CN107192049B - Efficient and energy-saving micro-channel heat exchanger device and method - Google Patents

Efficient and energy-saving micro-channel heat exchanger device and method Download PDF

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Publication number
CN107192049B
CN107192049B CN201710442076.3A CN201710442076A CN107192049B CN 107192049 B CN107192049 B CN 107192049B CN 201710442076 A CN201710442076 A CN 201710442076A CN 107192049 B CN107192049 B CN 107192049B
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air
solution
micro
heat exchanger
channel
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CN201710442076.3A
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CN107192049A (en
Inventor
王刚
张群力
徐荣吉
刘芳
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/14Air-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
    • F24F3/147Air-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 with both heat and humidity transfer between supplied and exhausted air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26Drying gases or vapours
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/14Air-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
    • F24F3/1411Air-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
    • F24F3/1417Air-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 liquid hygroscopic desiccants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/14Air-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
    • F24F3/153Air-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 with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/14Air-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
    • F24F2003/1458Air-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

Abstract

An efficient and energy-saving micro-channel heat exchanger device and a method belong to the technical field of refrigeration and air conditioning. The fan passes through pipe connection air purifier, and air purifier's the other end passes through pipe connection dehydrating unit, and dehydrating unit's the other end passes through pipe connection solution pump, and the other end of solution pump passes through pipe connection solution regenerator, and the other end of solution regenerator passes through pipe connection air humidification room and export, and the export is connected to air humidification room, and dehydrating unit's the other end passes through pipe connection microchannel heat exchanger, and the other end of microchannel heat exchanger passes through pipe connection air humidification room. The invention has the advantages that the air purification principle, the chemical moisture absorption principle and the renewable technology of the salt solution are fully utilized, four problems of water drainage, defrosting, dust prevention, corrosion prevention and the like of the micro-channel heat exchanger as an evaporator in practical application can be effectively solved, and the heat exchange utilization rate and the energy-saving effect of the micro-channel are improved.

