CN114135949B - PEMFC combined fresh air purifying, dehumidifying and humidifying device and control method thereof - Google Patents

PEMFC combined fresh air purifying, dehumidifying and humidifying device and control method thereof Download PDF

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Publication number
CN114135949B
CN114135949B CN202111447669.1A CN202111447669A CN114135949B CN 114135949 B CN114135949 B CN 114135949B CN 202111447669 A CN202111447669 A CN 202111447669A CN 114135949 B CN114135949 B CN 114135949B
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air
fresh air
pemfc
heat exchanger
solid adsorbent
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CN114135949A (en
Inventor
蔡姗姗
邹雨琦
涂正凯
李松
罗小兵
张佳辉
李若琳
陈傲天
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04029—Heat exchange using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
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  • Signal Processing (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
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  • Drying Of Gases (AREA)
  • Central Air Conditioning (AREA)

Abstract

The invention belongs to the technical field of distributed energy and air conditioning, and discloses a PEMFC combined fresh air purifying and dehumidifying and humidifying device and a control method thereof, wherein the PEMFC combined fresh air purifying and dehumidifying and humidifying device is provided with a box body, the box body is provided with a shaft through a shaft hole, the shaft penetrates through a heat insulation material, and one end of the shaft is connected with a motor; fins are arranged on the upper side of the heat insulation material and coated with MOFs adsorption material; the upper side of the box body is provided with an upper half air inlet and outlet, and the lower side of the box body is provided with a lower half air inlet and outlet. The fresh air purifying and humidifying device is connected with the first heat exchanger. Compared with the traditional fresh air dehumidifying device, the PEMFC provided by the invention can effectively avoid the condition that cold and heat are offset, effectively reduce the unit cost and achieve the purposes of energy conservation and environmental protection; can meet the application requirements of the solid adsorbent.

Description

PEMFC combined fresh air purifying, dehumidifying and humidifying device and control method thereof
Technical Field
The invention belongs to the technical field of distributed energy and air conditioning, and particularly relates to a PEMFC combined fresh air purifying and dehumidifying and humidifying device and a control method thereof.
Background
At present, energy is a pulse for national economy development, is an important support for national development, and along with the global high attention to the development of new energy, the hydrogen energy technology becomes the competitive front of a new technological revolution and industrial transformation. At present, the technology of hydrogen production, storage, transportation, use and the like is mature, safe and reliable, and Proton Exchange Membrane Fuel Cells (PEMFCs) taking hydrogen as raw materials are rapidly developed. The PEMFC has the advantages of high energy conversion efficiency, no emission pollution, small influence on the power generation efficiency due to load, wide raw material sources and the like, is an energy-saving and environment-friendly technology with great commercial popularization potential, and well accords with the current policy of 'entering ten thousand families' of hydrogen. Commercial proton exchange membrane fuel cells are limited in power generation efficiency by polarization losses generally ranging from (40-60)%, and almost half of the energy is still dissipated in the form of low-grade heat energy (70-100) DEG C, resulting in huge energy waste. When the PEMFC is operated, a great amount of waste heat is generated, and how to use the waste heat is a hot problem of current research. The Combined Heat and Power (CHP) system is an energy system that uses a single or multiple driving energy sources to simultaneously generate electric energy and available heat energy, thereby realizing efficient utilization of energy steps.
The fresh air system is a device which can meet the requirement of indoor fresh air ventilation by using special equipment to send fresh air to the indoor according to one side of a closed indoor and discharging the fresh air from the other side of the closed indoor to the outdoor through the special equipment, and a fresh air flow field is formed in the indoor. The adsorption type fresh air system is a heat driven dehumidification and humidification technology, and can adopt various low-grade heat sources, so that waste heat generated during the operation of the PEMFC can be applied to the adsorption type fresh air system. The solid adsorption dehumidification is an effective air dehumidification method, and common solid adsorption dehumidification materials comprise silica gel, activated alumina, molecular sieves, activated carbon, MOFs materials and the like, and compared with absorption dehumidification regeneration, the method has the following advantages: (1) the system has simple structure and convenient control; (2) non-toxic, the adsorbent will not evaporate and remain in the air; and (3) the system investment and the operation cost are low. Because of the various advantages, adsorption type dehumidification regeneration technology has been widely focused and studied. In addition, the solid adsorbent can fully contact dust particles in the air by utilizing the large surface area and the porous structure of the solid adsorbent according to the porous characteristic, and capture particle pollutants through intermolecular interaction force. Therefore, the effective combination of the PEMFC and the fresh air dehumidifier has important practical significance.
Through the above analysis, the problems and defects existing in the prior art are as follows: pollutant particles in fresh air cannot be effectively reduced in the prior art, and the indoor air quality is reduced.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a PEMFC combined fresh air purifying and dehumidifying and humidifying device and a control method thereof.
The invention is realized in such a way that a fresh air purifying and dehumidifying and humidifying device which is combined with a PEMFC is provided with a fresh air purifying and humidifying device;
the fresh air purifying and humidifying device is provided with a box body, the box body is provided with a shaft through a shaft hole, the shaft penetrates through the heat insulation material, and one end of the shaft is connected with the motor;
the upper side of the heat insulation material is provided with fins which are coated with MOFs adsorption material.
Further, an upper half air inlet and outlet is arranged on the upper side of the box body, and a lower half air inlet and outlet is arranged on the lower side of the box body.
Further, an air inlet at the upper half part of the fresh air purification and humidity control device is connected with a first heat exchanger, the first heat exchanger is connected with an air return opening of a house or a factory building, and an air outlet at the upper half part of the fresh air purification and humidity control device is connected with an air outlet through a first fan; the air inlet of the lower half part of the fresh air purifying and humidifying device is connected with a second heat exchanger, the second heat exchanger is connected with the outlet end of a second fan, a fresh air pipeline and a return air pipeline II are converged and connected with the inlet end of the second fan, and the return air pipeline II is controlled by an air valve to be opened and closed; the air outlet of the lower half part of the fresh air purifying and humidifying device is connected with a house or a factory building through a rectangular air pipe.
