CN107975967A - Metal hydride refrigeration system and its control method - Google Patents
Metal hydride refrigeration system and its control method Download PDFInfo
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- CN107975967A CN107975967A CN201610921665.5A CN201610921665A CN107975967A CN 107975967 A CN107975967 A CN 107975967A CN 201610921665 A CN201610921665 A CN 201610921665A CN 107975967 A CN107975967 A CN 107975967A
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- reactor
- refrigerating medium
- heat exchanger
- solenoid valve
- metal hydride
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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
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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
- 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 the reaction time of first reactor and/or the metal hydride in second reactor；The hydrogen adjusted according to the reaction time in first reactor and second reactor flows to；The refrigerant temperature that detection is flowed out by the refrigerating medium outlet of the first reactor or second reactor absorbed heat, and judge whether refrigerant temperature is less than preset temperature threshold value；And if so, drive eight electromagnetism 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 eight solenoid 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 anti-according to first reactor and/or second
The hydrogen flow direction in the reaction time adjustment first reactor and second reactor of the metal hydride in device is answered, so that first is anti-
Answer device and second reactor alternately heat release and heat absorption respectively；And refrigerating medium circulator, it is with First Heat Exchanger,
Two heat exchangers, refrigerating medium pipeline and eight solenoid valves, wherein eight solenoid valves are connected with refrigerating medium pipeline, and are configured to basis
Refrigerating medium pipeline is switched by the refrigerant temperature of the refrigerating medium outlet outflow of the first reactor or second reactor absorbed heat
Connect first reactor, second reactor and First Heat Exchanger, the state of the second heat exchanger so that First Heat Exchanger keep with
Exothermic first reactor or second reactor connection is carried out, and the second heat exchanger is kept the first reactor with absorbing heat
Or second reactor connection.
Alternatively, the metal hydride refrigeration system, further includes：Regulated power supply, is configured to controllably to electrochemical compression
Device provides direct current, and the polarity of direct current is according to the reaction of the metal hydride in first reactor and/or second reactor
Time determines.
Alternatively, eight solenoid valves include：First solenoid valve, the refrigerating medium that its liquid inlet is connected to first reactor go out
Mouthful, its outlet end is connected to the refrigerating medium entrance of First Heat Exchanger, second solenoid valve, its liquid inlet is connected to second reactor
Refrigerating medium exports, its outlet end is connected to the refrigerating medium entrance of the second heat exchanger, the 3rd solenoid valve, its liquid inlet is connected to first
The refrigerating medium outlet of heat exchanger, its outlet end are connected to the refrigerating medium entrance of first reactor, the 4th solenoid valve, its liquid inlet connects
The refrigerating medium outlet of the second heat exchanger is connected to, its outlet end is connected to the refrigerating medium entrance of second reactor, the 5th solenoid valve, its
Liquid inlet is connected to the refrigerating medium outlet of First Heat Exchanger, its outlet end is connected to the refrigerating medium entrance of second reactor, and the 6th
Solenoid valve, its liquid inlet are connected to the refrigerating medium outlet of second reactor, its outlet end is connected to the refrigerating medium of the second heat exchanger
Entrance, the 7th solenoid valve, its liquid inlet are connected to the refrigerating medium outlet of the second heat exchanger, its outlet end is connected to first reactor
Refrigerating medium entrance, the 8th solenoid valve, its liquid inlet is connected to the refrigerating medium outlet of first reactor, its outlet end is connected to the
The refrigerating medium entrance of two heat exchangers, to be all turned in the first solenoid valve, second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve,
And the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, the 8th solenoid valve Close All or the first solenoid valve, the second electricity
Magnet valve, the 3rd solenoid valve, the 4th solenoid valve Close All, and the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, the 8th
Switch the refrigerating medium flow direction of First Heat Exchanger and the second heat exchanger when solenoid valve is all turned on.
