CN107975965A - Metal hydride refrigeration system and its control method - Google Patents
Metal hydride refrigeration system and its control method Download PDFInfo
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- CN107975965A CN107975965A CN201610921379.9A CN201610921379A CN107975965A CN 107975965 A CN107975965 A CN 107975965A CN 201610921379 A CN201610921379 A CN 201610921379A CN 107975965 A CN107975965 A CN 107975965A
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- reactor
- heat exchanger
- refrigerating medium
- metal hydride
- heat
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Classifications
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- 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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/09—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being hydrogen desorbed from a hydride
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
- F25B49/043—Operating continuously
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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]
- Y02B30/62—Absorption based systems
Abstract
The present invention provides a kind of metal hydride refrigeration system and its control method.The control method of wherein metal hydride refrigeration system includes：Obtain reaction time and the internal pressure for carrying out exothermic first reactor or the metal hydride in second reactor；Judge whether the reaction time is greater than or equal to preset time threshold, and internal pressure is less than preset pressure threshold value；And if so, hydrogen flow direction in adjustment first reactor and second reactor, and drives four threeway Vavle switching refrigerating medium pipeline connection first reactors, second reactor and First Heat Exchanger, the state of the second heat exchanger.The solution of the present invention, First Heat Exchanger is set to keep connecting with carrying out exothermic first reactor or second reactor using four triple valves, and make the second heat exchanger keep connecting with the first reactor or second reactor absorbed heat, make full use of the work efficiency of reactor.
Description
Technical field
The present invention relates to refrigeration plant, more particularly to a kind of metal hydride refrigeration system and its control method.
Background technology
At present, people are in the needs for solving energy crisis and environmental protection, increasingly pay attention to the research to Hydrogen Energy and answer
With hydrogen has the advantages that unit mass calorific capacity is high, derives from a wealth of sources, clean and effective.Under certain temperature and pressure, metallic hydrogen
Compound (also referred to as hydrogen-storage alloy) under certain temperature and pressure, being capable of reversible absorption, storage, release hydrogen.Metal hydride
Heat release when reaction characteristics between hydrogen is inhale hydrogen, heat absorption are to release hydrogen, no matter hydrogen abstraction reaction or hydrogen discharge reaction, with
Temperature, pressure and the alloying component of system are related.The fuel factor reacted between metal hydride and hydrogen can pass through tune
The flow direction of section hydrogen reacts the direction of progress to control, and realizes the conversion of thermal energy.
Above-mentioned response characteristic causes metal hydride to be widely used in energy Conversion and Utilization field, the prior art
In there are some metal hydride refrigeration systems, these systems have environmental protection peace as a kind of novel heat converting system
The advantages of complete mute, but there is also some problems, promoting the use of for this kind of refrigeration system is have impact on, metal hydride needs
Alternately inhale hydrogen and put hydrogen, cause to be only capable of intermittent refrigeration, heating efficiency is relatively low.
The content of the invention
It is an object of the present invention to provide a kind of to realize the metal hydride refrigeration system persistently freezed.
The present invention one is further objective is that the thermal efficiency of metal hydride refrigeration system will be improved.
The present invention another further objective is that to simplify the control process of metal hydride refrigeration system.
Especially, the present invention provides a kind of metal hydride refrigeration system, it includes：First reactor and the second reaction
Device, is filled with metal hydride inside it, to utilize the suction hydrogen and dehydrogenation reaction of metal hydride to carry out heat release or heat absorption；Electricity
Chemical compression set, is arranged between first reactor and second reactor, is configured to according to the exothermic first reactor of progress
Or in the reaction time of the metal hydride in second reactor and internal pressure adjustment first reactor and second reactor
Hydrogen flows to, so that first reactor and second reactor alternately heat release and heat absorption respectively；And refrigerating medium circulator,
It is respectively communicated with First Heat Exchanger, the second heat exchanger, refrigerating medium pipeline and four triple valves, wherein refrigerating medium pipeline
One reactor, second reactor and First Heat Exchanger, the second heat exchanger, four triple valves are connected with refrigerating medium pipeline, and are matched somebody with somebody
Being set to makes First Heat Exchanger keep connecting with carrying out exothermic first reactor or second reactor, and keeps the second heat exchanger
Connected with the first reactor or second reactor absorbed heat.
Alternatively, which further includes：Regulated power supply, is configured to controllably fill to electrochemical compression
Offer direct current is put, the polarity of direct current is according to the metal hydride carried out in exothermic first reactor or second reactor
Reaction time and internal pressure determine.
