CN105972724A - Dehumidification device and method for three-fluid film - Google Patents
Dehumidification device and method for three-fluid film Download PDFInfo
- Publication number
- CN105972724A CN105972724A CN201610170275.9A CN201610170275A CN105972724A CN 105972724 A CN105972724 A CN 105972724A CN 201610170275 A CN201610170275 A CN 201610170275A CN 105972724 A CN105972724 A CN 105972724A
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- CN
- China
- Prior art keywords
- humid air
- metal pipe
- cold water
- membrane tube
- fluid film
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- 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.)
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Classifications
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
Abstract
The invention provides a coaxial dehumidification device for a three-fluid film. The dehumidification device for the three-fluid film is mainly composed of a film pipe, a metal sleeve and a shell. Three kinds of fluid comprise cold water, humid air and hot water from interior to exterior in sequence. The cold water flows in the film pipe which is on the innermost layer, the humid air flows in an annular channel between the film pipe and the metal sleeve, and the hot water flows in an annular channel between the metal sleeve and the shell. The cold water is used for supplying low water pressure, the vapor partial pressure difference is formed between the cold water and the humid air with high water pressure, and vapor can enter the cold water through film holes under the action of the partial pressure difference of the vapor on the two sides of the film, so that the dehumidification purpose is achieved. The function of the outermost-side hot water of the dehumidification device for the three-fluid film is that the temperature of the humid air in the metal sleeve can be maintained and made to be higher than the dew point temperature all the time so that dew formation can be avoided. Compared with a traditional condensate dehumidification method, a three-fluid film dehumidification method has remarkable advantages in some special fields (such as humidity control of the interior of a cabin of a manned spacecraft).
Description
Technical field
Three fluid films that the present invention relates to a kind of air dewetting being applicable under space flight microgravity environment remove
Wet apparatus and method.
Background technology
At present on manned spacecraft, in cabin, the dehumidifying of air mainly uses the technology of dehumidification by condensation,
It is that the temperature of humid air is down to below dew point temperature, thus is condensed out aqueous water and reaches dehumidifying
Purpose.But but there are some problems, owing to dehumidification by condensation is a humiture in this dehumidifying technology
The process of strong coupling, can make temperature be greatly reduced while humid air dehumidifying, temperature and wet
Degree is difficult to independent control, it sometimes appear that the problem that cannot take into account.And at the bar of spacecraft weightlessness
Under part, the aqueous water being condensed out can not rely on gravity naturally to separate with air, now have to
Arrange gas-liquid separator specially separated by aqueous water and store.This gas-liquid separator can increase system
Weight, the internal structure of its complexity makes troubles to maintenance in the future simultaneously.
The scheme of cold water film dehumidifying is then the feature utilizing the low steam partial pressure in cold water surface, and water steams
Gas can enter cold water through membrane material from humid air under the effect of film both sides water vapor partial pressure differential and reach
Purpose to dehumidifying.On dehumidification principle, the dehumidifying of cold water film directly relies on water vapor partial pressure differential real
Now dehumidify, but also can be along with certain heat transfer while mass transfer, it is therefore necessary to realize heat transfer with
The further decoupling of mass transfer.
Summary of the invention
The invention provides a kind of three fluid film dehydrating units, it is entered by the hot water outside humid air
One step realizes the decoupling of heat and mass transfer, achieves steam with air at gaseous state while dehumidifying
Lower separation, eliminates gas-liquid separator, also is able to the most efficiently dehumidify under below-G conditions, Er Qieshi
Show the recovery completely of steam in closed cabin.Simultaneity factor flow process is simplified, weight and complexity
Degree reduces, system reliability and maintainable raising.
A kind of three fluid film dehydrating units according to an embodiment of the invention utilize cold water surface low
The feature of steam partial pressure, makes water vapour pass through under the effect of film both sides water vapor partial pressure differential
Membrane material, reaches the purpose of dehumidifying, and the hot water in outermost metal tube can ensure that the temperature of humid air
Degree, higher than dew point temperature, prevents humid air from condensing.
In three fluid film dehydrating units according to an embodiment of the invention, cold water is in membrane tube
Flowing, humid air is in the outer reverse flow of membrane tube, and steam and sensible heat in humid air pass through membrane tube wall
Entrance cold water is pulled away, and water capacity reduces, thus reaches the purpose of dehumidifying, and temperature also reduces simultaneously.
It is down to below dew point temperature due to humid air temperature and can produce condensation, outside humid air, therefore have one
Road hot water and humid air co-flow, the heat of hot water is discharged to humid air by stainless steel sleeve tube wall
Sensible heat, maintains humid air temperature more than dew point temperature.