Further, the second heat exchanger is connected with a second valve, the second valve is connected with a flowmeter, the flowmeter is connected with a water pump, and cooling water flows into the flowmeter from the water pump; the water pump is connected with the PEMFC structure, and the PEMFC structure is connected with the first valve.
Further, the PEMFC structure is a PEMFC fuel cell and is connected with the motor, the first fan and the second fan through wires respectively.
Further, the PEMFC structure is provided with current collecting plates, a galvanic pile is arranged between the current collecting plates, an insulating plate is arranged on the outer side of the current collecting plates, and an end plate is arranged on the outer side of the insulating plate;
the collector plates uniformly distribute reaction gas, collect and conduct current, and the insulating plates play a role in blocking the end plates and the collector plates; the end plate is provided with an air inlet channel and an air outlet channel for cooling water, and a pretightening force is applied to the electric pile through a screw; the electric pile is formed by stacking single cells, each single cell is composed of a gas diffusion layer, a catalyst layer, a proton exchange membrane and a graphite bipolar plate, a cathode gas flow channel and an anode gas flow channel are arranged between the graphite bipolar plates, and a cooling water flow channel is arranged inside the graphite bipolar plates.
Further, a first temperature and humidity sensor and a second temperature and humidity sensor are arranged on the upper side of the fresh air purifying and humidity regulating device, and the first temperature and humidity sensor and the second temperature and humidity sensor are respectively connected with an automatic control switch through wires;
The first temperature and humidity sensor is fixed in the upper half area of the fresh air purification and humidity control device, and the second temperature and humidity sensor is fixed in the lower half area of the fresh air purification and humidity control device.
Further, the motor is installed on the fresh air purification and humidity control device and is connected with the automatic control switch through a wire, and the fresh air purification and humidity control device is connected with a house and a long house through a second soft joint.
Further, the heat insulation material is divided into two parts, one part of the heat insulation material close to the box body part is fixed on the inner wall of the box body, and the other part of the heat insulation material can rotate along with the shaft;
the invention also aims to provide a control method of the PEMFC combined fresh air purifying and dehumidifying and humidifying device, which comprises the following steps:
the PEMFC is utilized to provide the electric quantity required in the fresh air purification, dehumidification and humidification processes and the heat required by the regeneration of the solid adsorbent; the generated electricity of the PEMFC is mainly used for a fan of a ventilating duct, a water pump of a cooling water loop and a motor for controlling the rotating shaft to rotate, and heat generated by the PEMFC during electricity generation is conveyed to a waste heat exchanger side in the ventilating duct through cooling water so as to heat air introduced into a fresh air dehumidifier.
Regenerating the adsorbent by using the waste heat of the PEMFC; the waste heat of the PEMFC is taken away by cooling water, and the two waste heat exchangers can be respectively connected by switching the valves on the two cooling water loops, so that the heat exchange of the waste heat exchangers corresponding to the upper half part and the lower half part of the fresh air humidity regulator is respectively realized;
In a dehumidification mode, a waste heat exchanger corresponding to the lower half part of the fresh air humidity regulator is not connected with the PEMFC, air which is led into a room is sent to the room after the solid adsorbent in the lower half part of the fresh air humidity regulator absorbs moisture, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, indoor return air is sent to the upper half part of the fresh air humidity regulator after being heated at the waste heat exchanger, the regeneration process of the solid adsorbent is completed, and when the solid adsorbent in the lower half part of the fresh air humidity regulator reaches saturation, a motor control rotating shaft drives the dry solid adsorbent in the upper half part of the fresh air humidity regulator to be transferred to the lower half part for absorbing moisture, and the circulation is performed; in the humidification mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is not connected with the PEMFC, indoor return air is discharged outdoors after being absorbed by the solid adsorbent, the waste heat exchanger corresponding to the lower half part of the fresh air humidity regulator is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, air which is led into the room is heated at the waste heat exchanger and then is sent into the lower half part of the fresh air humidity regulator, the desorption process of the solid adsorbent is completed, so that the moisture content of the air which is led into the room is increased, and when the solid adsorbent in the lower half part of the fresh air humidity regulator is dried, the motor control rotating shaft drives the solid adsorbent which is absorbed by the upper half part of the fresh air humidity regulator to be transferred to the lower half part for desorption, and thus circulation is realized, and dehumidification and humidification of wet air are realized by using the waste heat of the PEMFC.
The multi-operation mode operation of dehumidification and humidification is realized through the switching of the waste heat exchanger;
the switching of multiple treatment modes of fresh air latent heat load and return air latent heat load is carried out through the switching of the air duct; considering that the device is suitable for different building types, the air valve is arranged on the air return pipeline leading to the lower half part of the fresh air humidity regulator, the switch of the air valve corresponds to two ventilation schemes, for a large building, the scheme one provides an air treatment method for mixing fresh air and return air, the latent heat load related by the scheme only comprises fresh air load, for a small building, the scheme two provides an air treatment method for completely fresh air, and the latent heat load related by the scheme is the latent heat load in the whole room.
Fresh air purification is implemented by replacing the types of the solid adsorbents, and regeneration is realized on the solid adsorbents with saturated adsorption through a waste heat exchanger. According to the invention, MOFs material is adopted as a solid adsorbent, through adsorption and analysis, not only can fresh air dehumidification and humidification be realized, but also pollutant particles in fresh air can be reduced, so that the purposes of saving energy and protecting environment and improving indoor air quality are achieved; in the humidification mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is not connected with the PEMFC, indoor return air is discharged outdoors after being absorbed by the solid adsorbent, when the solid adsorbent in the lower half part of the fresh air humidity regulator is dried, the motor control rotating shaft drives the solid adsorbent in the upper half part of the fresh air humidity regulator to be absorbed by the solid adsorbent in the lower half part for desorption, and the circulation is performed.