Alternatively, four triple valves include：First triple valve, the refrigerating medium that its liquid inlet is connected to first reactor go out
Mouthful, two outlet end is respectively connected to the refrigerating medium entrance of First Heat Exchanger and the second heat exchanger, and the second triple valve, it enters liquid
End is connected to the refrigerating medium outlet of second reactor, two outlet end is respectively connected to First Heat Exchanger and the second heat exchanger
Refrigerating medium entrance, so that the first triple valve and the refrigerating medium inflow side of the second threeway Vavle switching First Heat Exchanger and the second heat exchanger
To；And the 3rd triple valve, its liquid inlet are connected to the refrigerating medium outlet of First Heat Exchanger, two outlet end is respectively connected to
The refrigerating medium entrance of first reactor and second reactor, the 4th triple valve, its liquid inlet are connected to the refrigerating of the second heat exchanger
Agent exports, its outlet end is respectively connected to the refrigerating medium entrance of first reactor and second reactor so that the 3rd triple valve and
The refrigerating medium of 4th threeway Vavle switching First Heat Exchanger and the second heat exchanger flows out direction.
Alternatively, which further includes：First pump, is arranged at the refrigerating medium outlet of first reactor
On refrigerating medium pipeline between the first triple valve, the refrigerating medium for being configured as outflow first reactor provides power；And the
Two pumps, are arranged on the refrigerating medium pipeline between the refrigerating medium outlet of second reactor and the second triple valve, are configured as flowing out
The refrigerating medium of second reactor provides power.
According to another aspect of the present invention, a kind of control method of metal hydride refrigeration system is additionally provided.Wherein
Metal hydride refrigeration system includes：Utilize the first reaction for inhaling hydrogen and dehydrogenation reaction progress heat release or heat absorption of metal hydride
Device and second reactor, the electrochemical compression device being arranged between first reactor and second reactor, have first to change
Hot device, the second heat exchanger, the refrigerating medium circulator of refrigerating medium pipeline and four triple valves, and the metal hydride freezes
The control method of system includes：When obtaining the reaction for carrying out exothermic first reactor or the metal hydride in second reactor
Between and internal pressure；Judge whether the reaction time is greater than or equal to preset time threshold, and internal pressure is less than default pressure
Force threshold；And if so, hydrogen flow direction in adjustment first reactor and second reactor, so that first reactor and second anti-
Device alternately heat release and heat absorption respectively is answered, and drives four threeway Vavle switching refrigerating medium pipeline connection first reactors, the
Two reactors and First Heat Exchanger, the state of the second heat exchanger, so that First Heat Exchanger keeps anti-with progress exothermic first
Answer device or second reactor to connect, and make the second heat exchanger keep connecting with the first reactor or second reactor absorbed heat
It is logical.
Alternatively, changed in switching refrigerating medium pipeline connection first reactor, second reactor and First Heat Exchanger, second
Further included after the step of state of hot device：It will reset in the reaction time.
Alternatively, metal hydride refrigeration system further includes the regulated power supply that direct current is provided to electrochemical compression device,
And adjusting the step of hydrogen in first reactor and second reactor flows to includes：It is true according to reaction time and internal pressure
The polarity of direct current is determined, to adjust the direction of electrochemical compression device transmission hydrogen.
Alternatively, the step of determining the polarity of direct current according to reaction time and internal pressure includes：It is big in the reaction time
In or equal to preset time threshold, and in the case that internal pressure is less than preset pressure threshold value, switch the voltage pole of direct current
Property direction, be less than preset time threshold in the reaction time, or in the case that internal pressure is greater than or equal to preset pressure threshold value, protect
Hold the polarity of voltage direction of direct current.
The metal hydride refrigeration system of the present invention, sets two reactors and electrochemical compression device, utilizes the electrification
Learn compression set, the hydrogen flow direction of two reactors can be adjusted, make two reactors, one progress hydrogen abstraction reaction, another into
Row dehydrogenation reaction, alternately heat release and heat absorption, and exchanged heat by refrigerating medium circulator with reactor, realize and hold
Continuous refrigeration, makes full use of the thermal energy transfer capability of reactor.In addition, also setting up First Heat Exchanger, the second heat exchanger, four are utilized
Threeway Vavle switching First Heat Exchanger, the second heat exchanger and first reactor or the connection relation of second reactor so that first changes
Hot device discharges heat all the time, the second heat exchanger freezes all the time, so as to make full use of the work efficiency of reactor.
Further, metal hydride refrigeration system of the invention, can make electrochemical compression device by regulated power supply
Controllably reactor is adjusted, according to the reaction time for carrying out the metal hydride in exothermic reactor and internal pressure
Adjusted in real time, control is flexible.
In addition, present invention also offers the control method for above-mentioned metal hydride refrigeration system, carried out by obtaining
The reaction time of metal hydride in exothermic reactor and internal pressure, control metal hydride refrigeration system automatically
System, ensures its reliability of operation.
