EP1842024A1 - Humidity- and/or heat-exchange device, for example a plate heat exchanger, sorption rotor, adsorption dehumidifying rotor or the similar - Google Patents

Humidity- and/or heat-exchange device, for example a plate heat exchanger, sorption rotor, adsorption dehumidifying rotor or the similar

Info

Publication number
EP1842024A1
EP1842024A1 EP06706192A EP06706192A EP1842024A1 EP 1842024 A1 EP1842024 A1 EP 1842024A1 EP 06706192 A EP06706192 A EP 06706192A EP 06706192 A EP06706192 A EP 06706192A EP 1842024 A1 EP1842024 A1 EP 1842024A1
Authority
EP
European Patent Office
Prior art keywords
moisture
heat exchange
zeolite
exchange device
coating
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.)
Withdrawn
Application number
EP06706192A
Other languages
German (de)
French (fr)
Inventor
Jürgen Sauer
Thomas Westerdorf
Hans Klingenburg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klingenburg GmbH
Nanoscape AG
Original Assignee
Klingenburg GmbH
Nanoscape AG
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 Klingenburg GmbH, Nanoscape AG filed Critical Klingenburg GmbH
Publication of EP1842024A1 publication Critical patent/EP1842024A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/18—Synthetic zeolitic molecular sieves
    • B01J20/183—Physical conditioning without chemical treatment, e.g. drying, granulating, coating, irradiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • 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
    • B01D53/261—Drying gases or vapours by adsorption
    • 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
    • B01D53/28—Selection of materials for use as drying agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28078—Pore diameter
    • B01J20/2808—Pore diameter being less than 2 nm, i.e. micropores or nanopores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28088—Pore-size distribution
    • B01J20/2809—Monomodal or narrow distribution, uniform pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/304—Linear dimensions, e.g. particle shape, diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/308—Pore size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/31—Pore size distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • 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

Definitions

  • the invention relates to a moisture and / or heat exchange device, for. B. a plate heat exchanger, a sorption rotor, a Adsorptionsentfeuchtungsrotor od. like. with moisture or heat exchange surfaces, by means of which moisture and / or heat can be introduced into a fluid flow and / or fluid flow and / or interchangeable between fluid flows, and a coating, with which the moisture or heat exchange surfaces are coated and which is formed of a zeolite material and a binder.
  • Such moisture and / or heat exchange devices are often used for temperature control and air conditioning of rooms.
  • Such moisture and / or heat exchange devices known from the prior art have the disadvantage that the adsorption process and / or the desorption process, especially when moisture is to be withdrawn from a fluid flow or a fluid flow is to be subjected to moisture. which takes place or take place in the moisture and / or heat exchange device takes too long a period, which per se possible capacity of such moisture and / or heat exchange devices can not be realized. Furthermore, the surfaces of the laminations exposed to the fluid streams often have a roughness which has the consequence that particles contained in the fluid streams are deposited, which leads to a considerable loss of the efficiencies of corresponding devices or frequently comparatively complicated cleaning and maintenance measures requires. In addition, there is often the difficulty of fixing the coating to the material forming the framework or matrix of the moisture and / or heat exchange device.
  • the present invention seeks to provide a moisture and / or heat exchange device, for. B. a plate heat exchanger, a sorption rotor, an adsorption dehumidifying rotor or the like. to create, in which the above-mentioned disadvantages avoided and which can be made with a comparatively low technical and design effort beyond.
  • This object is achieved in that keits- or.
  • Heat exchange surfaces a synthetic nano-zeolite is used, which consists of particles with a particle size ⁇ 1000 nm.
  • the zeolite material forming the coating As a result of this configuration of the zeolite material forming the coating, it is possible to realize a significantly increased adsorption kinetics in comparison to zeolite materials known from the prior art, which has the consequence that the amount of the unit of time per unit of time ad- resp. desorbed water vapor is increased, resulting in an increased moisture transmission results.
  • the nano-zeolite according to the invention as a coating material, an increase in the specific surface area of the same is achieved, wherein, moreover, this nano-zeolite can be readily adhered to various surfaces when suitable binders are used.
  • the nano-zeolite used according to the invention as a coating material has a fast regeneration capability.
  • the zeolite material can be produced with a very uniform particle size distribution.
  • the thickness of the coating can be adapted to a wide variety of requirement profiles.
  • the result of the low particle size of the synthetic nano-zeolite used according to the invention as a zeolite material is that the coating has a very low roughness on its surface exposed to the fluid stream or streams, whereby the correspondingly designed moisture and / or heat exchange device is very resistant to contamination is.
  • the inventively designed coatings can - depending on the selected for the synthetic nano-zeolite more or less uniform particle size - on a high packing density feature .
  • the zeolite material according to the invention for application of the zeolite material according to the invention as a coating on the moisture or heat exchange surfaces, both spin-coating and dip-coating processes can be used. Due to the properties of the nano-zeolite, the coating configured according to the invention with nano-zeolite can be variably designed with regard to its surface chemistry.