Further, the multiple operation mode operation for realizing dehumidification and humidification through the switching of the waste heat exchanger comprises the following steps:
dehumidifying: the automatic control switch controls the first valve to be opened and the second valve to be closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the first valve and the first heat exchanger, and finally returns to the PEMFC cooling water inlet to complete cooling water heat exchange circulation; according to different building types, different dehumidification methods are utilized to dehumidify indoor return air;
humidification: the automatic control switch controls the second valve to be opened, the first valve is closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the second valve and the second heat exchanger, and finally returns to the PEMFC cooling water inlet to complete a cooling water heat exchange cycle; according to different building types, different humidification methods are used for humidifying indoor return air.
Further, the different dehumidification methods include:
dehumidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline enters the first heat exchanger for heating through a rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, the air flows outdoors through the first fan and the air outlet, the second return air pipeline is mixed with the fresh air at the air inlet through the air valve, and flows through the second fan and the second heat exchanger to enter the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, the aim of dehumidification is achieved, and the air passes through the air pipe to the house or the factory building;
Dehumidification method 2: the air valve is closed, the return air of a house or a factory building is fully heated by entering the first heat exchanger through the rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, finally, the fresh air flows outdoors through the first fan and the air outlet, enters from the air inlet, flows through the second fan and the second heat exchanger, enters into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, and the aim of dehumidification is achieved.
Further, the different humidification methods include:
humidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline passes through the first heat exchanger through a rectangular air pipe to enter the upper half area of the fresh air purification and humidity control device, solid adsorbent in the area absorbs moisture, the water vapor content of air in the corresponding air pipe is reduced, and the air flows outdoors through the first fan and the air outlet; the second return air pipeline is mixed with fresh air at the air inlet through an air valve, flows through a second fan and enters a second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, and the water vapor content of the air in the corresponding air pipe is increased, so that the aim of humidifying is fulfilled; then enters a house or a factory building through an air pipe;
Humidification method 2: the air valve is closed, all return air of a house or a factory building enters the upper half area of the fresh air purification and humidity control device through the first heat exchanger, solid adsorbent in the area absorbs moisture, the water vapor content of air in a corresponding air pipe is reduced, and finally the air flows outdoors through the first fan and the air outlet, fresh air enters from the air inlet, flows through the second fan and enters into the second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, and the water vapor content of the air in the corresponding air pipe is increased, so that the aim of humidifying is fulfilled.
By combining all the technical schemes, the invention has the advantages and positive effects that:
the invention innovatively provides the power required by the device and the heat required by the regeneration of the solid adsorbent for the PEMFC; regenerating the adsorbent by utilizing the waste heat of PEMFC energy supply equipment; the multiple requirements of dehumidification and humidification are realized through the switching of the waste heat exchanger; the multiple treatment modes of fresh air latent heat load and return air latent heat load are realized through the switching of the air channels; the purification function can be realized by replacing the solid adsorbent, and the solid adsorbent with saturated adsorption can be regenerated by the waste heat exchanger.
Compared with the traditional fresh air dehumidifying device, the invention can effectively avoid the situation that cold and heat are counteracted, effectively reduce the unit cost, achieve the purposes of energy conservation and environmental protection, realize the multiple requirements of dehumidification and humidification through the switching of the waste heat exchanger, and realize the multiple treatment modes of fresh air latent heat load and return air latent heat load through the switching of an air duct; can meet the application requirements of the solid adsorbent. Meanwhile, the MOFs material is used as a solid adsorbent, and through adsorption and analysis, not only can the fresh air be dehumidified and humidified, but also pollutant particles in the fresh air can be reduced, so that the purposes of saving energy and protecting environment and improving the indoor air quality are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a combined PEMFC fresh air purifying and dehumidifying-humidifying device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of connection structures between a PEMFC structure and a motor and a fan according to an embodiment of the present invention.
Fig. 3 is an external view of a fresh air purifying and humidifying device provided by an embodiment of the invention.
Fig. 4 is a left side view of the fresh air purifying and humidifying device provided by the embodiment of the invention.
Fig. 5 is a cross-sectional view of a fresh air purifying and humidifying device provided by an embodiment of the invention.
FIG. 6 is an internal block diagram provided by an embodiment of the present invention
Fig. 7 is a schematic structural diagram of a PEMFC provided in an embodiment of the present invention.
In the figure: 1. a first valve; 2. an air outlet; 3. a second fan; 4. a second heat exchanger; 5. a first temperature and humidity sensor; 6. a second temperature and humidity sensor; 7. fresh air purifying and humidifying device; 8. a first heat exchanger; 9. a first fan; 10. a motor; 11. a second valve; 12. a flow meter; 13. an air valve; 14. a water pump; 15. a PEMFC structure; 16. an air inlet; 17. a fin; 18. an air inlet and an air outlet at the upper half part; 19. a case; 20. a shaft; 21. a lower half air inlet and outlet; 22. a heat insulating material; 23. a current collecting plate; 24. an insulating plate; 25. an end plate; 26. and (5) pile.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Aiming at the problems existing in the prior art, the invention provides a PEMFC combined fresh air purifying and dehumidifying and humidifying device and a control method thereof, and the invention is described in detail below with reference to the accompanying drawings.
The PEMFC combined fresh air purifying and dehumidifying and humidifying device provided by the invention can be implemented by other steps by those skilled in the art, and the PEMFC combined fresh air purifying and dehumidifying and humidifying device provided by the invention of fig. 1 is only one specific embodiment.
As shown in fig. 1, the combined supply fresh air purifying and dehumidifying and humidifying device for PEMFC provided by the embodiment of the invention comprises: an air pipe system and a PEMFC cooling water circulating pipeline system;
the duct system includes: the air conditioner comprises a first fan 9, a second fan 3, a first heat exchanger 8, a second heat exchanger 4, a first temperature and humidity sensor 5, a second temperature and humidity sensor 6, a fresh air purifying and humidifying device 7, a motor 10, an air outlet 2 and an air inlet 16.
The PEMFC cooling water circulation piping system includes: a second valve 11, a flow meter 12, a water pump 14, a PEMFC structure 15 and a first valve 1.