The metal hydride refrigeration system of the present invention can be applied to a variety of occasions, such as building or the vehicles
The refrigerating such as air conditioner, refrigerator equipment, heating equipment etc..
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of detailed description of the present invention by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the structure diagram of metal hydride refrigeration system according to an embodiment of the invention；
Fig. 2 is the schematic diagram of metal hydride refrigeration system according to an embodiment of the invention；
Fig. 3 shows another working status of the metal hydride refrigeration system shown in Fig. 2；
Fig. 4 is the schematic diagram of the control method of metal hydride refrigeration system according to an embodiment of the invention；And
Fig. 5 is the flow diagram of the control method of metal hydride refrigeration system according to an embodiment of the invention.
Embodiment
Fig. 1 is the schematic diagram of metal hydride refrigeration system 10 according to an embodiment of the invention.The metal
Hydride refrigeration system 10 is general to be included：First reactor 210, second reactor 220, electrochemical compression device
230th, refrigerating medium circulator 100.
The inside of first reactor 210 and second reactor 220 is separately filled with metal hydride, to utilize metal hydride
The suction hydrogen and dehydrogenation reaction of thing carry out heat release or heat absorption.In the present embodiment, first reactor 210 and second reactor 220 can
To use identical reactor, metal hydride of filling can select to require to select according to the refrigeration of use occasion in it, example
Such as lanthanon hydrogen storage alloy, titanium base hydrogen storage alloy, magnesium microalloying, the reaction of metal hydride is may be referred in selection
Heat content, hydrogen-sucking amount, anti-poisoning performance, working life etc..The operation principle of first reactor 210 and second reactor 220 is：By
Strainer is separated out hydrogen runner, and by strainer and metal hydride Mass and heat transfer occurs for hydrogen, and the heat of generation is by exterior load
Cryogen is taken away.First reactor 210 and second reactor 220 can use but be not limited to following reactor：Drum type brake reactor,
Fin pipe reactor, shell and tube thermal reactor, capillary type reactor.
Electrochemical compression device (or being electrochemistry hydrogen pump) 230, is arranged at first reactor 210 and second reactor
Between 220, it is configured to according to the reaction for carrying out the metal hydride in exothermic first reactor 210 or second reactor 220
Time and internal pressure, adjust the hydrogen flow direction in first reactor 210 and second reactor 220.Electrochemical compression device 230
Hydrogen directional transmissions are realized by internal electric field, that is, hydrogen fed to from the reactor for carrying out dehydrogenation reaction carry out inhaling hydrogen it is anti-
The reactor answered, achievees the purpose that to adjust both sides Hydrogen Vapor Pressure and concentration.In some optional embodiments, it can pre-set
There are preset time threshold T and preset pressure threshold value P, carrying out the gold in exothermic first reactor 210 or second reactor 220
The reaction time for belonging to hydride reaches preset time threshold T, and carries out exothermic first reactor 210 or second reactor
When 220 internal pressure is less than preset pressure threshold value P, the hydrogen in first reactor 210 and second reactor 220 can be adjusted
Flow direction, makes hydrogen reverse flow.Wherein preset time threshold T and preset pressure threshold value P can according to the volumes of two reactors,
The quantity of interior metal hydride, the flow velocity of hydrogen are configured.Volume, the number of interior metal hydride in two reactors
In the case that amount, the flow velocity of hydrogen are certain, inventor can be obtained according to many experiments needed for metal hydride reaction completely
Reaction time, and be configured as preset time threshold T, it can also obtain react completely in exothermic reactor
Internal pressure afterwards, and be configured as preset pressure threshold value P.The setting preset time threshold and preset pressure threshold value
Process completed before dispatching from the factory, i.e. user is when using metal hydride refrigeration system 10, preset time threshold and default pressure
Force threshold has been pre-set, and metal hydride refrigeration system 10 can be automatic according to preset time threshold and preset pressure threshold value
Operation.
The operation principle of electrochemical compression device (or being electrochemistry hydrogen pump) 230 is：When the air-flow containing hydrogen enters
Behind the anode chamber of electrochemical compression device, hydrogen molecule can pass through gas diffusion layers and reach Catalytic Layer, in reacting gas, catalyst
Oxidation reaction occurs with the three phase boundary of dielectric film, hydrogen analysis is oxidized to proton and electronics, subsequent proton is additional
Catalytic Layer and porous diffusion layer and the bipolar plates of conduction are passed through toward cathode transmission, electronics by dielectric film under the action of voltage
It is transmitted to external circuit.The anode and cathode reaction effect of electrochemical compression device 230 is：Hydrogen molecule is from the relatively low anode gas of hydrogen content
Body is pumped to cathode, becomes the higher cathode gas of hydrogen content.The hydrogen purity of 230 cathode of electrochemical compression device output is high,
And High voltage output can be achieved in the case of without mechanical compressor.So as to which electrochemical compression device 230 connects cathode electricity
The reactor of side (i.e. anode) connection of pressure carries out dehydrogenation reaction, and electrochemical compression device 230 connects the one of cathode voltage
The reactor of side (i.e. cathode) connection carries out hydrogen abstraction reaction.Therefore, can by adjusting the power supply polarity of electrochemical compression device 230
To change the outbound course of hydrogen, pressure at both sides can be adjusted by the DC voltage value for adjusting electrochemical compression device 230
Difference, and DC current flow value can also influence defeated hydrogen speed.