According to an aspect of the invention, it is provided a kind of three fluid film dehydrating units, its feature exists
In including: hot-water module, humid air module, cold water module,
Wherein,
Described cold water module includes membrane tube, and this membrane tube keeps through humid air module and with thin metal pipe
Coaxially,
Humid air module includes thin metal pipe, this thin metal pipe through hot-water module and with crude metal pipe
Coaxially.
According to another aspect of the present invention, it is provided that a kind of three fluid film dehumanization methods, its feature
It is to include:
Hot water is made to flow in crude metal pipe from the first three way cock and at crude metal Bottomhole pressure and pass through
Thin metal pipe tube wall carries out heat exchange with humid air in the pipe of thin metal pipe,
Humid air is made to flow into thin metal pipe from the second three way cock and flow in thin metal pipe and pass through
Cold water generation hot and humid area in the tube wall of membrane tube and membrane tube, wherein cold water in membrane tube with membrane tube it
Outer humid air reverse flow,
Wherein,
Membrane tube passes the humid air module including thin metal pipe, and coaxial with thin metal pipe,
Thin metal pipe passes the hot-water module including crude metal pipe, and coaxial with crude metal pipe,
Membrane tube uses unidirectional poisture-penetrability membrane material to make,
The steam in humid air outside membrane tube is entered by the fenestra on unidirectional poisture-penetrability membrane material
Cold water in membrane tube thus taken away by described cold water,
The partial heat of humid air enters described cold water through described hot and humid area, and described cold water is not
Humid air side can be penetrated into through film.
The beneficial effect comprise that
Rely on the effect of the big temperature difference that the temperature of humid air is down to dew compared to current dehumidification by condensation pattern
Making steam liquefy below some temperature and separate the traditional scheme reaching dehumidifying, three fluid film dehumidifying are main
The water vapor partial pressure differential of film both sides to be relied on causes the cross-film mass transfer of steam, makes steam direct
Separate with air in the gaseous state, it is to avoid extra gas-liquid separation process, simplify to a certain extent
The flow process of dehumidification system, makes the weight reduction of system, and reliability and maintainability improves.It addition,
Three fluid film dehydrating units achieve heat transfer and the decoupling of mass transfer to a certain extent so that temperature and wet
Degree can relatively independent control.
Accompanying drawing explanation
Fig. 1 is the system overall schematic of one embodiment of the present of invention.
Fig. 2 is the hot-water module schematic diagram of one embodiment of the present of invention.
Fig. 3 is the humid air module diagram of one embodiment of the present of invention.
Fig. 4 is the cold water module diagram of one embodiment of the present of invention.
Detailed description of the invention
Technical scheme is illustrated below in conjunction with the accompanying drawings with detailed description of the invention.
As Figure 1-4, include according to a specific embodiment of the present invention: hot-water module A,
Humid air module B, cold water module C, in the example shown in Fig. 1, the membrane tube of cold water module C
(9) it is arranged on thin metal pipe (5) inside of humid air module B and keeps coaxial, membrane tube (9)
And joint seals to keep apart humid air with cold water between (8)；This sealing for example is by filling
The sealing of sealing.The thin metal pipe (5) of humid air module B is arranged on the thick of hot-water module A
Metal tube (1) is internal, and thin metal pipe (5) and crude metal pipe (1) keep coaxial and pass through second
Hot water is kept apart by ferrule fitting (4) with cold water.In a specific embodiment, thin metal pipe
(5) seal to prevent introduced contaminants from entering dress by casting glue between and the second ferrule fitting (4)
Put inside.
As in figure 2 it is shown, according to one embodiment of present invention, hot-water module (A) includes
Crude metal pipe (1), the first ferrule fitting (2), the first three way cock (3), the second ferrule fitting
(4).In an instantiation as shown in Figure 2, crude metal pipe (1) and the first ferrule fitting
(2) by cutting ferrule nut check ferrule fitting between, conflict cutting ferrule, cut pipe and close
Envelope.Between first ferrule fitting (2) and the second ferrule fitting (4) and the first three way cock (3)
All by screw thread compact siro spinning technology.
As it is shown on figure 3, according to a specific embodiment of the present invention, humid air module (B) is wrapped
Include thin metal pipe (5), the 3rd ferrule fitting (6), the second three way cock (7), ordinary couplings (8).
In an instantiation as shown in Figure 3, thin metal pipe (5) and the 3rd ferrule fitting (6)
Between by cutting ferrule nut check ferrule fitting within, conflict cutting ferrule, cut pipe and seal.
Spiral shell is all passed through between 3rd ferrule fitting (6) and ordinary couplings (8) and the second three way cock (7)
Stricture of vagina compact siro spinning technology.
