CN109763870A - A kind of low parameter heat recovery system - Google Patents
A kind of low parameter heat recovery system Download PDFInfo
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- CN109763870A CN109763870A CN201910211090.1A CN201910211090A CN109763870A CN 109763870 A CN109763870 A CN 109763870A CN 201910211090 A CN201910211090 A CN 201910211090A CN 109763870 A CN109763870 A CN 109763870A
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- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 239000002918 waste heat Substances 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000010248 power generation Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 70
- 229910052757 nitrogen Inorganic materials 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 239000003570 air Substances 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
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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]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of low parameter heat recovery systems, including the major circulatory system for generating electricity or doing work and the auxiliary circulation system for obtaining and maintaining low-temperature energy sources, by control major circulatory system and auxiliary circulation system so as to form the temperature difference between cryogenic fluid liquid and external recovery waste heat to realize power generation or acting；Major circulatory system includes sequentially connected fluid reservoir, working medium pump, regenerator, first heat exchanger, steam turbine and generator；Auxiliary circulation system includes the second heat exchanger connecting with regenerator and sequentially connected steam turbine, fluid reservoir, jet heat pump and regenerator, and the second heat exchanger is also connect with jet heat pump, and regenerator is connect with fluid reservoir；The first heat exchanger and second heat exchanger are respectively connected with external recovery waste heat.Compared with conventional heat engines, major circulatory system provided by the invention can realize the heat to power output of continuous-stable under auxiliary circulation help in the case where not needing external cold source and cooling down to steam exhaust.
Description
Technical field
The invention belongs to Engineering Thermodynamics technical fields, are related to a kind of low parameter heat recovery system, and in particular to Yi Zhongli
The system for being generated electricity or being done work with environment temperatures such as waste heat, water temperature, air.
Background technique
According to the second law of thermodynamics, all to work between identical high temperature heat source temperature and low-temperature heat source temperature are followed
In ring, using the thermal efficiency of Carnot cycle as highest, referred to as Carnot's theorem.Carnot cycle is the most basic base of thermodynamics power cycle
Plinth, effectiveness formula η=1-T of Carnot cycle2/T1, it is the core of Carnot cycle, it can from the effectiveness formula of Carnot cycle
Out: the efficiency of Carnot cycle is only related with the thermodynamic temperature of two heat sources, if the temperature of high temperature heat source is higher, low-temperature heat source
Temperature it is lower, then the efficiency of Carnot cycle is higher.Because T cannot be obtained1The high temperature heat source or T of → ∞2=0K's (- 273 DEG C)
Low-temperature heat source, so the efficiency of Carnot cycle is necessarily smaller than 1.If the temperature of high temperature heat source is equal to the temperature of low-temperature heat source, effect
Rate is zero, i.e., the theoretical basis of acting cannot be converted from single source.Current thermal machine is all using environment temperature as Low Temperature Thermal
Source, and environment temperature can not change, therefore, existing research are all the temperature by high temperature heat source, i.e., using fossil fuel into
Row heating, to improve the temperature of high temperature heat source, to improve Carnot's cycle efficiency.
Rankine cycle is the concrete application to Carnot cycle, is currently widely used in the neck such as thermal power generation, cogeneration
Domain.Existing Rankine cycle structural schematic diagram, as shown in Figure 1, low temperature liquid working medium extracts pressurized pump conveying out from fluid reservoir
To heat exchanger, pushing generator power generation acting, the low temperature low pressure gas of steam turbine discharge will be in its heat of vaporization through condenser
Latent heat dissipates, and the low temperature low pressure gas not done work is made to become liquid, completes a circulation.Wherein condenser and environment (air
Or cooling medium) composition outer low temperature energy resource system, if maintaining system without the outer low temperature energy, which cannot work
Make.Therefore, key is the problem of Rankine cycle: if 1, do not sponge the heat of vaporization of steam exhaust, steam exhaust can not just become liquid, just
It can not achieve continuous thermal technology's circulation, this is the basic foundation of Thermal Motor work.2, modern Pyrology is all with environment temperature
For low-temperature heat source, power is provided to Thermal Motor using the high temperature heat source for being higher than environment temperature, this is to lead to modern Pyrology
In can only burn various fuel, such as coal, natural gas, uranium obtain high temperature heat source.