Refrigerating medium circulator 100 has First Heat Exchanger 111, the second heat exchanger 112, refrigerating medium pipeline 120 and four
A triple valve, wherein refrigerating medium pipeline 120 are respectively communicated with first reactor 210, second reactor 220 and First Heat Exchanger
111st, the second heat exchanger 112, four triple valves are connected with refrigerating medium pipeline 120, and be configured to make First Heat Exchanger 111 keep with
Carry out exothermic first reactor 210 or second reactor 220 connecting, and the second heat exchanger 112 is kept and is absorbed heat
First reactor 210 or second reactor 220 connect.So as to which refrigerating medium circulator 100 can make refrigerating medium produce reactor
Raw heat is carried to First Heat Exchanger 111, the second heat exchanger 112, the week with First Heat Exchanger 111, the second heat exchanger 112
Collarette border carries out heat exchange, realizes refrigeration or the purpose of heating.
The metal hydride refrigeration system 10 of the present embodiment is also provided with regulated power supply 240, for electrochemistry pressure
Compression apparatus 230 is powered, which is configured to controllably provide direct current to electrochemical compression device 230, direct current
Polarity is according to the reaction time for carrying out the metal hydride in exothermic first reactor 210 or second reactor 220 and inside
Pressure determines.After the polarity of voltage conversion of regulated power supply 240, the direction that electrochemical compression device 230 transmits hydrogen mutually strains
Change, such as during the hydrogen of 210 dehydrogenation of first reactor feeds to the progress hydrogen abstraction reaction of second reactor 220, if electric
The input voltage dipole inversion of chemical compression set 230, hydrogen flow direction are changed to feed to first reactor from second reactor 220
210, so that second reactor 220 carries out dehydrogenation reaction, and first reactor 210 carries out hydrogen abstraction reaction.By making first
Reactor 210 and second reactor 220 work alternatively, it is ensured that the continuous firing of metal hydride refrigeration system 10.
Fig. 2 is the schematic diagram of metal hydride refrigeration system 10 according to another embodiment of the present invention.In the reality
Apply in example, metal hydride refrigeration system 10 is provided with four triple valves：First triple valve 131, the second triple valve the 132, the 3rd
133 and the 4th triple valve 134 of triple valve, each triple valve have a liquid inlet and two outlet ends.
Wherein, the first triple valve 131, its liquid inlet are connected to the refrigerating medium outlet of first reactor, two outlet end
The refrigerating medium entrance of First Heat Exchanger and the second heat exchanger, the second triple valve 132 are respectively connected to, its liquid inlet is connected to second
The refrigerating medium outlet of reactor, two outlet end are respectively connected to the refrigerating medium entrance of First Heat Exchanger and the second heat exchanger,
So that the first triple valve 131 and the refrigerating medium inflow direction of the second triple valve 132 switching First Heat Exchanger and the second heat exchanger.
3rd triple valve 133, its liquid inlet are connected to the refrigerating medium outlet of First Heat Exchanger, two outlet end connects respectively
The refrigerating medium entrance of first reactor and second reactor, the 4th triple valve 134 are connected to, its liquid inlet is connected to the second heat exchanger
Refrigerating medium outlet, its outlet end is respectively connected to the refrigerating medium entrance of first reactor and second reactor, so that the three or three
133 and the 4th triple valve 134 of port valve switches the refrigerating medium outflow direction of First Heat Exchanger and the second heat exchanger.Four used above
Triple valve is only a kind of optional implementation for the refrigerating medium flow direction for switching 111 and second heat exchanger 112 of First Heat Exchanger, one
In a little other embodiments, the switching in refrigerating medium direction can be realized by the structure of other pipelines and valve.