Alternatively, which further includes：First pump, is arranged at the refrigerating medium outlet of first reactor
On refrigerating medium pipeline between the first solenoid 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 second solenoid 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 eight solenoid valves, and the metal hydride freezes
The control method of system includes：Obtain the reaction time of first reactor and/or the metal hydride in second reactor；According to
Reaction time adjusts the hydrogen flow direction in first reactor and second reactor, so that first reactor and second reactor difference
Alternately heat release and heat absorption；The load that detection is flowed out by the refrigerating medium outlet of the first reactor or second reactor absorbed heat
Refrigerant temperature, and judge whether refrigerant temperature is less than preset temperature threshold value；And if so, drive eight electromagnetism Vavle switching refrigeratings
Agent pipeline connection first reactor, second reactor and First Heat Exchanger, the state of the second heat exchanger, so that First Heat Exchanger
Keep connecting with carrying out exothermic first reactor or second reactor, and make the holding of the second heat exchanger and absorb heat first
Reactor or second reactor connection.
Alternatively, further included after the step of hydrogen in first reactor and second reactor flows to is adjusted：By
The reaction time of metal hydride in one reactor and second reactor resets.
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：Direct current is determined according to the reaction time
Polarity, to adjust the direction of electrochemical compression device transmission hydrogen.
Alternatively, direct current is determined according to the reaction time of the metal hydride in first reactor and/or second reactor
The step of polarity of electricity, includes：In the case where the reaction time is less than predetermined period, the polarity of voltage direction of direct current is kept,
In the case that reaction time reaches predetermined period, switch 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, eight are utilized
Electromagnetism 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, is adjusted in real time according to the reaction time of the metal hydride in two reactors, is controlled
System is flexible.
In addition, present invention also offers the control method for above-mentioned metal hydride refrigeration system, by obtaining two
In the reaction time of metal hydride in reactor, be controlled metal hydride refrigeration system automatically, ensures its operation
Reliability.
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, the reaction time according to the metal hydride in first reactor 210 and/or second reactor 220 is configured to, is adjusted
Hydrogen flow direction in whole first reactor 210 and second reactor 220.Electrochemical compression device 230 is realized by internal electric field
Hydrogen directional transmissions, that is, hydrogen is fed to the reactor for carrying out hydrogen abstraction reaction from the reactor for carrying out dehydrogenation reaction, reach
Adjust the purpose of both sides Hydrogen Vapor Pressure and concentration.In some optional embodiments, predetermined period T can be previously provided with,
, can be with when the reaction time of first reactor 210 and/or the metal hydride in second reactor 220 reaches predetermined period T
The hydrogen flow direction in first reactor 210 and second reactor 220 is adjusted, makes hydrogen reverse flow.Wherein predetermined period T can be with
It is configured according to the flow velocity of the volume of two reactors, the quantity of interior metal hydride, hydrogen.In the appearance of two reactors
In the case that product, the quantity of interior metal hydride, the flow velocity of hydrogen are certain, inventor can obtain metal according to many experiments
Reaction time of the hydride completely needed for reaction, and be configured as predetermined period T.The process of the setting predetermined period
Completed before dispatching from the factory, i.e., when using metal hydride refrigeration system 10, predetermined period has been pre-set user, metallic hydrogen
Compound refrigeration system 10 can be according to predetermined period automatic running.
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 eight
A solenoid 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, eight solenoid 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 determined according to the reaction time of the metal hydride in first reactor 210 and/or second reactor 220.In adjustable electric
After the polarity of voltage conversion in source 240, electrochemical compression device 230 transmits the direction respective change of hydrogen, such as in the first reaction
During the hydrogen of 210 dehydrogenation of device feeds to the progress hydrogen abstraction reaction of second reactor 220, if electrochemical compression device 230
Input voltage dipole inversion, hydrogen flow direction is changed to feed to first reactor 210 from second reactor 220, 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 anti-
Device 220 is answered to 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 eight solenoid valves：First solenoid valve 131, second solenoid valve the 132, the 3rd
Solenoid valve 133, the 4th solenoid valve 134, the 5th solenoid valve 135, the 6th solenoid valve 136, the 7th solenoid valve 137 and the 8th electromagnetism
Valve 138.
Wherein, the first solenoid valve 131, its liquid inlet are connected to the refrigerating medium outlet of first reactor 210, its outlet end connects
The refrigerating medium entrance of First Heat Exchanger 111, second solenoid valve 132 are connected to, its liquid inlet is connected to the refrigerating of second reactor 220
Agent exports, its outlet end is connected to the refrigerating medium entrance of the second heat exchanger 112, the 3rd solenoid valve 133, its liquid inlet is connected to the
The refrigerating medium outlet of one heat exchanger 111, its outlet end are connected to the refrigerating medium entrance of first reactor 210, the 4th solenoid valve
134, its liquid inlet is connected to the refrigerating medium outlet of the second heat exchanger 112, its outlet end is connected to the refrigerating of second reactor 220
Agent entrance.
