EP2066984A2 - Unité de traitement de l'air, de déshumidification et de réchauffement efficace du point de vue énergétique - Google Patents

Unité de traitement de l'air, de déshumidification et de réchauffement efficace du point de vue énergétique

Info

Publication number
EP2066984A2
EP2066984A2 EP07826572A EP07826572A EP2066984A2 EP 2066984 A2 EP2066984 A2 EP 2066984A2 EP 07826572 A EP07826572 A EP 07826572A EP 07826572 A EP07826572 A EP 07826572A EP 2066984 A2 EP2066984 A2 EP 2066984A2
Authority
EP
European Patent Office
Prior art keywords
air
treatment unit
interior
exterior
insufflation
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Withdrawn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
EP07826572A
Other languages
German (de)
English (en)
Inventor
Paulo Jorge MAGALHÃES PIRES
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.)
Universidade do Porto
Original Assignee
Universidade do Porto
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 Universidade do Porto filed Critical Universidade do Porto
Publication of EP2066984A2 publication Critical patent/EP2066984A2/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Withdrawn legal-status Critical Current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
    • 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
    • F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • F24F12/003—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid using a heat pump
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0071—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater adapted for use in covered swimming pools
    • 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
    • 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]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • 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

Definitions

  • the present invention refers to an Air Treatment Unit with a heat recuperator Air- Air
  • Air Treatment Units are dimensioned to the total or partial removal of the thermic charge of the space.
  • the FR2742216 (BERNIER JACQUES FR) uses the heat recuperator between the evaporator and the heating pump condenser. It uses two heating pumps to solve the problem during the insufflation of 100% fresh air, but still presents with some negative operating aspects.
  • FIG I shows an air treatment unit with interior humidity and temperature control of buildings such as Hospitals, Auditoriums, storage buildings for edible products, and other buildings with humidity control inside (the humidifier (20) may or not be necessary, depending on interior and exterior conditions of the building).
  • buildings such as Hospitals, Auditoriums, storage buildings for edible products, and other buildings with humidity control inside (the humidifier (20) may or not be necessary, depending on interior and exterior conditions of the building).
  • Figure II shows an Air Treatment Unit with humidity and temperature control for a
  • FIG III shows an operating scheme of the developed air treatment unit during the insufflation and heating of 100% fresh air without humidification, and the dehumidi- fication and heating steps of 100% fresh air.
  • the heat exchanger of cool source (12) is inactive, while in the dehu- midification and heating of 100% fresh air this starts its working operation (ex. Covered Pools).
  • the mixer (11) does not allow the fusion of fresh air with the vitiated air present in the installation.
  • FIG IV shows the evolution of the air conditions in the psychometric diagram for an insufflation and heating of 100% fresh air.
  • the heat exchanger of cool source is inactive (ex. Covered Pools).
  • Figure V shows the evolution of air conditions in the psychometric diagram, for a de- humidification and heating of 100% fresh air (ex. Covered Pools).
  • Figure VI shows an operating scheme of the developed air treatment unit during the dehumidification and heating of the mixture of fresh air and vitiated air comprised in the installation (ex. Covered Pools).
  • the deflectors of the mixer (11) alter their position in order to allow the mixture of fresh air and vitiated one.
  • Figure VII shows the evolution of air conditions in the psychometric diagram, for a dehumidifying and heating situation of the mixture of fresh air and vitiated air (ex. Covered Pools).
  • Figure VIII shows the operating scheme of the developed air treatment unit for a cooling of 100% fresh air situation.
  • the heat exchanger of hot source (19) is inactive and there is no mixture between fresh air and vitiated air.
  • Figure IX represents in a psychometric diagram the air evolution during a cooling period of 100% fresh air (ex. Covered Pools).
  • Figure X shows the evolution of air conditions in psychometric diagram, for a situation of mechanical ventilation of 100% fresh air without thermic treatment (ex. Covered Pools).