The air inlet of the upper half part of the fresh air purification and humidity control device 7 is connected with a first heat exchanger 8, the first heat exchanger 8 is connected with an air return opening of a house or a factory building through a rectangular air pipe, the air outlet of the upper half part of the fresh air purification and humidity control device 7 is connected with an air outlet 2 through a first fan 9, the air inlet of the lower half part of the fresh air purification and humidity control device 7 is connected with a second heat exchanger 4, the second heat exchanger is connected with an outlet end of a second fan 3, a fresh air pipeline and an air return pipeline II are connected with an inlet end of the second fan 3 after being combined, the air return pipeline II is controlled by an air valve, and the air outlet of the lower half part of the fresh air purification and humidity control device 7 is connected with the house or the factory building through the rectangular air pipe;
The upper side of the fresh air purifying and humidifying device 7 is provided with a first temperature and humidity sensor 5 and a second temperature and humidity sensor 6, and the first temperature and humidity sensor 5 and the second temperature and humidity sensor 6 are respectively connected with an automatic control switch through wires; a motor 10 is arranged on the fresh air purifying and humidifying device 7, and the motor 10 is connected with an automatic control switch through a wire; the fresh air purifying and humidifying device 7 is connected with houses and plants through air pipes.
The first temperature and humidity sensor 5 is fixed in the upper half area of the fresh air purification and humidity adjustment device 7, and the second temperature and humidity sensor 6 is fixed in the lower half area of the fresh air purification and humidity adjustment device 7. The area of the rectangular air pipe corresponds to the area of the air inlet and the air outlet of the fresh air purifying and humidifying device 7.
The second heat exchanger 4 is connected to a second valve 11, the second valve 11 is connected to a flow meter 12, the flow meter 12 is connected to a water pump 14, and cooling water flows from the water pump 14 into the flow meter 12. The water pump 14 is connected to the PEMFC structure 15, and the PEMFC structure 15 is connected to the first heat exchanger 8.
As shown in fig. 2, the PEMFC structure 15 is a PEMFC fuel cell, and the PEMFC structure 15 is connected with the motor 10, the first fan 9, and the second fan 3 through wires, respectively. The power generated by the PEMFC fuel cell is respectively supplied to the motor 10, the first fan 9, the second fan 3 and the water pump 14, and the heat generated by the PEMFC fuel cell 15 is completely supplied to the solid adsorbent for heating regeneration.
As shown in fig. 3 to 6, the fresh air purifying and humidifying device 7 includes: the heat insulation box comprises fins 17, a box body 19, a shaft 20, an upper half air inlet and outlet 18, a lower half air inlet and outlet 21 and a heat insulation material 22; the fins 17 are coated with adsorption materials, an upper half air inlet and outlet 18 is arranged on the upper side of the box 19, and a lower half air inlet and outlet 21 is arranged on the lower side of the box 19; the box 19 is provided with a shaft 20 through a shaft hole, the shaft 20 penetrates through a heat insulation material 22, and one end of the shaft 20 is connected with the motor 8; the upper side of the heat insulating material 22 is provided with fins 17.
The heat insulating material 22 is divided into two parts, one part of the heat insulating material close to the box body part is fixed on the inner wall of the box body, and the other part of the heat insulating material can rotate along with the shaft; under the dehumidification working condition, the adsorption material in the lower half area of the fresh air purification and humidity control device 7 reaches a saturated state, a humidity sensor transmits a humidity signal to an automatic control switch, and the automatic control switch controls the shaft 20 to rotate 180 degrees; under the humidification condition, the adsorption material in the lower half area of the fresh air purification and humidity control device reaches a dry state, the temperature and humidity sensor transmits a humidity signal to the automatic control switch, and the automatic control switch controls the shaft 20 to rotate 180 degrees.
The adsorption material is MOFs, which are porous coordination compounds with an open framework structure and are formed by connecting inorganic metal centers and organic ligands, and the MOFs have the advantages of simple synthesis, modification, large specific surface area, adjustable pores, coordination unsaturated sites and the like, and can have very large specific surface area and pore volume through reasonable component and pore structure design, so that the MOFs have high adsorption performance.
As shown in fig. 7, the PEMFC structure 15 includes: collector plate 23, insulating plate 24, end plate 25, stack 26; a pile 26 is arranged between the current collecting plates 23, an insulating plate 24 is arranged outside the current collecting plates 23, and an end plate 25 is arranged outside the insulating plate 24.
The collector plate 23 can uniformly distribute the reaction gas, collect and conduct current, and the insulating plate 24 plays a role of blocking the end plate and the collector plate; the end plate 25 has gas and cooling water inlet and outlet passages, and the pre-tightening force is applied to the electric pile through screws. The stack 26 is formed by stacking unit cells, each unit cell is composed of a gas diffusion layer, a catalyst layer, a proton exchange membrane and graphite bipolar plates, a cathode gas flow channel and an anode gas flow channel are arranged between the graphite bipolar plates, and a cooling water flow channel is arranged inside the graphite bipolar plates.
The working principle of the invention is as follows: the temperature and humidity sensor is fixed on the inner side of the box body of the fresh air purifying and humidifying device 7, and the automatic control switch is used for controlling the start and stop and the switch of the motor 10, the first valve 1 and the second valve 11; the first air valve 13 is opened, fresh air is mixed with return air in a house or a factory building at an air inlet 16, the return air is led to the house or the factory building through a second fan 3, a second heat exchanger 4 and a lower half area of a fresh air purification and humidity control device 7, the return air of the house or the factory building is divided into two paths at a return air inlet of the house or the factory building, a return air pipeline is connected with the first heat exchanger 8 and an upper half air inlet of the fresh air purification and humidity control device 7 through a rectangular air pipe, the upper half area of the fresh air purification and humidity control device 7 is sequentially connected with the first fan 9 and an air outlet 2, the second return air pipeline is connected with the air inlet 16 through a rectangular air pipe, and the fresh air and the return air are mixed and sent to the second fan 3; the second air valve 13 is closed, and all the return air of the house or the factory building enters the upper half part of the fresh air purification and humidity control device 7 through the first heat exchanger 8, and is discharged outdoors through the first fan 9 and the air outlet 2, and the fresh air is led to the house or the factory building through the air inlet 16, the second fan 3, the second heat exchanger 4 and the lower half part of the fresh air purification and humidity control device 7.