5th solenoid valve 135, its liquid inlet are connected to the refrigerating medium outlet of First Heat Exchanger 111, its outlet end is connected to
The refrigerating medium entrance of second reactor 220, the 6th solenoid valve 136, the refrigerating medium that its liquid inlet is connected to second reactor 220 go out
Mouthful, its outlet end is connected to the refrigerating medium entrance of the second heat exchanger 112, the 7th solenoid valve 137, its liquid inlet is connected to second and changes
The refrigerating medium outlet of hot device 112, its outlet end are connected to the refrigerating medium entrance of first reactor 210, the 8th solenoid valve 138, its
Liquid inlet is connected to the refrigerating medium outlet of first reactor 210, and the refrigerating medium that its outlet end is connected to the second heat exchanger 112 enters
Mouthful, to be all turned in the first solenoid valve 131, second solenoid valve 132, the 3rd solenoid valve 133, the 4th solenoid valve 134, and the
Five solenoid valves 135, the 6th solenoid valve 136, the 7th solenoid valve 137,138 Close All of the 8th solenoid valve or the first solenoid valve
131st, second solenoid valve 132, the 3rd solenoid valve 133,134 Close All of the 4th solenoid valve, and the 5th solenoid valve the 135, the 6th
Switch 111 and second heat exchanger of First Heat Exchanger when solenoid valve 136, the 7th solenoid valve 137, the 8th solenoid valve 138 are all turned on
112 refrigerating medium flow direction.Eight solenoid valves used above are only the refrigerating for switching 111 and second heat exchanger 112 of First Heat Exchanger
A kind of optional implementation of agent flow direction, can be real by the structure of other pipelines and valve in some other embodiments
The switching in existing refrigerating medium direction.
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 solenoid 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 second solenoid 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 solenoid valve 131, the second pump 142 is arranged at second
On refrigerating medium pipeline between the refrigerating medium outlet of reactor 220 and second solenoid 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 first solenoid valve 131, second solenoid valve 132, the 3rd solenoid valve 133,
4th solenoid valve 134 is all turned on, and the 5th solenoid valve 135, the 6th solenoid valve 136, the 7th solenoid valve 137, the 8th electromagnetism
138 Close All of valve.Wherein the refrigerating medium that First Heat Exchanger 111 flows out is conducted to first reactor by the 3rd solenoid valve 133
210, into after crossing heat exchange, refrigerating medium is led back to First Heat Exchanger 111 by the first solenoid valve 131, realizes one group of refrigerating medium circulation.The
The refrigerating medium that second heat exchanger 112 flows out is conducted to second reactor 220 by four solenoid valves 134, into after crossing heat exchange, the second electromagnetism
Refrigerating medium is led back to the second heat exchanger 112 by 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 first solenoid valve 131, the second electromagnetism
Valve 132, the 3rd solenoid valve 133,134 Close All of the 4th solenoid valve, and the 5th solenoid valve 135, the 6th solenoid valve 136,
Seven solenoid valves 137, the 8th solenoid valve 138 are all turned on.5th solenoid valve 135 leads the refrigerating medium that First Heat Exchanger 111 flows out
Second reactor 220 is passed to, into after crossing heat exchange, refrigerating medium is led back to First Heat Exchanger 111 by the 6th solenoid valve 136, realizes one
Group refrigerating medium circulation.The refrigerating medium that second heat exchanger 112 flows out is conducted to first reactor 210 by the 7th solenoid valve 137, into mistake
After heat exchange, refrigerating medium is led back to the second heat exchanger 112 by the 8th solenoid valve 138, realizes another group of 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 the reaction time of first reactor 210 and/or the metal hydride in second reactor 220；
Step S404, the hydrogen adjusted according to the reaction time in first reactor 210 and second reactor 220 flow to, with
Make first reactor 210 and the alternately heat release and heat absorption respectively of second reactor 220；
Step S406, detects the refrigerating medium outlet outflow of the first reactor 210 or second reactor 220 by absorbing heat
Refrigerant temperature；
Step S408, judges whether refrigerant temperature is less than preset temperature threshold value, if so, step S410 is performed, if it is not, returning
Receipt row step S406；
Step S410, drives eight electromagnetism Vavle switching refrigerating medium pipeline connection first reactors 210, second reactors 220
And First Heat Exchanger 111, the state of the second heat exchanger 112.
