temperature air in air storage chamber enters regenerator after forcing down warm air during throttle valve decompression is
Heating after being heated subsequently into heater, is done work into turbo-expander, the work(driving generator hair of turbo-expander output
Electricity, the electric power access low-voltage distribution subsystem sent out, drives air source heat pump.
Preferably, in step 1), the pressure limit of low pressure air compressor and the compressed air of High-Pressure Compressor
For 2-6MPa.According to compressed air pressure in the system chosen, air compressor is using 2 grades or 3 grades compressions, accordingly at different levels
Cooling during rolling tube bank is arranged between air compressor, and rear portion cooling tube bundle is arranged at afterbody air compressor rear portion；
The beneficial effects of the utility model are：
1) night dip electricity being transformed into air pressure by air compressor can store, and on network load on daytime peak
Compressed air is converted to electrical energy drive air source heat pump by the period again, reaches three advantageous effects：First, meeting power grid " peak clipping
Fill valley " and night wind-electricity integration dissolve demand；Second is that the characteristic by heat pump COP values higher than 1 realizes the energy saving of trough-electricity；
Third, effectively reducing air source heat pump operation power charge.
2) it recycles the heat of compression of air compression process and is used for night preheated air source heat pump inlet air, reaching two has
Beneficial effect：First, compression process energy consumption is reduced by reducing High-Pressure Compressor air inlet temperature, to improve electricity-electricity conversion
Efficiency；Second is that by improving air source heat pump low-temperature heat source temperature so that air source heat pump COP values increase under night relatively low temperature
Add.
3) compressed-air energy storage subsystem is incorporated into the power networks, can avoid energy storage subsystem start stop operation etc. to operation of heat pump
It influences, so that system power scheduling is more flexible, device integration is high, easily operated maintenance.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Wherein, 1, low pressure air compressor；2, High-Pressure Compressor；3, heat accumulation/heat exchanger；4a, cooling during rolling tube bank；
4b, rear portion cooling tube bundle；5, shut-off valve；6, air storage chamber；7, throttle valve；8, regenerator；9, heater；10, turbo-expander；
11, generator；12, circulating pump；13a, the first stop valve；13b, the second stop valve；14, air source heat pump；15, air preheat
Device；16, low-voltage distribution subsystem；17, surrounding air；18, turbine exhaust；19, air preheater water supply；20, air preheater
Return water；21, heat supply return water；22, heat supply water supply；23, high temperature heat conductive oil；24, medium temperature conduction oil.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As shown in Figure 1, a kind of energy storage type high-efficiency air source heat pump heating system comprising low pressure air compressor 1, high pressure
Air compressor 2, heat accumulation/heat exchanger 3, air storage chamber 6, regenerator 8, heater 9, turbo-expander 10, air preheater 17 and
Air source heat pump 14.
Surrounding air 17 sequentially enters low pressure air compressor 1 and is compressed to low-voltage high-temperature air, into be arranged in heat accumulation/
It is cooled to low-pressure low-temperature air in the cooling during rolling tube bank 4a of 3 lower part of heat exchanger, is compressed into High-Pressure Compressor 2
High pressure-temperature air, into after being cooled to high pressure low temperature air in the after cooler 4b being arranged in below intercooler 4a
Storage in into air storage chamber 6.Water outside cooling during rolling tube bank 4a and rear portion cooling tube bundle 4b as heat-storage medium is heated, and is heated
Hot water afterwards rises to 3 upper storage of heat accumulation/heat exchanger under buoyance lift force effect.After cooler 4b exhaust outlets and air storage chamber 6
Shut-off valve 5 is arranged on pipeline between air inlet, prevents pressure-air in air storage chamber 6 from flowing back.During this, the low pressure is inputted
Air compressor, High-Pressure Compressor electric energy be converted into air pressure energy, water in air sensible energy and heat accumulation/heat exchanger
Sensible heat energy.
It is swollen that pressure-air in air storage chamber 6 enters 8 recovery gas turbine of regenerator after forcing down warm air during the decompression of throttle valve 7 is
Thermal energy in the atmospheric air that swollen machine 10 is discharged, the air after heating enters the air inlet of heater 9, by from solar groove type
The high temperature heat conductive oil 23 of heat collector enters turbo-expander 10 after heating and does work, and high temperature heat conductive oil 23 is cooled to medium temperature conduction oil
Trough type solar heat-collector heating is sent back to after 24.The exhaust of turbo-expander 10 is cooled to atmospheric low-temperature air row through regenerator 8
Enter environment, the generator 11 that the work(amount driving that turbo-expander 10 exports is connect with turbo-expander 10 generates electricity, the electric power sent out
Access low-voltage distribution subsystem 16.Above-mentioned compressed-air energy storage subsystem constitutes energy storage type high-efficiency air source heat pump heating system
The energy storage unit of system can convert electrical energy into the pressure energy of air and heat accumulation/heat exchanger in air storage chamber 6 using the subsystem
The aobvious thermal energy storage of water in 3, and when needed again by compressed air pressure can and external heat coupling release electric energy and defeated
It is assigned to the use of air source heat pump 14.
