CN1605806A - Composite dehumidifying method based on film and its apparatus and application - Google Patents
Composite dehumidifying method based on film and its apparatus and application Download PDFInfo
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- CN1605806A CN1605806A CN 200410052186 CN200410052186A CN1605806A CN 1605806 A CN1605806 A CN 1605806A CN 200410052186 CN200410052186 CN 200410052186 CN 200410052186 A CN200410052186 A CN 200410052186A CN 1605806 A CN1605806 A CN 1605806A
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Abstract
The composite dehumidifying process based on membrane includes the following steps: the heat and humidity exchange between fresh air and indoor exhaust via membrane and the deeply dehumidifying in the second stage dehumidifier. The apparatus for said process consists of membrane exchanger and second stage dehumidifier connected together, and the second stage dehumidifier is turning wheel dehumidifier, compression dehumidifier or liquid absorbing dehumidifier. The present invention can recover afterheat and surplus humidity and moves the second stage dehumidifier to low temperature and low humidity area to lower the dew point of exhausted air, and can save power and realize high efficiency and low dew point dehumidifying. The present invention may be used widely.
Description
Technical field
The present invention relates to compound dehumidifying technology, particularly based on compound dehumanization method and the equipment and the application of film.
Background technology
In recent years, along with Chinese society and expanding economy, people's living standard improves constantly, and the comfortableness of living environment is had higher requirement, and wherein the demand to dehumidifying is more and more stronger; In some special departments, as archives, tobacco, military project, medicine etc., and underground or semi-underground building in etc. occasion according to different purposes, higher dehumidifying requirement is also all arranged.Air conditioning comprises the adjusting of temperature and humidity; wherein dehumidifying is a high energy consumption job; airborne vapour content seldom; only contain tens gram water vapours in the per kilogram air; but because the latent heat of vaporization of water is very high; therefore the energy consumption of dehumidifying will account for 20%～40% of air-conditioning total energy consumption, researchs and develops energy-conservation dehumidifying technology, and the energy and environment protection of the whole society is had great importance.
Present dehumanization method comprises compressor and freeze method, liquid absorption method and runner absorption method, and the energy consumption of this several method is all than higher, and can not reclaim waste heat in the air draft and surplus wet.The patent No. is that 00227043.9 Chinese utility model patent discloses a kind of rotary wheel dehumidifying technology, new wind directly dehumidifies by desiccant wheel, the regeneration blower fan is connected with the outlet of regeneration wind by 1/4 district of regeneration air channel and rotary dehumidifier, regenerative heater is connected with the regeneration zone of rotary dehumidifier assembly by the regeneration air channel, surplus wet can't being utilized of air draft waste heat in this technology caused energy waste.The patent No. is that 97214969.4 Chinese utility model patent discloses a kind of family expenses circulating fluid hygroscopic agent airdryer, it mainly is provided with the moisture absorption grid of vertically being lined up by some high water absorbing fabrics in the moisture absorption chamber, its underpart and top are respectively hopper and moisture absorption spray head, in the enriched chamber, be provided with some electrical heating elements, its underpart and top are respectively equipped with thickener and concentrated spray head, thickener is communicated by return duct with hopper, this dehumidification equipment does not utilize the waste heat in the indoor exhaust wind surplus wet yet, and the energy consumption of these dehumidifying technologies is all than higher.The Chinese utility model patent of the CN2593094Y that on December 17th, 2003 was announced disclosed " the air dewetting cooling device of band recuperation of heat " can be realized the wet continuous recovery of air draft heat, but it adopts the hygroscopic solution mode of circulation continuously, though system complex, but can not reach degree of depth dehumidifying, dehumidifying effect is limited, can not realize low dew point dehumidifying.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of dehumidification rate height is provided, both can realizes the surplus wet recovery of air draft waste heat, can realize the low dew point dehumidifying of new wind again, energy conservation and consumption reduction effects is significantly based on the compound dehumanization method of film.
Another object of the present invention is to provide a kind of compound dehumidification equipment of realizing said method based on film.
It is above-mentioned based on the compound dehumanization method of film and the application of equipment that a further object of the present invention is to provide.
Purpose of the present invention realizes by following proposal: this compound dehumanization method based on film comprises the steps---new wind and indoor exhaust wind are carried out the wet exchange of heat by film, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to the secondary dehydrating unit again and carry out degree of depth dehumidifying; Described secondary dehydrating unit can be rotary dehumidifier, compression freeze drying device or liquid absorption dehumidifying device.