In above step, the metal hydride in step S402 in first reactor 210 and/or second reactor 220
Reaction time, since regulated power supply 240 to electrochemical compression device 230 provide direct current when timing.
Step S404 can be by could be adjusted to realize to regulated power supply 240, and specifically, step S404 can include：
The polarity of direct current is determined according to the reaction time of the metal hydride in first reactor 210 and/or second reactor 220,
To adjust the direction that electrochemical compression device 230 transmits hydrogen.
Preset temperature threshold value in step S408 can be configured according to the result and concrete condition of many experiments.Such as
In the case that the quantity of volume, interior metal hydride in two reactors, the flow velocity of hydrogen are certain, inventor can basis
Many experiments are obtained after being reacted completely in the reactor to absorb heat, by the refrigerant temperature of its refrigerating medium outlet outflow, and will
The temperature is configured as preset temperature threshold value t.The process of the setting preset temperature threshold value is completed before dispatching from the factory, i.e. user
When using metal hydride refrigeration system 10, preset temperature threshold value has been pre-set, and metal hydride refrigeration system 10 can
With according to preset temperature threshold value automatic running.
The refrigerating medium for changing 111 and second heat exchanger 112 of First Heat Exchanger in step S410 by eight solenoid valves flows to,
To switch refrigerating medium pipeline connection first reactor 210, second reactor 220 and First Heat Exchanger 111, the second heat exchanger
112 state, makes First Heat Exchanger 111 keep with carrying out exothermic reactor (first reactor 210 or second reactor 220)
Connection, and the second heat exchanger 112 is kept the reactor (first reactor 210 or second reactor 220) with absorbing heat
Connection.
Whether above-mentioned control method can reach default week by detecting the reaction time of the metal hydride in reactor
Phase, is controlled metal hydride refrigeration system 10 automatically, ensures its reliability of operation.In the above-mentioned methods, week is preset
Phase can be set in advance according to the metal hydride content in the hydrogen and reactor in metal hydride refrigeration system 10
Put, the process of the setting predetermined period is completed before dispatching from the factory, i.e., user is preset when using metal hydride refrigeration system 10
Cycle has pre-set, and metal hydride refrigeration system 10 can be according to predetermined period 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 the reaction time of first reactor 210 and/or the metal hydride in second reactor 220；
Step S506, judges whether the reaction time reaches predetermined period, if so, performing step S508, is performed if it is not, returning
Step S504；
Step S508, switches the polarity of voltage direction of direct current, to adjust first reactor 210 and second reactor 220
Interior hydrogen flow direction；
Step S510, the reaction time of the metal hydride in first reactor 210 and second reactor 220 is reset；
Step S512, detects the refrigerating medium outlet outflow of the first reactor 210 or second reactor 220 by absorbing heat
Refrigerant temperature；
Step S514, judges whether refrigerant temperature is less than preset temperature threshold value, if so, step S516 is performed, if it is not, returning
Receipt row step S512；
Step S516, drives eight electromagnetism Vavle switching refrigerating medium pipeline connection first reactors 210, second reactors 220
And First Heat Exchanger 111, the state of the second heat exchanger 112, and return and perform step S504.
Wherein, reacted in step S516 by eight electromagnetism Vavle switching refrigerating medium pipeline connection first reactors 210, second
Device 220 and First Heat Exchanger 111, the state of the second heat exchanger 112, to switch 111 and second heat exchanger 112 of First Heat Exchanger
Refrigerating medium flow direction, make First Heat Exchanger 111 keep the reactor with progress hydrogen abstraction reaction to connect, and make the second heat exchanger 112
Keep connecting with carrying out the reactor of dehydrogenation reaction.
