EP2531776A1 - Procédé et dispositif pour la déshumidification de l'air ambiant dans le domaine off-shore - Google Patents

Procédé et dispositif pour la déshumidification de l'air ambiant dans le domaine off-shore

Info

Publication number
EP2531776A1
EP2531776A1 EP10706963A EP10706963A EP2531776A1 EP 2531776 A1 EP2531776 A1 EP 2531776A1 EP 10706963 A EP10706963 A EP 10706963A EP 10706963 A EP10706963 A EP 10706963A EP 2531776 A1 EP2531776 A1 EP 2531776A1
Authority
EP
European Patent Office
Prior art keywords
air
flow path
regeneration
heat exchanger
sector
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Withdrawn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
EP10706963A
Other languages
German (de)
English (en)
Inventor
Helmut Buss
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2531776A1 publication Critical patent/EP2531776A1/fr
Withdrawn legal-status Critical Current

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
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/80—Arrangement of components within nacelles or towers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/64—Aeration, ventilation, dehumidification or moisture removal of closed spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F2012/007—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using a by-pass for bypassing the heat-exchanger
    • 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
    • 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
    • F24F2203/1084—Rotary wheel comprising two flow rotor segments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to a method for the treatment of room air according to the preamble of claim 1 and to a device for the treatment of room air according to the preamble of claim 16.
  • An example of technical equipment in humid and salty environments are wind turbines, especially offshore wind turbines, which are exposed to the extreme conditions of the marine environment with permanently high humidity with a high salinity of the air, the humidity of the ambient air almost all year in the range of so-called critical humidity that is, above a relative humidity of 60% and the salt content of the ambient air electrolytic processes significantly enhanced. These conditions represent high risk of corrosion for the wind turbine with all the technical equipment arranged therein.
  • adsorption systems are used in air treatment facilities for dehumidifying process air, in which adsorption rotors, which are also referred to as sorption regenerators or rotary dehumidifiers, serve for dehumidifying an air stream using hygroscopic materials.
  • the adsorption rotors consist of a motor-driven rotor and consist of many thin, axially honeycomb-like air ducts coated with hygroscopic materials such as silica gel, zeolites or lithium chloride.
  • the slowly rotating rotor of the adsorption rotor shown schematically in FIG. 2 passes through at least two sectors, namely a dehumidifying sector 31 and a regeneration sector 32.
  • water vapor is extracted from a process air stream generated by means of a process air fan 21 by removing the water vapor from the hygroscopic material of the process air Adsorption is bound so that the dried by reducing the absolute and relative humidity process air flow with less moisture exits the adsorption and is fed as dry air to a production process or a room.
  • the water vapor taken up by the adsorption rotor is expelled again in the regeneration sector 32 by means of a regeneration air flow generated by a regeneration air fan 22 by sucking regeneration air from the outside and heating it by means of a heater or an air heater 23 to a high temperature of, for example, 100.degree the relatively dry regeneration air is able to absorb the moisture absorbed by the hygroscopic material in the dehumidifying sector and thereby regenerate the hygroscopic material so that it can once again extract water vapor from the moist process air in the permanently rotating process in the dehumidifying sector.
  • the ones with high humidity enriched, very warm regeneration air is discharged from the adsorption rotor as exhaust air to the environment of the room.
  • the size of the sectors roughly corresponds to the air ratio of the process air to the regeneration air of% to%, i. the dehumidifying sector of the adsorption rotor comprises about% and the regeneration sector about% of the circumference of the rotor.
  • the regeneration air stream is energetically highly charged, since the regeneration air heated by means of the air heater is still very warm and very moist. This energy is released unused as exhaust air to the environment of the room.
  • Object of the present invention is to provide a method and a device for the treatment of indoor air of the type mentioned, with high efficiency with minimal effort and low energy costs to eliminate or reduce the salt and moisture content of room air using an adsorption ensure and ensure low maintenance.
  • the regeneration air heat exchanger transmits from the regeneration air, ie from the air flow from the outside air to the exhaust air, which was previously used unused exclusively for the regeneration of the adsorption rotor hygroscopic material, in its own cycle in an indirect way with hermetically separated flow paths a substantial part of him contained heat energy from the exhaust air flow to the outside air flow, so that the outside air flow is so strongly heated by the exhaust air flow in the regeneration air heat exchanger that crystallization of the salt molecules takes place in a first step.
  • the crystallization takes place at humidity values of less than 40% relative humidity, wherein the temperature increase due to the heating in the regeneration air heat exchanger is already so high that moisture values are reached that are less than 30% relative humidity, so that optimum conditions for the Crystallization are created.