As shown in Figure 4, according to a specific embodiment of the present invention, cold water module (C) includes
Membrane tube (9).In a specific embodiment of the present invention, membrane tube (9) uses pvdf membrane system
Become.
When the three fluid film dehydrating units according to the present invention run, hot water is from the first three way cock (3)
Flow into, flow in crude metal pipe (1) and by thin metal pipe (5) tube wall and humid air in pipe
Carry out heat exchange.Humid air flows into from the second three way cock (7), in thin metal pipe (5)
Flow and pass through the tube wall of membrane tube (9) and the cold water generation hot and humid area in membrane tube (9), cold water
Humid air reverse flow in membrane tube (9) and outside membrane tube (9).
According to the present invention three fluid film dehydrating units rely on water vapor partial pressure differential cause steam across
Membrane mass transfer, it is achieved that steam and air being directly separated in the gaseous state, reaches the purpose of dehumidifying,
And do not condense at dehumidification process, it is to avoid extra gas-liquid separation process, solve space flight
The problem that under below-G conditions, gas-liquid separation is difficult, and the recovery completely of steam in achieving closed cabin.
Below it it is only one of the present invention；Concrete exemplary applications, is not constituted protection scope of the present invention
Any restriction.All employing equivalents or equivalent transformation and the technical scheme that formed, all fall within this
Within the scope of protection of inventors'rights.
Claims (10)
1. a fluid film dehydrating unit, it is characterised in that including:
Hot-water module (A),
Humid air module (B),
Cold water module (C),
Wherein,
Described cold water module (C) includes membrane tube (9), and this membrane tube (9) passes humid air module (B)
And coaxial with thin metal pipe (5),
Humid air module (B) includes thin metal pipe (5), and this thin metal pipe (5) passes hot water mould
Block (A) is the most coaxial with crude metal pipe (1).
Three fluid film dehydrating units the most according to claim 1, it is characterised in that:
Described hot-water module (A) include crude metal pipe (1), the first ferrule fitting (2), first
Three way cock (3), the second ferrule fitting (4),
Described humid air module (B) also include the 3rd ferrule fitting (6), the second three way cock (7),
Ordinary couplings (8).
Three fluid film dehydrating units the most according to claim 2, it is characterised in that described three streams
During the work of body membrane dehumidifier:
Hot water is flowed into by the first three way cock (3), enters thick gold through the second ferrule fitting (4)
Belong to pipe (1),
Hot water is kept apart by the second ferrule fitting (4) with humid air,
Humid air is flowed into by the second three way cock (7), enters thin through the 3rd ferrule fitting (6)
Metal tube (5),
Seal between second three way cock (7) and membrane tube (9), humid air is interior with membrane tube (9)
Cold water keep apart.
4. according to three fluid film dehydrating units described in Claims 2 or 3, it is characterised in that:
Membrane tube (9) uses unidirectional poisture-penetrability membrane material to make,
Steam in the humid air in membrane tube (9) outside is by the fenestra on unidirectional poisture-penetrability membrane material
Entering the cold water in membrane tube (9) thus taken away by described cold water, humid air partial heat is through overheated biography
Lead and enter described cold water with thermal convection current, and described cold water can not penetrate into humid air side through film.
5. according to three fluid film dehydrating units described in Claims 2 or 3, it is characterised in that:
Hot water in crude metal pipe (1) transfers heat to the humid air in thin metal pipe (5),
Thus keep the temperature of described humid air to be in more than dew point temperature.
6. according to three fluid film dehydrating units described in Claims 2 or 3, it is characterised in that:
Between second three way cock (7) and membrane tube (9), the sealing in ordinary couplings (8) is logical
Cross the sealing of casting glue in ordinary couplings (8).
7. a fluid film dehumanization method, it is characterised in that including:
Hot water is made to flow in crude metal pipe (1) and in crude metal pipe (1) from the first three way cock (3)
Interior flowing also carries out heat by humid air in thin metal pipe (5) tube wall pipe with thin metal pipe (5)
Amount exchange,
Humid air is made to flow into thin metal pipe (5) and in thin metal pipe (5) from the second three way cock (7)
Interior flowing by the tube wall of membrane tube (9) and the cold water generation hot and humid area in membrane tube (9), its
Middle cold water humid air reverse flow in membrane tube (9) and outside membrane tube (9),
Wherein,
Membrane tube (9) through including the humid air module (B) of thin metal pipe (5), and with thin metal
Pipe (5) is coaxial,
Thin metal pipe (5) passes the hot-water module (A) including crude metal pipe (1), and golden with thick
Belong to pipe (1) coaxial,
Membrane tube (9) uses unidirectional poisture-penetrability membrane material to make,
Steam in the humid air in membrane tube (9) outside is by the fenestra on unidirectional poisture-penetrability membrane material
Enter the cold water in membrane tube (9) thus taken away by described cold water,
The partial heat of humid air enters described cold water through described hot and humid area, and described cold water is not
Humid air side can be penetrated into through film.