  • the plates of plate heat exchangers are provided with the coating according to the invention, it can be achieved that a liquid which is to evaporate on one side of the heat exchanger plate in order to provide cooling energy on the other side of the same heat exchanger plate very uniformly on the Coating having side of the heat exchanger plate is distributed so that on the other side of the same heat exchanger plate over the surface there is a uniform distribution of the cooling energy.
  • This uniform distribution is due to the fact that liquid droplets striking the coating according to the invention are distributed very uniformly over the side of the heat exchanger plate having the coating according to the invention.
  • the inventive moisture and / or heat exchange device of the nano-zeolite is selected so that it has a homogeneous pore size distribution with a pore diameter ⁇ 1, 5 nm, preferably 0, 4 nm.
  • a pore diameter ⁇ 1, 5 nm, preferably 0, 4 nm This can ensure that in the coating such molecules, the u. U. in the long-term operation of the moisture and / or heat exchange device can cause odors, can not be included.
  • water vapor can be speaking designed coating received in an excellent manner or be discharged from this coating.
  • the coating formed from nano-zeolite according to the invention can thus be used as a molecular sieve which is particularly suitable in connection with the operation of moisture and / or heat exchange devices.
  • the thickness of the inventively designed coating 0, 2 to 100, preferably 1 to 2 ⁇ (10 "6 m).
  • a particularly advantageous development of the moisture and / or heat exchange device according to the invention is achieved when a Adsorptionsentfeuchtungsrotor made of a suitable paper material and the moisture or. Heat exchange surfaces forming material matrix of this adsorption dehumidifying rotor is impregnated with a suspension containing the synthetic nano-zeolite.
  • This impregnation can be carried out as long as or to the extent until - after drying - the material matrix of the adsorption dehumidifying rotor consists of at least 30, preferably 40 to 80,% by weight of the nano-zeolite material according to the invention.
  • the coating according to the invention if the material matrix of the moisture and / or heat exchange device of other suitable materials, eg. B. Aluminum foils, ceramic materials od. like. , is trained .
  • a dispersion adhesive for. B. Acrylate SoIe, with an addition of possibly colloidal silicon oxide, can be used.
  • the corresponding binder can also be advantageously used in other materials which form the coating.
  • a moisture and / or heat exchange device embodied as an adsorption dehumidification rotor is provided with the coating according to the invention of a synthetic nano-zeolite having a particle size in the range of 300 nm.
  • a material matrix of the Adsorptionsentfeuchtungsrotors consists of a suitable paper material.
  • the adsorption dehumidifying rotor is impregnated with a suspension containing the nano-zeolite in the desired particle size. After the drying of the adsorption dehumidifying rotor, its final weight is about 50% by weight of the nano-zeolite.
  • the zeolite material used for impregnating the material matrix of the adsorption dehumidifying rotor with particles in nanocrystalline form has a significantly faster adsorption / desorption kinetics.
  • the specific surface area of the novel zeolite according to the invention is larger than in other conventional zeolite zeolites.
  • the crystalline nano-zeolite forming the coating of the adsorption dehumidifying rotor is Visibly its pore size comparatively uniform and so formable that the coating has a uniform pore size with a diameter of, for example, 0, 4 nm.
  • This design of the structure of the coating can ensure that the adsorption dehumidifying rotor is permanently protected against the storage of odor-forming molecules, whereas water vapor molecules can be absorbed and discharged in a simple manner.
  • the refrigerating capacity to be installed for the operation of such an adsorption dehumidifying rotor can be considerably reduced - in particular in tropical climates - up to approx. 50%.
  • Adsorptionsentfeuchtungsrotor described above has a uniformly smooth surface after its coating; so he is not susceptible to any pollution.
  • the coating can be made variable in terms of their surface chemistry. It can be applied by means of spin-coating and dip-coating techniques.
  • the coating Due to the small and uniform particle size, the coating has a very large specific surface area and can be applied to a variety of surfaces.
  • binders used were a colloidal acrylate polymer and colloidal, amorphous sodium ion surface-stabilized silica.
  • Sorptionrotoren whose material matrix of other materials, eg. B. made of aluminum, can be provided with the above-described coating, with similar advantages, as described above in connection with an adsorption dehumidifying rotor with a material matrix of a paper material.
  • the coating at z. B. Insert plate heat exchangers If the coating consisting of the above-described crystalline nano-zeolite is applied to one side of a heat exchanger plate, it can be achieved by this coating that moistening agent used for moistening this side of the heat exchanger plate is distributed more uniformly on this side of the heat exchanger plate, which is based on On the coating incident drops due to the structure of the coating are divided more evenly. As a result, evaporation heat is uniformly demanded on the side of the heat exchanger plate having this coating, which results in a fluid flow which flows past on the other side of the heat exchanger plate being cooled in the desired manner.