Description

Efficient and energy-saving micro-channel heat exchanger device and method
Technical Field
The invention relates to a high-efficiency energy-saving micro-channel heat exchanger device and a method, belonging to the technical field of refrigeration and air conditioning.
Background
The micro-channel heat exchanger in the prior art has four problems of water drainage, defrosting, dust accumulation and corrosion when being used as an evaporator in the refrigeration and air-conditioning industry.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a high-efficiency and energy-saving micro-channel heat exchanger device and a method.
The utility model provides a high-efficient energy-conserving microchannel heat exchanger device, the fan passes through pipe connection air purifier, pipe connection dehydrating unit is passed through to air purifier's the other end, the other end of dehydrating unit passes through pipe connection solution pump, the other end of solution pump passes through pipe connection solution regenerator, the other end of solution regenerator passes through pipe connection air humidification room and exports, the export is connected to the air humidification room, the other end of dehydrating unit passes through pipe connection microchannel heat exchanger, the other end of microchannel heat exchanger passes through pipe connection air humidification room.
The fan is an axial flow fan.
The air purifier consists of a primary filter screen, an electrostatic dust collector and a high-efficiency filter screen.
The dehumidifying device is composed of salt solution with moisture absorption characteristic, a solution spraying nozzle and a heat exchange pipe.
The microchannel heat exchanger is composed of a microchannel structure.
The air humidification chamber is composed of two air inlets and one air outlet.
The solution regenerator consists of a liquid storage device, a heater, a gas collecting tank and a gas distributor, the salt solution after moisture absorption is conveyed into the liquid storage tank and heated by the heater until the absorbed water is evaporated, and the water vapor is stored in the gas collecting tank.
A high-efficiency energy-saving micro-channel heat exchange method comprises the following steps; comprises an air dry-wet separation step, a saline solution absorption and regeneration step and an air purification step.
Also comprises the following steps; the method comprises an air circulation step, a salt solution circulation step and a steam circulation step, and four process steps of an air purification process, an air dehumidification process, a heat exchange process and a solution regeneration process are completed.
Also comprises the following steps;
step 1, conveying outdoor air into an air purifier by a fan, and fully purifying the air in the purifier through three filtering processes of a primary filter screen, an electrostatic dust collector and a high-efficiency filter screen;
step 2, the purified air enters a dehumidifier, the air is directly contacted with a saline solution with moisture absorption property in the dehumidifier, after moisture in the air is absorbed, the air becomes dry, and the saline solution is changed into a dilute solution from a concentrated solution;
step 3, conveying the dehumidified air into the movable micro-channel heat exchanger to exchange heat with a medium in the micro-channel pipe;
step 4, the dry air after heat exchange enters an air humidifying chamber and is mixed with water vapor to realize the adjustment of the air humidity;
step 3, pumping the salt solution after moisture absorption into a solution regeneration device through a solution pump, evaporating moisture absorbed by the solution by heating the salt solution with low concentration, and pumping the regenerated salt solution with high concentration into a dehumidification device through the solution pump; the evaporated water vapor is stored in the air storage tank, one part of water vapor is directly discharged to the outside, and the other part of water vapor is conveyed to the air humidifying chamber through the exhaust pipe, is mixed with the dry air after heat exchange, and adjusts the dryness and humidity of the indoor air.
The invention has the advantages that the air purification principle, the chemical moisture absorption principle and the renewable technology of the salt solution are fully utilized, four problems of water drainage, defrosting, dust prevention, corrosion prevention and the like of the micro-channel heat exchanger as an evaporator in practical application can be effectively solved, and the heat exchange utilization rate and the energy-saving effect of the micro-channel are improved.
Drawings
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein the accompanying drawings are included to provide a further understanding of the invention and form a part of this specification, and wherein the illustrated embodiments of the invention and the description thereof are intended to illustrate and not limit the invention, as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of the present invention.
The invention is further illustrated with reference to the following figures and examples.
Detailed Description
It will be apparent that those skilled in the art can make many modifications and variations based on the spirit of the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element, component or section is referred to as being "connected" to another element, component or section, it can be directly connected to the other element or section or intervening elements or sections may also be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The following examples are further illustrative and should not be construed as limiting the embodiments of the present invention.
Example 1: as shown in figure 1, a high-efficiency energy-saving micro-channel heat exchanger device, a fan 1 is connected with an air purifier 2 through a pipeline, the other end of the air purifier 2 is connected with a dehumidifying device 3 through a pipeline, the other end of the dehumidifying device 3 is connected with a solution pump 7 through a pipeline, the other end of the solution pump 7 is connected with a solution regenerator 6 through a pipeline, the other end of the solution regenerator 6 is connected with an air humidifying chamber 5 and an outlet through a pipeline, the air humidifying chamber 5 is connected with the outlet, the other end of the dehumidifying device 3 is connected with a micro-channel heat exchanger 4 through a pipeline, and the other end of the micro-channel heat exchanger 4 is connected with the air.
Example 2:
a high-efficiency energy-saving micro-channel heat exchanger device comprises seven components, namely a fan 1, an air purifier 2, a dehumidifying device 3, a micro-channel heat exchanger 4, an air humidifying chamber 5, a solution regenerator 6, a solution pump 7 and the like.
The fan 1 is an axial flow fan; the air purifier 2 consists of a primary filter screen, an electrostatic dust collector and a high-efficiency filter screen and passively adsorbs dust in the air;
the dehumidifier 3 is composed of a salt solution with moisture absorption characteristic, a solution spray nozzle and a heat exchange tube, moisture in the humid air is absorbed by the concentrated solution when fully contacting with the spray salt solution, and the concentration of the concentrated salt solution becomes thinner;
the micro-channel heat exchanger 4 consists of a micro-channel structure with a conventional size;
the air humidifying chamber 5 consists of two air inlets and one air outlet;
the solution regenerator 6 consists of a liquid storage device, a heater, a gas collecting tank and a gas distributor, the salt solution after moisture absorption is conveyed into the liquid storage tank and heated by the heater until the absorbed moisture is evaporated, and the water vapor is stored in the gas collecting tank.
An efficient energy-saving micro-channel heat exchanger device and a method thereof comprise the following steps;
the operation of the novel device of the efficient and energy-saving micro-channel heat exchanger is divided into three cycles such as air circulation, salt solution circulation and steam circulation, and meanwhile, the whole device completes four processes such as an air purification process, an air dehumidification process, a heat exchange process and a solution regeneration process.
Step 1, the outdoor air is conveyed into the air purifier by the fan, and the air is fully purified in the purifier through three filtering processes of the primary filter screen, the electrostatic dust collector and the high-efficiency filter screen.
Description of the drawings: the primary filter screen and the electrostatic dust collector can be cleaned regularly, and the high-efficiency filter screen can not be cleaned and needs to be replaced regularly according to requirements.
And 2, the purified air enters a dehumidifier, the air is directly contacted with a saline solution with moisture absorption property in the dehumidifier, the air becomes dry after moisture in the air is absorbed, and the saline solution is changed into a dilute solution from a concentrated solution.
And 3, conveying the dehumidified air into the movable micro-channel heat exchanger to exchange heat with a medium in the micro-channel tube.
And 4, allowing the dry air after heat exchange to enter an air humidifying chamber, and mixing the dry air with water vapor to realize the adjustment of the dryness and humidity of the air. (the amount of steam to be mixed is adjustable)
And 3, pumping the salt solution after moisture absorption into a solution regeneration device through a solution pump 7, evaporating the moisture absorbed by the solution by heating the salt solution with low concentration, and pumping the regenerated salt solution with high concentration into a dehumidification device 3 through the solution pump. The evaporated water vapor is stored in the air storage tank, one part of the water vapor is directly discharged to the outside, and the other part of the water vapor is conveyed into the air humidifying chamber 5 through the exhaust pipe, is mixed with the dry air after heat exchange, and adjusts the dry humidity of the indoor air.
As described above, although the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that many modifications are possible without substantially departing from the spirit and scope of the present invention. Therefore, such modifications are also all included in the scope of protection of the present invention.