Three fluid film dehumanization methods the most according to claim 7, it is characterised in that:
By casting glue in ordinary couplings (8) between second three way cock (7) and membrane tube (9)
And sealed.
Three fluid film dehumanization methods the most according to claim 7, it is characterised in that:
Hot water in crude metal pipe (1) transfers heat to the humid air in thin metal pipe (5),
Thus keep the temperature of described humid air to be in more than dew point temperature.
Three fluid film dehumanization methods the most according to claim 7, it is characterised in that:
Described hot and humid area includes the heat exchange by conduction of heat and thermal convection current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170275.9A CN105972724A (en) | 2016-03-23 | 2016-03-23 | Dehumidification device and method for three-fluid film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170275.9A CN105972724A (en) | 2016-03-23 | 2016-03-23 | Dehumidification device and method for three-fluid film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105972724A true CN105972724A (en) | 2016-09-28 |
Family
ID=56988778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610170275.9A Pending CN105972724A (en) | 2016-03-23 | 2016-03-23 | Dehumidification device and method for three-fluid film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908419A (en) * | 2019-11-04 | 2020-03-24 | 北京航空航天大学 | Thermoelectric refrigeration and moisture permeable film combined temperature and humidity control system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231968B2 (en) * | 1979-04-14 | 1987-07-11 | Horiba Ltd | |
| US4705543A (en) * | 1986-09-19 | 1987-11-10 | Perma Pure Products, Inc. | Fluid drying tube |
| US4808201A (en) * | 1986-09-19 | 1989-02-28 | Perma Pure Products, Inc. | Connector construction for fluid drying tube |
| CN201540048U (en) * | 2009-08-13 | 2010-08-04 | 上海高桥捷派克石化工程建设有限公司 | Heat transfer device used for fluid heat transfer |
| CN102740952A (en) * | 2010-02-25 | 2012-10-17 | 帕玛普乐有限责任公司 | Membrane gas dryers incorporating rotatable fittings |
| CN102814104A (en) * | 2011-06-08 | 2012-12-12 | 北京航空航天大学 | Novel dehumidifying apparatus on basis of hydrophilic/hydrophobic composite microporous membranes under microgravity |
| CN203123788U (en) * | 2013-01-24 | 2013-08-14 | 上海誉德建筑设计工程有限公司 | Air dehumidification device for dehumidification by adopting tubular hollow fiber yarn films |
| CN104456812A (en) * | 2014-10-15 | 2015-03-25 | 重庆大学 | Heating-pipe-assisted bathing steam humidifying device |
-
2016
- 2016-03-23 CN CN201610170275.9A patent/CN105972724A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231968B2 (en) * | 1979-04-14 | 1987-07-11 | Horiba Ltd | |
| US4705543A (en) * | 1986-09-19 | 1987-11-10 | Perma Pure Products, Inc. | Fluid drying tube |
| US4808201A (en) * | 1986-09-19 | 1989-02-28 | Perma Pure Products, Inc. | Connector construction for fluid drying tube |
| CN201540048U (en) * | 2009-08-13 | 2010-08-04 | 上海高桥捷派克石化工程建设有限公司 | Heat transfer device used for fluid heat transfer |
| CN102740952A (en) * | 2010-02-25 | 2012-10-17 | 帕玛普乐有限责任公司 | Membrane gas dryers incorporating rotatable fittings |
| CN102814104A (en) * | 2011-06-08 | 2012-12-12 | 北京航空航天大学 | Novel dehumidifying apparatus on basis of hydrophilic/hydrophobic composite microporous membranes under microgravity |
| CN203123788U (en) * | 2013-01-24 | 2013-08-14 | 上海誉德建筑设计工程有限公司 | Air dehumidification device for dehumidification by adopting tubular hollow fiber yarn films |
| CN104456812A (en) * | 2014-10-15 | 2015-03-25 | 重庆大学 | Heating-pipe-assisted bathing steam humidifying device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908419A (en) * | 2019-11-04 | 2020-03-24 | 北京航空航天大学 | Thermoelectric refrigeration and moisture permeable film combined temperature and humidity control system |
| CN110908419B (en) * | 2019-11-04 | 2022-03-04 | 北京航空航天大学 | Thermoelectric refrigeration and moisture permeable film combined temperature and humidity control system |
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Application publication date: 20160928 |