  • this application form of the coating can be the same or similar advantages as those in connection with the Adsorptionsentfeuchtungs- and the

Abstract

The invention relates to a humidity- and/or heat-exchange device, for example a plate heat exchanger a sorption rotor, an adsorption dehumidifying rotor or the similar, provided with humidity- and/or heat-exchange surfaces which make it possible to introduce humidity and/or heat into a fluid flow and/or to remove them therefrom and /or to exchange said humidity and/or heat between fluid flows. The inventive device is also provided with a coating, which makes it possible to cover said humidity and heat exchange surfaces and consists of a zeolithe material and a bonding agent. In order to improve the performance of the humidity- and/or heat-exchange device, the zeolithe material is embodied in the form of a synthetic nano-zeolithe consisting of particles whose size is < 1000 nm.

Description

„FeuchtigkeitS- und/oder Wärmeaustauschvorrichtung, z .B . Plattenwärmetauscher, Sorptionsrotor, Adsorptionsentfeuch- tungsrotor od. dgl . ""Moisture and / or heat exchange device, eg. Plate heat exchanger, sorption rotor, adsorption dehumidifying rotor or the like. "
Die Erfindung bezieht sich auf eine Feuchtigkeits- und/oder Wärmeaustauschvorrichtung, z . B . einen Plattenwärmetauscher, einen Sorptionsrotor, einen Adsorptionsentfeuchtungsrotor od . dgl . , mit Feuchtigkeits- bzw. Wärmeaustauschflächen, mittels denen Feuchtigkeit und/oder Wärme in einen Fluidstrom einbringbar und/oder einem Fluidstrom entziehbar und/oder zwischen Fluidströmen austauschbar ist , und einer Beschich- tung, mit der die Feuchtigkeits- bzw. Wärmeaustauschflächen beschichtet sind und die aus einem Zeolith-Material und einem Bindemittel ausgebildet ist .The invention relates to a moisture and / or heat exchange device, for. B. a plate heat exchanger, a sorption rotor, a Adsorptionsentfeuchtungsrotor od. like. with moisture or heat exchange surfaces, by means of which moisture and / or heat can be introduced into a fluid flow and / or fluid flow and / or interchangeable between fluid flows, and a coating, with which the moisture or heat exchange surfaces are coated and which is formed of a zeolite material and a binder.
Derartige Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen werden häufig zur Temperierung und Klimatisierung von Räumen eingesetzt . Darüber hinaus sind auch andere industrielle Einsatzzwecke für derartige Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen vorgesehen .Such moisture and / or heat exchange devices are often used for temperature control and air conditioning of rooms. In addition, there are other industrial ones Intended purposes for such moisture and / or heat exchange devices.
Aus dem Stand der Technik bekannte derartige Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen weisen - insbesondere dann, wenn einem Fluidstrom Feuchtigkeit zu entziehen bzw. ein Fluidstrom mit Feuchtigkeit zu beaufschlagen ist , - den Nachteil auf, dass der Adsorptionsvorgang und/oder der De- sorptionsvorgang, der bzw. die in der Feuchtigkeits- und/oder Wärmeaustauschvorrichtung stattfindet bzw. stattfinden, einen zu großen Zeitraum beansprucht , wodurch an sich mögliche Kapazitäten derartiger Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen nicht realisiert werden können . Des weiteren weisen die den Fluidströmen ausgesetzten Oberflächen der Be- Schichtungen häufig eine Rauhigkeit auf, die zur Folge hat , dass in den Fluidströmen enthaltene Partikel angelagert werden, was zu einer beträchtlichen Einbuße der Wirkungsgrade entsprechender Vorrichtungen führt bzw. häufig vergleichsweise aufwendige Reinigungs- und Wartungsmaßnahmen erfordert . Außerdem besteht häufig die Schwierigkeit , die Beschichtung an dem das Gerüst bzw. die Matrix der Feuchtigkeits- und/oder Wärmeaustauschvorrichtung ausbildenden Werkstoff zu fixieren .Such moisture and / or heat exchange devices known from the prior art have the disadvantage that the adsorption process and / or the desorption process, especially when moisture is to be withdrawn from a fluid flow or a fluid flow is to be subjected to moisture. which takes place or take place in the moisture and / or heat exchange device takes too long a period, which per se possible capacity of such moisture and / or heat exchange devices can not be realized. Furthermore, the surfaces of the laminations exposed to the fluid streams often have a roughness which has the consequence that particles contained in the fluid streams are deposited, which leads to a considerable loss of the efficiencies of corresponding devices or frequently comparatively complicated cleaning and maintenance measures requires. In addition, there is often the difficulty of fixing the coating to the material forming the framework or matrix of the moisture and / or heat exchange device.
