WO2011009791A2 - Verfahren zur rückgewinnung einer verdampften flüssigkeit aus einem luftstrom und vorrichtung zur durchführung des verfahrens - Google Patents
Verfahren zur rückgewinnung einer verdampften flüssigkeit aus einem luftstrom und vorrichtung zur durchführung des verfahrens Download PDFInfo
- Publication number
- WO2011009791A2 WO2011009791A2 PCT/EP2010/060159 EP2010060159W WO2011009791A2 WO 2011009791 A2 WO2011009791 A2 WO 2011009791A2 EP 2010060159 W EP2010060159 W EP 2010060159W WO 2011009791 A2 WO2011009791 A2 WO 2011009791A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- amount
- sorbent
- liquid
- cooling
- Prior art date
Links
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
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1032—Desiccant wheel
- F24F2203/1036—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1048—Geometric details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/10—Rotary wheel
- F24F2203/1052—Rotary wheel comprising a non-axial air flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
- F28D19/042—Rotors; Assemblies of heat absorbing masses
- F28D19/044—Rotors; Assemblies of heat absorbing masses shaped in sector form, e.g. with baskets
Definitions
- the invention relates to a method for recovering a vaporized liquid from an air stream.
- Absorption refrigerating machines which produce by cooling a refrigerant, a cooling effect, the
- Premises can be used. With the sorption, or the desorption of the refrigerant is usually also connected to a change in the state of matter of the refrigerant, or causes.
- a commonly used refrigerant is for example water, which in the sorption in a suitable
- Sorbent such as silica gel or zeolite is stored.
- the refrigerant can be re-evaporated by heating the sorbent.
- the adsorption or absorption of the refrigerant is favored by low temperature and high pressure.
- sorption refrigerators are either operated at a low working pressure well below normal atmospheric pressure or preferably used in those regions for air conditioning of rooms in which the averaged temperature values are not excessively high, so that the ambient temperature, or outside temperature in the most cases suitable operating conditions for the
- Sorption chillers allows and also only a low cooling capacity for a perceived as pleasant
- Air conditioning of the premises is required.
- Energy should, for example, about environmental energy
- Evaporative cooling are used, which can be accomplished without much equipment.
- Adsorption chiller even at high Ambient temperatures allows.
- evaporative cooling or other cooling processes in which water or other liquid refrigerant vaporizes or evaporates may be used for exclusive or auxiliary cooling in any chillers based, for example, on the use of one or more heat exchangers.
- the water used for cooling and thereby evaporated increases the moisture content in the environment of the surfaces and components to be cooled and is usually removed with the exhaust air.
- the evaporative cooling conditions are usually used for cooling and thereby evaporated.
- the moisture content of the exhaust air is regularly too low to allow a significant condensation and thus a recovery of entrained in the exhaust evaporated liquid without a renewed consuming and energy-intensive cooling of the exhaust air.
- Ambient temperatures of 3O 0 C or more can be recovered without having to be generated with a high energy expenditure, an excessive cooling effect or pressure change to a condensation and recovery of
- This object is achieved in that the vaporized liquid is transferred from a first amount of air into a second amount of air, wherein the second
- Air quantity is smaller than the first air quantity. It is preferably provided that the evaporated liquid is sorbed from a first amount of air in a sorbent and then desorbed again in a second amount of air, wherein the second amount of air is smaller than the first
- Air quantity is. In place of an adsorption, absorption of the liquid and its subsequent
- sorbent any material suitable for containing water or water vapor can be used.
- they may be porous materials with a high surface area to volume ratio.
- Suitable sorbents may also be suitable
- Plastic materials or liquids or gases are used.
- the invention is based on the finding that a suitable increase of the dew point temperature
- the dew point temperature can be increased in a simple manner that for a
- Amount of liquid is used a significantly smaller amount of air than in the sorption of the same amount of liquid from the amount of air dried thereby. If the
- Ambient temperature is, by cooling the second air volume to the ambient temperature, a large proportion of the moisture content of the second air flow to the
- Drinking water can be obtained from the ambient air by the method according to the invention, for example, by condensing out the moisture contained in the ambient air.
- the production of drinking water is carried out by the extraction of ground or surface water or by the desalination of seawater. In dry-hot regions No appreciable groundwater extraction can take place and, due to lack of rainfall, efficient collection and use of surface water is hardly feasible.