It is described that to carry out the wet exchange of heat by film specifically be to be undertaken by membrane exchanger, described membrane exchanger comprises selective permeation film or composite support liquid film, new distinguished and admirable road, air draft runner, is provided with selective permeation film or composite support liquid film between new distinguished and admirable road and air draft runner.
The relative modes such as comprising following current, adverse current, difference stream or mixed flow that flow of described new wind and indoor exhaust wind.Described following current is meant that new wind and indoor exhaust wind are equidirectional mobile in the film both sides; Described adverse current is meant that new wind and indoor exhaust wind flow at film both sides rightabout; Described poor stream is meant that new wind is relative mobile in the film both sides with indoor exhaust wind, and both flow directions form an angle α (0＜α＜90 °) in the space; Described mixed flow is meant the combination of any dual mode in aforementioned following current, adverse current, the difference stream or three's combination.
Described selective permeation film comprises polymer membrane, organic zeolite membrane, liquid film.Described polymer membrane comprises triacetate cellulose membrane, polyvinyl alcohol film, cellophane membrane, alginic acid film, chitosan film, aromatic polyimide film, polyacrylonitrile film, poly tetrafluoroethylene; Described organic zeolite membrane comprises zeolite molecular sieve film, pellosil; Described liquid film is made of haloid solution or organic hygroscopic solution.
Described composite support liquid film comprises liquid film, porous supporting body, cortex, and liquid film is fixed in the porous supporting body, forms cortex respectively in porous supporting body two sides of having fixed liquid film.
Described rotary dehumidifier comprises that desiccant wheel is (by lithium chloride, silica gel, hygroscopic solids such as calcium chloride are formed), heater, heat exchanger, the regeneration blower fan, motor, belt, new wind blower fan, motor is connected with desiccant wheel by belt (also can be provided with gear outside desiccant wheel, motor is connected with desiccant wheel by gear train and carries out transmission), the renewing zone of described desiccant wheel is advanced, outlet links to each other with regeneration wind with heater respectively by pipeline in outlet, and the dehumidifying district of described desiccant wheel is advanced, outlet links to each other with heat exchanger with new wind blower fan respectively by pipeline.The new wind that is come by membrane exchanger passes through desiccant wheel, carries out degree of depth dehumidifying, and desiccant wheel does not stop rotation, cycle rotation between moisture absorption district and renewing zone under motor and belt or gear driven; Rotate to the renewing zone after the desiccant wheel moisture absorption is saturated, carry out thermal regeneration by hot-air, before heater thermal regeneration air, regeneration air carries out heat exchange with dehumidified air in heat exchanger, finish whole process.
Described compression freeze drying device comprises compressor, condenser, fan, reservoir, expansion valve, evaporimeter, compressor is connected by the condenser of pipeline with two parallel connections, one of them condenser and fan are oppositely arranged, outside air cooling by fans drive, another condenser and evaporimeter are oppositely arranged, and by the dehumidified air cooling that evaporimeter comes, two condensers are connected with reservoir by pipeline, reservoir is connected with expansion valve, and expansion valve is connected with evaporimeter by pipeline.By membrane exchanger come new distinguished and admirable when the evaporimeter, carry out freeze drying; Cold-producing medium under driven compressor, the condenser of two parallel connections of flowing through simultaneously, condensation in condenser enters reservoir, carries out throttling by expansion valve then, enters evaporimeter then, finishes the circulation of cold-producing medium.
Described liquid absorption dehumidifying device comprises absorber, devaporizer, cold reservoir, water cooler, storage tank, water pump, solution heat exchanger, regenerator, hot reservoir, solution pump, described absorber is connected with cold reservoir by pipeline, cold reservoir is connected with solution heat exchanger, and solution heat exchanger is connected on the regenerator simultaneously; Another group import and export of solution heat exchanger is connected with water cooler with solution pump respectively; Regenerator links to each other with hot reservoir, and hot reservoir is connected on the solution pump, and water cooler is connected with absorber simultaneously, and devaporizer is connected with storage tank and water pump.Described liquid desiccant comprises lithium chloride solution, lithium-bromide solution, calcium chloride solution, triethylene glycol solution.By membrane exchanger come new distinguished and admirable through absorber, in absorber, contact with hygroscopic solution, dehumidify.Air after the dehumidifying devaporizer of flowing through, spray cooling reaches after suitable temperature and the humidity for using; After the hygroscopic solution moisture absorption, become weak solution, enter cold reservoir, enter in the regenerator after in solution heat exchanger, heating up then, under the effect of the heat(ing) coil of regenerator, regenerate; Concentrated solution after the regeneration enters hot reservoir, and under solution pump drove, flow through solution heat exchanger and water cooler entered absorber after temperature reduces and go to finish a new circulation again.
