CN108507065B - Electrochemical air conditioner and method for controlling electrochemical air conditioner - Google Patents
Electrochemical air conditioner and method for controlling electrochemical air conditioner Download PDFInfo
- Publication number
- CN108507065B CN108507065B CN201710312614.7A CN201710312614A CN108507065B CN 108507065 B CN108507065 B CN 108507065B CN 201710312614 A CN201710312614 A CN 201710312614A CN 108507065 B CN108507065 B CN 108507065B
- Authority
- CN
- China
- Prior art keywords
- electrochemical
- hydrogenation metal
- metal reactor
- supply voltage
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
Abstract
The invention discloses an electrochemical air conditioning system, and belongs to the technical field of air conditioners. The system comprises: a power supply, an electrochemical compression device, a first hydride metal reactor, a second hydride metal reactor, a controller, a first heat exchanger, and a second heat exchanger; the electrochemical compression device is arranged between the first hydrogenation metal reactor and the second hydrogenation metal reactor and is used for transmitting and compressing hydrogen; and the controller is used for controlling the switching of the flow directions of the heat exchange medium between the first heat exchanger and the second heat exchanger and between the first hydrogenation metal reactor and the second hydrogenation metal reactor. In addition, the invention also provides a control method and a control device of the electrochemical air conditioning system. The electrochemical air conditioning system is different from a traditional steam compression type brand new air conditioning system, and can adjust the power supply voltage according to the current working state of the electrochemical air conditioning system so as to enable the electrochemical air conditioning system to be in a better running state.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an electrochemical air conditioning system, a control method and a device.
Background
The electrochemical compressor is a hydrogen compressor where hydrogen (H2) is supplied to the anode and the compressed hydrogen is collected at a 70% to 80% efficiency cathode at pressures up to 10,000 psig. Electrochemical compressors are noiseless, expandable, and easily modularized, and have been tried to be applied to new refrigeration systems. Chinese patent application CN105910314A discloses an electrochemical refrigeration system, CN106288071A and CN106288072A disclose different electrochemical air conditioning systems, respectively, and CN106196368A discloses a rotation control method of an electrochemical air conditioning system. It is anticipated that research into electrochemical refrigeration systems will be increasingly appreciated.
Disclosure of Invention
The embodiment of the invention provides an electrochemical air conditioning system, a control method and a device. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of embodiments of the present invention, there is provided an electrochemical air conditioning system,
in some exemplary embodiments, the electrochemical air conditioning system includes:
the system comprises a power supply, an electrochemical compression device, a first hydrogenation metal reactor, a second hydrogenation metal reactor, a controller, a monitoring unit, a setting unit, a first heat exchanger and a second heat exchanger;
the power supply is used for supplying power to the electrochemical compression device;
the electrochemical compression device is arranged between the first hydrogenation metal reactor and the second hydrogenation metal reactor and is used for transmitting and compressing hydrogen;
the first heat exchanger and the second heat exchanger can be connected with the first hydrogenation metal reactor or the second hydrogenation metal reactor for heat exchange through a heat exchange medium circulation pipeline;
when the first hydrogenation metal reactor is a heat release end and the second hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the first hydrogenation metal reactor, and the second heat exchanger is connected with the second hydrogenation metal reactor to form a first conduction direction for the circulation of a heat exchange medium; if the second hydrogenation metal reactor is a heat release end and the first hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the second hydrogenation metal reactor, and the second heat exchanger is connected with the first hydrogenation metal reactor to form a second conduction direction for the circulation of a heat exchange medium;
the first heat exchanger is used for being connected with the first hydrogenation metal reactor through a first input pipeline provided with a first electromagnetic valve and a first output pipeline provided with a second electromagnetic valve when being conducted in a first conduction direction; when the reactor is conducted in a second conduction direction, the reactor is connected with the second hydrogenation metal reactor through a second input pipeline provided with a third electromagnetic valve and a second output pipeline provided with a fourth electromagnetic valve;
the second heat exchanger is used for being connected with the second hydrogenation metal reactor through a third input pipeline provided with a fifth electromagnetic valve and a third output pipeline provided with a sixth electromagnetic valve when the second heat exchanger is conducted in the first conduction direction; when the second conduction direction is conducted, the second conduction direction is connected with the first hydrogenation metal reactor through a fourth input pipeline provided with a seventh electromagnetic valve and a fourth output pipeline provided with an eighth electromagnetic valve;
the controller is configured to control the first solenoid valve, the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve to be turned on and other solenoid valves to be turned off when the first conduction direction is turned on; when the second conduction direction is conducted, the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, and other electromagnetic valves are conducted;
the monitoring unit is used for monitoring a hydrogen reversing signal and an alarm signal;
the setting unit is used for setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the environment temperature and the target temperature if the monitoring unit does not monitor the hydrogen reversing signal and the alarm signal;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the system further comprises: a hydrogen controller;
the electrochemical compression device is also used for sending a hydrogen reversing signal according to the monitoring result of the state of at least one of the first hydrogenation metal reactor and the second hydrogenation metal reactor in which hydrogen absorption reaction occurs
The hydrogen controller is used for switching the gas flow circulation direction of the hydrogen between the first hydrogenation metal reactor and the second hydrogenation metal reactor after the electrochemical compression device sends the hydrogen reversing signal;
the controller controls the switching of the first conduction direction and the second conduction direction in a delayed mode; when the first conduction direction is conducted, if the timing reaches a set time threshold, controlling the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve to be conducted, and closing other electromagnetic valves; and when the second conduction direction is conducted, if the timing reaches a set time threshold, controlling the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve to be closed, and conducting other electromagnetic valves.