- Seawater desalination necessarily requires access to the seaboard, which is not present in many countries and regions.
- extracting drinking water can suck in ambient air, dehumidify it in a sorbent and
- Process air circulation is circulated an air flow, the temperature and absolute humidity in
- Process air circulation can be recorded. Subsequently, the second amount of air is cooled in the process air cycle again, so that the moisture contained therein condensed to a large extent and can be collected as drinking water. In contrast to the previously known methods in which the ambient air is cooled or compressed to cause the moisture contained therein to condense, the moisture is transferred to a second, preconditioned amount of air, which converts a much more efficient condenser of that air quantity
- Air quantity and the second air quantity have a same air pressure.
- This air pressure corresponds essentially to the air pressure of the ambient air or locally
- the second amount of air is less than a limit air amount at a desorption of a predeterminable amount of liquid from the sorbent whose dew point after a recording of the
- Minimum temperature corresponds. In a first step, it can be specified which amount of liquid should be withdrawn from the first quantity of air, which is initially in the
- Sorbent sorbed and then supplied by desorption of the second amount of air.
- the amount of the second amount of air is then conveniently set so that the quantity of liquid supplied after the desorption can largely be recondensed and recovered again by a suitable increase in the dew point temperature of the second air quantity in a subsequent cooling of this second air quantity to the ambient temperature.
- Dew point temperature results from the amount of the second amount of air and the moisture absorbed therein.
- the predetermined dew point temperature is higher than a
- the dew point temperature should be higher than the ambient temperature used to cool the second amount of air, which was heated to 75 ° C. and above for the desorption process.
- the second amount of air is supplied to a heat exchanger, which cools the second amount of air.
- the amount of condensate produced during the cooling of the second quantity of air can be collected and used again, for example for evaporative cooling.
- Evaporative cooling may also be the case
- Air volume is circulated in a closed circuit.
- a loss of water can be largely or completely prevented by the fact that the first amount of air is also circulated in a closed circuit and the
- Evaporative cooling takes place within this cycle. It is also possible and, under certain conditions, appropriate for one or both quantities of air to be kept open and not in a closed circuit.
- the first quantity of air is drawn in from the ambient air.
- the first amount of air is not circulated in a closed circuit to allow cooling of an air-conditioned air drawn in from the environment
- Ambient air to be transferred to the sorbent is provided that the first amount of air is cooled before the moisture contained therein in a
- Sorbent sorbed and then desorbed in a second amount of air again can take place via a heat exchanger or, for example, in a natural manner by flowing through an earth tunnel or the like.
- the moisture transferred to the sorbent is removed by means of a second, suitably
- preconditioned air quantity desorbed from the sorbent wherein preferably the dew point temperature of the second air quantity after the absorption of moisture from the sorbent is significantly above the ambient air.
- the invention also relates to a device for
- the device comprises a container with a plurality of rotatably mounted chambers which are filled with the sorbent and can be flowed through by an air flow.
- a container with rotatably mounted can be traversed by an air flow sorption chambers, an adsorption of a first amount of air in a chamber on one side of the container and at the same time
- the device has a device for air flow guidance, which forms a closed circuit and guides an air flow through at least one chamber of the container and subsequently through a heat exchanger.
- Air flow guide may be a flow channel whose course is adapted to the spatial conditions.
- the device comprises a collecting device for auskondensierende from the second amount of air liquid.
- the container has annularly arranged, rotatably mounted chambers, which are filled with a sorbent and
- the annularly arranged chambers may have inflow and outflow openings arranged in the radial direction
- an air flow guide for the first air quantity can also form a closed circuit and at the same time space a throughflow
- FIG. 1 shows a schematic representation of a device and a method sequence of a refrigerating machine for
- Evaporative cooling is used and the sprayed cooling water is recovered in a second cycle
- Fig. 2 is a schematic representation of a container with rotatably mounted sorption chambers
- Fig. 3 the container shown in Fig. 2 in a reduced and exploded view
- Fig. 4 is a schematic representation of a device and a process sequence for drinking water extraction
- Chiller 1 cools via a first heat exchanger 2 a sucked from the environment and flowing
- Heat exchanger 4 is a preconditioning of
- Supply air flow 3 causes, whereby usually both a cooling and a drying of the supply air flow 3 come into consideration for the preconditioning.
- a cooling process performed in the first heat exchanger 2 the supply air of the supply air stream 3 to the desired
- Supply air temperature cooled The supply air is subsequently fed to the air-conditioned premises 5 and discharged as exhaust air stream 6 again.