The hot water 19 on 3 top of heat accumulation/heat exchanger is transported to through circulating pump 12 to be arranged at 15 air inlet of air source heat pump
15 water inlet of air preheater be used for the inlet air of preheated air source heat pump 14, the water after being cooled is from air preheater 15
Discharge outlet discharge be transported to the water inlet of 3 bottom of heat accumulation/heat exchanger.Above-mentioned subsystem constitutes the heat of compression and recycles back
Road, the air heat of compression generated using the circuit energy storage subsystem are used for 14 inlet air of preheated air source heat pump.Air-source
Heat pump 14 accesses low-voltage distribution subsystem 16, is carried in the power grid peak period electric power that is released by energy storage subsystem of its driving power
For.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
1. a kind of energy storage type high-efficiency air source heat pump heating system, it is characterised in that：Including low pressure air compressor, heat accumulation/change
Hot device, High-Pressure Compressor, the first cooling tube bundle, the second cooling tube bundle, air storage chamber, regenerator, heater, turbine expansion
Mechanical, electrical machine, air source heat pump, air preheater and low-voltage distribution subsystem；
Wherein, the air inlet and air communication of low pressure air compressor, exhaust outlet are connect with one end of the first cooling tube bundle, and first
The other end of cooling tube bundle and the air inlet of High-Pressure Compressor connect, the exhaust outlet of High-Pressure Compressor and the second cooling
One end of tube bank connects, and the other end of the second cooling tube bundle is connect by check-valves with air storage chamber, the first cooling tube bundle and second
Cooling tube bundle may be contained in heat accumulation/heat exchanger；The cavity of heat accumulation/heat exchanger provides the space for holding heat-storage medium；
The cold medium entrance of air storage chamber and regenerator connects, and the cold medium outlet of regenerator is connect with the air inlet of heater, is added
The exhaust outlet of hot device and the air inlet of turbo-expander connect, and the exhaust outlet of turbo-expander and the thermal medium entrance of regenerator connect
It connects, the thermal medium outlet and air communication of regenerator；
Turbo-expander is connect with motor, and motor is connect by low-voltage distribution subsystem with local power net；
Air preheater is set at the gas feed of air source heat pump, and the import of air preheater is upper with heat accumulation/heat exchanger
End connection, the outlet of air preheater is connect with the lower end of heat accumulation/heat exchanger；
Air source heat pump and heating water return piping connection；
Low-voltage distribution subsystem is connect with air source heat pump.
2. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：First cooling
Tube bank and the second cooling tube bundle are set to the lower end of heat accumulation/heat exchanger, and the second cooling tube bundle is located under the first cooling tube bundle
End.
3. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：The regenerator is
One kind in plate heat exchanger, shell-and-tube heat exchanger, heat-pipe heat exchanger.
4. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：Heat accumulation/heat exchanger
Interior heat-storage medium is water.
5. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：The heater is
One kind in shell-and-tube heat exchanger, heat-pipe heat exchanger, heat medium are conduction oil, and heat source is collected for trough type solar heat-collector
Solar energy.
6. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：The heater is
Combustion chamber.
7. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：The air preheat
Device is tubular air preheater, and in Bottomhole pressure, Cryogenic air flows through outside pipe to be heated hot water.
8. energy storage type high-efficiency air source heat pump heating system according to claim 1, it is characterised in that：The air preheat
It is arranged with stop valve on the inlet and outlet pipeline of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820022537.1U CN207688465U (en) | 2018-01-05 | 2018-01-05 | A kind of energy storage type high-efficiency air source heat pump heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820022537.1U CN207688465U (en) | 2018-01-05 | 2018-01-05 | A kind of energy storage type high-efficiency air source heat pump heating system |
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| Publication Number | Publication Date |
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| CN207688465U true CN207688465U (en) | 2018-08-03 |
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ID=62991345
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820022537.1U Expired - Fee Related CN207688465U (en) | 2018-01-05 | 2018-01-05 | A kind of energy storage type high-efficiency air source heat pump heating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151368A (en) * | 2018-01-05 | 2018-06-12 | 山东大学 | A kind of energy storage type high-efficiency air source heat pump heating system and method |
| CN111140298A (en) * | 2020-01-07 | 2020-05-12 | 上海锅炉厂有限公司 | Distributed combined heat and power supply compressed air energy storage system |
| CN114382560A (en) * | 2021-12-03 | 2022-04-22 | 中国建筑科学研究院有限公司 | Combined heat and power generation system with photovoltaic power generation and compressed air energy storage coupling |
-
2018
- 2018-01-05 CN CN201820022537.1U patent/CN207688465U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151368A (en) * | 2018-01-05 | 2018-06-12 | 山东大学 | A kind of energy storage type high-efficiency air source heat pump heating system and method |
| CN111140298A (en) * | 2020-01-07 | 2020-05-12 | 上海锅炉厂有限公司 | Distributed combined heat and power supply compressed air energy storage system |
| CN111140298B (en) * | 2020-01-07 | 2024-01-26 | 上海锅炉厂有限公司 | Distributed cogeneration compressed air energy storage system |
| CN114382560A (en) * | 2021-12-03 | 2022-04-22 | 中国建筑科学研究院有限公司 | Combined heat and power generation system with photovoltaic power generation and compressed air energy storage coupling |
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Granted publication date: 20180803 Termination date: 20210105 |