Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
  • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
  • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
  • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
  • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
• • 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
  • F24F2203/00—Devices or apparatus used for air treatment
  • F24F2203/10—Rotary wheel
  • F24F2203/1008—Rotary wheel comprising a by-pass channel
• • 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
  • F24F2203/1016—Rotary wheel combined with another type of cooling principle, e.g. compression cycle
• • 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

• Conditioning device for the supply air flow of a drying booth of a paint shop and method for conditioning the supply air flow
• the invention relates to a conditioning device for the supply air flow of a drying booth a Lackieranla- ge, with an outside air duct and an adjoining supply air duct, through which an outside air or supply air into the drying cabin can be introduced, an exhaust duct and an adjoining exhaust air duct , through which an exhaust air stream from the drying cabin or a stream of exhaust air can be diverted into the environment, a removal or adsorption device, which is arranged on the one hand in the exhaust air duct and on the other hand in the supply air duct and in which the supply air flow is dehumidified to a predefinable moisture content by means of the exhaust air flow
• a heat recovery device which is arranged upstream of the adsorption device in the exhaust air duct and on the other hand downstream of the adsorption device in the supply air duct and in which the dehumidified and in the desorption and adsorption heated supply air stream by means of the exhaust air discharged from the drying booth Cooling current is an aftercooler, which is
• the invention relates to a method for conditioning the supply air flow of a drying booth of a paint shop, in which an outside or supply air flow is introduced into the drying cabin, a discharge or exhaust air flow is discharged from the drying cabin in the environment, the supply air flow in one Ab- or adsorption device is dehumidified and heated by means of the exhaust air stream to a predetermined moisture content, which is cooled in the adsorption and dehumidified and heated supply air stream in a heat recovery device by means of the exhausted from the drying cabin exhaust air stream, the cooled in the heat recovery device supply air in a Aftercooler is cooled to a temperature required on entry into the drying booth, and the exhaust air flow between the heat recovery device and the adsorption device in a
• Afterheater is heated to a suitable temperature for the regeneration of the adsorption device.
• the invention has the object, the generic conditioning or the generic method for conditioning in such a way that the operation of Conditioning device or the implementation of the method for conditioning with a compared to the prior
• This object is achieved in terms of the above-described conditioning device in that branches off from the out of the drying booth exhaust duct at a first branch point, a recirculation duct, through which a portion of emerging from the drying booth exhaust air stream as circulating air flow in a second branching point with the outside air flow merge and then is introduced through the supply air duct as supply air into the drying cabin, and that upstream of the second branch point in the outside air duct, a precooler is arranged, by means of which the outside air flow can be cooled and dehumidified;
• the object underlying the invention is achieved in that diverted from the drying air outlet exhaust air stream recirculated air and then together with thelusterluft- ström to supply air and through the absorption or adsorption, the heat recovery device and the Aftercooler is introduced into the drying cabin, and that the outside air stream is pre-cooled in a pre-cooler before merging with the circulating air flow.
• the outside air flow is conditioned so that it assumes a state together with the recirculated from the exhaust air recirculation air flow condition, which allows that from the outside air flow and the circulating air composed Zu Kunststoffström in the downstream Ab- or Adsorptionsvorrich- on the desired moisture content of the supply air flow is dried.
• the regeneration of the adsorption device is by means of branched off from the exhaust air stream Exhaust air flow after preheating the same realized by means of the heat recovery device and a reheater.
• quasi-conditioned exhaust air is accordingly used to regenerate the conditioning or adsorption of the conditioning of the supply air flow.
• the supply air flow heated in the drying process which takes place in the absorption or adsorption device, is pre-cooled with the cooling potential of the unheated exhaust air flow leaving the drying cabin in the heat recovery device. After this precooling the supply air flow is cooled in an aftercooler to the required or desired temperature when entering the drying booth.
• the pre-cooler provided in the outside air duct and / or the aftercooler provided in the supply air duct are connected in the cold or heat network to the afterheater arranged in the outflow duct; accordingly, at a Advantageous embodiment of the method according to the invention, the exhaust air stream by means of upstream and / or aftercooler waste heat upstream of the adsorption device or adsorber heated to the suitable temperature for the regeneration of Ab- or Adsorptionsvorrich-, resulting in a further reduction of the regeneration energy demand.
• the adsorption device can be advantageously designed as a sorption rotor or wheel, one sector of the sorption rotor or wheel being associated with the exhaust air channel and the other sector of the sorption rotor or wheel with the supply air channel.
• the power of the heat recovery device can be regulated during operation of the conditioning device according to the invention or when carrying out the method according to the invention for conditioning, the waste heat produced during cooling can be dissipated in a sufficient manner.
• At least one heat exchanger is integrated in the exhaust air duct, by means of which waste heat arising from the refrigeration in the conditioning device can be discharged from the conditioning device.
• waste heat produced is transferred and removed by means of heat exchangers into the outgoing air stream.