According to a second aspect of the embodiments of the present invention, there is provided a control method for the electrochemical air conditioning system of the foregoing embodiments,
in some exemplary embodiments, the control method includes:
if the hydrogen reversing signal and the alarm signal are not monitored, the following steps are carried out:
setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the ambient temperature and the target temperature;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the control method further comprises the following steps: monitoring the hydrogen gas reversing signal, then: changing the gas flow circulation direction of the hydrogen in the electrochemical air conditioning system; wherein the changing of the gas flow circulation direction of the hydrogen gas comprises: changing the direction of the first hydrogen flow path into the direction of the second hydrogen flow path, or changing the direction of the second hydrogen flow path into the direction of the first hydrogen flow path; wherein the first hydrogen flow path is from the first hydrogenation metal reactor through the electrochemical compression device to the second hydrogenation metal reactor, and the second hydrogen flow path is from the second hydrogenation metal reactor through the electrochemical compression device to the first hydrogenation metal reactor;
after the changing of the circulation direction of the hydrogen gas flow, the method further comprises the following steps: changing the flow direction of a heat exchange medium in the electrochemical air conditioning system in a delayed manner, wherein the delayed time is set time;
the heat exchange medium flow path direction includes: a first heat exchange medium flow direction, a second heat exchange medium flow direction, a third heat exchange medium flow direction, and a fourth heat exchange medium flow direction;
the flow direction of the first heat exchange medium is as follows: a direction of flow of the heat exchange medium between the first hydrogenation metal reactor and the first heat exchanger;
the flow direction of the second heat exchange medium is as follows: a direction of flow of the heat exchange medium between the second hydriding metal reactor and the second heat exchanger;
the flow direction of the third heat exchange medium is as follows: a direction of flow of the heat exchange medium between the first hydrogenation metal reactor and the second heat exchanger;
the flow direction of the fourth heat exchange medium is as follows: a direction of flow of the heat exchange medium between the second hydrogenation metal reactor and the first heat exchanger;
the control method further comprises the following steps: if the alarm signal is monitored, the following steps are carried out: reducing the voltage gear of the power supply voltage of the electrochemical air-conditioning system until the system stops alarming;
the setting of the power supply voltage of the electrochemical compression device in the electrochemical air conditioning system according to the temperature difference between the ambient temperature and the target temperature comprises the following steps: the smaller the temperature difference between the ambient temperature and the target temperature, the smaller the supply voltage, and when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the supply voltage is set to a first voltage V1; and/or the presence of a gas in the gas,
when the temperature difference between the ambient temperature and the target temperature is greater than or equal to a second set value Δ t2, setting the power supply voltage to a third voltage V3; and/or the presence of a gas in the gas,
setting the supply voltage to a second voltage V2 when a temperature difference between an ambient temperature and a target temperature is greater than the first set value Δ t1 and less than the second set value Δ t 2;
wherein V1< V2< V3 and Δ t1< Δ t 2.
According to a third aspect of the embodiments of the present invention, there is provided a control device for the electrochemical air conditioning system of the foregoing embodiments,
in some exemplary embodiments, the apparatus, comprising:
the monitoring unit is used for monitoring a hydrogen reversing signal and an alarm signal;
the setting unit is used for setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system if the monitoring unit does not monitor the hydrogen reversing signal and the alarm signal;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the device further comprises:
the hydrogen reversing unit is used for changing the airflow circulation direction of the hydrogen in the electrochemical air conditioning system after the monitoring unit monitors the hydrogen reversing signal;
the stopping alarm unit is used for gradually reducing the voltage gear of the power supply voltage of the electrochemical air-conditioning system after the monitoring unit monitors the alarm signal until the system stops alarming;
and the heat exchange medium reversing unit is used for changing the flow direction of the heat exchange medium in the electrochemical air conditioning system in a delayed manner after the hydrogen reversing unit changes the airflow circulation direction of the hydrogen in the electrochemical air conditioning system.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
1. the method is characterized in that a brand-new air conditioning system different from the traditional steam compression type is provided, and working medium conditions are provided for the heat pump air conditioner by controlling the electrochemical heat absorption and release process;
2. the power supply voltage of the electrochemical air conditioning system can be adjusted according to the current running state of the electrochemical air conditioning system,
so that the operation state is better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram illustrating an electrochemical air conditioning system in a conditioning state I, according to an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating an electrochemical air conditioning system in a conditioning state II, according to an exemplary embodiment;
FIG. 3 is a flow diagram illustrating a method of controlling an electrochemical air conditioning system according to an exemplary embodiment;
FIG. 4 is a detailed flow diagram illustrating a method of controlling an electrochemical air conditioning system according to an exemplary embodiment;
FIG. 5 is a functional block diagram illustrating a control device of an electrochemical air conditioning system according to an exemplary embodiment;
in fig. 1 and 2, the reference numerals illustrate: the method comprises the following steps of 1-an electrochemical compression device, 2-a second hydrogenation metal reactor, 3-a first hydrogenation metal reactor, 4-a power supply, 5-a three-way valve, 6-a hydrogen transmission pipeline, 7-a first direct current pump, 8-a second direct current pump, 9-16 two-way valves, 17-a first heat exchanger, 18-a second heat exchanger and 19-a heat exchange medium pipeline.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
The hydrogenation metal reactor is a device for effectively utilizing the heat effect generated during the hydrogen absorption and dehydrogenation processes of the hydrogenation metal. The hydrogen absorption process is accompanied by heat release; an endotherm is accompanied in the dehydrogenation process. The hydrogenation metal is stored in the hydrogenation metal reactor and can react with hydrogen to cause the temperature of the hydrogenation metal reactor to rise or fall. The reaction process of the metal hydride with hydrogen is determined by the pressure, temperature and hydrogen-containing concentration inside thereof. The amount of metal hydride content in the reactor determines the amount of hydrogen absorbed by the reactor.
The electrochemical compression device adopts an electrolysis mode, and can oxidize hydrogen at an anode and reduce the hydrogen at a cathode. The transmission and compression of hydrogen can be realized by applying an external potential and consuming less energy. In the electrochemical reaction process, anode reaction, cathode reaction, electron conduction and ion conduction all occur on a membrane electrode which is a core component of the electrochemical compression device. The membrane electrode is composed of a plurality of layers of different structures and is constrained by the membrane electrode structure and the assembly of the electrochemical compression device, and the polarity of an input power supply of the electrochemical compression device is fixed, so that the transmission and compression of hydrogen can be realized.
The straight-flow pump is used for driving the heat exchange medium to circulate in the pipeline. The heat exchange medium circulates between the hydrogenation metal reactor and the system heat exchanger, and heat is exchanged in a convection mode, so that the high-temperature fluid is rapidly cooled by heat transfer. The liquid heat exchange medium mainly comprises water or glycol and the like.
The heat exchanger exchanges heat with the metal hydride reactor through a heat exchange medium, and transfers heat with the external environment through convection or the like.