Summary of the invention
To solve the above-mentioned problems, it the purpose of the present invention is to provide a kind of low parameter heat recovery system, can not only realize
The utilization of low grade residual heat recycling, can also greatly improve generating efficiency, while under conditions of smaller outer power input, utilizing environment
Heat source carries out thermal power conversion as high temperature and pressure heat source, so that realizing heat to power output in the case where no external cold source
And substantially increase the efficiency of heat to power output.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of low parameter heat recovery system, including the major circulatory system for generating electricity or doing work and for obtaining and maintaining low
The auxiliary circulation system of the warm energy, by control major circulatory system and auxiliary circulation system so as to cryogenic fluid liquid and external return
It receives and forms the temperature difference between waste heat to realize that electric power exports；
Wherein, the major circulatory system includes the sequentially connected fluid reservoir equipped with working medium liquid, working medium pump, regenerator,
One heat exchanger, steam turbine and generator；
The auxiliary circulation system include the second heat exchanger being connect with regenerator and sequentially connected steam turbine,
Fluid reservoir, jet heat pump and regenerator, the second heat exchanger are also connect with jet heat pump, and regenerator is connect with fluid reservoir；
The first heat exchanger and second heat exchanger are respectively connected with external recovery waste heat.
Further, the working medium liquid include liquid nitrogen, liquid air, R410A refrigerant, liquid carbon dioxide, liquified hydrogen,
One of liquid helium.
Further, the first heat exchanger and second heat exchanger are contraflow heat exchanger.
The purpose of the present invention additionally provides a kind of low parameter heat recovery method, includes the following steps:
(1) by the working medium liquid extraction in fluid reservoir, simultaneously pressurized delivered to regenerator, regenerator carries out the working medium liquid of low temperature
Heat exchange, the working medium liquid by heat exchange carry out heat exchange in inflow first heat exchanger and external recovery waste heat again, make work
Matter liquid expansion stroke high temperature and high pressure gas flows into steam turbine and drives electrical power generators or acting；
(2) steam exhaust of steam turbine outflow flows into fluid reservoir and carries out gas-liquid separation, and liquid is mixed with working medium liquid, gas quilt
It is mixed after jet heat pump sucking with the high pressure gas of the output of second heat exchanger, mixed medium temperature and medium pressure Working medium gas flows back again
Heat exchange is carried out in device and with the working medium liquid in pressurized delivered to regenerator, the working medium liquid after cooling is held in liquid reserve tank flowing back to.
The present invention also provides a kind of low parameter heat recovery systems in waste heat pollution and the application of power field.
The present invention also provides a kind of low parameter heat recovery system refrigerating field application.
The present invention also provides a kind of low parameter heat recovery systems in the application for generating electricity and freezing in coproduction.
It is node the present invention also provides a kind of low parameter heat recovery system, each node is connected into city using electric system
The application of city's distributed energy net.
The invention has the following advantages:
(1) by the way that the auxiliary circulation system for obtaining and maintaining cryogenic energy is arranged, overcome in traditional rankine cycle
It needs external cold source to carry out the equipment at cooling to the steam exhaust emitted after steam turbine acting, can continue to maintain cold source, save
Cost improves working efficiency；
(2) it by the way that sequentially connected steam turbine, fluid reservoir, jet heat pump and regenerator is arranged, realizes the weary of steam turbine
In vapour gas carry out gas-liquid separation, and to the gas after separation by jet heat pump negative pressure absorbing and with hot friendship is carried out in regenerator
It changes, enters in liquid reserve tank after cooling, realize that cold source maintains；
(3) whole process can carry out at normal temperature, be not necessarily to external high temperature heat source, energy saving.
Detailed description of the invention
Fig. 1 is prior art Rankine cycle schematic diagram.