In the working process, the principle of the dehumidification mode is as follows: the automatic control switch 15 controls the first valve 1 to open and the second valve 11 to close, and the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump 14, the flowmeter 12, the first valve 1 and the first heat exchanger 8, and finally returns to the PEMFC cooling water inlet to complete a cooling water heat exchange cycle. According to different building types, two schemes exist for indoor return air, a first air valve 13 is opened, the return air of a house or a factory building is divided into two flow paths, a return air pipeline enters a first heat exchanger 8 for heating through a rectangular air pipe, then passes through the upper half area of a fresh air purification and humidity adjustment device 7, the solid adsorbent in the area is analyzed, the water vapor content of air in the corresponding air pipe is increased, finally flows outdoors through a first air blower 9 and an air outlet 2, the second return air pipeline is mixed with fresh air at an air inlet 16 through the air valve 13, flows through a second air blower 3 and a second heat exchanger 4 and enters the lower half area of the fresh air purification and humidity adjustment device 7, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, and the aim of dehumidification is achieved, and the air passes through the air pipe to the house or the factory building; the second air valve of scheme is closed, the whole return air of house or factory building gets into first heat exchanger 8 through the rectangle tuber pipe and heats, and then through fresh air purification humidifying device 7 upper half region, this regional solid adsorbent is parsed, the vapor content of air in the corresponding tuber pipe increases, finally flow outdoor through first fan 9 and air outlet 2, the fresh air gets into by air intake 16, flow through second fan 3, second heat exchanger 4 enters into fresh air purification humidifying device 7 lower half region, this regional solid adsorbent adsorbs, the vapor content of air in the corresponding tuber pipe reduces, reach the purpose of dehumidification.
The principle of the humidification mode is as follows: the automatic control switch 15 controls the second valve 11 to open, the first valve 1 is closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump 14, the flowmeter 12, the second valve 11 and the second heat exchanger 4, and finally returns to the PEMFC cooling water inlet to complete a cooling water heat exchange cycle. According to different building types, two schemes exist for indoor return air, a scheme one air valve 13 is opened, the return air of a house or a factory building is divided into two flow paths, a return air pipeline passes through a first heat exchanger 8 via a rectangular air pipe to enter the upper half area of a fresh air purification and humidity control device 7, solid adsorbents in the area absorb moisture, the water vapor content of air in the corresponding air pipe is reduced, and the air flows outdoors via a first fan 9 and an air outlet 2; the second return air pipeline is mixed with fresh air at the air inlet 16 through the air valve 13, the fresh air flows through the second fan 3, enters the second heat exchanger 4 for heating, then is introduced into the lower half area of the fresh air purification and humidity control device 7, the solid adsorbent in the area is analyzed, the water vapor content of air in the corresponding air pipe is increased, the air enters a residence or a factory building through the air pipe, the second air valve 13 is closed, the return air of the residence or the factory building is completely introduced into the upper half area of the fresh air purification and humidity control device 7 through the first heat exchanger 8, the solid adsorbent in the area absorbs moisture, the water vapor content of air in the corresponding air pipe is reduced, finally, the fresh air flows outdoors through the first fan 9 and the air outlet 2, the fresh air enters the air inlet 16, flows through the second fan 3, enters the second heat exchanger 4 for heating, then is introduced into the lower half area of the fresh air purification and humidity control device 7, the solid adsorbent in the area is analyzed, and the water vapor content of air in the corresponding air pipe is increased, and the purpose of humidification is achieved.
The control method of the combined fresh air purification, dehumidification and humidification device of the PEMFC is further described below by combining specific embodiments.
Examples
The PEMFC is utilized to provide the electric quantity required in the fresh air purification, dehumidification and humidification processes and the heat required by the regeneration of the solid adsorbent; the generated electricity of the PEMFC is mainly used for a fan of a ventilating duct, a water pump of a cooling water loop and a motor for controlling the rotating shaft to rotate, and heat generated by the PEMFC during electricity generation is conveyed to a waste heat exchanger side in the ventilating duct through cooling water so as to heat air introduced into a fresh air dehumidifier.
Regenerating the adsorbent by using the waste heat of the PEMFC; the waste heat of the PEMFC is taken away by cooling water, and the two waste heat exchangers can be respectively connected by switching the valves on the two cooling water loops, so that the heat exchange of the waste heat exchangers corresponding to the upper half part and the lower half part of the fresh air humidity regulator is respectively realized;
in a dehumidification mode, a waste heat exchanger corresponding to the lower half part of the fresh air humidity regulator is not connected with the PEMFC, air which is led into a room is sent to the room after the solid adsorbent in the lower half part of the fresh air humidity regulator absorbs moisture, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, indoor return air is sent to the upper half part of the fresh air humidity regulator after being heated at the waste heat exchanger, the regeneration process of the solid adsorbent is completed, and when the solid adsorbent in the lower half part of the fresh air humidity regulator reaches saturation, a motor control rotating shaft drives the dry solid adsorbent in the upper half part of the fresh air humidity regulator to be transferred to the lower half part for absorbing moisture, and the circulation is performed; in the humidification mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is not connected with the PEMFC, indoor return air is discharged outdoors after being absorbed by the solid adsorbent, the waste heat exchanger corresponding to the lower half part of the fresh air humidity regulator is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, air which is led into the room is heated at the waste heat exchanger and then is sent into the lower half part of the fresh air humidity regulator, the desorption process of the solid adsorbent is completed, so that the moisture content of the air which is led into the room is increased, and when the solid adsorbent in the lower half part of the fresh air humidity regulator is dried, the motor control rotating shaft drives the solid adsorbent which is absorbed by the upper half part of the fresh air humidity regulator to be transferred to the lower half part for desorption, and thus circulation is realized, and dehumidification and humidification of wet air are realized by using the waste heat of the PEMFC.