The invention provides an electrochemical air conditioning system;
in some exemplary embodiments, the system comprises: a power supply, an electrochemical compression device, a first hydride metal reactor, a second hydride metal reactor, a controller, a first heat exchanger, and a second heat exchanger;
the power supply is used for supplying power to the electrochemical compression device;
the electrochemical compression device is arranged between the first hydrogenation metal reactor and the second hydrogenation metal reactor and is used for transmitting and compressing hydrogen;
the first heat exchanger and the second heat exchanger can be connected with the first hydrogenation metal reactor or the second hydrogenation metal reactor for heat exchange through a heat exchange medium circulation pipeline;
if the first hydrogenation metal reactor is a heat release end and the second hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the first hydrogenation metal reactor, and the second heat exchanger is connected with the second hydrogenation metal reactor to form a first conduction direction for the circulation of a heat exchange medium; if the second hydrogenation metal reactor is a heat release end and the first hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the second hydrogenation metal reactor, and the second heat exchanger is connected with the first hydrogenation metal reactor to form a second conduction direction for the circulation of a heat exchange medium;
the first heat exchanger is used for being connected with the first hydrogenation metal reactor through a first input pipeline provided with a first electromagnetic valve and a first output pipeline provided with a second electromagnetic valve when being conducted in a first conduction direction; when the reactor is conducted in a second conduction direction, the reactor is connected with the second hydrogenation metal reactor through a second input pipeline provided with a third electromagnetic valve and a second output pipeline provided with a fourth electromagnetic valve;
the second heat exchanger is used for being connected with the second hydrogenation metal reactor through a third input pipeline provided with a fifth electromagnetic valve and a third output pipeline provided with a sixth electromagnetic valve when the second heat exchanger is conducted in the first conduction direction; when the second conduction direction is conducted, the second conduction direction is connected with the first hydrogenation metal reactor through a fourth input pipeline provided with a seventh electromagnetic valve and a fourth output pipeline provided with an eighth electromagnetic valve;
the controller is configured to control the first solenoid valve, the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve to be turned on and other solenoid valves to be turned off when the first conduction direction is turned on; and when the second conduction direction is conducted, the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, and other electromagnetic valves are conducted.
Optionally, the system further includes: a hydrogen controller for switching a gas flow circulation direction of the hydrogen gas between the first hydrogenation metal reactor and the second hydrogenation metal reactor;
the electrochemical compression device is also used for sending a hydrogen reversing signal according to the state monitoring result of at least one of the first hydrogenation metal reactor and the second hydrogenation metal reactor in which hydrogen absorption reaction occurs;
the hydrogen controller is used for switching the gas flow circulation direction of the hydrogen between the first hydrogenation metal reactor and the second hydrogenation metal reactor by controlling the opening and closing state of an electromagnetic valve arranged on a hydrogen transmission pipeline after the electrochemical compression device sends the hydrogen reversing signal;
optionally, the controller delays to control switching between the first conducting direction and the second conducting direction; when the controller is conducted in the first conduction direction, if timing reaches a set time threshold, the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are controlled to be conducted, and other electromagnetic valves are controlled to be closed; and when the second conduction direction is conducted, if the timing reaches a set time threshold, controlling the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve to be closed, and conducting other electromagnetic valves.
In the above embodiment, each of the electromagnetic valves is a two-way valve disposed on a heat exchange medium flow pipeline, and is controlled by the controller to switch the flow direction of the heat exchange medium by switching the corresponding flow direction; the hydrogen controller is used for switching the gas flow circulation direction of the hydrogen.
For better explanation of the above embodiments, fig. 1 and fig. 2 show an alternative schematic implementation structure of the electrochemical air conditioner.
As shown in fig. 1 and 2, the electrochemical air conditioner includes an electrochemical compression device 1, a power source 4 for supplying power to the electrochemical compression device 1, a first hydrogenation metal reactor 3, and a second hydrogenation metal reactor 2.
The first hydrogenation metal reactor 3 and the second hydrogenation metal reactor 2 store hydrogenation metal, and the hydrogenation metal can react with hydrogen gas, and the reaction process is as follows:
the reaction is characterized in that forward hydrogenated metal and hydrogen are synthesized into exothermic reaction, the temperature of the hydrogenated metal reactor is raised, and the hydrogen is released by reversely decomposing metal hydride into endothermic reaction, so that the temperature of the hydrogenated metal reactor is lowered.
The first hydrogenation metal reactor 3 and the second hydrogenation metal reactor 2 are connected to the anode of the electrochemical compression device 1 through a first three-way valve (two three-way valves 15 in fig. 1, the first three-way valve being close to the anode and the second three-way valve being close to the cathode), and the first hydrogenation metal reactor 3 and the second hydrogenation metal reactor 2 are connected to the cathode of the electrochemical compression device 1 through a second three-way valve. Wherein, the first interface of first three-way valve passes through the pipeline to be connected with first hydrogenation metal reactor 3, and the second interface of first three-way valve passes through the pipeline to be connected with second hydrogenation metal reactor 2, and the third interface of first three-way valve passes through the pipeline to be connected with the positive pole of electrochemistry compressor arrangement 1.
The first three-way valve can be controlled to change the conduction direction, or conduct the third interface with the first interface, or conduct the third interface with the second interface. In the same way, the first interface of the second three-way valve is connected with the first hydrogenation metal reactor 3 through a pipeline, and the second interface of the second three-way valve is connected with the second hydrogenation metal reactor 2 through a pipeline
And a third port of the second three-way valve is connected with the cathode of the electrochemical compression device 1 through a pipeline. The second three-way valve can be controlled to change the conduction direction, or conduct the third interface with the first interface, or conduct the third interface with the second interface.
The pipeline of connection between first hydrogenation metal reactor 3, first three-way valve, electrochemical compression device 1, second three-way valve, second hydrogenation metal reactor 2 to and, the pipeline of connection between second hydrogenation metal reactor 2, first three-way valve, electrochemical compression device 1, second three-way valve, first hydrogenation metal reactor 3 all can supply the hydrogen transmission circulation, and these connecting lines constitute hydrogen transmission pipeline 6 jointly.
When the first hydrogenation metal reactor 3 performs an endothermic reaction and the second hydrogenation metal reactor 2 performs an exothermic reaction, the first hydrogenation metal reactor 3 releases hydrogen (H2) and the second hydrogenation metal reactor 2 absorbs hydrogen, and the hydrogen is compressed by the electrochemical compression device 1 from the first hydrogenation metal reactor 3 and then transferred to the second hydrogenation metal reactor 2. In this case, the first three-way valve will controllably open the line between the first hydrogenation metal reactor 3 and the anode of the electrochemical compression device 1, and the second three-way valve will controllably open the line between the cathode of the electrochemical compression device 1 and the second hydrogenation metal reactor 2, thereby creating a first hydrogen transport direction from the first hydrogenation metal reactor 2 through the electrochemical compression device 1 to the second hydrogenation metal reactor 2, as shown in fig. 1.
