CN107192048A - A kind of micro-channel heat exchanger draining defrosting system and method - Google Patents

A kind of micro-channel heat exchanger draining defrosting system and method Download PDF

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Publication number
CN107192048A
CN107192048A CN201710441936.1A CN201710441936A CN107192048A CN 107192048 A CN107192048 A CN 107192048A CN 201710441936 A CN201710441936 A CN 201710441936A CN 107192048 A CN107192048 A CN 107192048A
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CN
China
Prior art keywords
air
micro
heat exchanger
salting liquid
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710441936.1A
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Chinese (zh)
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Civil Engineering and Architecture filed Critical Beijing University of Civil Engineering and Architecture
Priority to CN201710441936.1A priority Critical patent/CN107192048A/en
Publication of CN107192048A publication Critical patent/CN107192048A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F24F3/147—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 with both heat and humidity transfer between supplied and exhausted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/26—Drying gases or vapours
    • 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
    • F24F3/1417—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 liquid hygroscopic desiccants
    • 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
    • F24F3/153—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 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Defrosting Systems (AREA)

Abstract

A kind of micro-channel heat exchanger draining defrosting system and method, belongs to air separating dry space from moist space technical field.Blower and pipeline connects salting liquid dehydrating unit, the other end of salting liquid dehydrating unit connects the dilute salting liquid device for storing liquid and micro-channel heat exchanger of concentration by pipeline respectively, the other end of the dilute salting liquid device for storing liquid of concentration connects solution pump by pipeline, the other end of solution pump connects solution regenerator by pipeline, the other end of solution regenerator connects salting liquid dehydrating unit by pipeline, the other end of micro-channel heat exchanger connects air wetting room by pipeline, vapor flows out from the outlet of solution regenerator, air enters blower fan, air after processing is excluded from the outlet of air wetting room.The present invention takes full advantage of the renewable technology of chemical hygroscopic principle and salting liquid, can effectively solve the problems, such as draining, the defrosting of micro-channel heat exchanger as evaporator in actual applications, improves the heat exchange utilization rate and energy-saving efficiency of microchannel.