Fig. 2 is 1 structural schematic diagram of the embodiment of the present invention.
Fig. 3 is 2 structural schematic diagram of the embodiment of the present invention.
Fig. 4 is 3 structural schematic diagram of the embodiment of the present invention.
Fig. 5 is 4 structural schematic diagram of the embodiment of the present invention.
Marked in the figure: 1, first heat exchanger；2, second heat exchanger；3, steam turbine；4, generator；5, jet heat pump；
6, regenerator；7, working medium pump；8, fluid reservoir；9, third heat exchanger；10, the first valve；11, the second valve.
Specific embodiment
Embodiment 1
As shown in Fig. 2, low parameter heat recovery system provided in this embodiment includes first heat exchanger 1, the second heat exchange
Device 2, steam turbine 3, generator 4, jet heat pump 5, regenerator 6, working medium pump 7 and fluid reservoir 8.
The fluid reservoir 8 for storing working medium liquid, common working medium liquid include liquid nitrogen, liquid air, R410A refrigerant,
Liquid carbon dioxide, liquified hydrogen, liquid helium etc., this example preferably select liquid nitrogen, and the temperature of the liquid nitrogen under normal pressure is -196
DEG C, 1 cubic metre of liquid nitrogen can be expanded to 696 cubic metres 21 DEG C of pure gaseous nitrogen, and the temperature in the fluid reservoir 8 is maintained at-
204 DEG C, liquid nitrogen is made to be maintained at the state of liquid, which is provided with an apocenosis passage 81, a gas-liquid mixed channel 82, a row
Gas channel 83, a feed pathway.
The working medium pump 7 can also reduce liquid nitrogen in transmission process convenient for the transmission of liquid nitrogen using cryogenic liquid pump
Loss.
The regenerator 6 is flowed out using the regenerator 6 with two teams' access, liquid nitrogen of a pair of of access for fluid reservoir 8, separately
A pair of of access flows back to fluid reservoir 8 for liquid nitrogen.
The first heat exchanger 1 and second heat exchanger 2 are all made of contraflow heat exchanger, it includes two entrances Aa
It is used for transporting liquid nitrogen with two outlet Bb, an entrance A and corresponding outlet B, an entrance a to be with corresponding outlet b for transporting
Defeated external recovery waste heat.
The steam turbine 3 is steam turbine engine, is existed in absolute temperature in 100 DEG C or less, high temperature and high pressure gas pressure
The middle-pressure steam turbine 3 that 4Mpa, outlet steam exhaust pressure are 30kpa.
The jet heat pump 5 includes 3 ports, and one is low pressure inlet 52, is connect with the exhaust passage 83 of fluid reservoir 8,
One is work hot gas inlet 51, is connect with the outlet 2B of second heat exchanger 2, and one is mixed export end 53, with regenerator 6
For liquid nitrogen flow back to fluid reservoir 8 a pair of of access connection.
Apocenosis passage 81, working medium pump 7, regenerator 6, first heat exchanger 1, steam turbine 3 and the generator of the fluid reservoir 8
4 are sequentially connected, and major circulatory system are formed, for generating electricity or doing work；It is first turned on working medium pump 7, liquid nitrogen is extracted fluid reservoir 8 and adds
The defined pressure of pressure, then flow into regenerator 6 and after the nitrogen progress heat exchange of the mixed export end 53 of jet heat pump 5 output
It is being delivered to 1 low-temperature inlet 1A of first heat exchanger, external recovery waste heat flows into first heat exchanger 1 from high temperature inlet 1a
Interior, external recovery waste heat and liquid nitrogen carry out heat exchange, flow out after external recovery waste heat is cooled down and from low-temperature outlet 1b, liquid nitrogen quilt
It is heated into nitrogen (high temperature and high pressure gas), nitrogen is flowed into steam turbine 3 from hot outlet 1B again, the blade rotation on steam turbine 3
And then generator 4 is driven to be generated electricity or done work.