When the first hydrogenation metal reactor 3 performs an exothermic reaction and the second hydrogenation metal reactor 2 performs an endothermic reaction, the first hydrogenation metal reactor 3 absorbs hydrogen and the second hydrogenation metal reactor 2 releases hydrogen, and the hydrogen is compressed by the electrochemical compression device 1 from the second hydrogenation metal reactor 2 and then transmitted to the first hydrogenation metal reactor 3. In this case, the first three-way valve will controllably open the line between the second hydrogenation metal reactor 3 and the anode of the electrochemical compression device 1, and the second three-way valve will controllably open the line between the cathode of the electrochemical compression device 1 and the first hydrogenation metal reactor 3, thereby creating a second hydrogen transport direction from the second hydrogenation metal reactor 2 through the electrochemical compression device 1 to the first hydrogenation metal reactor 3, as shown in fig. 2.
As shown in fig. 1, 2, the first hydrogenation metal reactor 3 is in line connection with the first heat exchanger 17 through the two-way valve 13 and the two-way valve 15, respectively, and is in line connection with the second heat exchanger 18 through the two-way valve 9 and the two-way valve 10, respectively; the second hydrogenation metal reactor 2 is in line connection through a two-way valve 14 and a two-way valve 16 and a second heat exchanger 18, respectively, and through a two-way valve 11 and a two-way valve 12 and a first heat exchanger 17, respectively.
Wherein a first direct current pump 7 is arranged on the pipeline between the first hydrogenation metal reactor 3 and the two-way valve 13, and a second direct current pump 8 is arranged between the second hydrogenation metal reactor 2 and the two-way valve 14.
In some alternative embodiments, the first dc pump 7 and the second dc pump 8 may be omitted.
As shown in fig. 1, in the state I, the electromagnetic valves are turned on as follows:
a first interface of the two-way valve 7 is connected with a first end of the first hydrogenation metal reactor 3 through a first direct current pump 7 by a pipeline, a second interface of the two-way valve 7 is connected with a first interface of a first heat exchanger 17 by a pipeline, wherein the two-way valve 7 can be controlled to be switched on or switched off;
a first port of the two-way valve 15 is connected with a second port of the first heat exchanger 17 through a pipeline, a second port of the two-way valve 15 is connected with a second end of the first hydrogenation metal reactor 3 through a pipeline, and the two-way valve 15 can be controlled to be switched on or off;
a first port of the two-way valve 14 is connected with a first end of the second hydrogenation metal reactor 2 through a pipeline by a second direct current pump 8, a second port of the two-way valve 14 is connected with a first port of the second heat exchanger 18 through a pipeline, and the two-way valve 14 can be controlled to be switched on or off;
a first port of the two-way valve 16 is connected with a second port of the second heat exchanger 18 through a pipeline, and a second port of the two-way valve 16 is connected with a second end of the second hydrogenation metal reactor 2 through a pipeline, wherein the two-way valve 16 can be controlled to be switched on or off;
the other solenoid valves are closed.
As shown in fig. 2, in the state II, the conduction of each solenoid valve is as follows: a first port of the two-way valve 12 is connected with a first end of the second hydrogenation metal reactor 2 through a pipeline by a second direct current pump 8, a second port of the two-way valve 12 is connected with a first port of the first heat exchanger 17 through a pipeline, and the two-way valve 12 can be controlled to be switched on or switched off;
a first port of the two-way valve 11 is connected with a second port of the first heat exchanger 17 through a pipeline, and a second port of the two-way valve 11 is connected with a second end of the second hydrogenation metal reactor 2 through a pipeline, wherein the two-way valve 11 can be controlled to be switched on or off;
a first interface of the two-way valve 10 is connected with a first end of the first hydrogenation metal reactor 3 through a pipeline by a first direct current pump 7, a second interface of the two-way valve 10 is connected with a first interface of a second heat exchanger 18 through a pipeline, wherein the two-way valve 10 can be controlled to be switched on or switched off;
a first port of the two-way valve 9 is connected with a second port of the second heat exchanger 18 through a pipeline, and a second port of the two-way valve 9 is connected with a second end of the first hydrogenation metal reactor 3 through a pipeline, wherein the two-way valve 9 can be controlled to be switched on or off; the other solenoid valves are closed.
A first circulation flow pipeline connected among the heat exchanging part of the first hydrogenation metal reactor 3, the first direct current pump 7, the two-way valve 13, the first heat exchanger 17 and the two-way valve 15, a second circulation flow pipeline connected among the heat exchanging part of the second hydrogenation metal reactor 2, the second direct current pump 8, the two-way valve 14, the second heat exchanger 18 and the two-way valve 16, a third circulation flow pipeline connected among the heat exchanging part of the first hydrogenation metal reactor 3, the first direct current pump 7, the two-way valve 10, the second heat exchanger 18 and the two-way valve 9, a fourth circulation flow pipeline connected among the heat exchanging part of the second hydrogenation metal reactor 2, the second direct current pump 8, the two-way valve 12, the first heat exchanger 12 and the two-way valve 11, wherein the pipelines are all pipelines for circulating a heat exchange medium, and are collectively called as a heat exchange medium pipeline 19.
Wherein, the direction in which the heat exchange medium flows between the first hydrogenation metal reactor 3 and the first heat exchanger 17, that is, the direction in which the heat exchange medium flows in the first circulation flow line is referred to as a first heat exchange medium flow direction; the direction in which the heat exchange medium flows between the second hydrogenation metal reactor 2 and the second heat exchanger 18, i.e., the direction in which the heat exchange medium flows in the second circulating flow line, is referred to as a second heat exchange medium flow direction; the direction in which the heat exchange medium flows between the first hydrogenation metal reactor 3 and the second heat exchanger 18, that is, the direction in which the heat exchange medium flows in the third circulating flow line is referred to as a third heat exchange medium flow direction; the direction in which the heat exchange medium flows between the second hydrogenation metal reactor 2 and the first heat exchanger 17, i.e., the direction in which the heat exchange medium flows in the fourth circulating flow line, is referred to as a fourth heat exchange medium flow direction.