Ausgehend von dem eingangs geschilderten Stand der Technik liegt der Erfindung die Aufgabe zugrunde , eine Feuchtigkeits- und/oder Wärmeaustauschvorrichtung, z . B . einen Plattenwärmetauscher, einen Sorptionsrotor, einen Adsorptionsentfeuch- tungsrotor od. dgl . zu schaffen, bei dem die vorstehend erwähnten Nachteile vermieden und der darüber hinaus mit einem vergleichsweise geringen technisch-konstruktiven Aufwand hergestellt werden kann . Diese Aufgabe wird erfindungsgemäß dadurch gelöst , dass als Material für die Ausgestaltung der Beschichtung der Feuchtig- keits- bzw . Wärmeaustauschflächen ein synthetischer Nano- Zeolith eingesetzt wird, der aus Partikeln mit einer Parti- kelgrδße < 1000 nm besteht . Durch diese Ausgestaltung des die Beschichtung ausbildenden Zeolith-Materials lässt sich eine im Vergleich zu aus dem Stand der Technik bekannten Zeolith- Materialien erheblich erhöhte Adsorptionskinetik realisieren, die zur Folge hat , dass die Menge des j e Zeiteinheit ad- bzw . desorbierten Wasserdampfes erhöht ist , woraus eine erhöhte Feuchteübertragung resultiert . Durch den Einsatz des erfindungsgemäßen Nano-Zeoliths als Beschichtungsmaterial wird eine Vergrößerung der spezifischen Oberfläche desselben erreicht , wobei darüber hinaus dieser Nano-Zeolith bei Einsatz entsprechend geeigneter Bindemittel auf vielfältigen Oberflächen gut haftbar ist . Der erfindungsgemäß als Beschichtungsmaterial eingesetzte Nano-Zeolith verfügt über eine schnelle Regenerationsfähigkeit . Als synthetischer Nano-Zeolith ist das Zeolith-Material mit einer sehr gleichmäßigen Partikel - größenverteilung herstellbar . Je nach Auswahl der für das Beschichtungsmaterial vorgesehenen Partikelgrößenverteilung kann die Dicke der Beschichtung an unterschiedlichste Anforderungsprofile angepasst werden . Die niedrige Partikelgröße des erfindungsgemäß als Zeolith-Material eingesetzten synthe- tischen Nano-Zeoliths hat zur Folge , dass die Beschichtung an ihrer dem bzw. den Fluidströmen ausgesetzten Oberfläche eine sehr geringe Rauhigkeit aufweist , wodurch die entsprechend ausgestaltete Feuchtigkeits- und/oder Wärmeaustauschvorrichtung sehr verschmutzungsresistent ist . Die erfindungsgemäß ausgestalteten Beschichtungen können - j e nach der für den synthetischen Nano-Zeolith ausgewählten mehr oder weniger gleichmäßigen Partikelgröße - über eine hohe Packungsdichte verfügen . Zur Aufbringung des erfindungsgemäßen Zeolith- Materials als Beschichtung auf die Feuchtigkeits- bzw. Wärmeaustauschflächen können sowohl Spin-Coating- als auch Dip- Coating-Verfahren eingesetzt werden. Die erfindungsgemäß mit Nano-Zeolith ausgestaltete Beschichtung ist aufgrund der Eigenschaften des Nano-Zeoliths hinsichtlich ihrer Oberflächenchemie variabel gestaltbar .Based on the above-described prior art, the present invention seeks to provide a moisture and / or heat exchange device, for. B. a plate heat exchanger, a sorption rotor, an adsorption dehumidifying rotor or the like. to create, in which the above-mentioned disadvantages avoided and which can be made with a comparatively low technical and design effort beyond. This object is achieved in that keits- or. Heat exchange surfaces a synthetic nano-zeolite is used, which consists of particles with a particle size <1000 nm. As a result of this configuration of the zeolite material forming the coating, it is possible to realize a significantly increased adsorption kinetics in comparison to zeolite materials known from the prior art, which has the consequence that the amount of the unit of time per unit of time ad- resp. desorbed water vapor is increased, resulting in an increased moisture transmission results. By using the nano-zeolite according to the invention as a coating material, an increase in the specific surface area of the same is achieved, wherein, moreover, this nano-zeolite can be readily adhered to various surfaces when suitable binders are used. The nano-zeolite used according to the invention as a coating material has a fast regeneration capability. As a synthetic nano-zeolite, the zeolite material can be produced with a very uniform particle size distribution. Depending on the selection of the particle size distribution provided for the coating material, the thickness of the coating can be adapted to a wide variety of requirement profiles. The result of the low particle size of the synthetic nano-zeolite used according to the invention as a zeolite material is that the coating has a very low roughness on its surface exposed to the fluid stream or streams, whereby the correspondingly designed moisture and / or heat exchange device is very resistant to contamination is. The inventively designed coatings can - depending on the selected for the synthetic nano-zeolite more or less uniform particle size - on a high packing density feature . For application of the zeolite material according to the invention as a coating on the moisture or heat exchange surfaces, both spin-coating and dip-coating processes can be used. Due to the properties of the nano-zeolite, the coating configured according to the invention with nano-zeolite can be variably designed with regard to its surface chemistry.