  • the Adsorptionsrotor intended for air promotion fans, motors, flaps and electrical and electronic Devices in the room to be air-conditioned in the desalted and dry area far outside of critical and corrosive humidity values, ie in optimal air conditions. It can no longer be done by the deposition of salt crystals before the onset of regeneration air flow into the adsorption crusting and sealing of Adsorptionsrotors so that maintenance and cleaning completely eliminated and thus considerable cost can be saved.
  • An essential advantage of the method according to the invention is above all in the high efficiency, because the regeneration air heat exchanger transmits so much heat energy from the exhaust air flow to the externally supplied outside air stream for preheating the regeneration air, that more than 50% of the heating energy for the heater can be saved and thus the connection value of the heating element can be reduced by more than 50%.
  • major advantage here are the low operating costs, the savings are so high that a amortization of the additional cost of the regeneration air heat exchanger is reached after a short time.
  • the exhaust air for heating and summer operation at medium or high outside air temperatures the supply air for cooling the humid and salty outside air in the regeneration air heat exchanger supplied to the second flow path of the regeneration air heat exchanger.
  • flap systems for controlling the exhaust air and / or supply air flow which are adjusted to the ambient conditions, so that in winter a complete supply of hot process air takes place, while in summer the process air is cooled indirectly via the regeneration air heat exchanger by the outside air ,
  • the supply air is passed through the process air heat exchanger or a bypass or proportionately through the process air heat exchanger and the bypass and thus controlled the heat transfer from the exhaust air to the supply air.
  • the salt content of the exhaust air is reduced prior to delivery to the dehumidifying sector of the Adsorptionsrotors by the exhaust air is passed through a salt separator.
  • the process air is not dehumidified in recirculation mode, but in outdoor air operation in which an outside air stream is discharged after appropriate treatment and treatment as supply air with sufficient pressure in the room and escapes through the leaks in the room.
  • outdoor air operation in which an outside air stream is discharged after appropriate treatment and treatment as supply air with sufficient pressure in the room and escapes through the leaks in the room.
  • the regeneration air Since the regeneration air is brought to very high temperatures of about 100 ° C, the regeneration air supplied to the adsorption rotor contains an extremely low relative humidity. It follows that the salt molecules crystallize and penetrate into the narrow capillary of the rotor material and close it quickly, so that the air flow or air quantity of the regeneration air is impaired.
  • the salt content of the outside air can be reduced prior to delivery to the dehumidifying sector of Adsorptionsrotors and passed to adapt the air treatment to the respective climatic conditions a part of the exhaust air on the regeneration air heat exchanger and discharged directly to the environment of the room or a part of the Supply air is routed past the process air heat exchanger and discharged directly to the room.
  • the mixing ratio of the mixture of outside air and exhaust air conducted via the first flow path of the process air heat exchanger can be controlled or regulated as a function of the wind force in the vicinity of the room or the wind pressure acting on the building.
  • influence can be exerted on the temperature of the supply air and / or exhaust air flow, on the dehumidification capacity and on the level of overpressure in the room and thus the energy consumption can be optimized to reduce the energy costs.
  • the inventive device ensures a high efficiency in the treatment of the room using an adsorption rotor supplied air elimination or at least a significant reduction in the salt and moisture content of indoor air and thus reducing the risk of corrosion and Inoperability of electrical and electronic equipment in the room as well as corrosion of components of the room, and reduces maintenance and thus maintenance costs to a minimum.
  • FIG. 1 Further embodiments and variants of the device according to the invention for the treatment of room air are characterized in that the output of the first flow path of the regeneration air heat exchanger is connected via a salt separator and a heater to the regeneration sector of the Adsorptionsrotors, the exhaust air via an air filter with the input of the dehumidifying sector of Adsorption rotor is connected,
  • a recirculation fan in the flow path of the exhaust air and supply air in front of the entrance of the regeneration sector and an exhaust fan in the flow path of the outside air to the exhaust air between the dehumidifying sector of the Adsorptionsrotors and the regeneration air heat exchanger is arranged, a first flap system with a first supply flap in the flow path of the supply air between the output of the Dehumidification sector of the Adsorptionsrotors and the supply air port of the room, a first exhaust damper in the flow path of the exhaust air between the exit of the regeneration sector of the Adsorptionsrotors and the input of the second flow path of the regeneration air heat exchanger and a first supply air exhaust damper in the flow path of the exhaust air between the output of the dehumidifying sector of the Adsorptionsrotors and the inlet of the second flow path of the regeneration air heat exchanger and a second flap system with a second exhaust air flap in the flow path of the exhaust air between the regeneration sector of the Adsorptionsrotors and the air outlet opening, a