Claims (1)

1. A heat exchange method of a high-efficiency energy-saving micro-channel heat exchanger device is characterized in that a fan is connected with an air purifier through a pipeline, the other end of the air purifier is connected with a dehumidifying device through a pipeline, the other end of the dehumidifying device is connected with a solution pump through a pipeline, the other end of the solution pump is connected with a solution regenerator through a pipeline, the other end of the solution regenerator is connected with an air humidifying chamber and an outlet through a pipeline, the air humidifying chamber is connected with the outlet, the other end of the dehumidifying device is connected with the micro-channel heat exchanger through a pipeline, and the other end of the micro-channel heat exchanger is connected with; the fan is an axial flow fan; the air purifier consists of a primary filter screen, an electrostatic dust collector and a high-efficiency filter screen; the dehumidifying device consists of a salt solution with moisture absorption characteristic, a solution spraying nozzle and a heat exchange pipe; the micro-channel heat exchanger consists of a micro-channel structure; the air humidifying chamber consists of two air inlets and an air outlet; the solution regenerator consists of a liquid storage device, a heater, a gas collecting tank and a gas distributor, the salt solution after moisture absorption is conveyed into the liquid storage tank, heated by the heater until the absorbed water is evaporated, and the water vapor is stored in the gas collecting tank;
comprises the following steps; comprises the steps of air dry-wet separation, salt solution absorption and regeneration and air purification;
also comprises the following steps; the method comprises an air circulation step, a salt solution circulation step and a steam circulation step, and four process steps of an air purification process, an air dehumidification process, a heat exchange process and a solution regeneration process are completed;
also comprises the following steps;
step 1, conveying outdoor air into an air purifier by a fan, and fully purifying the air in the purifier through three filtering processes of a primary filter screen, an electrostatic dust collector and a high-efficiency filter screen;
step 2, the purified air enters a dehumidifier, the air is directly contacted with a saline solution with moisture absorption property in the dehumidifier, after moisture in the air is absorbed, the air becomes dry, and the saline solution is changed into a dilute solution from a concentrated solution;
step 3, conveying the dehumidified air into the movable micro-channel heat exchanger to exchange heat with a medium in the micro-channel pipe;
step 4, the dry air after heat exchange enters an air humidifying chamber and is mixed with water vapor to realize the adjustment of the air humidity;
step 5, pumping the salt solution after moisture absorption into a solution regeneration device through a solution pump, evaporating moisture absorbed by the solution by heating the salt solution with low concentration, and pumping the regenerated salt solution with high concentration into a dehumidification device through the solution pump; the evaporated water vapor is stored in the air storage tank, one part of water vapor is directly discharged to the outside, and the other part of water vapor is conveyed to the air humidifying chamber through the exhaust pipe, is mixed with the dry air after heat exchange, and adjusts the dryness and humidity of the indoor air.
CN201710442076.3A 2017-06-13 2017-06-13 Efficient and energy-saving micro-channel heat exchanger device and method Active CN107192049B (en)

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CN107192049B true CN107192049B (en) 2020-06-16

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CN110327744B (en) * 2019-07-01 2021-08-13 大连理工大学 Stepped depth dehumidification method utilizing micro-channel rapid diffusion and nanowire adsorption

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487609A (en) * 2008-12-24 2009-07-22 北京航空航天大学 Liquid-dehumidifying multifunctional air source heat pump system and its operation method
CN102914092A (en) * 2011-08-02 2013-02-06 刘康 Microchannel heat exchanger
CN203642340U (en) * 2013-10-18 2014-06-11 合肥铜冠国轩铜材有限公司 Lithium chloride dehumidification device
CN106705300A (en) * 2016-12-30 2017-05-24 南京师范大学 Composite type air conditioning device and conditioning method thereof
CN206222558U (en) * 2016-07-22 2017-06-06 汪若瑜 A kind of novel air regulating system of environmental protection and energy saving

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487609A (en) * 2008-12-24 2009-07-22 北京航空航天大学 Liquid-dehumidifying multifunctional air source heat pump system and its operation method
CN102914092A (en) * 2011-08-02 2013-02-06 刘康 Microchannel heat exchanger
CN203642340U (en) * 2013-10-18 2014-06-11 合肥铜冠国轩铜材有限公司 Lithium chloride dehumidification device
CN206222558U (en) * 2016-07-22 2017-06-06 汪若瑜 A kind of novel air regulating system of environmental protection and energy saving
CN106705300A (en) * 2016-12-30 2017-05-24 南京师范大学 Composite type air conditioning device and conditioning method thereof

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