The metal hydride refrigeration system 10 of the present embodiment is also provided with the first pump 141 and the second pump 142, wherein the
One pump 141 can be arranged on the refrigerating medium pipeline between the refrigerating medium outlet of first reactor 210 and the first triple valve 131,
The refrigerating medium for being configured as outflow first reactor 210 provides power.Second pump 142 can be arranged at second reactor 220
Refrigerating medium is exported on the refrigerating medium pipeline between the second triple valve 132, is configured as the refrigerating medium of outflow second reactor 220
Power is provided.The pumping flow velocity of wherein first pump 141 and the second pump 142 controlled can be adjusted.First pump 141 is arranged at the
On refrigerating medium pipeline between the refrigerating medium outlet of one reactor 210 and the first triple valve 131, the second pump 142 is arranged at second
On refrigerating medium pipeline between the refrigerating medium outlet of reactor 220 and the second triple valve 132, not only have and utilize whole metal hydride
The integral layout of thing refrigeration system 10, and easy to two pump installations, be installed on before two valves, be more conducive to refrigerating medium with
Appropriate flow velocity flows into the refrigerating medium pipeline of connection heat exchanger.
Fig. 2 also shows the flow direction of refrigerating medium in refrigerating medium circulator 100, wherein solid arrow and dotted arrow difference
For flow through the direction of the refrigerating medium of First Heat Exchanger 111 and flow through the second heat exchanger 112 refrigerating medium direction.Shown in Fig. 2
Metal hydride refrigeration system 10 working status under, the 3rd triple valve 133 leads the refrigerating medium that First Heat Exchanger 111 flows out
First reactor 210 is passed to, into after crossing heat exchange, refrigerating medium is led back to First Heat Exchanger 111 by the first triple valve 131, realizes one
Group refrigerating medium circulation.The refrigerating medium that second heat exchanger 112 flows out is conducted to second reactor 220 by the 4th triple valve 134, into mistake
After heat exchange, refrigerating medium is led back to the second heat exchanger 112 by the second triple valve 132, realizes another group of refrigerating medium circulation.
In this process, first reactor 210 can carry out hydrogen abstraction reaction, and to discharge heat release, second reactor 220 can be with
Dehydrogenation reaction is carried out, to absorb heat.First Heat Exchanger 111 is by the heat transfer of first reactor 210 to its surrounding environment, and
The cold of second reactor 220 is transferred to its surrounding environment by two heat exchangers 112.
Fig. 3 shows another working status of the metal hydride refrigeration system 10 shown in Fig. 2, in the figure, solid arrow
The direction for flowing through the refrigerating medium of First Heat Exchanger 111 and the load for flowing through the second heat exchanger 112 are still represented respectively with dotted arrow
The direction of cryogen.Under the working status of the metal hydride refrigeration system 10 shown in Fig. 3, the 3rd triple valve 133 is changed first
The refrigerating medium that hot device 111 flows out is conducted to second reactor 220, and into after crossing and exchange heat, refrigerating medium is led back to the by the second triple valve 132
One heat exchanger 111, realizes one group of refrigerating medium circulation.The refrigerating medium that 4th triple valve 134 flows out the second heat exchanger 112 turns on
To first reactor 210, into after crossing heat exchange, refrigerating medium is led back to the second heat exchanger 112 by the first triple valve 131, is realized another
Group refrigerating medium circulation.
In this process, first reactor 210 can carry out dehydrogenation reaction, and to absorb heat, second reactor 220 can be with
Hydrogen abstraction reaction is carried out, to discharge heat release.First Heat Exchanger 111 is by the heat transfer of second reactor 220 to its surrounding environment, and
The cold of first reactor 210 is transferred to its surrounding environment by two heat exchangers 112.
By above structure, First Heat Exchanger 111 can be made to keep connecting with the exothermic reactor of progress, carry out all the time to
Outer release heat, and make the second heat exchanger 112 keep connecting with the reactor to absorb heat, carry out all the time to environment drop where it
Temperature.
The metal hydride refrigeration system 10 of the present embodiment, can flexibly apply to air-conditioning system, refrigerating equipment, adopt
In heating equipment, realize and persistently supply heat and cold.
The present embodiment additionally provides a kind of control method of metal hydride refrigeration system 10.The control method can be to upper
The metal hydride refrigeration system 10 for stating any embodiment is controlled, to ensure that the stabilization of metal hydride refrigeration system 10 can
By operation.Fig. 4 is the schematic diagram of the control method of metal hydride refrigeration system 10 according to an embodiment of the invention, the gold
Belonging to the control method of hydride refrigeration system 10 can include in general manner：
Step S402, obtains and carries out the anti-of exothermic first reactor 210 or the metal hydride in second reactor 220
Between seasonable and internal pressure；
Step S404, judges whether the reaction time is greater than or equal to preset time threshold, and whether internal pressure is less than
Preset pressure threshold value, if so, performing step S406, step S402 is performed if it is not, returning；
Step S406, adjusts the hydrogen flow direction in first reactor 210 and second reactor 220, and drives four threeways
Vavle switching refrigerating medium pipeline connection first reactor 210, second reactor 220 and First Heat Exchanger 111, the second heat exchanger
112 state.