• the precooler and / or the aftercooler is / are designed as a direct evaporator.
• the postheater can be formed in two stages with a corresponding requirement profile, wherein the postheater or the first and / or the second stage of the postheater can be designed as a capacitor or can.
• the pre-, the aftercooler and the reheater can be dispensed with the inclusion of external refrigerant, while the process heat released in the refrigeration process can be integrated into the drying process at the same time.
• a control valve is arranged in the circulating air channel, by means of which the volume flow of the circulating air flow can be controlled or regulated in carrying out the method according to the invention.
• the single figure shows a schematic diagram of a conditioning device according to the invention for the supply air flow of a drying booth of a paint shop.
• FIG. 1 of a conditioning device 1 is used to condition the supply air flow of a drying booth 2 of a painting installation not shown in such a way that the incoming air enters the drying booth 2 in particular with respect to its moisture content and temperature meets those requirements that are made in running in the drying booth 2 drying process.
• the target moisture content of the supply air when entering the drying booth 2 1.3 g / kg, the target temperature 30 degrees C.
• the volume of the supply air flow is 43000 m 3 / h.
• the conditioning device 1 has a precooler 3, a desorption or adsorption device 4, a postheater 5, a heat recovery device 6 and an aftercooler 7.
• the pre-cooler 3 is formed in the illustrated embodiment as a direct evaporator and arranged in an outside air duct 8 through which an outside air flow is introduced into the conditioning device 1.
• the outside air flow has a volume of 29500 m 3 / h, a temperature of 35 degrees C and a moisture content of 22 g / kg.
• the outside air duct 8 merges into a supply air duct 10 at a branching point 9.
• the outside air duct 8 and a recirculating air duct 11 join to the supply air duct 10.
• the outside air flow is combined with a circulating air flow to the supply air flow.
• the circulating air flow has a volume of 13500 m 3 / h, a moisture content of 3.5 g / kg and a temperature of 25 degrees C.
• the supply air stream composed of the outside air stream pre-cooled and dehumidified in the precooler 3 and the recirculating air stream has downstream of the branching point 9 Temperature of about 17 to 18 degrees C and a moisture content of about 8 g / kg.
• the recirculation duct 11 terminates at its branch point 9 opposite end in a further branch point 12, in the input side, an exhaust duct 13 opens, which branches at the branch point 12 in the recirculating air duct 11 and an exhaust air duct 14.
• an exhaust air flow from the drying booth 2 is led to the branch point 12.
• the exhaust air stream is divided into an exhaust air stream and the circulating air stream.
• the exhaust air flow in the embodiment shown has a moisture content of about 3.5 g / kg, a temperature of 25 degrees C and a volume of about 35000 m 3 / h.
• the volume difference between the supply air and the exhaust air flow is caused by losses occurring in the drying booth 2 during the drying process.
• Downstream of the branching point 12 the exhaust air stream flows through the exhaust air duct 14 with a volume of approximately 21,500 m 3 / h.
• the removal or adsorption device 4 is arranged in the supply air duct 10.
• the adsorption device 4 is designed as a sorption rotor or wheel and, except in the supply air duct 10, is arranged downstream of the afterheater 5 in the exhaust air duct 14.
• the supply air duct 10 associated region of the adsorption device 4 or the supply air stream is heated to a temperature of about 50 degrees C and dehumidified to a moisture content of about 1.3 g / kg.
• the heat recovery device 6 Downstream of the adsorption device 4 or 4, the heat recovery device 6 is arranged in the supply air duct 10, which is arranged with another section upstream of the reheater 5 in the exhaust air duct 14. In the heat recovery device 6, the supply air flow is cooled to 50 ° C. to about 38 to 40 ° C. while maintaining its moisture content as far as possible. For this purpose, in the heat recovery device 6 of the exhaust air stream having the temperature of 25 degrees C before entering the heat recovery device 6, heated.
• the aftercooler 7 Downstream of the heat recovery device 6, the aftercooler 7 is arranged in the supply air duct 10, by means of which the supply air flow of 38 to 40 degrees C to the desired temperature of about 30 degrees C when entering the drying booth 2 - while keeping the moisture content of 1.3 g / kg - is cooled.
• the aftercooler 7 is shown in the illustrated embodiment. tion example - as the precooler 3 - designed as a direct evaporator.
• the heat recovery device 6 is designed adjustable in the embodiment shown in order to ensure sufficient heat dissipation of the refrigeration.
• the postheater 5 arranged in the exhaust air duct downstream of the heat recovery device 6 and upstream of the adsorption device 4 can be designed in two stages with a corresponding requirement profile, wherein a configuration of the reheater 5 or its two stages as a condenser is expedient.
• the exhaust air flow is adjusted in terms of its temperature so that it is sufficient for the regeneration of the adsorption device 4, by means of which the supply air flow heated to 50 degrees C and the target moisture content of 1.3 g / kg is.
• the exhaust air flow in the embodiment shown has a moisture content of 17 g / kg and a temperature of 51 degrees C, its volume still amounts to 21500 m 3 / h.
• a control valve 15 is provided in the circulating air 11, by means of which the volume of the circulating air flow and thus indirectly the proportion of the recirculating air flow and the exhaust air flow is adjustable at the exhaust air flow.
• the precooler 3 provided in the outside air duct 8 and the aftercooler 7 provided in the supply air duct 10 are in the cold or heat connection with the pre-cooler 3
• Exhaust air duct 14 arranged reheater 5 is connected, so that the waste heat obtained during the cooling can be used for heating the exhaust air stream upstream of the adsorption device.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Drying Of Gases (AREA)
• Drying Of Solid Materials (AREA)
• Central Air Conditioning (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38962036