When the first hydrogenation metal reactor 3 is changed from the endothermic reaction to the exothermic reaction and the second hydrogenation metal reactor 2 is changed from the exothermic reaction to the endothermic reaction, the flow directions of the heat exchange media can be changed by controlling the on/off states of the two-way valves, so that the first heat exchanger 17 is always in the cooling state and the second heat exchanger 18 is always in the heating state.
In the embodiment shown in fig. 1 and 2, a first three-way valve and a second three-way valve are disposed on the hydrogen gas flow pipeline, and are used for switching the flow circulation direction of the hydrogen gas by changing the flow direction of the hydrogen gas under the control of the hydrogen gas controller; each two-way valve is an electromagnetic valve arranged on the heat exchange medium circulation pipeline, is controlled by the controller, and switches the circulation direction of the heat exchange medium by changing the on-off state of the two-way valve; in fig. 1, the first heat exchange medium flow direction and the second heat exchange medium flow direction correspond to a first flow direction of the heat exchange medium; in fig. 2, the third heat exchange medium flow direction and the fourth heat exchange mechanism flow direction correspond to a second flow direction of the heat exchange medium.
FIG. 3 shows a schematic flow diagram of a control method for controlling an electrochemical air conditioning system such as the one of FIGS. 1 and 2; in this example, a control scheme for an electrochemical air conditioning system with a dc pump with adjustable rotational speed is provided:
in some exemplary embodiments, as shown in fig. 3, the method for controlling an electrochemical air conditioning system includes: if the hydrogen reversing signal and the alarm signal are not monitored, the following steps are carried out:
setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the ambient temperature and the target temperature;
wherein the alarm signal comprises: an internal pressure threshold signal and a diaphragm voltage threshold signal of the electrochemical compression device; the hydrogen reversing signal is sent by the electrochemical compression device according to the state monitoring result of at least one of the hydrogenation metal reactors in which the hydrogen absorption reaction occurs;
in this embodiment, if the system does not monitor the hydrogen gas reversing signal and the alarm signal, which indicates that the current system is operating stably, it is only necessary to adjust the operating state of the system to keep the system in a good operating state;
the strength of the power supply voltage of the electrochemical compression device can influence the compression and transmission process of the electrochemical compression device on hydrogen, so that the overall operation state of the electrochemical air-conditioning system can be effectively adjusted by adjusting the power supply voltage;
wherein the environmental temperature is the actual temperature of the target space; the target temperature refers to the set temperature of the target space; whether the current working state of the electrochemical compression air conditioner is enough to meet the requirements of users can be known through the temperature difference between the environmental temperature and the target temperature, and then main factors (power supply voltage and rotating speed of a direct current pump) influencing the working state of the electrochemical compression air conditioner are adjusted.
In some optional embodiments, the method further comprises:
if the hydrogen gas reversing signal is monitored, then:
changing the gas flow circulation direction of the hydrogen in the electrochemical air conditioning system; wherein the changing of the gas flow circulation direction of the hydrogen gas comprises: changing the direction of the first hydrogen flow path into the direction of the second hydrogen flow path, or changing the direction of the second hydrogen flow path into the direction of the first hydrogen flow path; wherein the first hydrogen flow path is from the first hydrogenation metal reactor to the second hydrogenation metal reactor through the electrochemical compression device, and the second hydrogen flow path is from the second hydrogenation metal reactor to the first hydrogenation metal reactor through the electrochemical compression device.
In some optional embodiments, the method further comprises:
if the alarm signal is monitored, the following steps are carried out:
gradually reducing the voltage gear of the power supply voltage of the electrochemical air-conditioning system until the system stops alarming; the voltage can be finely adjusted in the process of adjusting the state of the system by gradually reducing the voltage gear, the operation of the system is influenced due to the overlarge adjustment amplitude, and the mode of gradually reducing the gear is favorable for maintaining the service life of the system.
In some optional embodiments, the setting the power supply voltage of the electrochemical compression device in the electrochemical air conditioning system according to the temperature difference between the ambient temperature and the target temperature includes:
the smaller the temperature difference between the ambient temperature and the target temperature is, the smaller the power supply voltage is;
the power consumption can be reduced as much as possible while the environmental temperature is adjusted by the adjusting strategy, so that the method is more economic and environment-friendly;
optionally, when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, setting the power supply voltage to a first voltage V1; and/or the presence of a gas in the gas,
when the temperature difference between the ambient temperature and the target temperature is greater than or equal to a second set value Δ t2, setting the power supply voltage to a third voltage V3; and/or the presence of a gas in the gas,
setting the supply voltage to a second voltage V2 when a temperature difference between an ambient temperature and a target temperature is greater than the first set value Δ t1 and less than the second set value Δ t 2;
wherein V1< V2< V3, Δ t1< Δ t 2;
the implementation mode not only can achieve the purpose of adjusting the power supply voltage of the electrochemical compressor in a direct proportion according to the temperature difference, but also is simple and reliable in scheme implementation and beneficial to large-scale use of products.
The setting of the parameters Δ t1, Δ t2, V1, V2, V3 and the like is not available or referred to by common knowledge or conventional technical means. In some exemplary embodiments, V1 is the power supply voltage when the electrochemical compression device operates most efficiently, V2 is the power supply voltage when the electrochemical compression device operates stably, and V3 is the power supply voltage when the cooling capacity of the electrochemical compression device is maximum. According to the embodiment, the V1, the V2 and the V3 can regulate the ambient temperature with the highest efficiency, make the ambient temperature approach the target temperature as soon as possible, save more power consumption and prolong the service life of the electrochemical compression device.
In some exemplary embodiments, Δ t1 can be between 0.5 ℃ and 1 ℃ and Δ t2 can be between 1.5 ℃ and 3 ℃. In some alternative embodiments Δ t1 ═ 0.5 ℃, 0.6 ℃, 0.7 ℃, 0.8 ℃, or 0.9 ℃, Δ t2 ═ 1.5 ℃, 1.6 ℃, 1.7 ℃, 1.8 ℃, 1.9 ℃, or 2 ℃. Setting Δ t1, Δ t2 according to this embodiment can adjust the supply voltage of the electrochemical compression device without affecting the comfort of the user, and is favorable for improving the user experience.