The steam turbine 3, fluid reservoir 8, jet heat pump 5 and regenerator 6 are sequentially connected, and the work hot gas of jet heat pump 5 enters
Mouth 51 is connect with second heat exchanger 2, and regenerator 6 is also connect with the feed pathway 83 of fluid reservoir 8, is not done work in steam turbine 3
Steam exhaust is directly entered in fluid reservoir 8, and into after fluid reservoir 8, the liquid in steam exhaust is fallen directly into liquid nitrogen, and gas is above liquid
And the mixing chamber of negative pressure suction jet heat pump 5 is formed at 5 mesolow import 51 of jet heat pump, the work hot gas of jet heat pump 5 enters
Mouth 52 connects the hot outlet 2B of second heat exchangers 2, and the pressure high temperature hot gas that second heat exchanger 2 exports also enters mixing chamber
The gas for being mixed to form medium temperature and medium pressure is carried out with steam exhaust, which passes through the output reflux of mixed export end 53 of jet heat pump 5 again
Device flows back in a pair of of access of fluid reservoir 8 for liquid nitrogen, carries out heat exchange with the liquid nitrogen that working medium pump 7 is extracted out, will be in mixing
Warm medium pressure gas cooling is liquid and is back in fluid reservoir 8, enters back into the circulation of next round.Because provided by the present embodiment
The environment of liquid nitrogen is in always in closed environment, and mutually indepedent between each equipment, so that temperature and pressure is also respective
It is independent, so any change will not occur for the pressure that liquid nitrogen heating becomes gas.
In practical application, it is 30kpa that the pressure at the low pressure inlet 51 of jet heat pump 5, which controls always, therefore, with low pressure
Temperature in the fluid reservoir 8 of inlet communication is -204 DEG C, to guarantee that the liquid nitrogen temperature in fluid reservoir 8 is stablized, is mentioned for steam turbine 3
For a stable low temperature cold source temperature.T2=-204 DEG C of cold source in fluid reservoir 8.And fluid reservoir 8 and 3 steam exhaust of steam turbine export
Connection.In a closed system, if the pressure that liquid is subject to is lower than the boiling point of this kind of liquid, liquid will constantly steam
Hair, while the temperature of liquid constantly declines, and finally reaches the corresponding temperature of liquid pressure.
By in the present embodiment concrete application nuclear power station recirculated cooling water, i.e., nuclear power station recirculated cooling water is used as more than external recycling
Heat, this technology not only completely eliminate thermal pollution, and outlet temperature is environment temperature between 0 DEG C.Nuclear power station circulating cooling water temperature
Generally 35~40 DEG C of degree, this is selected as 38 DEG C.That is, 38 DEG C of the temperature of the high temperature inlet a1 of the first exchanger, exports b1's
Water temperature is set as 20 DEG C, and the nitrogen temperature of hot outlet B1 is 15 DEG C, enthalpy h1=289.65kj/kg, and steam turbine 3
The steam exhaust temperature of turbine outlet is -190.74 DEG C, enthalpy h2=84.5kj/kg.It is 0.7618 according to Carnot cycle effect η.
Indicate there is 76.18% conversion work done, remaining steam latent heat in 3 inlet steam h1 of steam turbine from Carnot's cycle efficiency
Account for the percentage of inlet steam h1 are as follows: 1-0.7618=0.2382.And remaining steam latent heat is by the low pressure inlet of jet heat pump 5
End suction.
The work 15 DEG C of temperature, enthalpy h1=289.65kj/kg of hot gas inlet of jet heat pump 5, with steam exhaust-
190.74 DEG C, enthalpy be h2=84.5kj/kg mixing after both unit steam gross calorific value then are as follows: 289.65kj+84.5k/2=
187.08kj/kg, by consulting nitrogen physical property table, it is known that the corresponding vapor (steam) temperature of 187.08kj/kg is 223k.