Family Applications (1)

Country Status (12)

Families Citing this family (10)

Family Cites Families (7)

• 2006
  • 2006-11-20 DE DE102006054875A patent/DE102006054875A1/de not_active Withdrawn
• 2007
  • 2007-10-19 MX MX2009005198A patent/MX2009005198A/es not_active Application Discontinuation
  • 2007-10-19 CA CA002669257A patent/CA2669257A1/en not_active Abandoned
  • 2007-10-19 KR KR1020097009571A patent/KR20090091125A/ko not_active Application Discontinuation
  • 2007-10-19 RU RU2009123437/06A patent/RU2009123437A/ru unknown
  • 2007-10-19 US US12/515,430 patent/US20100146810A1/en not_active Abandoned
  • 2007-10-19 WO PCT/EP2007/009072 patent/WO2008061598A1/de active Application Filing
  • 2007-10-19 CN CNA2007800428794A patent/CN101535726A/zh active Pending
  • 2007-10-19 EP EP07819137A patent/EP2092247A1/de not_active Withdrawn
  • 2007-10-19 JP JP2009537497A patent/JP2010510472A/ja active Pending
  • 2007-10-19 BR BRPI0719046-8A2A patent/BRPI0719046A2/pt not_active Application Discontinuation
• 2009
  • 2009-04-20 MA MA31801A patent/MA30802B1/fr unknown

Non-Patent Citations (1)

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