WO2012097908A1 - Enclosure system with thermal barrier for hvac air handling units - Google Patents

Enclosure system with thermal barrier for hvac air handling units Download PDF

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Publication number
WO2012097908A1
WO2012097908A1 PCT/EP2011/071620 EP2011071620W WO2012097908A1 WO 2012097908 A1 WO2012097908 A1 WO 2012097908A1 EP 2011071620 W EP2011071620 W EP 2011071620W WO 2012097908 A1 WO2012097908 A1 WO 2012097908A1
Authority
WO
WIPO (PCT)
Prior art keywords
panels
enclosure system
thermal barrier
polyurethane foam
metal
Prior art date
Application number
PCT/EP2011/071620
Other languages
French (fr)
Inventor
Pietro TASSON
Antonio TASSON
Robert Peter TASSON
Original Assignee
Tasson Pietro
Tasson Antonio
Tasson Robert Peter
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 Tasson Pietro, Tasson Antonio, Tasson Robert Peter filed Critical Tasson Pietro
Publication of WO2012097908A1 publication Critical patent/WO2012097908A1/en

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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0263—Insulation for air ducts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/04—Air-ducts or air channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/063—Walls defining a cabinet formed by an assembly of panels

Definitions

  • TITLE Enclosure System with Thermal Barrier for HVAC Air Handling Units
  • the present invention is directed to thermally-enhanced HVAC constructions or components.
  • HVAC Heating, ventilation and air conditioning
  • HVAC Heating, ventilation and air conditioning
  • AHUs Air Handling Units
  • AHU components typically include motors, heating/cooling coils, and blowers as well as the required interface connections to these components to affect such climate control.
  • Standard AHU enclosure construction uses sheet metal construction with a type of fiber insulation (i.e. fiber glass or rock wool) to provide some sort of insulation.
  • the problem with standard construction is that there are many points where the outside metal is in direct contact with the inside metal due in the inability of the fiber insulation in providing any structure to the enclosure. Since metal is a very good conductor of heat, these through-metal points allow a significant amount of energy to be lost.
  • the AHU of the current invention is an enclosed interconnected framed panel structure.
  • the enclosure structures have insulated panels that are supported between framing members to define interconnected rectangular compartments.
  • the insulating material used in the panel is polyurethane foam that is injected as liquids, which cures into foam and forms a structural core within the panel.
  • the method of the current invention allows for a no-through metal construction.
  • the present invention relates to a thermally-enhanced enclosure for use with an air handling unit including a framing system that does not require a thermal barrier and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the panels provide a no-through metal construction and the metal frames along with the panels provide structural strength to the enclosure.
  • the present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile forms the thermal barrier of the panels.
  • the present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile provides air-sealing features which significantly reduce air leakage.
  • the present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile that provides air-sealing features reduces the requirement for caulking or sealing during construction.
  • An advantage of the present invention is that it provides excellent thermal resistance compared to standard AHU construction due to the no-through metal features.
  • a yet further advantage of the present invention is that it requires lighter gauge sheet metal to be used compared to standard AHU construction due to the foam having structural properties. This greatly reduces the overall weight of the final AHU.
  • a still further advantage is the panels have a plastic extrusion which also has air-sealing features. This significantly reduces the use of caulking or other sealants during construction and reduces air leakage in the AHU.
  • a still further advantage of the present invention is that it that may prevent the formation of condensation on the outer surfaces of HVAC components.
  • FIG. 1 is a cross section of a panel of the present invention
  • FIG. 2 is a cross section of a roof corner construction of the present invention
  • FIG. 3 is a cross section of a wall construction of the present invention.