  • This change in the air condition has the significant advantage that all downstream of the regeneration air heat exchanger units such as air heaters, adsorption, fans, louvers and air ducts are in a salt-free air flow and at the same time in the range of relative humidity based on a critical humidity of less than 60 Up to 70% relative humidity is harmless with respect to corrosion.
  • the regeneration air heat exchanger units such as air heaters, adsorption, fans, louvers and air ducts are in a salt-free air flow and at the same time in the range of relative humidity based on a critical humidity of less than 60 Up to 70% relative humidity is harmless with respect to corrosion.
  • the air flow volume of the process air fan and / or the regeneration air fan per unit time control or adjustable in particular steplessly controlled or regulated, thus influencing the temperature of the supply air and / or exhaust air flow, the dehumidifying performance and the height of the Overpressure taken in the room and thus the energy consumption can be optimized to reduce energy costs.
  • the proportions of the outside air and the exhaust air at the over the first flow path of the process air heat exchanger conducted process air flow by means of a flap system can be controlled or regulated.
  • Fig. 3 is a schematic representation of an air treatment device with a
  • Adsorption rotor and regeneration air heat exchanger with a guide of the process air and regeneration air in summer operation
  • a process air fan 21 To generate the process air flow is a process air fan 21 and for generating the regeneration air flow, a regeneration air fan 22.
  • an air filter in particular a coarse filter 62, is provided which is preferably arranged in front of the air inlet of the dehumidifying sector 31 of the adsorption rotor 3.
  • Fig. 7 shows a schematic representation of an air treatment device in which additionally in the flow path of the process air circulated in the process air process air heat exchanger 5 is arranged, which also hermetically separated first and second flow paths 51, 52 and preferably operated in a countercurrent or cross flow method becomes.
  • the exhaust air AbL guided via the first flow path 51 of the process air heat exchanger 5 from the room to be air-conditioned is heated by the supply air ZL guided countercurrently via the second flow path 52 and takes up a substantial part of the heat energy from the supply air ZL, wherein the Exhaust air AbL is heated so strongly that a crystallization of the salt molecules contained in the exhaust AbL takes place.
  • the supply air flow ZL is discharged from the outlet of the second flow path 52 of the process air heat exchanger 5 with overpressure to the room to be conditioned.
  • the room air escapes via the always existing leaks in the room to be air conditioned so that in addition to a correct moisture retention in the room to be air-conditioned, it can be prevented that moisture can penetrate the room to be air-conditioned by diffusion or by wind pressure in an uncontrolled manner.
  • the outside air AL enters the air treatment device at the air inlet opening 14 (state point K) at a relative humidity of 90% at a temperature of 20 ° C. and is fed along the arrow L in the first flow path of the regeneration air heat exchanger 4 until it enters the salt separator 61 (state point M) heated to a temperature of 45.2 ° C at a relative humidity of 21, 8%.
  • the regeneration air in the regeneration sector 32 of the adsorption rotor 3 absorbs moisture and enters the second flow path of the regeneration air heat exchanger 4 at the state point O at a temperature of 48 ° C. and a relative humidity of 48.6%.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Central Air Conditioning (AREA)
  • Drying Of Gases (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour le traitement de l'air ambiant, un secteur de déshumidification (31) d'un rotor d'adsorption (3) étant alimenté en air vicié AbL provenant d'une pièce, en air extérieur AL ou en mélange air vicié-air extérieur et de l'air sec ou séché ZL étant délivré par le secteur de déshumidification (31) dans la pièce (100). De l'air extérieur AL humide et contenant du sel est aspiré en tant qu'air de régénération via une ouverture d'entrée de l'air (14) de l'environnement de la pièce (100) et guidé dans un première voie d'écoulement (41) d'un échangeur thermique (4) de l'air de régénération, présentant des premières et deuxièmes voies d'écoulement (41,42) séparées hermétiquement l'une de l'autre et en communication par échange de chaleur, et absorbe de l'énergie thermique d'un flux d'air rejeté (FL) ou d'un flux d'air alimenté (ZL) qui est guidé dans la deuxième voie d'écoulement (42) de l'échangeur thermique (4) de l'air de régénération. L'humidité absorbée dans le secteur de déshumidification (31) du rotor d'adsorption (3) est absorbée dans un secteur de régénération (32) du rotor d'adsorption (3) et libérée comme air rejeté FL humide via une ouverture d'évacuation de l'air (17) dans l'environnement de la pièce (100).
EP10706963A 2010-02-01 2010-02-04 Procédé et dispositif pour la déshumidification de l'air ambiant dans le domaine off-shore Withdrawn EP2531776A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001438 2010-02-01
PCT/EP2010/051365 WO2011091863A1 (fr) 2010-02-01 2010-02-04 Procédé et dispositif pour la déshumidification de l'air ambiant dans le domaine off-shore