In above step, first reactor 210 or the metal hydride in second reactor 220 is anti-in step S402
Between seasonable, the timing since when regulated power supply 240 provides direct current to electrochemical compression device 230.
Step S404 can be by could be adjusted to realize to regulated power supply 240, and specifically, step S404 can include：
According to the reaction time and internal pressure for carrying out the metal hydride in exothermic first reactor 210 or second reactor 220
Power determines the polarity of direct current, to adjust the direction that electrochemical compression device 230 transmits hydrogen.
The hydrogen flow direction in first reactor 210 and second reactor 220 is adjusted in step S406, the first reaction can be made
Device 210 and the alternately heat release and heat absorption respectively of second reactor 220.Drive four threeway Vavle switching refrigerating medium pipeline connections
The state of one reactor 210, second reactor 220 and First Heat Exchanger 111, the second heat exchanger 112, can make the first heat exchange
Device 111 keeps connecting with carrying out exothermic first reactor 210 or second reactor 220, and make the second heat exchanger 112 keep and
The first reactor 210 or second reactor 220 absorbed heat connect.
Above-mentioned control method can carry out reaction time of the metal hydride in exothermic reactor and interior by detecting
Whether portion's pressure reaches respective predetermined threshold value, and metal hydride refrigeration system 10 is controlled automatically, ensures its operation
Reliability.In the above-mentioned methods, preset time threshold and preset pressure threshold value can be according to metal hydride refrigeration systems 10
Metal hydride content in interior hydrogen and reactor is pre-set, and the process of the setting predetermined threshold value is dispatching from the factory it
When using metal hydride refrigeration system 10, preset time threshold and preset pressure threshold value are advance for preceding completion, i.e. user
Set, metal hydride refrigeration system 10 can be according to preset time threshold and preset pressure threshold value automatic running.
Fig. 5 is the flow signal of the control method of metal hydride refrigeration system 10 according to an embodiment of the invention
Figure, the flow can be used for being controlled the metal hydride refrigeration system 10 shown in Fig. 2.The metal hydride refrigeration system 10
The flow of control method can include：
Step S502, control regulated power supply 240 provide direct current to electrochemical compression device 230, to utilize the first reaction
The suction hydrogen and dehydrogenation reaction heat release or heat absorption of device 210 and the metal hydride in second reactor 220；
Step S504, obtains and carries out the anti-of exothermic first reactor 210 or the metal hydride in second reactor 220
Between seasonable；
Step S506, judges whether the reaction time is greater than or equal to preset time threshold, if so, step S508 is performed, if
It is no, return and perform step S504；
Step S508, obtains the internal pressure for carrying out exothermic first reactor 210 or second reactor 220；
Step S510, judges whether internal pressure is less than preset pressure threshold value, if so, step S512 is performed, if it is not, returning
Perform step S508；
Step S512, switches the polarity of voltage direction of direct current, and switches 111 and second heat exchanger 112 of First Heat Exchanger
Refrigerating medium flow direction；
Step S514, will reset in the reaction time, and returns and perform step S504.
Wherein, switch the polarity of voltage direction of direct current in step S512, it is anti-that first reactor 210 and second can be adjusted
The hydrogen in device 220 is answered to flow to.Switch the refrigerating medium flow direction of 111 and second heat exchanger 112 of First Heat Exchanger, first can be made to change
Hot device 111 keeps connecting with carrying out exothermic first reactor 210 or second reactor 220, and keeps the second heat exchanger 112
Connected with the first reactor 210 or second reactor 220 absorbed heat.
An instantiation is introduced below：
Regulated power supply 240 is controlled to provide direct current to electrochemical compression device 230 first, to utilize first reactor 210
The hydrogen abstraction reaction heat release of interior metal hydride, the dehydrogenation reaction heat absorption of the metal hydride in second reactor 220.Control the
The refrigerating medium of one heat exchanger 111 and the second heat exchanger 112 flows to, so that First Heat Exchanger 111 is with carrying out exothermic first reaction
Device 210 connects, and the second heat exchanger 112 is connected with the second reactor 220 absorbed heat.And start recording first reactor 210
In the reaction time of interior metal hydride, when reaching preset time threshold in the reaction time, obtain the inside of first reactor 210
Pressure, when internal pressure is less than preset pressure threshold value, switches the polarity of voltage direction of direct current, to adjust first reactor
210 and second reactor 220 in hydrogen flow direction so that metal hydride in first reactor 210 carries out dehydrogenation reaction suction
Heat, the metal hydride in second reactor 220 carries out hydrogen abstraction reaction heat release, and utilizes four threeway Vavle switching First Heat Exchangers
111 and second heat exchanger 112 refrigerating medium flow direction so that First Heat Exchanger 111 connects with the exothermic second reactor 220 of progress
It is logical, and the second heat exchanger 112 is connected with the first reactor 210 absorbed heat.Then it will reset in the reaction time, record again
In the reaction time, preset time threshold is reached in the reaction time and to carry out exothermic 220 internal pressure of second reactor small again
When preset pressure threshold value, switch 111 and second heat exchanger 112 of polarity of voltage direction and First Heat Exchanger of direct current again
Refrigerating medium flow direction, and so on, circulation perform.