  • FIG. 4 is a cross section of a base corner construction of the present invention
  • FIG. 5 is a cross section of a unit split construction of the present invention
  • FIG. 6 is a cross section of wall and roof construction of the present invention.
  • FIG. 7 is an exploded view of the rubber plugs and mating extrusions of the present invention.
  • FIG 8 is an exploded view of the structural framing system of the present invention.
  • FIG 9 is an isometric view of the structural framing system of the present invention.
  • Panel 100 is comprised of two half outer liner sheet metal formed pans 130 with plastic barrier extrusion 120 installed between them.
  • Metal liners 130 form a volume which is filled with polyurethane foam 140.
  • Polyurethane foam 140 provides thermal insulation as well as structural strength to the panel. The thermal break is achieved by plastic extrusions 120 located on the depth of the panel. Plastic extrusion 120 also contains features 122 to allow for integrated air sealing.
  • the wall construction is shown.
  • a plurality of insulated panels 100 are installed and held together by H-profile extrusion 310 which is fastened to metal liners 130 of the panel.
  • Internal feature 320 of H- Profile extrusion 310 along with features 122 of plastic profile 120 provide air sealing to the enclosure.
  • H-profile extrusions 310 have a thermal barrier 315.
  • the inside of the AHU is thermally isolated from the outside as is shown.
  • the roof corner construction is shown.
  • a plurality of insulated panels 100 are installed along with a plurality of metal corner profiles 210 to form the wall and roof construction.
  • Metal profiles 210 have a thermal barrier 215.
  • Metal profile feature 211 mates with plastic profile 120 of panel 100 and provides an air seal by plastic profile features 122.
  • the inside of the AHU is thermally isolated from the outside as is shown.
  • the base corner construction is shown.
  • a plurality of insulated panels 100 are installed along with a plurality of metal profiles 410 to form the wall and base construction.
  • Metal profiles 410 have a thermal barrier 415.
  • the entire AHU is supported by a structural metal base comprised of a plurality of metal profiles 420 and 450.
  • Floor 430 is thermally isolated from structural members 420 and 450 by a plurality of Z-profile extrusions 440.
  • the inside of the AHU is thermally isolated from the outside as is shown.
  • the enclosure split construction is shown.
  • a plurality of insulated panels 100 are installed along with a plurality of metal profiles 510 to form an enclosure split construction.
  • metal profiles 510 When an AHU is too large to transport in one piece, it is broken up into sections which are joined together in the final assembly. The multiple sections are held together in the final assembly by split profiles 510 which are fastened together.
  • Metal profiles 510 have a thermal barrier 515.
  • the inside of the AHU is thermally isolated from the outside as is shown.
  • FIG. 6 in a preferred embodiment of the present invention, the enclosure wall and roof construction is shown. The inside of the AHU is thermally isolated from the outside as is shown.
  • H-profile plug 720 and Corner-profile plug 710 are shown. These plugs are composed of rubber and are installed on the metal extrusions to form an air seal when mating with corresponding metal extrusions 210 and 310 during construction. These plugs reduce the need for caulking during construction.
  • H-profile plug 720 and Corner-profile plug 710 are installed on the metal extrusions to form an air seal when mating with corresponding metal extrusions 210,310,410 and 510. These plugs reduce the need for caulking during construction.
  • FIG. 8 in a preferred embodiment of the present invention, the structural framing construction of the invention is shown in an isometric view.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)

Abstract

An enclosure system for HVAC Air Handling Units which consists of a framing system and panels with a thermal barrier. The framing system is made of metal profiles (usually aluminum extrusions) which have a thermal barrier. The panels are comprised of two half outer liner sheet metal formed pans with plastic barrier extrusion installed between them. The metal liners form a volume which is filled with polyurethane foam. The polyurethane foam provides thermal insulation as well as structural strength to the panel. The thermal break is achieved by the plastic extrusions located on the depth of the panel. This plastic extrusion also contains features to allow for integrated air sealing.