- Evaporative cooling 8 are cooled. About the
- Evaporative cooling 8 demineralized cooling water is discharged to the cooling air flow 7, so that it is a
- the chambers 11 are arranged in a ring and connected to each other, so that the chambers 11 form a rotatably mounted chamber ring 12, which is substantially completely filled with the sorbent 10.
- Both within the chamber ring 12 and outside of the chamber ring 12 are circular segment-shaped supply and discharge chambers 13 are arranged concentrically, which are connected to the circuit of the cooling air flow 7.
- Discharge chambers 13 have inflow and
- Cooling air flow 7 which allow the cooling air flow 7 to flow from a feed chamber 13 through the filled with sorbent 10 chambers 11 into the associated discharge chamber 13.
- the Flow direction of the cooling air flow 7 can be arbitrarily specified, so that the cooling air flow 7 flows either from the inside to the outside or from outside to inside through the chambers 11.
- surrounding chambers 13 are depending on the flow direction of the flowing air flow either feed chambers 13 or discharge chambers 13th
- the annular chamber 12 is rotatable between the spatially space
- Sorbent 10 stored moisture done.
- the container 9 may have a cylindrical shape and have an almost any length, so that the amount of flow through
- Sorbent 10 also almost arbitrarily specified and can be adapted to the particular requirements.
- the arrangement and design of the inflow and outflow openings 14 can ensure that during the rotational movement of the chamber ring 12 between the supply and discharge chambers 13 at any time a substantially consistent freer
- FIG. 2 is for illustration by way of example a
- the heated desorption air stream 15 decreases in the
- volume flow of Desorptions Kunststoffstroms 15 is less than the volume flow of the cooling air flow 7. Studies have shown that, for example, a factor 10 between the two volume flows is suitable, it being assumed that regardless of the respective volume flow per unit time sorption of moisture or subsequent desorption of moisture in, or from the sorbent 10 is approximately constant. Due to the lower volume flow of the
- Desorptions Kunststoffstroms 15 takes a correspondingly lower second air quantity of the Desoptions Kunststoffstroms 15, the same amount of liquid, or amount of water vapor, which was previously introduced by a larger first amount of air of the cooling air flow 7 in the sorbent 10.
- the absolute moisture content of the second air quantity is therefore
- Dew point temperature of Desorptions Kunststoffstroms 15 is above ambient temperature.
- the desorption air stream 15 enriched with moisture from the sorbent 10 has to be passed through a heat exchanger 16 and cooled below the dew point temperature in order to condense the moisture contained in the desorption air stream 15 and thus recover the liquid entrained in the desorption air stream 15 enable.
- the separated liquid can be collected and fed back to the evaporative cooling 8.
- Flow generation facilities required energy can be generated by a solar system 17 and the respective
- the chiller 1 can therefore exclusively with water consumption
- Water vapor can be transferred to a second air flow, whose dew point is much higher and an economically sensible separation of the water, or Auskondenstechnik allowed.
- ambient air is sucked by means of a fan 19.
- the ambient air has, for example, a temperature of 45 ° C. and a relative humidity of 15%, so that approximately 9 g / kg of evaporated water are contained in the ambient air.
- the ambient air is first cooled in a cooling device 20, for example to 28 0 C and then passed through the container 9, which contains the sorbent 10 in several chambers 11. A portion of the moisture contained in the ambient air is taken up in the sorbent 10 and stored.
- suitable sorbent of the previously cooled to 28 0 C ambient air about 7.6 g / kg of water can be withdrawn.
- a closed circuit 21 is a
- Process air flow 22 circulated.
- the process air stream 22 is heated via a solar collector assembly 23 to
- the relative humidity of the process air stream 22 increases, for example, to 74%, so that the
- Process air stream 22 has absorbed about 153 g / kg of water. Each kilogram of process air can thus absorb the amount of water that is about 20 kilograms
- Air volume about twenty times the volume of the second
- Air volume is.