Another instantiation is introduced below：
Regulated power supply 240 is controlled to provide direct current to electrochemical compression device 230 first, to utilize first reactor 210
The dehydrogenation reaction of interior metal hydride is absorbed heat, the hydrogen abstraction reaction heat release of the metal hydride in second reactor 220.Control the
The refrigerating medium of one heat exchanger 111 and the second heat exchanger 112 flows to, so that First Heat Exchanger 111 is with carrying out exothermic second reaction
Device 220 connects, and the second heat exchanger 112 is connected with the first reactor 210 absorbed heat.And start recording second reactor 220
In the reaction time of interior metal hydride, when reaching preset time threshold in the reaction time, obtain the inside of second reactor 220
Pressure, when internal pressure is less than preset pressure threshold value, switches the polarity of voltage direction of direct current, to adjust first reactor
210 and second reactor 220 in hydrogen flow direction so that metal hydride in first reactor 210 carries out hydrogen abstraction reaction and puts
Heat, the metal hydride in second reactor 220 carries out dehydrogenation reaction heat absorption, and utilizes four threeway Vavle switching First Heat Exchangers
111 and second heat exchanger 112 refrigerating medium flow direction so that First Heat Exchanger 111 connects with the exothermic first reactor 210 of progress
It is logical, and the second heat exchanger 112 is connected with the second reactor 220 absorbed heat.Then it will reset in the reaction time, record again
In the reaction time, preset time threshold is reached in the reaction time and to carry out exothermic 210 internal pressure of first reactor small again
When preset pressure threshold value, switch 111 and second heat exchanger 112 of polarity of voltage direction and First Heat Exchanger of direct current again
Refrigerating medium flow direction, and so on, circulation perform.
It should be noted that the reaction time of metal hydride in first reactor 210 or second reactor 220 is not
, can be in first reactor 210 or the if metal hydride refrigeration system 10 receives shutdown command when reaching preset time threshold
The reaction time of metal hydride in two reactors 220 completes automatic shutdown after preset time threshold, so can be with guarantee fund
Belong to hydride refrigeration system 10 when starting shooting next time, at the metal hydride in first reactor 210 or second reactor 220
In unreacted original state, further ensure metal hydride and fully reacted in preset time threshold.
In above example, First Heat Exchanger 111 is kept with carrying out exothermic first reactor 210 or second reactor
220 connections, and make the second heat exchanger 112 keep connecting with the first reactor 210 or second reactor 220 absorbed heat, and
Non- limitation of the invention, in other embodiments, the first reaction that First Heat Exchanger 111 can keep and absorb heat
Device 210 or second reactor 220 connect, and the second heat exchanger 112 is kept with carrying out exothermic first reactor 210 or the second
Reactor 220 connects.
The control method of the metal hydride refrigeration system 10 of the present embodiment, by obtaining the metal in exothermic reactor
The reaction time of hydride and internal pressure, are controlled metal hydride refrigeration system 10 automatically, ensure its operation can
By property, pass through four threeway Vavle switching First Heat Exchangers 111, the second heat exchanger 112 and first reactor 210 or second reactor
220 connection relation, by it is a kind of it is easy in a manner of realize that First Heat Exchanger 111 discharges heat, the second heat exchanger 112 all the time all the time
Freeze, so as to make full use of the work efficiency of reactor.It can ensure metal hydride refrigeration system using the above method
10 reliablely and stablely run, and lasting carry out heat exchange.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present invention disclosure it is direct
Determine or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (8)
1. a kind of metal hydride refrigeration system, including：
First reactor and second reactor, are filled with metal hydride inside it, to utilize the suction of the metal hydride
Hydrogen and dehydrogenation reaction carry out heat release or heat absorption；
Electrochemical compression device, is arranged between the first reactor and the second reactor, is configured to according to being put
Described in the first reactor of heat or the reaction time of the metal hydride in the second reactor and internal pressure adjustment
Hydrogen flow direction in first reactor and the second reactor, so that the first reactor and second reactor difference
Alternately heat release and heat absorption；And
Refrigerating medium circulator, its with First Heat Exchanger, the second heat exchanger, refrigerating medium pipeline and four triple valves, wherein
The refrigerating medium pipeline is respectively communicated with the first reactor, the second reactor and the First Heat Exchanger, described
Two heat exchangers, four triple valves are connected with the refrigerating medium pipeline, and be configured to make the First Heat Exchanger keep with into
The exothermic first reactor of row or second reactor connection, and second heat exchanger is kept and is absorbed heat
The first reactor or second reactor connection.