The liquid nitrogen enthalpy being heated in the regenerator 6 is 187.08kj/kg, is heated again into first heat exchanger 1
To 15 DEG C, it is 289.65kj/kg that enthalpy, which increases,.Due to being twice of working medium, increased thermal energy Q is 289.6-187.08/2=
205.14kj。
It is exactly 3 work done W=h1- of steam turbine that the 3 inlet steam enthalpy h1 of steam turbine, which subtracts outlet vapor enthalpy h2,
H2=289.6-84.5=205.15kw.
50t/h is set by the import tolerance of steam turbine 3, low-temperature energy sources maintain system from power consumption 700kw；Steam turbine 3 is done
Function 2710kw, generator 4 rated power 2500kw, maximum power 3000kw, processing nuclear power station circulating water afterheat pollute 200 tons；
Output power 1800kw, and then substantially increase the utilization rate of the energy.
Embodiment 2
The present embodiment is essentially identical with embodiment 1, and auxiliary circulation system does not change, and only increases a heat exchanger and two
A valve is on major circulatory system, specifically, as shown in figure 3, third heat exchanger 9 is connected with after the first heat exchanger 1,
And it is connected in parallel first valve 10 to first heat exchanger 1, third heat exchanger 9 is connected in parallel second valve 11.
The external recovery waste heat of the present embodiment uses Environmental Heat Source, and the present embodiment major circulatory system uses two-stage heat exchanger
Liquid nitrogen and Environmental Heat Source are subjected to heat exchange, so that Environmental Heat Source cools down, liquid nitrogen is heated to form nitrogen, and steam turbine 3 can be made to work
Engine power generation is driven, is blown in air and is cooled down by fan again after Environmental Heat Source cooling, to realize the effect of refrigeration.Institute
Stating refrigeration effect is determined according to the low-temperature outlet temperature of heat exchanger setting, according to different heat sources, the heat exchanger
Different heat exchangers can be used.It is cold that the provided refrigeration system of the present embodiment can be used for freezer, freezer, container
Freeze vehicle, container refrigeration vehicle, be also possible to occasion or object that all needs such as office or family's refrigeration freeze, is suitable for sky
Between lesser place.
Embodiment 3
The present embodiment is substantially the same manner as Example 2, and auxiliary circulation system does not change, only increase identical quantity heat exchanger and
For valve on major circulatory system, connection structure and third heat exchanger 9 and the second valve 11 are identical, specifically as shown in figure 4,
Increase N number of heat exchanger, N=1,2,3 ... n (n is integer), heat exchanger takes away room thermal energy, will flow after centralized heat energy
Enter the acting of steam turbine 3, generator 4 is driven to generate electricity, the aperture of control valve or the flow velocity of cryogenic fluid, all adjustable refrigeration
Amount.Combined power and cooling system provided by the implementation case is comprehensive to all kinds of building, residential quarters, industrial district, large enterprise, city
Zoarium etc. carries out combined power and cooling.It regard building, residential quarters, industrial area, City complex, large electricity consumer etc. as node, can incite somebody to action
Each node is a piece of using electric system connection, it is made to connect into city distributed energy net.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, and the present embodiment will remove second heat exchanger 2, by auxiliary circulation system
In the work hot gas inlet of jet heat pump 5 connect with the defeated hot outlet end of first heat exchanger 1, specifically as shown in figure 5,
Give first heat exchanger 1 valve in parallel simultaneously.The external recovery waste heat uses air, when ambient air temperature reaches 30
Degree left and right is just needed using air conditioner refrigerating, and liquid nitrogen and air are carried out hot friendship using heat exchanger by the present embodiment major circulatory system
It changes, so that air cooling-down, liquid nitrogen is heated to form nitrogen, and the work of steam turbine 3 can be made to drive engine power generation, led to again after air cooling-down
Passing through fan, which is blown in air, to cool down, to realize the effect of refrigeration.Air energy power-generating system can provided by the implementation case
The occasion or right that all need to generate electricity or freeze for building, residential quarters, industrial district, City complex, large electricity consumer etc.
As.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the invention
In enclosing.