Description

TITLE: Enclosure System with Thermal Barrier for HVAC Air Handling Units
The present invention is directed to thermally-enhanced HVAC constructions or components.
Heating, ventilation and air conditioning ("HVAC") systems are commonly used in many climate control applications. Air Handling Units (AHUs) are one of several components in HVAC systems. They are an important component as the AHU houses a number of components used in the system to provide forced air for climate control in a particular structure. AHU components typically include motors, heating/cooling coils, and blowers as well as the required interface connections to these components to affect such climate control.
Standard AHU enclosure construction uses sheet metal construction with a type of fiber insulation (i.e. fiber glass or rock wool) to provide some sort of insulation. The problem with standard construction is that there are many points where the outside metal is in direct contact with the inside metal due in the inability of the fiber insulation in providing any structure to the enclosure. Since metal is a very good conductor of heat, these through-metal points allow a significant amount of energy to be lost.
The AHU of the current invention is an enclosed interconnected framed panel structure. The enclosure structures have insulated panels that are supported between framing members to define interconnected rectangular compartments. The insulating material used in the panel is polyurethane foam that is injected as liquids, which cures into foam and forms a structural core within the panel. The method of the current invention allows for a no-through metal construction.
The present invention relates to a thermally-enhanced enclosure for use with an air handling unit including a framing system that does not require a thermal barrier and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the panels provide a no-through metal construction and the metal frames along with the panels provide structural strength to the enclosure.
The present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile forms the thermal barrier of the panels.
The present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile provides air-sealing features which significantly reduce air leakage.
The present invention further relates to a thermally- enhanced enclosure for use with an air handling unit including a framing system with thermal barriers and polyurethane foam panels with an extruded plastic thermal barrier. Wherein upon the extruded plastic profile that provides air-sealing features reduces the requirement for caulking or sealing during construction. An advantage of the present invention is that it provides excellent thermal resistance compared to standard AHU construction due to the no-through metal features.
A yet further advantage of the present invention is that it requires lighter gauge sheet metal to be used compared to standard AHU construction due to the foam having structural properties. This greatly reduces the overall weight of the final AHU.
A still further advantage is the panels have a plastic extrusion which also has air-sealing features. This significantly reduces the use of caulking or other sealants during construction and reduces air leakage in the AHU.
A still further advantage of the present invention is that it that may prevent the formation of condensation on the outer surfaces of HVAC components.
Other features and advantages of the present invention will be apparent from the following more detailed description of the preferred embodiment, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.
Brief description of the drawings
FIG. 1 is a cross section of a panel of the present invention;
FIG. 2 is a cross section of a roof corner construction of the present invention;
FIG. 3 is a cross section of a wall construction of the present invention;
FIG. 4 is a cross section of a base corner construction of the present invention; FIG. 5 is a cross section of a unit split construction of the present invention;
FIG. 6 is a cross section of wall and roof construction of the present invention;
FIG. 7 is an exploded view of the rubber plugs and mating extrusions of the present invention;
FIG 8 is an exploded view of the structural framing system of the present invention;
FIG 9 is an isometric view of the structural framing system of the present invention.
One embodiment of a typical panel that incorporates a thermally enhanced component or construction of the present invention is depicted in FIG. 1. Panel 100 is comprised of two half outer liner sheet metal formed pans 130 with plastic barrier extrusion 120 installed between them. Metal liners 130 form a volume which is filled with polyurethane foam 140. Polyurethane foam 140 provides thermal insulation as well as structural strength to the panel. The thermal break is achieved by plastic extrusions 120 located on the depth of the panel. Plastic extrusion 120 also contains features 122 to allow for integrated air sealing.
Referring to FIG.3, in a preferred embodiment of the present invention, the wall construction is shown. A plurality of insulated panels 100 are installed and held together by H-profile extrusion 310 which is fastened to metal liners 130 of the panel. Internal feature 320 of H- Profile extrusion 310 along with features 122 of plastic profile 120 provide air sealing to the enclosure. H-profile extrusions 310 have a thermal barrier 315. The inside of the AHU is thermally isolated from the outside as is shown. Referring to FIG. 2, in a preferred embodiment of the present invention, the roof corner construction is shown. A plurality of insulated panels 100 are installed along with a plurality of metal corner profiles 210 to form the wall and roof construction. Metal profiles 210 have a thermal barrier 215. Metal profile feature 211 mates with plastic profile 120 of panel 100 and provides an air seal by plastic profile features 122. The inside of the AHU is thermally isolated from the outside as is shown.
Referring to FIG. 4, in a preferred embodiment of the present invention, the base corner construction is shown. A plurality of insulated panels 100 are installed along with a plurality of metal profiles 410 to form the wall and base construction. Metal profiles 410 have a thermal barrier 415. The entire AHU is supported by a structural metal base comprised of a plurality of metal profiles 420 and 450. Floor 430 is thermally isolated from structural members 420 and 450 by a plurality of Z-profile extrusions 440. The inside of the AHU is thermally isolated from the outside as is shown.
Referring to FIG. 5, in a preferred embodiment of the present invention, the enclosure split construction is shown. A plurality of insulated panels 100 are installed along with a plurality of metal profiles 510 to form an enclosure split construction. When an AHU is too large to transport in one piece, it is broken up into sections which are joined together in the final assembly. The multiple sections are held together in the final assembly by split profiles 510 which are fastened together. Metal profiles 510 have a thermal barrier 515. The inside of the AHU is thermally isolated from the outside as is shown. Referring to FIG. 6, in a preferred embodiment of the present invention, the enclosure wall and roof construction is shown. The inside of the AHU is thermally isolated from the outside as is shown.
Referring to FIG. 7, in a preferred embodiment of the present invention, H-profile plug 720 and Corner-profile plug 710 are shown. These plugs are composed of rubber and are installed on the metal extrusions to form an air seal when mating with corresponding metal extrusions 210 and 310 during construction. These plugs reduce the need for caulking during construction.
Referring to FIG. 8, in a preferred embodiment of the present invention, the structural framing construction of the invention is shown in an exploded view. H-profile plug 720 and Corner-profile plug 710 are installed on the metal extrusions to form an air seal when mating with corresponding metal extrusions 210,310,410 and 510. These plugs reduce the need for caulking during construction.
Referring to FIG. 8, in a preferred embodiment of the present invention, the structural framing construction of the invention is shown in an isometric view.