Description

A kind of micro-channel heat exchanger draining defrosting system and method
Technical field
The present invention relates to a kind of micro-channel heat exchanger draining defrosting system and method, belong to air separating dry space from moist space technology neck Domain.
Background technology
A kind of micro-channel heat exchanger and its micro-channel tubes of application number 01510096331.4, the micro-channel tubes of heat exchanger Body is pipe, and the outer circumferential side of micro-channel tubes has the heat exchange fin integrally formed with body, and the pipe has at least one to supply The microchannel of refrigerant flowing, this application effectively can not defrost in draining.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of micro-channel heat exchanger draining defrosting system and method. Solve micro-channel heat exchanger in refrigerating and air conditioning industry as evaporator when exist draining and defrosting the problem of.
A kind of micro-channel heat exchanger draining removes defrosting system, and blower and pipeline connection salting liquid dehydrating unit, salting liquid is removed The other end of wet device connects the dilute salting liquid device for storing liquid and micro-channel heat exchanger of concentration, the dilute salt of concentration by pipeline respectively The other end of solution device for storing liquid connects solution pump by pipeline, and the other end of solution pump connects solution regenerator by pipeline, The other end of solution regenerator connects salting liquid dehydrating unit by pipeline, and the other end of micro-channel heat exchanger is connected by pipeline Air wetting room, vapor flows out from the outlet of solution regenerator, and air enters blower fan, and the air after processing is from air wetting room Outlet exclude.
Blower fan is axial flow blower.
Dehydrating unit is made up of the salting liquid with moisture-absorption characteristics, solution spraying mouth and heat exchanger tube.
Micro-channel heat exchanger is made up of stock size MCA.
Air wetting room is made up of two air inlets and a gas outlet.
Solution regenerator is made up of reservoir, heater, air collector and gas distributor, and the salting liquid after moisture absorption is conveyed Into fluid reservoir, it is heated by the heaters until the moisture evaporation absorbed, vapor is stored in air collector.
A kind of micro-channel heat exchanger draining Defrost method, contains following steps；Air circulation step, salting liquid circulation step With water steam step, with three processes such as air dewetting process, heat transfer process and solution reclaiming process.
Also contain following steps；
Outdoor air is transported to dehydrating unit by step 1, blower fan, air pass through in dehydrating unit with moisture-absorption characteristics Salting liquid directly contact, after the moisture in air is absorbed, air desiccation, salting liquid is changed into weak solution from concentrated solution；
Salting liquid after step 2, moisture absorption, which is transported in device for storing liquid, temporarily to be stored；
Air after step 3, dehumidifying is exchanged heat by the dynamic micro-channel heat exchanger of conveying with medium in micro-channel tubes；
Dry air air inlet humidifying chamber after step 4, heat exchange, by being mixed with vapor, is realized dry to air The regulation of humidity；
Step 5, by solution pump the salting liquid after moisture absorption is pumped into regenerative device of solution, passes through the salt low to concentration The heating of solution, the moisture evaporation of the absorption of solution is come out, by solution pump by the high salting liquid pump of the concentration after regeneration It is sent in dehydrating unit；The vapor being evaporated is stored in air accumulator, and a part of vapor is directly discharged to outdoor, separately A part of vapor is transported in air wetting room by blast pipe, is mixed with the dry air after heat exchange, in regulation room The humidity of air.
It is an advantage of the invention that micro-channel heat exchanger draining takes full advantage of chemical hygroscopic principle and salt is molten except defrosting system The renewable technology of liquid, can effectively solve the problems, such as draining, the defrosting of micro-channel heat exchanger as evaporator in actual applications, Improve the heat exchange utilization rate and energy-saving efficiency of microchannel.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, can more completely more fully understand the present invention with And the adjoint advantage of many of which is easily learnt, but accompanying drawing described herein is used for providing a further understanding of the present invention, The part of the present invention is constituted, schematic description and description of the invention is used to explain the present invention, do not constituted to this hair Bright improper restriction, such as figure are wherein：
Fig. 1 is structural representation of the invention.
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment
Obviously, those skilled in the art belong to the guarantor of the present invention based on many modifications and variations that spirit of the invention is done Protect scope.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that wording " the bag used in this specification Include " refer to there is the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition one or Other multiple features, integer, step, operation, element, component and/or their group.It should be understood that when title element, component quilt When ' attach ' to another element, component, it, which can be directly connected to other elements, either component or can also have cental element Part or component.Wording "and/or" used herein includes one or more associated any cells for listing item and complete Combine in portion.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art Language and scientific terminology) with the general understanding identical meaning with the those of ordinary skill in art of the present invention.
For ease of the understanding to the embodiment of the present invention, explanation will be further explained below, and each embodiment is not Constitute the restriction to the embodiment of the present invention.
Embodiment 1：As shown in figure 1, a kind of micro-channel heat exchanger draining removes defrosting system, it is molten that blower fan 1 connects salt by pipeline Liquid dehydrating unit 2, the other end of salting liquid dehydrating unit 2 connected respectively by pipeline the dilute salting liquid device for storing liquid 3 of concentration and Micro-channel heat exchanger 4, the other end of the dilute salting liquid device for storing liquid 3 of concentration connects solution pump 7 by pipeline, solution pump 7 it is another One end connects solution regenerator 6 by pipeline, and the other end of solution regenerator 6 connects salting liquid dehydrating unit 2 by pipeline, micro- The other end of channel heat exchanger 4 connects air wetting room 5 by pipeline, and vapor flows out from the outlet of solution regenerator 6, air Into blower fan 1, the air after processing is excluded from the outlet of air wetting room 5.
Embodiment 2：As shown in figure 1, a kind of micro-channel heat exchanger draining removes defrosting system, by blower fan, dehydrating unit, salting liquid Seven part compositions such as device for storing liquid, micro-channel heat exchanger, air wetting room, solution regenerator and solution pump.Blower fan is axle stream Blower fan；Dehydrating unit is made up of the salting liquid with moisture-absorption characteristics, solution spraying mouth and heat exchanger tube, the moisture in humid air with Spray salting liquid is absorbed when fully contacting by concentrated solution, and the concentration of dense saline solution is thinning；Micro-channel heat exchanger is micro- by stock size Channel design is constituted；Air wetting room is made up of two air inlets and a gas outlet；Solution regenerator is by reservoir, heating Device, air collector and gas distributor composition, the salting liquid after moisture absorption are transported in fluid reservoir, are heated by the heaters until absorbing Moisture evaporation, vapor is stored in air collector.
A kind of micro-channel heat exchanger draining Defrost method, contains following steps；
Air circulation step, salting liquid circulation step and water steam step, with air dewetting process, heat transfer process With three processes such as solution reclaiming process.
Also contain following steps；
Outdoor air is transported to dehydrating unit by step 1, blower fan, air pass through in dehydrating unit with moisture-absorption characteristics Salting liquid directly contact, after the moisture in air is absorbed, air desiccation, salting liquid is changed into weak solution from concentrated solution.
Salting liquid after step 2, moisture absorption, which is transported in device for storing liquid, temporarily to be stored.
Air after step 3, dehumidifying is exchanged heat by the dynamic micro-channel heat exchanger of conveying with medium in micro-channel tubes.
Dry air air inlet humidifying chamber after step 4, heat exchange, by being mixed with vapor, is realized dry to air The regulation of humidity.(combined amount of vapor can adjust)
Step 5, by solution pump 7 salting liquid after moisture absorption is pumped into regenerative device of solution, by low to concentration The heating of salting liquid, the moisture evaporation of the absorption of solution is come out, by solution pump by the high salting liquid of the concentration after regeneration It is pumped into dehydrating unit 3.The vapor being evaporated is stored in air accumulator, and a part of vapor is directly discharged to room Outside, another part vapor is transported in air wetting room 5 by blast pipe, is mixed with the dry air after heat exchange, is adjusted Save the humidity of room air.
As described above, being explained to embodiments of the invention, as long as but essentially without this hair of disengaging Bright inventive point and effect can have many deformations, and this will be readily apparent to persons skilled in the art.Therefore, this The variation of sample is also integrally incorporated within protection scope of the present invention.