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 the start recording reaction time, anti-
When reaching predetermined period between seasonable, switch the polarity of voltage direction of direct current, to adjust first reactor 210 and second reactor
Hydrogen flow direction in 220, it is then that the reaction time of the metal hydride in first reactor 210 and second reactor 220 is clear
Zero, and when the refrigerant temperature of the refrigerating medium outlet outflow by second reactor 220 is less than preset temperature threshold value, determine two
Hydrogen abstraction reaction and dehydrogenation reaction in reactor exchange, i.e., the metal hydride in first reactor 210 carries out dehydrogenation reaction suction
Heat, the metal hydride in second reactor 220 are carried out hydrogen abstraction reaction heat release, are exchanged heat at this time using eight electromagnetism Vavle switchings first
The refrigerating medium flow direction of 111 and second heat exchanger 112 of device, so that First Heat Exchanger 111 connects with carrying out exothermic second reactor 220
It is logical, and the second heat exchanger 112 is connected with the first reactor 210 absorbed heat.Again recording reacting time, in the reaction time
When reaching predetermined period again, switch the polarity of voltage direction of direct current again, and carried in the first reactor 210 absorbed heat
The refrigerant temperature of cryogen outlet outflow switches 111 and second heat exchanger 112 of First Heat Exchanger when being less than preset temperature threshold value
Refrigerating medium flows to, and so on, circulation performs.
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 the start recording reaction time, anti-
When reaching predetermined period between seasonable, switch the polarity of voltage direction of direct current, to adjust first reactor 210 and second reactor
Hydrogen flow direction in 220, it is then that the reaction time of the metal hydride in first reactor 210 and second reactor 220 is clear
Zero, and when the refrigerant temperature of the refrigerating medium outlet outflow by first reactor 210 is less than preset temperature threshold value, determine two
Hydrogen abstraction reaction and dehydrogenation reaction in reactor exchange, i.e., the metal hydride in first reactor 210 carries out hydrogen abstraction reaction and puts
Heat, the metal hydride in second reactor 220 are carried out dehydrogenation reaction heat absorption, are exchanged heat at this time using eight electromagnetism Vavle switchings first
The refrigerating medium flow direction of 111 and second heat exchanger 112 of device, so that First Heat Exchanger 111 connects with carrying out exothermic first reactor 210
It is logical, and the second heat exchanger 112 is connected with the second reactor 220 absorbed heat.Again recording reacting time, in the reaction time
When reaching predetermined period again, switch the polarity of voltage direction of direct current again, and carried in the second reactor 220 absorbed heat
The refrigerant temperature of cryogen outlet outflow switches 111 and second heat exchanger 112 of First Heat Exchanger when being less than preset temperature threshold value
Refrigerating medium flows to, and so on, circulation performs.
It should be noted that the reaction time of metal hydride in first reactor 210 and second reactor 220 is not
, can be anti-in first reactor 210 and second if metal hydride refrigeration system 10 receives shutdown command when reaching predetermined period
Answer the reaction time of the metal hydride in device 220 to complete automatic shutdown after predetermined period, can so ensure metal hydride
For refrigeration system 10 when starting shooting next time, the metal hydride in first reactor 210 and second reactor 220 is in unreacted
Original state, further ensure metal hydride and fully reacted in predetermined period.
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 metallic hydrogen in two reactors
The refrigerant temperature of the refrigerating medium outlet outflow for the reactor that the reaction time of compound and detection are absorbed heat, to metal hydride
Thing refrigeration system 10 is controlled automatically, ensures its reliability of operation, by eight electromagnetism Vavle switching First Heat Exchangers 111,
Second heat exchanger 112 and first reactor 210 or the connection relation of second reactor 220, by it is a kind of it is easy in a manner of realize the
One heat exchanger 111 discharges heat all the time, the second heat exchanger 112 freezes all the time, so as to make full use of the work of reactor to imitate
Rate.It can ensure that metal hydride refrigeration system 10 is reliablely and stablely run using the above method, 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 described
The reaction time of one reactor and/or the metal hydride in the second reactor adjusts the first reactor and described the
Hydrogen flow direction in two reactors, so that the first reactor and the second reactor alternately heat release and suction respectively
Heat；And
Refrigerating medium circulator, its with First Heat Exchanger, the second heat exchanger, refrigerating medium pipeline and eight solenoid valves, wherein
Eight solenoid valves are connected with the refrigerating medium pipeline, and are configured to according to by the first reactor absorbed heat or institute
State the refrigerating medium outlet outflow of second reactor refrigerant temperature switch first reactor described in the refrigerating medium pipeline connection,
The second reactor and the First Heat Exchanger, the state of second heat exchanger, so that the First Heat Exchanger is kept
Connected with carrying out the exothermic first reactor or the second reactor, and second heat exchanger is kept with being inhaled
The first reactor of heat 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
The reaction time of the first reactor and/or the metal hydride in the second reactor determines.