Publications (1)

Publication Number Publication Date
EP2531776A1 true EP2531776A1 (fr) 2012-12-12

Family

ID=42224741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10706963A Withdrawn EP2531776A1 (fr) 2010-02-01 2010-02-04 Procédé et dispositif pour la déshumidification de l'air ambiant dans le domaine off-shore

Country Status (2)

Country Link
EP (1) EP2531776A1 (fr)
WO (1) WO2011091863A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102011110862A1 (de) * 2011-08-17 2013-02-21 Klingenburg Gmbh Kühlvorrichtung für zur Erzeugung eines Zuluftstroms verwendete Außenluft und Verfahren zur Kühlung derselben
DK2568169T4 (da) 2011-09-09 2022-01-10 Siemens Gamesa Renewable Energy Deutschland Gmbh Vindmølle med tårnklimatiseringssystem ved anvendelse af udeluft
EP2639450B1 (fr) * 2012-03-13 2016-05-18 ALSTOM Renewables Technologies Wind B.V. Système de conditionnement d'air pour éolienne et procédé de ventilation et de mise en pression d'une éolienne
DK2669511T3 (en) * 2012-05-31 2016-11-28 Adwen Offshore S L Wind energy system and method for avoiding equipment corrosion due to penetration of humid ambient air
DK2997255T3 (en) * 2013-03-18 2018-12-03 Cotes As Method and device for dehumidifying the interior air in offshore installations
JP6356500B2 (ja) * 2014-06-19 2018-07-11 株式会社日立製作所 風力発電装置
DK201500002U3 (da) * 2015-01-12 2016-04-25 Cotes As Afsalter til offshore-vindmølle
DK3482815T3 (da) * 2017-11-08 2020-08-10 Siemens Gamesa Renewable Energy As Drift af et kølesystem i en vindmøllegenerator
DE102018125323A1 (de) 2018-10-12 2020-04-16 Innogy Se Windkraftanlage
CN112360538A (zh) * 2020-09-30 2021-02-12 同济大学 一种利用风力技术实现隧道无级通风的装置及方法

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US4134743A (en) * 1970-03-31 1979-01-16 Gas Developments Corporation Desiccant apparatus and method
SE516900C2 (sv) * 2000-04-18 2002-03-19 Munters Europ Ab Förfarande och anordning för värme- och fuktutbyte mellan två luftströmmar samt förfarande för styrning av nämnda anordning

Also Published As

Publication number Publication date
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