Aforementioned compound dehumanization method and device based on film can be applicable to dehumidify fields such as air conditioner refrigerating, food, chemical industry; Air to environment such as domestic air conditioning, central air-conditioning, warehouse, factory building, hospitals dehumidifies.
Action principle of the present invention is: owing to carried out preliminary dehumidifying with embrane method earlier, the humidity of humid air is reduced, the intake air humidity and the temperature of membrane exchanger back secondary dehydrating unit effectively reduce, air handling process on psychrometric chart is moved to the low temperature and low humidity district by hot and humid district, the working region that can make the secondary dehydrating unit is away from the dehumidifying saturation point, can reach degree of depth dehumidifying, and the energy consumption reduction, wet-out property is largely increased.
The relative prior art of the present invention has following advantage and effect: (1) combines surplus wet recovery of air draft waste heat and the dehumidifying of low dew point, both energy savings, realize efficient low dew point dehumidifying again, with respect to existing single dehumidifying technology, its dehumidification rate improves 40%, and the dehumidifying energy consumption reduces by 20%.(2) way of realization is various, is convenient to suit measures to local conditions, in conjunction with the concrete occasion of utilizing; Make full use of the energy of various ways such as heat, electricity, gas, solar energy.(3) applied widely; The present invention can be used in the existing overwhelming majority need dehumidifying occasion, application is wider, can produce good economic benefit, good market prospect.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the compound dehumidification equipment of film.
Fig. 2 is the structural representation of the membrane exchanger in the described equipment of Fig. 1.
Fig. 3 is the schematic diagram of another structure that the present invention is based on the compound dehumidification equipment of film.
Fig. 4 is the schematic diagram of a structure again that the present invention is based on the compound dehumidification equipment of film.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Concrete structure of the present invention as shown in Figure 1, as seen from Figure 1, this compound dehumidification equipment based on film is connected and composed by membrane exchanger 2 and compression freeze drying device, the structure of described membrane exchanger as shown in Figure 2, comprise selective permeation film or composite support liquid film 12, fresh wind tube road 1, exhaust duct 3, selective permeation film or composite support liquid film 12 are set between fresh wind tube road 1 and exhaust duct 3; Described compression freeze drying device comprises compressor 4, condenser 5,10, fan 6,9, reservoir 7, expansion valve 8, evaporimeter 11, compressor 4 is connected with the condenser 5,10 of two parallel connections by pipeline, one of them condenser 5 is oppositely arranged with fan 6, the outside air that is driven by fan 6 cools off, another condenser 10 is oppositely arranged with evaporimeter 11, dehumidified air cooling by evaporimeter 11, two condensers 5,10 are connected with reservoir 7 by pipeline, reservoir 7 is connected with expansion valve 8, and expansion valve 8 is connected with evaporimeter 11 by pipeline.
The compound dehumanization method of being realized by the said equipment based on film is: new wind and indoor exhaust wind are carried out the wet exchange of heat by the film in the membrane exchanger 2 12, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to compression freeze drying device again and carry out degree of depth dehumidifying; By membrane exchanger 2 send here new distinguished and admirable when the evaporimeter 11, air themperature reduces, the water vapour dewfall condensation that wherein contains is also separated out, and carries out freeze drying; Cold-producing medium is under compressor 4 drives, and two condensers 5,10 in parallel of flowing through enter reservoir 7 after the condensation in condenser 5,10, carry out throttling by expansion valve 8 then, enter evaporimeter 11 again, finish the circulation of cold-producing medium.
This compound dehumanization method and equipment based on film can be applicable to occasions such as family, office, hotel.
Another version of the present invention as shown in Figure 3, as seen from Figure 3, this is connected and composed by membrane exchanger 2 and liquid absorption dehumidifying device based on the compound dehumidification equipment of film, the structure of described membrane exchanger 2 is with embodiment 1 (see figure 2); Described liquid absorption dehumidifying device comprises absorber 13, devaporizer 14, cold reservoir 15, water cooler 16, storage tank 17, water pump 18, solution heat exchanger 19, regenerator 20, hot reservoir 21, solution pump 22, described absorber 13 is connected with cold reservoir 15 by pipeline, cold reservoir 15 is connected with solution heat exchanger 19, solution heat exchanger 19 is connected on the regenerator 20 simultaneously, and heat(ing) coil 23 is arranged in the regenerator 20; Another group import and export of solution heat exchanger 19 is connected with water cooler 16 with solution pump 22 respectively; Regenerator 20 links to each other with hot reservoir 21, and hot reservoir 21 is connected on the solution pump 22, and water cooler 16 is connected with absorber 13 simultaneously, and devaporizer 14 is connected with storage tank 17 and water pump 18.Water cooler 16 is provided with cooling water inlet pipe 24 and cooling water outlet pipe 25.Storage tank 17 is provided with filling pipe 27.