  • Figure XI shows the operating mode of the developed air treatment unit applied to a covered pool accordingly to internal and external conditions of acclimatized space (I- Insufflation and Heating of 100% fresh air; II- Dehumidification and Heating of 100% fresh air; III- Dehumidification and Heating of the fresh air and vitiated air mixture; IV- Mechanical Ventilation; a- internal temperature of the space; b- absolute humidity for average operating temperature of the heat exchanger of cool source; c- absolute humidity for inner conditions).
  • FIG. XII shows the operating mode of the developed air treatment unit, applied to a common building with humidity and temperature control, accordingly to internal and external conditions of the acclimatized space (I- Insufflation of 100% fresh air and heating/cooling with humidification of the air; II- Insufflation of 100% of fresh air with dehumidification and heating; III- Dehumidification and Heating of the fresh air and vitiated air mixture; a) Insufflation's Absolute Humidity; b- Enthalpy's line for interior conditions; c- Interior Conditions' point of the acclimatized space).
  • the developed ATU comprises the heat recuperator (13) between the two heat exchangers- cold (cold water from the Chiller) and hot (hot water from the boiler) - promoting the thermic energy's exchange between the two air flows (building extraction and insufflation).
  • the heat exchanger of cool source (12) undertakes the task to cool and dehumidify the insufflated air (fresh or vitiated air).
  • the heat exchanger of hot source (19) allows the air heating up to the insufflation's temperature of the space to acclimatize.
  • the mixer (11) allows the mixture of fresh with vitiated air in the installation, whenever convenient, in energetic terms or in interior air quality terms.
  • the ventilators (14 and 21) allow the air circulation inside ventilation conducts of the building and at the developed air treatment unit, overcoming the power loss in the circuit.
  • the heat recuperator (13) allows thermic energy's exchange between the extract air and the insufflation's air of the building. This is placed between the exchangers of hot source (19) and cool source (12), increasing the number of hours of useful work.
  • the acoustic attenuators (15 and 22) decrease the sent out pressure by ventilators in order to avoid its propagation along the installation.
  • the filter on the fresh air inlet (10) has the purpose to retain the solid particles coming from the exterior air improving the air quality and reducing the chances of possible damage of the air treatment unit. In spite of this, another filter at the vitiated air inlet might be privided, removing some solid particles coming from the interior of the space to acclimatize.
  • the anti-vibrating bands or water-pouts (16 and 23) have the task not to propagate of vibrations to air conducts, lodged at the interior of the buildings, avoiding thus some undesirable noises.
  • the registers (17 and 18) are aimed to open/close the fresh air or vitiated air in the developed air treatment unit.
  • the humidificator (20) has the finality of adding water to the insufflation's air, for an increase in humidity's index. This may or not be useful, concerning the interior or exterior conditions of the space to acclimatize, and in such cases the developed ATU is set up as in Figure I. [29] Given the advantages of the developed unit for buildings with humidity control, then unit one is provided with an autonomous control in order to fit in the interior and exterior conditions of the building. This type of control allows the following operation modes:
  • Air Heatin with/without humidification - the ventilation system insufflates the necessary flow rate for the removal of the latent and sensible charge, and guarantees the interior air quality.
  • the heat recuperator (13) will reduce the power consumption on the hot source (19) and the installed potency. Should a 100%-insufflation of fresh air occur and if the absolute humidity is inferior to insufflation values, there is a humidifier (20) that transfers water into the air.
  • the air treatment unit is capable to regulate the absolute insufflation humidity by balancing the ventilation by balancing the ventilation flow rates, comparing the absolute humidity of the interior with the outdoor space, always guaranteeing the interior air quality by means of the mixture of fresh air and vitiated air.
  • Figures III and IV show this operating mode.
  • Dehumidification and Heating of 100% of fresh air - procedure occurs when the absolute humidity of the exterior air is superior to the absolute humidity for air insufflation's conditions. In terms of power energy, the exterior conditions must present enthalpy values inferior to the interior air values.
  • the heat recuperator (13) allows heat exchanges between air flows at the cold source exchanger outlet(12), and of the extract air of the building ( Figure III and V).
  • the ventilation system insufflates the necessary flow rate for the removal of charges (latent and sensible), guaranteeing interior air quality. This occurs when the absolute humidity of insufflation is superior to the absolute humidity of exterior air, being the humidification of the air necessary.