Sofern die Platten von Plattenwärmetauschern mit der erfin- dungsgemäßen Beschichtung versehen werden, ist erreichbar, dass eine Flüssigkeit , die auf der einen Seite der Wärmetauscherplatte verdunsten soll , um auf der anderen Seite dersel ben Wärmetauscherplatte Kühlenergie zur Verfügung zu stellen, sehr gleichmäßig auf der die Beschichtung aufweisenden Seite der Wärmetauscherplatte verteilt wird, so dass auf der anderen Seite derselben Wärmetauscherplatte über deren Fläche eine gleichmäßige Verteilung der Kühlenergie vorliegt . Diese gleichmäßige Verteilung geht darauf zurück, dass durch die erfindungsgemäße Beschichtung auftreffende Flüssigkeitstrop- fen sehr gleichmäßig über die die erfindungsgemäße Beschichtung aufweisende Seite der Wärmetauscherplatte verteilt werden .If the plates of plate heat exchangers are provided with the coating according to the invention, it can be achieved that a liquid which is to evaporate on one side of the heat exchanger plate in order to provide cooling energy on the other side of the same heat exchanger plate very uniformly on the Coating having side of the heat exchanger plate is distributed so that on the other side of the same heat exchanger plate over the surface there is a uniform distribution of the cooling energy. This uniform distribution is due to the fact that liquid droplets striking the coating according to the invention are distributed very uniformly over the side of the heat exchanger plate having the coating according to the invention.
Gemäß einer vorteilhaften Ausführungsform der erfindungsgemä- ßen Feuchtigkeits- und/oder Wärmeaustauschvorrichtung ist der Nano-Zeolith so gewählt , dass er eine homogene Porengrößen- verteilung mit einem Porendurchmesser < 1 , 5 nm, vorzugsweise 0 , 4 nm, besitzt . Hierdurch kann sichergestellt werden, dass in der Beschichtung solche Moleküle, die u . U. im langfristi- gen Betrieb der Feuchtigkeits- und/oder Wärmeaustauschvorrichtung zu Geruchsbelästigungen führen können, nicht aufgenommen werden können. Dahingegen kann Wasserdampf in der ent- sprechend gestalteten Beschichtung in hervorragender Weise aufgenommen bzw. von dieser Beschichtung abgegeben werden . In dieser Ausgestaltung ist die erfindungsgemäß aus Nano-Zeolith ausgebildete Beschichtung somit als im Zusammenhang mit dem Betrieb von Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen besonders geeignetes Molekularsieb einsetzbar .According to an advantageous embodiment of the inventive moisture and / or heat exchange device of the nano-zeolite is selected so that it has a homogeneous pore size distribution with a pore diameter <1, 5 nm, preferably 0, 4 nm. This can ensure that in the coating such molecules, the u. U. in the long-term operation of the moisture and / or heat exchange device can cause odors, can not be included. On the other hand, water vapor can be speaking designed coating received in an excellent manner or be discharged from this coating. In this embodiment, the coating formed from nano-zeolite according to the invention can thus be used as a molecular sieve which is particularly suitable in connection with the operation of moisture and / or heat exchange devices.
Für den Betrieb entsprechend ausgebildeter Feuchtigkeits- und/oder Wärmeaustauschvorrichtungen ist es zweckmäßig, wenn die Dicke der erfindungsgemäß ausgestalteten Beschichtung 0 , 2 bis 100 , vorzugsweise 1 bis 2 μ (10"6m) aufweist .For the operation of appropriately trained moisture and / or heat exchange devices, it is expedient if the thickness of the inventively designed coating 0, 2 to 100, preferably 1 to 2 μ (10 "6 m).
Eine besonders vorteilhafte Weiterbildung der erfindungsgemäßen Feuchtigkeits- und/oder Wärmeaustauschvorrichtung wird erreicht , wenn ein Adsorptionsentfeuchtungsrotor aus einem dafür geeigneten Papierwerkstoff hergestellt und die die Feuchtigkeits- bzw . Wärmeaustauschflächen bildende Werkstoffmatrix dieses Adsorptionsentfeuchtungsrotors mit einer den synthetischen Nano-Zeolith enthaltenden Suspension getränkt wird .A particularly advantageous development of the moisture and / or heat exchange device according to the invention is achieved when a Adsorptionsentfeuchtungsrotor made of a suitable paper material and the moisture or. Heat exchange surfaces forming material matrix of this adsorption dehumidifying rotor is impregnated with a suspension containing the synthetic nano-zeolite.