The compound dehumanization method of being realized by the said equipment based on film is: new distinguished and admirable by membrane exchanger 2 through absorber 13, in absorber 13, contact with hygroscopic solution, and dehumidify.Air after the dehumidifying devaporizer 14 of flowing through, spray cooling reaches suitable temperature and humidity after dry wind outlet 26 uses for the user; After the hygroscopic solution moisture absorption, become weak solution, enter cold reservoir 15, enter in the regenerator 20 after in solution heat exchanger 19, heating up then, under the effect of the heat(ing) coil 23 of regenerator 20, regenerate; Concentrated solution after the regeneration enters hot reservoir 21, and under solution pump 22 drove, flow through solution heat exchanger 19 and water cooler 16 entered absorber 13 after temperature reduces and go to finish a new circulation again.
This compound dehumanization method and equipment based on film can be applicable to occasions such as warehouse, library, restaurant, industrial department, is fit to large scale system.
A version more of the present invention as shown in Figure 4, as seen from Figure 4, this is connected and composed by membrane exchanger 2 and rotary dehumidifier based on the compound dehumidification equipment of film, the structure of described membrane exchanger 2 is with embodiment 1 (see figure 2); Described rotary dehumidifier comprises desiccant wheel 35 (being made up of hygroscopic solids such as lithium chloride, silica gel, calcium chloride), heater 29, heat exchanger 30, regeneration blower fan 31, motor 33, belt 34, new wind blower fan 36, regeneration wind inlet pipe 32, regeneration wind outlet 28, dry wind outlet 26.Motor 33 is connected with desiccant wheel 35 by belt 34 (also can be provided with gear outside desiccant wheel, motor 33 is connected with desiccant wheel 35 by gear train and carries out transmission), the renewing zone import and export of described desiccant wheel 35 links to each other with regeneration wind outlet 28 with heater 29 respectively by pipeline, and the dehumidifying district import and export of described desiccant wheel 35 links to each other with heat exchanger 30 with new wind blower fan 36 respectively by pipeline.
The compound dehumanization method of being realized by the said equipment based on film is: new wind and indoor exhaust wind are carried out the wet exchange of heat by the film in the membrane exchanger 2 12, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to rotary dehumidifier again and carry out degree of depth dehumidifying; Desiccant wheel 35 does not stop rotation, cycle rotation between moisture absorption district and renewing zone under motor 33 and belt 34 or gear driven; Rotate to the renewing zone after desiccant wheel 35 moisture absorptions are saturated, carry out thermal regeneration by hot-air, before heater 29 thermal regeneration air, regeneration air carries out heat exchange with dehumidified air in heat exchanger 30, finish whole process.
This compound dehumanization method and equipment based on film can be applicable to occasions such as villa, family, restaurant.
Claims (10)
1, a kind of compound dehumanization method based on film is characterized in that comprising the steps: new wind and indoor exhaust wind are carried out the wet exchange of heat by film, carries out degree of depth dehumidifying by the secondary dehydrating unit again.
2, the compound dehumanization method based on film according to claim 1, it is characterized in that: described to carry out the wet exchange of heat by film be to be undertaken by membrane exchanger, described membrane exchanger comprises selective permeation film or composite support liquid film, new distinguished and admirable road, air draft runner, is provided with selective permeation film or composite support liquid film between new distinguished and admirable road and air draft runner.
3, the compound dehumanization method based on film according to claim 2, it is characterized in that: new wind and indoor exhaust wind are carried out the wet exchange of heat by the film in the membrane exchanger, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to compression freeze drying device again and carry out degree of depth dehumidifying, be specially by membrane exchanger send here new distinguished and admirable when the evaporimeter, carry out freeze drying.
4, the compound dehumanization method based on film according to claim 2, it is characterized in that: new wind and indoor exhaust wind are carried out the wet exchange of heat by the film in the membrane exchanger, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to the liquid absorption dehumidifying device again and carry out degree of depth dehumidifying, be specially by membrane exchanger send here new distinguished and admirable through absorber, in absorber, contact with hygroscopic solution, dehumidify.
5, the compound dehumanization method based on film according to claim 2, it is characterized in that: new wind and indoor exhaust wind are carried out the wet exchange of heat by the film in the membrane exchanger, indoor exhaust wind after the exchange is discharged, after the temperature and humidity of new wind reduces, further deliver to rotary dehumidifier again and carry out degree of depth dehumidifying.