The multi-operation mode operation of dehumidification and humidification is realized through the switching of the waste heat exchanger;
the switching of multiple treatment modes of fresh air latent heat load and return air latent heat load is carried out through the switching of the air duct; considering that the device is suitable for different building types, the air valve is arranged on the air return pipeline leading to the lower half part of the fresh air humidity regulator, the switch of the air valve corresponds to two ventilation schemes, for a large building, the scheme one provides an air treatment method for mixing fresh air and return air, the latent heat load related by the scheme only comprises fresh air load, for a small building, the scheme two provides an air treatment method for completely fresh air, and the latent heat load related by the scheme is the latent heat load in the whole room.
Fresh air purification is implemented by replacing the types of the solid adsorbents, and regeneration is realized on the solid adsorbents with saturated adsorption through a waste heat exchanger. According to the invention, MOFs material is adopted as a solid adsorbent, through adsorption and analysis, not only can fresh air dehumidification and humidification be realized, but also pollutant particles in fresh air can be reduced, so that the purposes of saving energy and protecting environment and improving indoor air quality are achieved; in the humidification mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is not connected with the PEMFC, indoor return air is discharged outdoors after being absorbed by the solid adsorbent, when the solid adsorbent in the lower half part of the fresh air humidity regulator is dried, the motor control rotating shaft drives the solid adsorbent in the upper half part of the fresh air humidity regulator to be absorbed by the solid adsorbent in the lower half part for desorption, and the circulation is performed.
In a preferred embodiment, the multiple operation mode operation for dehumidification and humidification by switching the waste heat exchanger includes:
dehumidifying: the automatic control switch controls the first valve to be opened and the second valve to be closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the first valve and the first heat exchanger, and finally returns to the PEMFC cooling water inlet to complete cooling water heat exchange circulation; according to different building types, different dehumidification methods are utilized to dehumidify indoor return air;
humidification: the automatic control switch controls the second valve to be opened, the first valve is closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the second valve and the second heat exchanger, and finally returns to the PEMFC cooling water inlet to complete a cooling water heat exchange cycle; according to different building types, different humidification methods are used for humidifying indoor return air.
In a preferred embodiment, the different dehumidification methods comprise:
dehumidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline enters the first heat exchanger for heating through a rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, the air flows outdoors through the first fan and the air outlet, the second return air pipeline is mixed with the fresh air at the air inlet through the air valve, and flows through the second fan and the second heat exchanger to enter the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, the aim of dehumidification is achieved, and the air passes through the air pipe to the house or the factory building;
Dehumidification method 2: the air valve is closed, the return air of a house or a factory building is fully heated by entering the first heat exchanger through the rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, finally, the fresh air flows outdoors through the first fan and the air outlet, enters from the air inlet, flows through the second fan and the second heat exchanger, enters into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, and the aim of dehumidification is achieved.
In a preferred embodiment, the different humidification methods comprise:
humidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline passes through the first heat exchanger through a rectangular air pipe to enter the upper half area of the fresh air purification and humidity control device, solid adsorbent in the area absorbs moisture, the water vapor content of air in the corresponding air pipe is reduced, and the air flows outdoors through the first fan and the air outlet; the second return air pipeline is mixed with fresh air at the air inlet through an air valve, flows through a second fan and enters a second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, and the water vapor content of the air in the corresponding air pipe is increased, so that the aim of humidifying is fulfilled; then enters a house or a factory building through an air pipe;
Humidification method 2: the air valve is closed, all return air of a house or a factory building enters the upper half area of the fresh air purification and humidity control device through the first heat exchanger, solid adsorbent in the area absorbs moisture, the water vapor content of air in a corresponding air pipe is reduced, and finally the air flows outdoors through the first fan and the air outlet, fresh air enters from the air inlet, flows through the second fan and enters into the second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, and the water vapor content of the air in the corresponding air pipe is increased, so that the aim of humidifying is fulfilled.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.

Claims (7)

1. The PEMFC combined fresh air purifying and dehumidifying and humidifying device is characterized in that the PEMFC combined fresh air purifying and dehumidifying and humidifying device is provided with a fresh air purifying and humidifying device;
the fresh air purifying and humidifying device is provided with a box body, the box body is provided with a shaft through a shaft hole, the shaft penetrates through the heat insulation material, and one end of the shaft is connected with the motor;
fins are arranged on the upper side of the heat insulation material and coated with MOFs adsorption material;
the upper side of the box body is provided with an upper half air inlet and outlet, and the lower side of the box body is provided with a lower half air inlet and outlet;
the air inlet of the upper half part of the fresh air purifying and humidifying device is connected with a first heat exchanger, and the first heat exchanger is connected with a return air inlet of a house or a factory building; the air outlet of the upper half part of the fresh air purification and humidity adjustment device is connected with the air outlet through a first fan, and the air inlet of the lower half part of the fresh air purification and humidity adjustment device is connected with a second heat exchanger; the second heat exchanger is connected with the outlet end of the second fan, the fresh air pipeline and the second return air pipeline are converged and connected with the inlet end of the second fan, and the second return air pipeline is controlled by a switch through an air valve; the air outlet at the lower half part of the fresh air purifying and humidifying device is connected with a house or a factory building through a rectangular air pipe;
The second heat exchanger is connected with a second valve, the second valve is connected with a flowmeter, the flowmeter is connected with a water pump, and cooling water flows into the flowmeter from the water pump; the water pump is connected with the PEMFC structure, and the PEMFC structure is connected with the first valve; the PEMFC structure is a PEMFC fuel cell and is connected with the motor, the first fan and the second fan through leads respectively;