  • the air treatment unit is also capable of regulating the insufflation's absolute humidity by means of balancing the ventilation flow rates, comparing the absolute humidity of the space with the exterior humidity, always guaranteeing interior air quality. In this situation, the heat recuperator (13) doesn't work, making a 'bypass' to this equipment.
  • Figures VIII and IX present the unit's operating mode for this situation.
  • V. Mechanic Ventilation of the space - this situation may or not substitute operating periods in dehumidification and heating of recirculated air in the developed ATU. It can be implemented on Covered Pools in the Summer with high temperatures, transforming them into exterior pools. The advantage is that there is no energy consumption of neither on the hot source (19) nor on the cold source (12). In order to reduce ventilation requirements, there is a 'bypass' for the heat recuperator (13) decreasing the charge loss in the ventilation circuit ( Figures VIII and X). Detailed Description of the Invention
  • the developed Air Treatment Unit has the purpose to treat the building's interior air in terms of temperature and interior humidity.
  • This developed air treatment unit was conceived to reduce these energy consumption due to a heat recuperator established inside the ATU.
  • the materials that constitute the plate heat recuperator as well as the heat exchangers must present good features in terms of thermic conductivity and resistance to deterioration.
  • the most common materials are copper and aluminium alloys, and the application of stainless steel in covered pools due to the existence of chlorine elements in the interior space.
  • the energetically efficient air treatment, dehumidification and heating unit reduces significatively the power consumption by altering the localization of the heat recuperator, and by suitable control that alters its operating mode concerning the interior and exterior of the acclimatized space.
  • the control of the air treatment unit is an important factor in the decrease of power consumption, and so being it should be endowed with temperature and humidity sensors, and a CO 2 sensor at the building's extract air conduct so as to regulate the fresh air flow rate according to the occupation of the space.
  • the ventilation's flow rate is determined by the unit's operating mode, and by the temperature's lecture and humidity's index of interior and exterior conditions of the building.
  • the system's control may be capable of mixing the fresh air with the recirculated air in order to reach the absolute insufflation humidity.
  • the air treatment unit will dehumidificate and heat 100% of fresh air and will bring into action the hot and cold sources (pieces 19 and 12 respectively, of figure I).
  • the exterior air presenting an absolute humidity superior to insufflation conditions, will bring into action the cold source dehumidificationing the fresh air.
  • This fresh air when enters into the heat recuperator (piece 13 of figure I), will exchange thermic energy with the extract air that will cross immediately at the hot source's exchanger. In terms of reducing energy, the heat recuperator helps at the decreasing of heating's energy since point e till point f of figure V.
  • the heat recuperator is reducing the cooling necessities, because instead of cooling the air since point c till point e of figure VII (dehumidification and heating of 100% of fresh air) or since the point of the mixture of fresh air with the extract air till the point of figure VII (dehumidification and heating of the mixture of fresh air with recirculated one), this heat recuperator will cool since point d to point e of figure VII. In spite of all this being described in terms of cooling, the same may occur in case of heating because it's possible to reduce power necessities from point e to point f of figure VII.
  • the developed air treatment unit will insufflate 100% of fresh air bringing into action the heat exchanger of cold source.
  • the exterior air, crossing through the cold source (12) cools (sensible cooling), and immediately does the bypass to the heat recuperator as it is presented in figure IX.
  • this unit can also be installed in other buildings with humidity and interior temperature control.
  • this unit can also be installed in other buildings with humidity and interior temperature control.
  • FIG XII I- Insufflation of 100% fresh air, with Heating or Cooling, and humidification of exterior's air till the reachment of insufflation conditions; II- Insufflation of 100% fresh air, with Dehumidification and Heating; III- Dehumidification and Heating of the mixture of fresh air and vitiated air from the installation; a) Absolute Humidity of insufflation air; b) Enthalpy line for interior conditions of the building; c) Interior conditions' point of acclimatized space).