6, realize the compound dehumidification equipment based on film of each described method of claim 1～5, it is characterized in that: connected and composed by membrane exchanger and secondary dehydrating unit, described secondary dehydrating unit is rotary dehumidifier, compression freeze drying device or liquid absorption dehumidifying device.
7, compound dehumidification equipment based on film according to claim 6, it is characterized in that: described rotary dehumidifier comprises desiccant wheel, heater, heat exchanger, the regeneration blower fan, motor, belt, new wind blower fan, motor is connected with desiccant wheel by belt, or outside desiccant wheel, be provided with gear, motor is connected with desiccant wheel by gear train, the renewing zone of described desiccant wheel is advanced, outlet links to each other with regeneration wind with heater respectively by pipeline in outlet, and the dehumidifying district of described desiccant wheel is advanced, outlet links to each other with heat exchanger with new wind blower fan respectively by pipeline.
8, the compound dehumidification equipment based on film according to claim 6, it is characterized in that: described compression freeze drying device comprises compressor, condenser, fan, reservoir, expansion valve, evaporimeter, compressor is connected by the condenser of pipeline with two parallel connections, one of them condenser and fan are oppositely arranged, another condenser and evaporimeter are oppositely arranged, two condensers are connected with reservoir by pipeline, and reservoir is connected with expansion valve, and expansion valve is connected with evaporimeter by pipeline.
9, the compound dehumidification equipment based on film according to claim 6, it is characterized in that: described liquid absorption dehumidifying device comprises absorber, devaporizer, cold reservoir, water cooler, storage tank, water pump, solution heat exchanger, regenerator, hot reservoir, solution pump, described absorber is connected with cold reservoir by pipeline, cold reservoir is connected with solution heat exchanger, and solution heat exchanger is connected on the regenerator simultaneously; Another group import and export of solution heat exchanger is connected with water cooler with solution pump respectively; Regenerator links to each other with hot reservoir, and hot reservoir is connected on the solution pump, and water cooler is connected with absorber simultaneously, and devaporizer is connected with storage tank and water pump.Be connected by airduct between absorber and the devaporizer.
10, according to the application of each described compound dehumanization method based on film of claim 1～5, it is characterized in that: be applied to the air of domestic air conditioning, central air-conditioning, warehouse, factory building, hospital environment is dehumidified.
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| CN 200410052186 CN1605806A (en) | 2004-11-15 | 2004-11-15 | Composite dehumidifying method based on film and its apparatus and application |
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| CN 200410052186 CN1605806A (en) | 2004-11-15 | 2004-11-15 | Composite dehumidifying method based on film and its apparatus and application |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340815C (en) * | 2005-07-15 | 2007-10-03 | 华南理工大学 | Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film |
| CN102777994A (en) * | 2012-08-13 | 2012-11-14 | 马军 | Novel rotating wheel adsorption steam compression refrigeration coupling air conditioner |
| CN104976816A (en) * | 2015-07-24 | 2015-10-14 | 东莞理工学院 | Normal-pressure absorber and absorption heat pump system |
| CN106813327A (en) * | 2017-03-31 | 2017-06-09 | 天津华创瑞风空调设备有限公司 | Solution dehumidification unit and the air-conditioner with it |
| CN109186015A (en) * | 2018-08-13 | 2019-01-11 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN109542151A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of ring control equipment and control method |
-
2004
- 2004-11-15 CN CN 200410052186 patent/CN1605806A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340815C (en) * | 2005-07-15 | 2007-10-03 | 华南理工大学 | Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film |
| CN102777994A (en) * | 2012-08-13 | 2012-11-14 | 马军 | Novel rotating wheel adsorption steam compression refrigeration coupling air conditioner |
| CN102777994B (en) * | 2012-08-13 | 2016-08-10 | 马军 | Runner absorption vapor compression cooling couple air-conditioning device |
| CN104976816A (en) * | 2015-07-24 | 2015-10-14 | 东莞理工学院 | Normal-pressure absorber and absorption heat pump system |
| CN104976816B (en) * | 2015-07-24 | 2017-04-19 | 东莞理工学院 | Normal-pressure absorber and absorption heat pump system |
| CN106813327A (en) * | 2017-03-31 | 2017-06-09 | 天津华创瑞风空调设备有限公司 | Solution dehumidification unit and the air-conditioner with it |
| CN109186015A (en) * | 2018-08-13 | 2019-01-11 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN109542151A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of ring control equipment and control method |
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