In some optional embodiments, after the changing the circulation direction of the flow of hydrogen, the method further comprises:
changing the flow direction of a heat exchange medium in the electrochemical air conditioning system in a delayed manner; the time of the delay is a set time, and the set time can be between 5 seconds and 1 minute. Preferably, the set time is 5 seconds, 10 seconds, 15 seconds, 20 seconds, 25 seconds, 30 seconds, 40 seconds, 50 seconds, or 1 minute. This alternative embodiment can effectively simplify the complexity of the system processing. In this alternative embodiment, the electrochemical air conditioner further includes a timer for starting timing after the controller changes the conduction directions of the first three-way valve and the second three-way valve.
The above embodiment provides a control method different from a traditional steam compression type brand new air conditioning system, and the power supply voltage of the electrochemical air conditioning system can be adjusted according to the current operation state of the electrochemical air conditioning system, so that the electrochemical air conditioning system can reach a better operation state.
For better illustration of the solution described in the above embodiments, fig. 4 shows a specific flow chart of an exemplary embodiment of the control method of the electrochemical air conditioning system:
as shown in fig. 4, the control method specifically operates as follows:
after an electrochemical air conditioning system is powered on (step S401), judging whether a hydrogen reversing signal STRh2 is monitored to be 1 (step S402), if not, firstly judging whether the system alarms (step S403), if not, indicating that the electrochemical air conditioning system is in a stable operation state, and at the moment, continuously monitoring the electrochemical air conditioning system, and adjusting a power supply voltage and the rotating speed of a direct current pump according to a monitoring condition (steps S404-S411); if the system gives an alarm, adjusting the power supply voltage to remove the alarm (steps S408-S409); if the system monitors a hydrogen reversing signal, switching the gas flow circulation direction of the hydrogen, and switching the flow direction of the heat exchange medium in a delayed manner, namely switching between a first flow direction and a second flow direction (steps S412-S415);
in step S403, if the compressor protection signal is monitored to be an early warning, triggering a system to alarm;
wherein the compressor protection signal comprises: an internal pressure threshold signal SP of the electrochemical compression device or a diaphragm voltage threshold signal SV of the electrochemical compression device;
vclmac maximum potential difference of diaphragm of electrochemical compression device
SV electrochemical compression device membrane voltage threshold signal
The electrochemical compression device is formed by stacking a plurality of membrane structures, and each membrane structure is limited by a maximum potential difference. When the electrochemical compression device works, the potential difference of each layer structure is monitored in real time and cannot exceed Vclmac, when the potential difference of each layer structure does not exceed Vclmac, the electrochemical compression device outputs a SV-0 signal, otherwise, the SV-1 signal is output;
pinmax maximum pressure inside electrochemical compression device
SP: internal pressure threshold signal of electrochemical compression device
The MHx has a maximum tolerable pressure Pinmax because it is limited by design and fabrication processes and takes into account the reaction pressure range of the internal hydrogenated metal and hydrogen. When the pressure inside the MHx is lower than Pinmax, outputting a signal SP which is 0 by the electrochemical compression device, otherwise, outputting a signal SP which is 1;
when SV is 1 or SP is 1, indicating that the protection signal of the compressor is early warning, namely prompting the system to send an alarm;
in steps S404-S411, adjusting the power supply voltage by determining the temperature difference between the ambient temperature and the target temperature; the strategy is that the smaller the temperature difference between the ambient temperature and the target temperature is, the smaller the power supply voltage of the electrochemical compression device is;
setting the supply voltage of the electrochemical compression device to a first voltage V1 when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first setpoint Δ t1, such as 0.5 ℃; and/or the presence of a gas in the gas,
setting the supply voltage of the electrochemical compression device to a third voltage V3 when the temperature difference between the ambient temperature and the target temperature is greater than or equal to a second set value Δ t2, Δ t as shown in fig. 4; and/or the presence of a gas in the gas,
setting a supply voltage of the electrochemical compression device to a second voltage V2 when a temperature difference between an ambient temperature and a target temperature is greater than the first set value Δ t1 and less than the second set value Δ t 2;
wherein V1< V2< V3, Δ t1< Δ t 2;
optionally, the V1 is the maximum efficiency voltage of the electrochemical compression device, the V2 is the stable voltage of the electrochemical compression device, and the V3 is the voltage corresponding to the maximum cooling capacity of the electrochemical compression device;
in steps S412-S415, when the system detects that the hydrogen reversing signal STRh2 is 1, the hydrogen gas circulation direction may be switched by controlling the conducting directions of the first three-way valve and the second three-way valve on the hydrogen gas flow pipeline as shown in fig. 1 and 2; it should be noted here that after the gas flow circulation direction of the hydrogen gas is switched, the reaction processes of the first hydrogenation metal reactor and the second hydrogenation metal reactor are not switched immediately, and a buffer stage is required, so that the flow direction of the heat exchange medium needs to be switched in a delayed manner in the control scheme; as shown in fig. 4, during step S413, the timer starts timing and sends a heat exchange medium reversing signal (STRsys ═ 1) to change the flowing direction of the heat exchange medium in the electrochemical air conditioning system (step S414), where the preset time period may be an average time period required by monitoring that the temperature Tmhx of the heat exchange medium of the hydrogenation metal reactor in which the hydrogen desorption reaction occurs is less than the external ambient temperature Tamb after hydrogen gas is reversed in multiple experiments; the specific switching mode can be participated in the embodiment of the system, and the flow direction of the heat exchange medium is switched by switching the on-off state of each two-way valve; step S417, after the switching of the heat exchange medium flowing direction is completed, resetting the hydrogen gas reversing signal and the heat exchange medium reversing signal, that is, setting STRh2 to 0 and STRsys to 0; when the hydrogen reversing signal is reset, the system cannot monitor the signal of the STRh2 being 1, the system enters monitoring alarm (steps S408-S409) and adjusts the power supply voltage (steps S404-S411) as described above;
steps S408 and S409 describe a control method how to release the alarm after the system alarms, and if the system alarms, that is, after detecting that SV is 1 or SP is 1, gradually lower the gear according to the current power supply voltage Vin until the system stops alarming;
optionally, in the processes of steps S408 and S409, after each alarm, step S418 is performed to detect whether the power supply voltage Vin is greater than 0, and a target gear is determined according to the value of Vin, where the target gear is a gear that is one level lower than the gear at which the value of Vin is located; if Vin is 0, no power is supplied to the electrochemical compression device; in general, the lowest gear is not the one that sets Vin to 0, but is the one that is set to the lowest and maintains system performance; in the process, every time the gear is lowered, the process returns to step S403, and if the system still alarms, the operation of lowering the gear in steps S408 and S409 is executed again.