- Process air stream 22 passed through a heat exchanger 16 and cooled by the also sucked by means of a fan 19 ambient air 18 at a temperature of 45 0 C, for example, 51 0 C. Initially, the relative humidity increases to 100% and then a proportion of the contained in the process air stream 22 condenses
- exemplary temperature and humidity values are condensed at 51 0 C when cooled, the process air stream 22 about 153 g / kg of water. This amount of water can be removed via an outlet 24 from the process air stream 22 and collected to drinking water or utility water for
- the energy required for the operation of the fans 19 and the heating of the process air stream 22 can be obtained via photovoltaic systems, or solar collector systems 23, so that in dry-hot regions in particular efficient drinking water production from the
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Drying Of Gases (AREA)
- Separation Of Gases By Adsorption (AREA)
- Central Air Conditioning (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10743062A EP2457027A2 (de) | 2009-07-22 | 2010-07-14 | Verfahren zur rückgewinnung einer verdampften flüssigkeit aus einem luftstrom und vorrichtung zur durchführung des verfahrens |
US13/386,060 US8888893B2 (en) | 2009-07-22 | 2010-07-14 | Method for reclaiming an evaporated liquid from an air stream and device for performing the method |
AU2010275353A AU2010275353B2 (en) | 2009-07-22 | 2010-07-14 | Method for reclaiming an evaporated liquid from an air stream and device for performing the method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910026228 DE102009026228A1 (de) | 2009-07-22 | 2009-07-22 | Verfahren zur Rückgewinnung einer verdampften Flüssigkeit aus einem Luftstrom und Vorrichtung zur Durchführung des Verfahrens |
DE102009026228.8 | 2009-07-22 | ||
DE102009044653.2 | 2009-11-25 | ||
DE200910044653 DE102009044653A1 (de) | 2009-11-25 | 2009-11-25 | Verfahren zur Rückgewinnung einer verdampften Flüssigkeit aus einem Luftstrom und Vorrichtung zur Durchführung des Verfahrens |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011009791A2 true WO2011009791A2 (de) | 2011-01-27 |
WO2011009791A3 WO2011009791A3 (de) | 2011-03-17 |
Family
ID=43027684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/060159 WO2011009791A2 (de) | 2009-07-22 | 2010-07-14 | Verfahren zur rückgewinnung einer verdampften flüssigkeit aus einem luftstrom und vorrichtung zur durchführung des verfahrens |
Country Status (4)
Country | Link |
---|---|
US (1) | US8888893B2 (de) |
EP (1) | EP2457027A2 (de) |
AU (1) | AU2010275353B2 (de) |
WO (1) | WO2011009791A2 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020647A1 (de) * | 1979-05-31 | 1980-12-11 | Daikin Ind Ltd | Entfeuchtungs- und desodorierungsvorrichtung |
JPS6042876B2 (ja) * | 1980-08-25 | 1985-09-25 | 松下電器産業株式会社 | 複合熱交換装置 |
DE3371247D1 (en) * | 1982-11-04 | 1987-06-04 | Matsushita Electric Ind Co Ltd | Heat exchanger |
JP4241944B2 (ja) * | 1996-10-30 | 2009-03-18 | パナソニックエコシステムズ株式会社 | 除湿素子および除湿装置 |
JP3948248B2 (ja) * | 2001-10-29 | 2007-07-25 | ダイキン工業株式会社 | 吸着ロータ及びそれを用いた吸着装置 |
JP3874187B2 (ja) * | 2003-01-07 | 2007-01-31 | 東洋紡績株式会社 | 除湿エレメントおよび除湿装置 |
JP2005055049A (ja) * | 2003-08-04 | 2005-03-03 | Seibu Giken Co Ltd | 除湿空調装置 |
JP2005058937A (ja) * | 2003-08-18 | 2005-03-10 | Seibu Giken Co Ltd | 吸着式除湿機 |
-
2010
- 2010-07-14 US US13/386,060 patent/US8888893B2/en not_active Expired - Fee Related
- 2010-07-14 EP EP10743062A patent/EP2457027A2/de not_active Withdrawn
- 2010-07-14 WO PCT/EP2010/060159 patent/WO2011009791A2/de active Application Filing
- 2010-07-14 AU AU2010275353A patent/AU2010275353B2/en not_active Ceased
Non-Patent Citations (1)
Title |
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None |
Also Published As
Publication number | Publication date |
---|---|
EP2457027A2 (de) | 2012-05-30 |
AU2010275353A1 (en) | 2012-01-19 |
US8888893B2 (en) | 2014-11-18 |
AU2010275353B2 (en) | 2016-10-06 |
WO2011009791A3 (de) | 2011-03-17 |
US20120192715A1 (en) | 2012-08-02 |
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