Claims (8)

1. a kind of micro-channel heat exchanger draining removes defrosting system, it is characterised in that blower and pipeline connects salting liquid dehydrating unit, The other end of salting liquid dehydrating unit connects the dilute salting liquid device for storing liquid and micro-channel heat exchanger of concentration by pipeline respectively, dense The other end of the dilute salting liquid device for storing liquid of degree connects solution pump by pipeline, and the other end of solution pump connects solution by pipeline Regenerator, the other end of solution regenerator connects salting liquid dehydrating unit by pipeline, and the other end of micro-channel heat exchanger passes through Pipeline connection air wetting room, vapor flows out from the outlet of solution regenerator, and air enters blower fan, and the air after processing is from sky The outlet of gas humidifying chamber is excluded.
2. a kind of micro-channel heat exchanger draining according to claim 1 removes defrosting system, it is characterised in that blower fan is axle stream wind Machine.
3. a kind of micro-channel heat exchanger draining according to claim 1 removes defrosting system, it is characterised in that dehydrating unit is by having The salting liquid, solution spraying mouth and heat exchanger tube for having moisture-absorption characteristics are constituted.
4. a kind of micro-channel heat exchanger draining according to claim 1 removes defrosting system, it is characterised in that micro-channel heat exchanger It is made up of stock size MCA.
5. a kind of micro-channel heat exchanger draining according to claim 1 remove defrosting system, it is characterised in that air wetting room by Two air inlets and a gas outlet composition.
6. a kind of micro-channel heat exchanger draining according to claim 1 remove defrosting system, it is characterised in that solution regenerator by Reservoir, heater, air collector and gas distributor composition, the salting liquid after moisture absorption is transported in fluid reservoir, by heater Heating is until the moisture evaporation absorbed, vapor is stored in air collector.
7. a kind of micro-channel heat exchanger draining Defrost method, it is characterised in that contain following steps；Air circulation step, salting liquid Circulation step and water steam step, with three processes such as air dewetting process, heat transfer process and solution reclaiming process.
8. a kind of micro-channel heat exchanger draining according to claim 7 removes defrosting system, it is characterised in that also containing following step Suddenly；
Outdoor air is transported to dehydrating unit by step 1, blower fan, and air passes through and the salt with moisture-absorption characteristics in dehydrating unit Solution is directly contacted, after the moisture in air is absorbed, and air desiccation, salting liquid is changed into weak solution from concentrated solution；
Salting liquid after step 2, moisture absorption, which is transported in device for storing liquid, temporarily to be stored；
Air after step 3, dehumidifying is exchanged heat by the dynamic micro-channel heat exchanger of conveying with medium in micro-channel tubes；
Dry air air inlet humidifying chamber after step 4, heat exchange, by being mixed with vapor, is realized to air humidity Regulation；
Step 5, by solution pump the salting liquid after moisture absorption is pumped into regenerative device of solution, passes through the salting liquid low to concentration Heating, the moisture evaporation of the absorption of solution is come out, the high salting liquid of the concentration after regeneration is pumped into by solution pump In dehydrating unit；The vapor being evaporated is stored in air accumulator, and a part of vapor is directly discharged to outdoor, another portion Divide vapor to be transported to by blast pipe in air wetting room, mixed with the dry air after heat exchange, adjust room air Humidity.
CN201710441936.1A 2017-06-13 2017-06-13 A kind of micro-channel heat exchanger draining defrosting system and method Pending CN107192048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710441936.1A CN107192048A (en) 2017-06-13 2017-06-13 A kind of micro-channel heat exchanger draining defrosting system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710441936.1A CN107192048A (en) 2017-06-13 2017-06-13 A kind of micro-channel heat exchanger draining defrosting system and method

Publications (1)

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CN107192048A true CN107192048A (en) 2017-09-22

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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
CN103900310A (en) * 2014-04-17 2014-07-02 东南大学 Solution desiccant system and method for preventing air source heat pump water heater from frosting
US20150047382A1 (en) * 2013-08-19 2015-02-19 The Trustees Of The Stevens Institute Of Technology Fully regenerative liquid desiccant system for residential applications

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
US20150047382A1 (en) * 2013-08-19 2015-02-19 The Trustees Of The Stevens Institute Of Technology Fully regenerative liquid desiccant system for residential applications
CN203642340U (en) * 2013-10-18 2014-06-11 合肥铜冠国轩铜材有限公司 Lithium chloride dehumidification device
CN103900310A (en) * 2014-04-17 2014-07-02 东南大学 Solution desiccant system and method for preventing air source heat pump water heater from frosting

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Application publication date: 20170922

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