As shown in fig. 5, the present invention also provides an apparatus for controlling the electrochemical air conditioning system in the above embodiment;
in some demonstrative embodiments, apparatus 500 may include:
the monitoring unit 501 is used for monitoring a hydrogen reversing signal and an alarm signal;
a setting unit 502, configured to set a power supply voltage of an electrochemical compression device in the electrochemical air conditioning system according to a temperature difference between an ambient temperature and a target temperature if the monitoring unit 501 does not monitor the hydrogen gas reversing signal and the alarm signal;
wherein the alarm signal comprises: an internal pressure threshold signal and a diaphragm voltage threshold signal of the electrochemical compression device; the hydrogen reversing signal is sent by the electrochemical compression device according to the state monitoring result of at least one of the hydrogenation metal reactors in which the hydrogen absorption reaction occurs.
In some optional embodiments, the apparatus 500 further comprises:
the hydrogen reversing unit 503 is configured to change an airflow circulation direction of hydrogen in the electrochemical air conditioning system after the monitoring unit 501 monitors the hydrogen reversing signal;
a stop alarm unit 504, configured to gradually lower a voltage level of the power supply voltage of the electrochemical air conditioning system after the monitoring unit monitors 501 the alarm signal until the system stops alarming;
the heat exchange medium reversing unit 505 is used for changing the flow direction of the heat exchange medium in the electrochemical air conditioning system in a delayed manner after the hydrogen reversing unit 503 changes the airflow circulation direction of the hydrogen in the electrochemical air conditioning system; wherein, the time of the delay is a set time.
The embodiment provides a control device which is different from a traditional steam compression type brand new air conditioning system, and working medium conditions are provided for a heat pump air conditioner by controlling an electrochemical heat absorption and release process; and the control device can adjust the power supply voltage of the electrochemical air-conditioning system according to the current running state of the electrochemical air-conditioning system, so that the electrochemical air-conditioning system reaches a better running state.
It is emphasized that the current research on electrochemical air conditioning is still in the beginning, and the published data is extremely limited. All technical examples, technical embodiments and technical details provided herein have no common general knowledge, no conventional technical means or no technical means available for reference, and no other technical means available for reference or reference is essential.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (3)
1. An electrochemical air conditioning system, characterized in that said system comprises: the system comprises a power supply, an electrochemical compression device, a first hydrogenation metal reactor, a second hydrogenation metal reactor, a controller, a monitoring unit, a setting unit, a first heat exchanger and a second heat exchanger;
the power supply is used for supplying power to the electrochemical compression device;
the electrochemical compression device is arranged between the first hydrogenation metal reactor and the second hydrogenation metal reactor and is used for transmitting and compressing hydrogen;
the first heat exchanger and the second heat exchanger can be connected with the first hydrogenation metal reactor or the second hydrogenation metal reactor for heat exchange through a heat exchange medium circulation pipeline;
the first heat exchanger is used for being connected with the first hydrogenation metal reactor through a first input pipeline provided with a first electromagnetic valve and a first output pipeline provided with a second electromagnetic valve when being conducted in a first conduction direction; when the reactor is conducted in a second conduction direction, the reactor is connected with the second hydrogenation metal reactor through a second input pipeline provided with a third electromagnetic valve and a second output pipeline provided with a fourth electromagnetic valve;
the second heat exchanger is used for being connected with the second hydrogenation metal reactor through a third input pipeline provided with a fifth electromagnetic valve and a third output pipeline provided with a sixth electromagnetic valve when being conducted in the first conduction direction; when the second conduction direction is conducted, the second conduction direction is connected with the first hydrogenation metal reactor through a fourth input pipeline provided with a seventh electromagnetic valve and a fourth output pipeline provided with an eighth electromagnetic valve;
the controller is configured to control the first solenoid valve, the second solenoid valve, the fifth solenoid valve, and the sixth solenoid valve to be turned on and other solenoid valves to be turned off when the first conduction direction is turned on; when the second conduction direction is conducted, the first electromagnetic valve, the second electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, and other electromagnetic valves are conducted;
the monitoring unit is used for monitoring a hydrogen reversing signal and an alarm signal;
the setting unit is used for setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the ambient temperature and the target temperature when the monitoring unit does not monitor the hydrogen reversing signal and the alarm signal;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the system further comprises: a hydrogen controller;
the electrochemical compression device is also used for sending a hydrogen reversing signal according to the state monitoring result of at least one of the first hydrogenation metal reactor and the second hydrogenation metal reactor in which hydrogen absorption reaction occurs;
the hydrogen controller is used for switching the gas flow circulation direction of the hydrogen between the first hydrogenation metal reactor and the second hydrogenation metal reactor after the electrochemical compression device sends the hydrogen reversing signal;
under the condition that the first hydrogenation metal reactor is a heat release end and the second hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the first hydrogenation metal reactor, and the second heat exchanger is connected with the second hydrogenation metal reactor to form a first conduction direction for the circulation of a heat exchange medium; under the condition that the second hydrogenation metal reactor is a heat release end and the first hydrogenation metal reactor is a heat absorption end, the first heat exchanger is connected with the second hydrogenation metal reactor, and the second heat exchanger is connected with the first hydrogenation metal reactor to form a second conduction direction for the circulation of a heat exchange medium;
the controller controls the switching of the first conduction direction and the second conduction direction in a delayed mode.
2. A method of controlling an electrochemical air conditioning system, comprising:
if the hydrogen reversing signal and the alarm signal are not monitored, the following steps are carried out:
setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the ambient temperature and the target temperature;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the control method further comprises the following steps: monitoring the hydrogen gas reversing signal, then: changing the gas flow circulation direction of the hydrogen in the electrochemical air conditioning system;
after the changing of the circulation direction of the hydrogen gas flow, the method further comprises the following steps: changing the flow direction of a heat exchange medium in the electrochemical air conditioning system in a delayed manner;
the heat exchange medium flow path direction includes: a first heat exchange medium flow direction, a second heat exchange medium flow direction, a third heat exchange medium flow direction, and a fourth heat exchange medium flow direction;
the flow direction of the first heat exchange medium is as follows: a direction of flow of the heat exchange medium between the first hydrogenation metal reactor and the first heat exchanger;
the flow direction of the second heat exchange medium is as follows: a direction of flow of the heat exchange medium between the second hydriding metal reactor and the second heat exchanger;
the flow direction of the third heat exchange medium is as follows: a direction of flow of the heat exchange medium between the first hydrogenation metal reactor and the second heat exchanger;
the flow direction of the fourth heat exchange medium is as follows: a direction of flow of the heat exchange medium between the second hydrogenation metal reactor and the first heat exchanger;
the control method further comprises the following steps: if the alarm signal is monitored, the following steps are carried out: reducing a voltage level of a power supply voltage of the electrochemical air conditioning system;
the setting of the power supply voltage of the electrochemical compression device in the electrochemical air conditioning system according to the temperature difference between the ambient temperature and the target temperature comprises the following steps: the smaller the temperature difference between the ambient temperature and the target temperature, the smaller the supply voltage.