Claims

CLAIMS What is claimed is:
1. A thermally broken HVAC enclosure system comprising: a substantially enclosed and contiguous air handling unit structure having a metal frame system with a thermal barrier; polyurethane foam filled panels, these panels constructed from two half outer liner sheet metal pans with plastic barrier extrusion installed between them, these panels having a thermal barrier in the form of an extruded plastic profile.
2. A thermally broken HVAC enclosure system of claim 1 wherein the extruded plastic profile in the panels has features which restrict air flow.
3. A thermally broken HVAC enclosure system of claim 1 wherein the extruded plastic profile in the panels has features which reduce the need to add sealant for air leakage .
4. A thermally broken HVAC enclosure system of claim 1 wherein the polyurethane foam inside the panels provide excellent thermal insulation.
5. A thermally broken HVAC enclosure system of claim 1 wherein the polyurethane foam inside the panels provides structural strength.
PCT/EP2011/071620 2011-01-18 2011-12-02 Enclosure system with thermal barrier for hvac air handling units WO2012097908A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161433543P 2011-01-18 2011-01-18
US61/433,543 2011-01-18

Publications (1)

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WO2012097908A1 true WO2012097908A1 (en) 2012-07-26

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091291A (en) * 2015-09-16 2015-11-25 珠海格力电器股份有限公司 Foaming board assembly, manufacturing method of foaming board assembly, fan coil casing and fan coil
DK178436B1 (en) * 2014-10-02 2016-02-29 Linknordic Aps Fire Insulation Cabinet for Air Handling Units
WO2016149000A1 (en) * 2015-03-18 2016-09-22 Carrier Corporation Panel for an air handling unit, method for assembling such a panel, and air handling unit including such a panel
ITUA20161362A1 (en) * 2016-03-04 2017-09-04 Nova Therm Srl Assembly system for profiles of an air conditioner case
ES2638835R1 (en) * 2016-01-26 2017-11-15 JCF Cerrajerías de Lorca, S.L.L. System for forming prefabricated modules
CN107429941A (en) * 2015-03-18 2017-12-01 开利公司 The panel of air conditioner unit module
CN110499866A (en) * 2019-08-27 2019-11-26 国网湖南省电力有限公司 A kind of fire prevention sound insulation wallboard of assembled substation
WO2020015605A1 (en) * 2018-07-16 2020-01-23 中山升华伟基空调设备有限公司 Thermal insulation main frame for air supply cabinet of central air-conditioning
WO2020015604A1 (en) * 2018-07-16 2020-01-23 中山升华伟基空调设备有限公司 Combination-type thermal insulation aluminium profile
EP4089341A1 (en) * 2021-05-14 2022-11-16 A.P.S. Arosio S.p.A. A joining system in air treatment units
US11668491B2 (en) 2021-05-25 2023-06-06 Daikin Applied Americas Inc. Thermally broken panel assembly for an air handler cabinet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366637A1 (en) * 1988-10-24 1990-05-02 Abb Fläkt Oy A joint for air-conditioning units
US20030013406A1 (en) * 2001-07-13 2003-01-16 Herbeck Christian C. Panel retention mechanism for air handler cabinet