Landscapes

  • 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)
  • Air Conditioning Control Device (AREA)
  • Central Air Conditioning (AREA)
  • Air Supply (AREA)

Abstract

L'invention concerne une unité de traitement de l'air (ATU), de déshumidification et de réchauffement efficace du point de vue énergétique, qui est équipée de deux échangeurs de chaleur (12, 19) alimentés respectivement par une unité de refroidissement et une chaudière, entre lesquels est disposé un récupérateur thermique (13). En traversant les trois composants, l'écoulement d'air forcé, entraîné par des ventilateurs (14, 21), atteint l'humidité et la température de remplissage pour les conditions internes. Dans cette configuration, l'ATU permet d'utiliser le récupérateur de chaleur pour des périodes de chauffe pendant lesquelles 100 % d'air frais est chauffé avec/sans humidification (20-humidificateur), des périodes de déshumidification et de réchauffement pendant lesquelles 100 % d'air frais ou de mélange d'air frais et d'air ajouté est déshumidifié et réchauffé, ce qui permet de réduire la consommation énergétique pour le traitement de l'air. Au cours de périodes de traitement de 100 % d'air frais et de refroidissement par ventilation forcée de l'espace, une dérivation est formée pour le récupérateur de chaleur. Cette unité assure la bonne qualité de l'air à l'intérieur de bâtiments, et permet d'éviter, par exemple, des problèmes de Legionella, de concentrations de chlore dans des piscines couvertes et de CO2 dans des bâtiments comprenant des équipements de régulation de l'humidité.
EP07826572A 2006-09-27 2007-09-27 Unité de traitement de l'air, de déshumidification et de réchauffement efficace du point de vue énergétique Withdrawn EP2066984A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT103572A PT103572A (pt) 2006-09-27 2006-09-27 Unidade de tratamento de ar, de desumidificação e aquecimento, energéticamente eficiente
PCT/IB2007/053938 WO2008038250A2 (fr) 2006-09-27 2007-09-27 Unité de traitement de l'air, de déshumidification et de réchauffement efficace du point de vue énergétique

Publications (1)

Publication Number Publication Date
EP2066984A2 true EP2066984A2 (fr) 2009-06-10

Family

ID=38983397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07826572A Withdrawn EP2066984A2 (fr) 2006-09-27 2007-09-27 Unité de traitement de l'air, de déshumidification et de réchauffement efficace du point de vue énergétique

Country Status (3)

Country Link
EP (1) EP2066984A2 (fr)
PT (1) PT103572A (fr)
WO (1) WO2008038250A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0820803D0 (en) * 2008-11-13 2008-12-24 Esg Pool Ventilation Ltd Building ventilation apparatus
DE102009015479A1 (de) * 2009-03-28 2010-09-30 Ltg Aktiengesellschaft Dezentrales Zu-und Abluftgerät sowie Verfahren zum dezentralen Lüften und/oder Klimatisieren
FR2944587B1 (fr) * 2009-04-15 2012-05-11 Air Habitat Dispositif de traitement d'air.
FR2978532B1 (fr) * 2011-07-28 2017-09-08 Energie Et Transfert Thermique Dispositif de chauffage et/ou de climatisation d'un batiment comportant un humidificateur d'air a ruissellement d'eau
AR089003A1 (es) * 2011-11-28 2014-07-23 Syngenta Participations Ag Secador piloto escalable
ES2530317B8 (es) * 2014-05-22 2016-01-11 Metalast S.A.U. Sistema de control de la calidad del aire en un recinto
CN107131555B (zh) * 2016-02-26 2022-01-18 大金工业株式会社 空气净化装置
CN106969419A (zh) * 2017-04-25 2017-07-21 广东芬尼克兹节能设备有限公司 除湿机结构及其使用方法
CN107062565A (zh) * 2017-06-19 2017-08-18 王福军 一种室内空气调节方法及其调节系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761966A (en) * 1984-10-19 1988-08-09 Walter Stark Dehumidification and cooling system
FR2742216B3 (fr) * 1995-12-08 1998-02-27 Bernier Jacques Dispositif de deshumification par pompe a chaleur
EP1616133B1 (fr) * 2003-04-23 2008-10-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Evaporateur combine fluide/air et concept de branchement d'une pompe a chaleur dans un appareil de ventilation
DE102006007848B4 (de) * 2006-02-17 2022-03-17 Menerga Gmbh Anlage zum Erwärmen einer Einrichtung wie einer Halle mit hohem Temperaturniveau, die entfeuchtet werden muss, insbesondere einer Schwimmhalle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008038250A2 *

Also Published As

Publication number Publication date
PT103572A (pt) 2008-03-31
WO2008038250A2 (fr) 2008-04-03
WO2008038250A3 (fr) 2008-06-26

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