Diese Tränkung kann solange bzw. in dem Ausmaß durchgeführt werden, bis - nach der Trocknung - die Werkstoffmatrix des Adsorptionsentfeuchtungsrotors zu zumindest 30 , vorzugsweise 40 bis 80 Gew. -% aus dem erfindungsgemäßen Nano-Zeolith- Material besteht .This impregnation can be carried out as long as or to the extent until - after drying - the material matrix of the adsorption dehumidifying rotor consists of at least 30, preferably 40 to 80,% by weight of the nano-zeolite material according to the invention.
Selbstverständlich ist es auch möglich, die erfindungsgemäße Beschichtung einzusetzen, wenn die Werkstoffmatrix der Feuch- tigkeits- und/oder Wärmeaustauschvorrichtung aus anderen geeigneten Werkstoffen, z . B . Aluminiumfolien, keramischen Werkstoffen od . dgl . , ausgebildet ist . Als Bindemittel kann ein Dispersionsklebstoff , z . B . Acrylat- SoIe, mit einem Zusatz aus eventuell kolloidalem Siliciumo- xid, eingesetzt werden . Das entsprechende Bindemittel ist auch bei anderen die Beschichtung ausbildenden Materialien vorteilhaft einsetzbar .Of course, it is also possible to use the coating according to the invention if the material matrix of the moisture and / or heat exchange device of other suitable materials, eg. B. Aluminum foils, ceramic materials od. like. , is trained . As a binder, a dispersion adhesive, for. B. Acrylate SoIe, with an addition of possibly colloidal silicon oxide, can be used. The corresponding binder can also be advantageously used in other materials which form the coating.
Im folgenden wird die Erfindung anhand von Ausführungsformen näher beschrieben .In the following the invention will be described in more detail by means of embodiments.
Bei einem ersten Ausführungsbeispiel wird eine als Adsorpti- onsentfeuchtungsrotor ausgebildete Feuchtigkeits- und/oder Wärmeaustauschvorrichtung mit der erfindungsgemäßen Beschichtung aus einem synthetischen Nano-Zeolith mit einer Partikel- große im Bereich von 300 nm versehen. Eine Werkstoffmatrix des Adsorptionsentfeuchtungsrotors besteht aus einem geeigneten Papierwerkstoff . Zum Einbringen des Nano-Zeoliths in die Werkstoffmatrix des Adsorptionsentfeuchtungsrotors wird der Adsorptionsentfeuchtungsrotor mit einer Suspension getränkt , die den Nano-Zeolith in der gewünschten Partikelgröße enthält . Nach der Trocknung des Adsorptionsentfeuchtungsrotors besteht dessen Endgewicht zu etwa 50 Gew. -% aus dem Nano- Zeolith.In a first exemplary embodiment, a moisture and / or heat exchange device embodied as an adsorption dehumidification rotor is provided with the coating according to the invention of a synthetic nano-zeolite having a particle size in the range of 300 nm. A material matrix of the Adsorptionsentfeuchtungsrotors consists of a suitable paper material. To introduce the nano-zeolite into the material matrix of the adsorption dehumidifying rotor, the adsorption dehumidifying rotor is impregnated with a suspension containing the nano-zeolite in the desired particle size. After the drying of the adsorption dehumidifying rotor, its final weight is about 50% by weight of the nano-zeolite.
Gegenüber herkömmlichen Zeolith-Werkstoffen hat das zur Tränkung der Werkstoffmatrix des Adsorptionsentfeuchtungsrotors verwendete Zeolith-Material mit Partikeln in nanokristalliner Form eine erheblich schnellere Adsorptions-/Desorptions~ kinetik . Die spezifische Oberfläche des erfindungsgemäßen Na- no-Zeoliths ist größer als bei anderen herkömmlichen Zeolith-Compared with conventional zeolite materials, the zeolite material used for impregnating the material matrix of the adsorption dehumidifying rotor with particles in nanocrystalline form has a significantly faster adsorption / desorption kinetics. The specific surface area of the novel zeolite according to the invention is larger than in other conventional zeolite zeolites.
Werkstoffen. Der die Beschichtung des Adsorptionsentfeuchtungsrotors ausbildende kristalline Nano-Zeolith ist hin- sichtlich seiner Porengröße vergleichsweise gleichmäßig und so gestaltbar, dass die Beschichtung eine gleichmäßige Porengröße mit einem Durchmesser von beispielsweise 0 , 4 nm aufweist . Durch diese Gestaltung der Struktur der Beschichtung kann sichergestellt werden, dass der Adsorptionsentfeuch- tungsrotor auf Dauer dagegen geschützt ist , geruchsbildende Moleküle zu speichern, wohingegen Wasserdampfmoleküle in einfacher Weise aufgenommen und abgegeben werden können.Materials. The crystalline nano-zeolite forming the coating of the adsorption dehumidifying rotor is Visibly its pore size comparatively uniform and so formable that the coating has a uniform pore size with a diameter of, for example, 0, 4 nm. This design of the structure of the coating can ensure that the adsorption dehumidifying rotor is permanently protected against the storage of odor-forming molecules, whereas water vapor molecules can be absorbed and discharged in a simple manner.