WO2003006891A1 (en) * 2001-07-13 2003-01-23 Carrier Corporation Thermal barrier for air handling unit (ahu) cabinet
EP1400167A2 (en) * 2002-09-19 2004-03-24 Thomas Pollmeier Exhaust duct, in particular for animal houses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366637A1 (en) * 1988-10-24 1990-05-02 Abb Fläkt Oy A joint for air-conditioning units
US20030013406A1 (en) * 2001-07-13 2003-01-16 Herbeck Christian C. Panel retention mechanism for air handler cabinet
WO2003006891A1 (en) * 2001-07-13 2003-01-23 Carrier Corporation Thermal barrier for air handling unit (ahu) cabinet
EP1417443A1 (en) * 2001-07-13 2004-05-12 Carrier Corporation Thermal barrier for air handling unit (ahu) cabinet
EP1400167A2 (en) * 2002-09-19 2004-03-24 Thomas Pollmeier Exhaust duct, in particular for animal houses

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK178436B1 (en) * 2014-10-02 2016-02-29 Linknordic Aps Fire Insulation Cabinet for Air Handling Units
CN107429940A (en) * 2015-03-18 2017-12-01 开利公司 Panel for air conditioner unit, the method for assembling this panel and the air conditioner unit for including this panel
US10352583B2 (en) 2015-03-18 2019-07-16 Carrier Corporation Panel for an air handling unit, method for assembling such a panel, and air handling unit including such a panel
FR3033870A1 (en) * 2015-03-18 2016-09-23 Cie Ind D'applications Thermiques PANEL FOR AN AIR PROCESSING PLANT, METHOD OF ASSEMBLING SUCH A PANEL AND AIR PROCESSING PLANT COMPRISING SUCH A PANEL
CN107429940B (en) * 2015-03-18 2021-03-30 开利公司 Panel for an air handling unit, method for assembling such a panel and air handling unit comprising such a panel
WO2016149000A1 (en) * 2015-03-18 2016-09-22 Carrier Corporation Panel for an air handling unit, method for assembling such a panel, and air handling unit including such a panel
CN107429941A (en) * 2015-03-18 2017-12-01 开利公司 The panel of air conditioner unit module
CN105091291A (en) * 2015-09-16 2015-11-25 珠海格力电器股份有限公司 Foaming board assembly, manufacturing method of foaming board assembly, fan coil casing and fan coil
ES2638835R1 (en) * 2016-01-26 2017-11-15 JCF Cerrajerías de Lorca, S.L.L. System for forming prefabricated modules
ITUA20161362A1 (en) * 2016-03-04 2017-09-04 Nova Therm Srl Assembly system for profiles of an air conditioner case
WO2020015605A1 (en) * 2018-07-16 2020-01-23 中山升华伟基空调设备有限公司 Thermal insulation main frame for air supply cabinet of central air-conditioning
WO2020015604A1 (en) * 2018-07-16 2020-01-23 中山升华伟基空调设备有限公司 Combination-type thermal insulation aluminium profile
CN110499866A (en) * 2019-08-27 2019-11-26 国网湖南省电力有限公司 A kind of fire prevention sound insulation wallboard of assembled substation
EP4089341A1 (en) * 2021-05-14 2022-11-16 A.P.S. Arosio S.p.A. A joining system in air treatment units
US11668491B2 (en) 2021-05-25 2023-06-06 Daikin Applied Americas Inc. Thermally broken panel assembly for an air handler cabinet

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