the PEMFC structure is provided with current collecting plates, a galvanic pile is arranged between the current collecting plates, an insulating plate is arranged at the outer side of the current collecting plates, and an end plate is arranged at the outer side of the insulating plate; the collector plates uniformly distribute reaction gas, collect and conduct current, and the insulating plates play a role in blocking the end plates and the collector plates; the end plate is provided with an air inlet channel and an air outlet channel for cooling water, and a pretightening force is applied to the electric pile through a screw; the electric pile is formed by stacking single cells, each single cell is composed of a gas diffusion layer, a catalyst layer, a proton exchange membrane and a graphite bipolar plate, a cathode gas flow channel and an anode gas flow channel are arranged between the graphite bipolar plates, and a cooling water flow channel is arranged inside the graphite bipolar plates;
the heat insulation material is divided into two parts, one part of the heat insulation material close to the box body part is fixed on the inner wall of the box body, and the other part of the heat insulation material can rotate along with the shaft; under the dehumidification working condition, the adsorption material in the lower half area of the fresh air purification and humidity control device reaches a saturated state, a humidity sensor transmits a humidity signal to an automatic control switch, and the automatic control switch controls the shaft to rotate 180 degrees; under the humidifying working condition, the adsorption material in the lower half area of the fresh air purifying and humidifying device reaches a dry state, a humidity signal is transmitted to an automatic control switch by a temperature and humidity sensor, and the automatic control switch controls the shaft to rotate 180 degrees;
In a dehumidification mode, a waste heat exchanger corresponding to the lower half part of the fresh air humidity regulator is not connected with the PEMFC, air which is led into a room is sent to the room after the solid adsorbent in the lower half part of the fresh air humidity regulator absorbs moisture, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, indoor return air is sent to the upper half part of the fresh air humidity regulator after being heated at the waste heat exchanger, the regeneration process of the solid adsorbent is completed, and when the solid adsorbent in the lower half part of the fresh air humidity regulator reaches saturation, a motor control rotating shaft drives the dry solid adsorbent in the upper half part of the fresh air humidity regulator to be transferred to the lower half part for absorbing moisture, and the circulation is performed; in a humidifying mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidifying machine is not connected with the PEMFC, indoor return air is discharged to the outside after being dehumidified by the solid adsorbent, the waste heat exchanger corresponding to the lower half part of the fresh air humidifying machine is communicated with a cooling water channel in the PEMFC through a water pump, a flowmeter and a valve, air which is led to the indoor is heated at the waste heat exchanger and then is sent to the lower half part of the fresh air humidifying machine, the desorption process of the solid adsorbent is completed, so that the moisture content of the air which is led to the indoor is increased, when the solid adsorbent in the lower half part of the fresh air humidifying machine is dried, a motor control rotating shaft drives the solid adsorbent in the upper half part of the fresh air humidifying machine to be desorbed in the lower half part, and the solid adsorbent after moisture absorption in the upper half part of the fresh air humidifying machine is repeatedly circulated, and dehumidification and humidification of humid air are realized by using the waste heat of the PEMFC;
The multiple operation modes for realizing dehumidification and humidification through the switching of the waste heat exchanger specifically comprise the following steps:
dehumidifying: the automatic control switch controls the first valve to be opened and the second valve to be closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the first valve and the first heat exchanger, and finally returns to the PEMFC cooling water inlet to complete cooling water heat exchange circulation; according to different building types, different dehumidification methods are utilized to dehumidify indoor return air;
humidification: the automatic control switch controls the second valve to be opened, the first valve is closed, the cooling water circulation pipeline starts from the PEMFC cooling water outlet, sequentially passes through the water pump, the flowmeter, the second valve and the second heat exchanger, and finally returns to the PEMFC cooling water inlet to complete a cooling water heat exchange cycle; according to different building types, different humidification methods are utilized to humidify indoor return air;
the switching of the multiple processing modes for carrying out the fresh air latent heat load and the return air latent heat load through the switching of the air duct specifically comprises the following steps:
an air valve is arranged on an air return pipeline leading to the lower half part of the fresh air humidity regulator, and for a large building, the switch of the air valve performs air switching treatment of mixing fresh air and return air on latent heat load only containing fresh air load; for small buildings, the switch of the air valve switches the air of the whole fresh air for the latent heat load in the whole room;
Fresh air purification is implemented by replacing the types of the solid adsorbent, and regeneration of the solid adsorbent with saturated adsorption through the waste heat exchanger specifically comprises the following steps: MOFs material is used as a solid adsorbent, and fresh air dehumidification and humidification are realized through adsorption and analysis;
in a dehumidification mode, a waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is communicated with a cooling water flow passage in the PEMFC through a water pump, a flowmeter and a valve, indoor return air is heated at the waste heat exchanger and then is sent into the upper half part of the fresh air humidity regulator to complete the regeneration process of the solid adsorbent, and when the solid adsorbent in the lower half part of the fresh air humidity regulator reaches saturation, a motor control rotating shaft drives the dry solid adsorbent in the upper half part of the fresh air humidity regulator to be transferred to the lower half part for moisture absorption, and the cycle is performed;
in the humidification mode, the waste heat exchanger corresponding to the upper half part of the fresh air humidity regulator is not connected with the PEMFC, indoor return air is discharged outdoors after being absorbed by the solid adsorbent, when the solid adsorbent in the lower half part of the fresh air humidity regulator is dried, the motor control rotating shaft drives the solid adsorbent in the upper half part of the fresh air humidity regulator to be absorbed by the solid adsorbent in the lower half part for desorption, and the circulation is performed.
2. The combined supply fresh air purifying and dehumidifying and humidifying device of claim 1, wherein a first temperature and humidity sensor and a second temperature and humidity sensor are arranged on the upper side of the fresh air purifying and humidifying device, and the first temperature and humidity sensor and the second temperature and humidity sensor are respectively connected with an automatic control switch through wires;
The first temperature and humidity sensor is fixed in the upper half area of the fresh air purification and humidity control device, and the second temperature and humidity sensor is fixed in the lower half area of the fresh air purification and humidity control device.