Aufgrund der schnellen Adsorptions-/Desorptionskinetik kann die für den Betrieb eines derartigen Adsorptionsentfeuch- tungsrotors zu installierende Kälteleistung - insbesondere in tropischen Klimata - erheblich reduziert werden, und zwar bis zu ca . 50 % .Due to the rapid adsorption / desorption kinetics, the refrigerating capacity to be installed for the operation of such an adsorption dehumidifying rotor can be considerably reduced - in particular in tropical climates - up to approx. 50%.
Der vorstehend geschilderte Adsorptionsentfeuchtungsrotor hat nach seiner Beschichtung eine gleichmäßig glatte Oberfläche ; damit ist er für etwaige Verschmutzung wenig anfällig .The Adsorptionsentfeuchtungsrotor described above has a uniformly smooth surface after its coating; so he is not susceptible to any pollution.
Die Beschichtung kann hinsichtlich ihrer Oberflächenchemie variabel gestaltet werden . Sie kann mittels Spin-Coating- und Dip-Coating-Techniken aufgebracht werden.The coating can be made variable in terms of their surface chemistry. It can be applied by means of spin-coating and dip-coating techniques.
Die Beschichtung hat aufgrund der geringen und gleichmäßigen Partikelgröße eine sehr große spezifische Oberfläche und sie kann auf vielfältigen Oberflächen aufgebracht werden .Due to the small and uniform particle size, the coating has a very large specific surface area and can be applied to a variety of surfaces.
Als Bindemittel wurde ein kolloidales Acrylat-Polymer und kolloidales , amorphes , mit Natriumionen oberflächen- stabilisiertes Siliciumoxid eingesetzt . Auch Sorptionsrotoren, deren Werkstoffmatrix aus anderen Werkstoffen, z . B . aus Aluminium, besteht , können mit der vorstehend geschilderten Beschichtung versehen werden, wobei sich ähnliche Vorteile ergeben, wie vorstehend im Zusammen- hang mit einem Adsorptionsentfeuchtungsrotor mit einer Werk- stoffmatrix aus einem Papierwerkstoff geschildert .The binders used were a colloidal acrylate polymer and colloidal, amorphous sodium ion surface-stabilized silica. Also Sorptionrotoren whose material matrix of other materials, eg. B. made of aluminum, can be provided with the above-described coating, with similar advantages, as described above in connection with an adsorption dehumidifying rotor with a material matrix of a paper material.
Aufgrund der kleinen Partikelgröße ergibt sich für die Beschichtung eine relativ hohe Packungsdichte und damit können die Schichtdicken vergleichsweise gering sein . Bei dem vorstehend geschilderten Ausführungsbeispiel ist eine Schichtdicke von ca . 1 bis 2 μ (10"6m) ausreichend .Due to the small particle size results for the coating a relatively high packing density and thus the layer thicknesses can be comparatively low. In the embodiment described above, a layer thickness of approx. 1 to 2 μ (10 "6 m) is sufficient.
Des weiteren ist es möglich, die Beschichtung bei z . B . Plat- tenwärmetauschern einzusetzen. Wenn die aus dem vorstehend geschilderten kristallinen Nano-Zeolith bestehende Beschichtung auf eine Seite einer Wärmetauscherplatte aufgebracht wird, kann durch diese Beschichtung erreicht werden, dass zur Befeuchtung dieser Seite der Wärmetauscherplatte eingesetztes Befeuchtungsmittel gleichmäßiger an dieser Seite der Wärmetauscherplatte verteilt wird, was darauf beruht , dass auf die Beschichtung auftreffende Tropfen aufgrund der Struktur der Beschichtung gleichmäßiger aufgeteilt werden. Hierdurch wird auf der diese Beschichtung aufweisenden Seite der Wärmetau- scherplatte gleichmäßig Verdunstungswärme abgefordert , was darin resultiert , dass ein Fluidstrom, der an der anderen Seite der Wärmetauscherplatte vorbeiströmt , in gewünschter Weise gekühlt wird. Auch bei dieser Anwendungsform der Beschichtung lassen sich gleiche bzw. ähnliche Vorteile wie die im Zusammenhang mit dem Adsorptionsentfeuchtungs- und demFurthermore, it is possible, the coating at z. B. Insert plate heat exchangers. If the coating consisting of the above-described crystalline nano-zeolite is applied to one side of a heat exchanger plate, it can be achieved by this coating that moistening agent used for moistening this side of the heat exchanger plate is distributed more uniformly on this side of the heat exchanger plate, which is based on On the coating incident drops due to the structure of the coating are divided more evenly. As a result, evaporation heat is uniformly demanded on the side of the heat exchanger plate having this coating, which results in a fluid flow which flows past on the other side of the heat exchanger plate being cooled in the desired manner. In this application form of the coating can be the same or similar advantages as those in connection with the Adsorptionsentfeuchtungs- and the
Sorptionsrotor geschilderten erreichen . Sorption rotor described reach.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung, z . B . Plattenwärmetauscher, Sorptionsrotor, Adsorptionsentfeuch- tungsrotor od . dgl . , mit Feuchtigkeits- bzw. Wärmeaustauschflächen, mittels denen Feuchtigkeit und/oder Wärme in einen Fluidstrom einbringbar und/oder einem Fluidstrom entziehbar und/oder zwischen Fluidströmen austauschbar ist , und einer Beschichtung, mit der die Feuchtigkeits- bzw. Wärmeaustausch- flächen beschichtet sind und die aus einem Zeolith-Material und einem Bindemittel ausgebildet ist , dadurch gekennzeichnet , dass das Zeolith-Material als synthetischer Nano-Zeolith mit einer Partikelgröße < 1000 nm ausgebildet ist .1. Moisture and / or heat exchange device, for. B. Plate heat exchanger, sorption rotor, adsorption dehumidification rotor od. like. with moisture or heat exchange surfaces, by means of which moisture and / or heat can be introduced into a fluid flow and / or fluid flow and / or interchangeable between fluid flows, and a coating with which the moisture or heat exchange surfaces are coated and which is formed from a zeolite material and a binder, characterized in that the zeolite material is formed as a synthetic nano-zeolite having a particle size <1000 nm.
2. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung nach Anspruch 1 , bei der der Nano-Zeolith so gewählt ist , dass er eine homogene Porengrößenverteilung mit einem Porendurchmesser < 1 , 5 nm, vorzugsweise 0 , 4 nm, besitzt .2. Moisture and / or heat exchange device according to claim 1, wherein the nano-zeolite is selected so that it has a homogeneous pore size distribution with a pore diameter <1, 5 nm, preferably 0, 4 nm.
3. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung nach Anspruch 1 oder 2 , bei der die Partikel des Zeolith-Materials in nanokristalliner Form vorliegen .3. Moisture and / or heat exchange device according to claim 1 or 2, wherein the particles of the zeolite material are present in nanocrystalline form.
4. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung nach ei- nem der Ansprüche 1 bis 3 , bei der die Dicke der Beschichtung4. Moisture and / or heat exchange device according to one of claims 1 to 3, wherein the thickness of the coating
0 , 2 bis 100 , vorzugsweise 1 bis 2 μ (10"6m) aufweist .0, 2 to 100, preferably 1 to 2 μ (10 "6 m).
5. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 3 , deren Feuchtigkeits- bzw. Wärme- austauschflächen aus Papierwerkstoffen hergestellt und die mit einer den synthetischen Nano-Zeolith enthaltenden Suspension getränkt sind. 5. Moisture and / or heat exchange device according to one of claims 1 to 3, whose moisture or heat exchange surfaces made of paper materials and which are impregnated with a suspension containing the synthetic nano-zeolite.
6. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung nach Anspruch 5 , die nach ihrer Tränkung mit bzw. in der synthetischen Nano-Zeolith enthaltenden Suspension zu zumindest 30 , vorzugsweise 40 bis 80 Gew. -% aus Nano-Zeolith-Material besteht .6. Moisture and / or heat exchange device according to claim 5, which after impregnation with or in the synthetic nano-zeolite-containing suspension to at least 30, preferably 40 to 80 wt -.% Of nano-zeolite material.
7. Feuchtigkeits- und/oder Wärmeaustauschvorrichtung, vorzugsweise nach einem der Ansprüche 1 bis 6 , bei der das Bin- demittel Dispersionsklebstoffe , wie z . B . Acrylat-Sole, denen zusätzlich kolloidales , SiO2 zusetzbar ist , enthält . 7. Moisture and / or heat exchange device, preferably according to one of claims 1 to 6, in which the binder means dispersion adhesives, such. B. Acrylate sols, which in addition colloidal, SiO 2 is zusetzbar contains.
EP06706192A 2005-01-26 2006-01-11 Humidity- and/or heat-exchange device, for example a plate heat exchanger, sorption rotor, adsorption dehumidifying rotor or the similar Withdrawn EP1842024A1 (en)

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DE102005003543A DE102005003543A1 (en) 2005-01-26 2005-01-26 Humidity/heat-exchange device e.g. plate heat exchanger, useful for keeping the area at moderate temperature and for air-conditioning the area, comprises humidity/heat exchange surface
PCT/EP2006/000156 WO2006079448A1 (en) 2005-01-26 2006-01-11 Humidity- and/or heat-exchange device, for example a plate heat exchanger, sorption rotor, adsorption dehumidifying rotor or the similar

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US20080308262A1 (en) 2008-12-18
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UA93497C2 (en) 2011-02-25
CA2595318A1 (en) 2006-08-03

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