2. metal hydride refrigeration system according to claim 1, further includes：
Regulated power supply, is configured to controllably provide direct current to the electrochemical compression device, the polarity of the direct current according to
Carry out the exothermic first reactor or the reaction time of the metal hydride in the second reactor and internal pressure is true
It is fixed.
3. metal hydride refrigeration system according to claim 1, wherein four triple valves include：
First triple valve, its liquid inlet are connected to the refrigerating medium outlet of the first reactor, two outlet end connects respectively
To the refrigerating medium entrance of the First Heat Exchanger and second heat exchanger, the second triple valve, its liquid inlet is connected to described the
The refrigerating medium outlet of two reactors, two outlet end are respectively connected to the load of the First Heat Exchanger and second heat exchanger
Cryogen entrance, so that First Heat Exchanger and second heat exchanger described in first triple valve and the second threeway Vavle switching
Refrigerating medium inflow direction；And
3rd triple valve, its liquid inlet are connected to the refrigerating medium outlet of the First Heat Exchanger, two outlet end connects respectively
To the refrigerating medium entrance of the first reactor and the second reactor, the 4th triple valve, its liquid inlet is connected to described the
The refrigerating medium outlet of two heat exchangers, its outlet end are respectively connected to the refrigerating medium of the first reactor and the second reactor
Entrance, so that the load of First Heat Exchanger and second heat exchanger described in the 3rd triple valve and the 4th threeway Vavle switching
Cryogen flows out direction.
4. metal hydride refrigeration system according to claim 3, further includes：
First pump, the refrigerating medium pipeline being arranged between the refrigerating medium outlet of the first reactor and first triple valve
On, the refrigerating medium for being configured as flowing out the first reactor provides power；And
Second pump, the refrigerating medium pipeline being arranged between the refrigerating medium outlet of the second reactor and second triple valve
On, the refrigerating medium for being configured as flowing out the second reactor provides power.
A kind of 5. control method of metal hydride refrigeration system, wherein the metal hydride refrigeration system includes：Utilize gold
Belong to the suction hydrogen of hydride and dehydrogenation reaction carries out the first reactor and second reactor of heat release or heat absorption, is arranged at described first
Electrochemical compression device between reactor and the second reactor, have First Heat Exchanger, the second heat exchanger, refrigerating medium
The refrigerating medium circulator of pipeline and four triple valves, and the control method includes：
Obtain reaction time for carrying out the exothermic first reactor or the metal hydride in the second reactor and
Internal pressure；
Judge whether the reaction time is greater than or equal to preset time threshold, and the internal pressure is less than preset pressure threshold
Value；And
If so, adjust in the first reactor and the second reactor hydrogen flow direction so that the first reactor and
The second reactor alternately heat release and heat absorption respectively, and drive refrigerating medium pipeline described in four threeway Vavle switchings
The first reactor, the second reactor and the First Heat Exchanger, the state of second heat exchanger are connected, so that
The First Heat Exchanger keeps connecting with carrying out the exothermic first reactor or the second reactor, and makes described second
Heat exchanger keeps connecting with the first reactor absorbed heat or the second reactor.
6. control method according to claim 5, wherein switch first reactor described in the refrigerating medium pipeline connection,
The second reactor and the First Heat Exchanger, second heat exchanger state the step of after further include：
The reaction time is reset.
7. control method according to claim 5, wherein the metal hydride refrigeration system is further included to the electrification
The regulated power supply that compression set provides direct current is learned, and
Adjusting the step of hydrogen in the first reactor and the second reactor flows to includes：
The polarity of the direct current is determined according to the reaction time and the internal pressure, is filled with adjusting the electrochemical compression
Put the direction of transmission hydrogen.
8. control method according to claim 7, wherein, according to determining the reaction time and the internal pressure
The step of polarity of direct current, includes：
It is greater than or equal to preset time threshold in the reaction time, and the internal pressure is less than the feelings of preset pressure threshold value
Under condition, switch the polarity of voltage direction of the direct current,
It is less than the preset time threshold in the reaction time, or the internal pressure is greater than or equal to preset pressure threshold value
In the case of, keep the polarity of voltage direction of the direct current.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113357761A (en) * | 2021-05-20 | 2021-09-07 | 青岛海尔空调器有限总公司 | Steering control method and device for electrochemical refrigeration system and intelligent air conditioner |
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| CN102997484A (en) * | 2012-12-27 | 2013-03-27 | 中国科学院广州能源研究所 | Metal hydride refrigerating device |
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Application publication date: 20180501 |