3. The combined supply fresh air purification and dehumidification and humidification device of claim 1, wherein the fresh air purification and humidification device is provided with a motor, the motor is connected with an automatic control switch through a wire, and the fresh air purification and humidification device is connected with a house and a factory building through an air pipe.
4. A control method of a PEMFC combined supply fresh air purification and dehumidification humidification device of the PEMFC combined supply fresh air purification and dehumidification humidification device according to any one of claims 1 to 3, wherein the control method of the PEMFC combined supply fresh air purification and dehumidification humidification device comprises the following steps:
the PEMFC is utilized to provide the electric quantity required in the fresh air purification, dehumidification and humidification processes and the heat required by the regeneration of the solid adsorbent;
regenerating the adsorbent by using the waste heat of the PEMFC;
the multi-operation mode operation of dehumidification and humidification is realized through the switching of the waste heat exchanger;
the switching of multiple treatment modes of fresh air latent heat load and return air latent heat load is carried out through the switching of the air duct;
fresh air purification is implemented by replacing the types of the solid adsorbents, and regeneration is realized on the solid adsorbents with saturated adsorption through a waste heat exchanger.
5. The method for controlling a combined supply of PEMFC for purifying fresh air and dehumidifying and humidifying a device according to claim 4, wherein the supplying of the electric quantity required for fresh air purification and dehumidifying and humidifying and the heat required for regenerating the solid adsorbent by using the PEMFC specifically comprises:
the power generated by the PEMFC is used for a fan of a ventilation pipeline, a water pump of a cooling water loop and a motor for controlling the rotation of a rotating shaft, and heat generated by the PEMFC during power generation is transmitted to a waste heat exchanger side in the ventilation pipeline through cooling water so as to heat air introduced into a fresh air dehumidifier;
the regeneration of the adsorbent by utilizing the waste heat of the PEMFC specifically comprises the following steps:
the waste heat of the PEMFC is taken away by the cooling water, and the two waste heat exchangers can be respectively connected by switching the valves on the two cooling water loops, so that the heat exchange of the waste heat exchangers corresponding to the upper half part and the lower half part of the fresh air humidity regulator is respectively realized.
6. The method for controlling a combined-supply fresh air purification and dehumidification humidification device of a PEMFC according to claim 5, wherein the different dehumidification methods comprise:
dehumidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline enters the first heat exchanger for heating through a rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, the air flows outdoors through the first fan and the air outlet, the return air pipeline II is mixed with the fresh air at the air inlet through the air valve, and flows through the second fan and the second heat exchanger to enter the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, dehumidification is achieved, and the air passes through the air pipe to the house or the factory building;
Dehumidification method 2: the air valve is closed, the return air of a house or a factory building is fully heated by entering the first heat exchanger through the rectangular air pipe, then passes through the upper half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, finally, the fresh air flows outdoors through the first fan and the air outlet, enters from the air inlet, flows through the second fan and the second heat exchanger, enters into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is adsorbed, the water vapor content of the air in the corresponding air pipe is reduced, and the aim of dehumidification is achieved.
7. The method for controlling a combined-supply fresh air purification and dehumidification humidification device of a PEMFC according to claim 5, wherein the different humidification methods comprise:
humidification method 1: the air valve is opened, the return air of the house or the factory building is divided into two flow paths, the return air pipeline passes through the first heat exchanger through a rectangular air pipe to enter the upper half area of the fresh air purification and humidity control device, solid adsorbent in the area absorbs moisture, the water vapor content of air in the corresponding air pipe is reduced, and the air flows outdoors through the first fan and the air outlet; the second return air pipeline is mixed with fresh air at the air inlet through an air valve, flows through a second fan and enters a second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, the water vapor content of the air in the corresponding air pipe is increased, and the air enters a house or a factory building through the air pipe;
Humidification method 2: the air valve is closed, all return air of a house or a factory building enters the upper half area of the fresh air purification and humidity control device through the first heat exchanger, solid adsorbent in the area absorbs moisture, the water vapor content of air in a corresponding air pipe is reduced, and finally the air flows outdoors through the first fan and the air outlet, fresh air enters from the air inlet, flows through the second fan and enters into the second heat exchanger for heating; then the air is introduced into the lower half area of the fresh air purification and humidity control device, the solid adsorbent in the area is analyzed, and the water vapor content of the air in the corresponding air pipe is increased.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2022456A1 (en) * 1989-08-17 1991-02-18 Bruce Chagnot Air to air recouperator
CN106016858A (en) * 2016-05-12 2016-10-12 上海交通大学 Air conditioning device
CN209165622U (en) * 2018-10-31 2019-07-26 杭州捷瑞空气处理设备有限公司 A kind of low dew point Revolving wheel dehumidification apparatus of self-loopa recuperation of heat
CN112728660A (en) * 2021-01-20 2021-04-30 广东美的暖通设备有限公司 Runner humidifying device, air conditioning system with same, control method and controller
CN112977003A (en) * 2021-02-24 2021-06-18 江苏大学 Cooling water waste heat utilization system of fuel cell automobile
CN113566307A (en) * 2021-08-20 2021-10-29 美的集团武汉暖通设备有限公司 Air conditioner and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2022456A1 (en) * 1989-08-17 1991-02-18 Bruce Chagnot Air to air recouperator
CN106016858A (en) * 2016-05-12 2016-10-12 上海交通大学 Air conditioning device
CN209165622U (en) * 2018-10-31 2019-07-26 杭州捷瑞空气处理设备有限公司 A kind of low dew point Revolving wheel dehumidification apparatus of self-loopa recuperation of heat
CN112728660A (en) * 2021-01-20 2021-04-30 广东美的暖通设备有限公司 Runner humidifying device, air conditioning system with same, control method and controller
CN112977003A (en) * 2021-02-24 2021-06-18 江苏大学 Cooling water waste heat utilization system of fuel cell automobile
CN113566307A (en) * 2021-08-20 2021-10-29 美的集团武汉暖通设备有限公司 Air conditioner and control method thereof

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