Claims (8)
1. a kind of low parameter heat recovery system, it is characterised in that: including the major circulatory system for generating electricity or doing work and for obtaining
The auxiliary circulation system for taking and maintaining low-temperature energy sources, by control major circulatory system and auxiliary circulation system so that cryogenic fluid
The temperature difference is formed between liquid and external recovery waste heat to realize that electric power exports；
Wherein, the major circulatory system includes the sequentially connected fluid reservoir (8) equipped with working medium liquid, working medium pump (7), regenerator
(6), first heat exchanger (1), steam turbine (3) and generator (4)；
The auxiliary circulation system includes the second heat exchanger (2) connecting with regenerator (6) and sequentially connected steam turbine
(3), fluid reservoir (8), jet heat pump (5) and regenerator (6), the second heat exchanger (2) also connect with jet heat pump (5),
Regenerator (6) is connect with fluid reservoir (8)；
The first heat exchanger (1) and second heat exchanger (2) are respectively connected with external recovery waste heat.
2. low parameter heat recovery system according to claim 1, it is characterised in that: the working medium liquid includes liquid nitrogen, liquid
One of air, R410A refrigerant, liquid carbon dioxide, liquified hydrogen, liquid helium.
3. low parameter heat recovery system according to claim 1, it is characterised in that: the first heat exchanger (1) and
Two heat exchangers (2) are contraflow heat exchanger.
4. a kind of low parameter heat recovery method, it is characterised in that include the following steps:
(1) by the working medium liquid extraction in fluid reservoir (8) and pressurized delivered is to regenerator (6), working medium liquid of the regenerator (6) to low temperature
Heat exchange is carried out, the working medium liquid by heat exchange carries out hot friendship in inflow first heat exchanger (1) and external recovery waste heat again
It changes, so that working medium liquid expansion stroke high temperature and high pressure gas is flowed into steam turbine (3) and drive generator (4) power generation or acting；
(2) steam exhaust of steam turbine (3) outflow flows into fluid reservoir (8) and carries out gas-liquid separation, and liquid is mixed with working medium liquid, gas
It is mixed after jet heat pump (5) sucking with the high pressure gas of the output of second heat exchanger (2), mixed medium temperature and medium pressure working medium gas
Return channel is interior again and carries out heat exchange with the working medium liquid in pressurized delivered to regenerator (6) for body, and the working medium liquid after cooling is flowing back to
It holds in liquid reserve tank.
5. a kind of low parameter heat recovery system according to claim 1 is in waste heat pollution processing and the application of power field.
6. a kind of low parameter heat recovery system according to claim 1 is in the application of refrigerating field.
7. a kind of low parameter heat recovery system according to claim 1 is in the application for generating electricity and freezing in coproduction.
8. a kind of low parameter heat recovery system according to claim 1, it is characterised in that: the low parameter heat recovery system
It is the application that node is connected into city distributed energy net using electric system for node.
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| CN201910211090.1A CN109763870A (en) | 2019-03-20 | 2019-03-20 | A kind of low parameter heat recovery system |
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| CN201910211090.1A CN109763870A (en) | 2019-03-20 | 2019-03-20 | A kind of low parameter heat recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066841A1 (en) * | 2022-09-30 | 2024-04-04 | 李文辉 | Sealed tail-vapor recovery vapor power system |
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| CN107882603A (en) * | 2017-12-12 | 2018-04-06 | 吴加林 | Construct low-temperature receiver energy-recuperation system, heat engine system and energy reclaiming method |
| CN209539413U (en) * | 2019-03-20 | 2019-10-25 | 潘彦伯 | A kind of low parameter heat recovery system |
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2019
- 2019-03-20 CN CN201910211090.1A patent/CN109763870A/en active Pending
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| RU2051285C1 (en) * | 1992-06-09 | 1995-12-27 | Производственное объединение энергетики и электрификации "Брестэнерго" | Gas turbine plant |
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| WO2024066841A1 (en) * | 2022-09-30 | 2024-04-04 | 李文辉 | Sealed tail-vapor recovery vapor power system |
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