3. metal hydride refrigeration system according to claim 1, wherein eight solenoid valves include：
First solenoid valve, its liquid inlet are connected to the refrigerating medium outlet of the first reactor, its outlet end is connected to described the
The refrigerating medium entrance of one heat exchanger, second solenoid valve, its liquid inlet are connected to the refrigerating medium outlet of the second reactor, it goes out
Liquid end is connected to the refrigerating medium entrance of second heat exchanger, the 3rd solenoid valve, its liquid inlet is connected to the First Heat Exchanger
Refrigerating medium outlet, its outlet end is connected to the refrigerating medium entrance of the first reactor, the 4th solenoid valve, the connection of its liquid inlet
Refrigerating medium to second heat exchanger exports, its outlet end is connected to the refrigerating medium entrance of the second reactor, the 5th electricity
Magnet valve, its liquid inlet are connected to the refrigerating medium outlet of the First Heat Exchanger, its outlet end is connected to the second reactor
Refrigerating medium entrance, the 6th solenoid valve, its liquid inlet are connected to the refrigerating medium outlet of the second reactor, its outlet end is connected to
The refrigerating medium entrance of second heat exchanger, the 7th solenoid valve, the refrigerating medium that its liquid inlet is connected to second heat exchanger go out
Mouthful, its outlet end is connected to the refrigerating medium entrance of the first reactor, the 8th solenoid valve, its liquid inlet is connected to described first
The refrigerating medium outlet of reactor, its outlet end is connected to the refrigerating medium entrance of second heat exchanger, with first electromagnetism
Valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve are all turned on, and the 5th solenoid valve,
It is six solenoid valves, the 7th solenoid valve, the 8th solenoid valve Close All or first solenoid valve, the second solenoid valve, described
3rd solenoid valve, the 4th solenoid valve Close All, and the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve,
Eight solenoid valves switch the refrigerating medium flow direction of the First Heat Exchanger and second heat exchanger when being all turned on.
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 solenoid 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 the second solenoid 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 eight solenoid valves, and the control method includes：
Obtain the reaction time of the first reactor and/or the metal hydride in the second reactor；
The hydrogen adjusted according to the reaction time in the first reactor and the second reactor flows to, so that described the
One reactor and the second reactor alternately heat release and heat absorption respectively；
The refrigerating medium temperature that detection is flowed out by the refrigerating medium outlet of the first reactor or the second reactor absorbed heat
Degree, and judge whether the refrigerant temperature is less than preset temperature threshold value；And
If so, drive first reactor, second reaction described in refrigerating medium pipeline connection described in eight electromagnetism Vavle switchings
Device and the First Heat Exchanger, the state of second heat exchanger, so that the First Heat Exchanger keeps exothermic with progress
The first reactor or second reactor connection, and make the second heat exchanger holding and absorb heat described first
Reactor or second reactor connection.
6. control method according to claim 5, wherein adjusting in the first reactor and the second reactor
Hydrogen the step of flowing to after further include：
The reaction time of metal hydride in the first reactor and the second reactor 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, to adjust the side of the electrochemical compression device transmission hydrogen
To.
8. control method according to claim 7, wherein, according to the first reactor and/or the second reactor
The reaction time of interior metal hydride determines that the step of polarity of the direct current includes：
In the case where the reaction time is less than predetermined period, the polarity of voltage direction of the direct current is kept, described anti-
In the case of reaching the predetermined period between seasonable, switch 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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| WO2023011064A1 (en) * | 2021-08-06 | 2023-02-09 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling electrochemical refrigeration system, and electrochemical refrigeration system |
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Application publication date: 20180501 |