3. A control apparatus of an electrochemical air conditioning system, comprising:
the monitoring unit is used for monitoring a hydrogen reversing signal and an alarm signal;
the setting unit is used for setting the power supply voltage of an electrochemical compression device in the electrochemical air-conditioning system according to the temperature difference between the ambient temperature and the target temperature if the monitoring unit does not monitor the hydrogen reversing signal and the alarm signal;
wherein when the temperature difference between the ambient temperature and the target temperature is less than or equal to a first set value Δ t1, the power supply voltage is set to a first voltage V1; and/or when the temperature difference between the environment temperature and the target temperature is greater than or equal to a second set value delta t2, setting the power supply voltage to be a third voltage V3; and/or, when the temperature difference between the ambient temperature and the target temperature is greater than the first set value at 1 and less than the second set value at 2, setting the supply voltage to a second voltage V2; wherein V1< V2< V3, Δ t1< Δ t 2; v1 is the power supply voltage when the working efficiency of the electrochemical compression device is the highest, V2 is the power supply voltage when the electrochemical compression device stably works, and V3 is the power supply voltage when the refrigerating capacity of the electrochemical compression device is the maximum;
the device further comprises:
the hydrogen reversing unit is used for changing the airflow circulation direction of the hydrogen in the electrochemical air conditioning system after the monitoring unit monitors the hydrogen reversing signal;
the stopping alarm unit is used for gradually reducing the voltage gear of the power supply voltage of the electrochemical air-conditioning system after the monitoring unit monitors the alarm signal until the system stops alarming;
and the heat exchange medium reversing unit is used for changing the flow direction of the heat exchange medium in the electrochemical air conditioning system in a delayed manner after the hydrogen reversing unit changes the airflow circulation direction of the hydrogen in the electrochemical air conditioning system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017101084879 | 2017-02-27 | ||
| CN201710108487 | 2017-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108507065A CN108507065A (en) | 2018-09-07 |
| CN108507065B true CN108507065B (en) | 2021-01-29 |
Family
ID=63373361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710312614.7A Active CN108507065B (en) | 2017-02-27 | 2017-05-05 | Electrochemical air conditioner and method for controlling electrochemical air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108507065B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069591A (en) * | 1992-07-09 | 1993-03-03 | 朱华 | " wiping shows " anti-false sealing-label and label |
| CN105910314A (en) * | 2016-04-15 | 2016-08-31 | 青岛海尔空调器有限总公司 | Electrochemical refrigerating system |
| CN106288071A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| JP6410070B1 (en) * | 2018-02-13 | 2018-10-24 | 青山 省司 | Supply rod for shaft parts |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0810093B2 (en) * | 1987-07-02 | 1996-01-31 | 北海道電力株式会社 | Control method for air conditioning system using metal hydride |
| JP2652456B2 (en) * | 1990-04-23 | 1997-09-10 | 三洋電機株式会社 | Operating method of heat utilization system using hydrogen storage alloy |
-
2017
- 2017-05-05 CN CN201710312614.7A patent/CN108507065B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069591A (en) * | 1992-07-09 | 1993-03-03 | 朱华 | " wiping shows " anti-false sealing-label and label |
| CN105910314A (en) * | 2016-04-15 | 2016-08-31 | 青岛海尔空调器有限总公司 | Electrochemical refrigerating system |
| CN106288071A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| JP6410070B1 (en) * | 2018-02-13 | 2018-10-24 | 青山 省司 | Supply rod for shaft parts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108507065A (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108470925B (en) | Fuel cell starting system and method | |
| US20120189893A1 (en) | Temperature-controlled battery system | |
| WO2023226425A1 (en) | Hydrogen production system, and thermal management method and apparatus therefor | |
| CN109654887B (en) | Circulating water cooling system and automatic control method thereof | |
| CN104848489A (en) | Control method for air conditioner | |
| CN108507114B (en) | Method and device for controlling electrochemical air conditioning system | |
| CN114824374A (en) | Temperature control device for all-vanadium redox flow battery | |
| CN108507063B (en) | Electrochemical air conditioning system, control method and device | |
| CN108507062B (en) | Electrochemical air conditioning system, control method and device | |
| CN108507071B (en) | Electrochemical air conditioner and method for controlling electrochemical air conditioner | |
| CN108507059B (en) | Electrochemical air conditioner and method for controlling electrochemical air conditioner | |
| CN108507061B (en) | Air conditioner | |
| CN108507065B (en) | Electrochemical air conditioner and method for controlling electrochemical air conditioner | |
| CN108507068B (en) | Method and device for controlling electrochemical air conditioning system | |
| CN108507064A (en) | Electrochemistry air-conditioning system and its control method | |
| CN107796089B (en) | Reversing control method for metal hydride heat exchanger of electrochemical refrigeration system | |
| CN202757232U (en) | Full liquid type central air-conditioning unit | |
| CN212673577U (en) | Improved temperature control system | |
| CN205606839U (en) | Safety mechanism for indirect cold water cold -storage central air conditioning of putting of direct cold -storage | |
| JP2019077924A (en) | Hydrogen production, storage, and consumption system | |
| JP2010192141A (en) | Coolant circuit system | |
| CN108692399A (en) | Electrochemistry air-conditioning system and its control method | |
| CN113654141A (en) | Method and device for controlling electrochemical refrigeration system and electrochemical refrigeration system | |
| CN108507067A (en) | Electrochemistry air-conditioning system and its control method | |
| CN113465136A (en) | Control method and control device for refrigeration system and intelligent air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201228 Address after: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant after: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant before: QINGDAO HAIER SMART TECHNOLOGY R&D Co.,Ltd. Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |