A method of making a data centre is disclosed, comprising making a data centre in an existing building (3010) having a floor, walls and a roof, an air inlet and an air outlet. The method includes: installing prefabricated data centre elements by (a) connecting to the inlet an air handling module (3001, 3002); and (b) installing cold aisle services modules (3011) each having one or more integrated blanking portions and one or more data centre services extending along its length terminating with a connection to an adjacent module (3011); and installing racks of IT equipment arranged in parallel rows; the method being so performed that the floor, racks, and cold aisle services modules (3011) together define parallel cold aisles for entraining cooling air flows to the IT equipment. Also disclosed are a data centre, a service carrying frame and a cold aisle services module for a data centre and a supporting frame for supporting prefabricated data centre elements.
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p. ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance
B23P 15/26 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'échangeurs de chaleur
E04H 5/00 - Bâtiments ou groupes de bâtiments à des fins industrielles ou agricoles
A method of cooling a data centre having at least one hot aisle (145) and at least one cold aisle (144), including the steps of producing cooling air having controlled to have temperature and relative humidity within certain pre-defined limits; supplying the cooling air to a plurality of items of IT equipment (143) located in the data centre between the cold aisle and the hot aisle; measuring the velocity of air flowing from the hot aisle to the cold aisle through an opening (150) between the hot aisle and the cold aisle; and controlling the rate of supply of cooling air to the items of IT equipment in dependence on the velocity of air so measured.
A data centre comprises a plurality of sections assembled together to define a unitary structure such that there exists at least one personnel area that spans at least two sections; wherein the sections comprise a first section with which there is associated a first service-carrying chassis and a second section with which there is associated a second service-carrying chassis, each of the first and second service-carrying chassis comprising a frame onto which is mounted components of at least two different services; the first and second chassis are connected to each other by means of a junction between the first and second chassis; and the first and second sections each include a ceiling and the first service carrying chassis is mounted on the ceiling of the first section and the second service carrying chassis is mounted on the ceiling of the second section.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
E04B 1/34 - Structures particulières, p. ex. avec des parties suspendues ou en encorbellement supportées par des poteaux ou des structures analogues à des tours, renfermant des ascenseurs ou des escaliersConstructions en généralStructures qui ne sont limitées ni aux murs, p. ex. aux cloisons, ni aux planchers, ni aux plafonds, ni aux toits caractéristiques relatives à la stabilité élastique
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
E04B 1/343 - Structures caractérisées par des parties mobiles, séparables ou repliables, p. ex. pour le transport
E04H 1/00 - Bâtiments ou groupes de bâtiments pour habitation ou à usage de bureauxTracé général, p. ex. coordination modulaire ou étages en attique
E04H 1/12 - Petits bâtiments ou autres constructions pour occupation limitée, élevés en plein air ou aménagés à l'intérieur de bâtiments, p. ex. kiosques, abris pour arrêts d'autobus ou pour stations de distribution d'essence, toits pour quais de gare, guérites de gardien ou cabines de bains
E04B 1/348 - Structures composées d'unités comportant au moins des parties importantes des deux côtés d'une pièce, c.-à-d. unités en forme de boîtes ou de cellules closes ou en forme de carcasses
E04H 5/00 - Bâtiments ou groupes de bâtiments à des fins industrielles ou agricoles
A method of making a data centre is disclosed, comprising making a data centre in an existing building (3010) having a floor, walls and a roof, an air inlet and an air outlet. The method includes: installing prefabricated data centre elements by (a) connecting to the inlet an air handling module (3001, 3002); and (b) installing cold aisle services modules (3011) each having one or more integrated blanking portions and one or more data centre services extending along its length terminating with a connection to an adjacent module (3011); and installing racks of IT equipment arranged in parallel rows; the method being so performed that the floor, racks, and cold aisle services modules (3011) together define parallel cold aisles for entraining cooling air flows to the IT equipment. Also disclosed are a data centre, a service carrying frame and a cold aisle services module for a data centre and a supporting frame for supporting prefabricated data centre elements.
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
B23P 15/26 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'échangeurs de chaleur
H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p. ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance
E04H 5/00 - Bâtiments ou groupes de bâtiments à des fins industrielles ou agricoles
d) on the floor, each rack storage area accommodating racks in which items of electronic equipment having at least one fan (204) are housed; one or more cold aisles (205) in the rack room, each cold aisle being adjacent to a rack storage area; one or more hot aisles (206) in the rack room, each hot aisle being adjacent to a rack storage area; and an air supply corridor (207) for transporting cooling air, above the floor, from the cooling air source to the one or more cold aisles. The method optionally comprises transporting cooling air from the cooling air source (201) to the one or more cold aisles (205) substantially under the control of the fans (204) of the items of electronic equipment.
An air handling unit for a data centre, a data centre comprising such, a method of operating such, and a method of cooling IT equipment in a data centre using such, is disclosed. The unit comprises an external airflow path (102) arranged to be in fluid communication with outside air, a separate internal airflow path (103) arranged to be in fluid communication with inside air, and heat tube panels (106). Preferably, each heat tube panel (106) comprises a heat tube comprising a first section in the external airflow path (102) and a second section in the internal airflow path (103). Preferably, the plurality of heat tube panels (106) is in a row across the internal and external air flow paths (103, 102). Preferably, at least one of the heat tube panels (106) is removable and extends through an opening between the internal and external air flow paths (103, 102).
h) assembled together to define a unitary structure (10) such that there exists at least one personnel area that spans at least two sections; wherein the sections comprise a first section with which there is associated a first service—carrying chassis (40, 50, 60, 70) and a second section with which there is associated a second service—carrying chassis (40, 50, 60, 70), each of the first and second service—carrying chassis comprising a frame (41, 51, 61, 71) onto which is mounted components of at least two different services (42-44, 46); the first and second chassis are connected to each other by means of a junction (47) between the first and second chassis; and the first and second sections each include a ceiling (22) and the first service carrying chassis is mounted on the ceiling of the first section and the second service carrying chassis is mounted on the ceiling of the second section.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
E04B 1/34 - Structures particulières, p. ex. avec des parties suspendues ou en encorbellement supportées par des poteaux ou des structures analogues à des tours, renfermant des ascenseurs ou des escaliersConstructions en généralStructures qui ne sont limitées ni aux murs, p. ex. aux cloisons, ni aux planchers, ni aux plafonds, ni aux toits caractéristiques relatives à la stabilité élastique
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
E04B 1/343 - Structures caractérisées par des parties mobiles, séparables ou repliables, p. ex. pour le transport
E04H 1/00 - Bâtiments ou groupes de bâtiments pour habitation ou à usage de bureauxTracé général, p. ex. coordination modulaire ou étages en attique
E04H 1/12 - Petits bâtiments ou autres constructions pour occupation limitée, élevés en plein air ou aménagés à l'intérieur de bâtiments, p. ex. kiosques, abris pour arrêts d'autobus ou pour stations de distribution d'essence, toits pour quais de gare, guérites de gardien ou cabines de bains
E04B 1/348 - Structures composées d'unités comportant au moins des parties importantes des deux côtés d'une pièce, c.-à-d. unités en forme de boîtes ou de cellules closes ou en forme de carcasses
E04H 5/00 - Bâtiments ou groupes de bâtiments à des fins industrielles ou agricoles
An air handling unit for a data center, a data center comprising such a unit, a method of operating such a unit and a method of cooling IT equipment in a data center using such a unit is disclosed. An indirect air handling unit (IDAHU) (101) for a data center comprises an external air flow path (102) arranged to be in fluid communication with air outside the data center; an internal air flow path (103) arranged to be in fluid communication with air inside the data center, wherein the external air flow path (102) is separated from the internal air flow path (103); and a plurality of heat tube panels (106).
A method of providing cooling air for cooling data centre IT equipment, an evaporative humidifier and an air handling unit is disclosed. The method comprises operating an evaporative humidifier (201) to humidify air for supply as IT equipment cooling air, the evaporative humidifier preferably comprising a deformable wettable matrix (207). Preferably, the method comprises steps of wetting the deformable wettable matrix (207), passing air through the wetted matrix (207) thus producing humidified air, and expelling water from the wettable matrix (207) by subjecting the wettable matrix to compressive deformation. The evaporative humidifier (201) preferably comprises a compressible wettable matrix (207), a water reservoir (217), a pump (218) for supplying water from the reservoir (217) to the wettable matrix (207), a frame for supporting the compressible wettable matrix, and an actuator (211) for effecting a compressive force on the compressible wettable matrix (207) for the purpose of expelling water from the wettable matrix (207). The air handling unit preferably comprises an evaporative humidifier (201) as disclosed.
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
B01F 3/04 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de gaz ou de vapeurs avec des liquides
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
d) on the floor, each rack storage area accommodating racks in which items of electronic equipment having at least one fan (204) are housed; one or more cold aisles (205) in the rack room, each cold aisle being adjacent to a rack storage area; one or more hot aisles (206) in the rack room, each hot aisle being adjacent to a rack storage area; and an air supply corridor (207) for transporting cooling air, above the floor, from the cooling air source to the one or more cold aisles. The method optionally comprises transporting cooling air from the cooling air source (201) to the one or more cold aisles (205) substantially under the control of the fans (204) of the items of electronic equipment.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
F25D 23/12 - Aménagements des compartiments annexes aux compartiments de refroidissementRéfrigérateurs combinés avec un autre appareil, p. ex. une cuisinière
A method of making a data centre is disclosed, comprising making a data centre in an existing building (3010) having a floor, walls and a roof, an air inlet and an air outlet. The method includes: installing prefabricated data centre elements by (a) connecting to the inlet an air handling module (3001, 3002); and (b) installing cold aisle services modules (3011) each having one or more integrated blanking portions and one or more data centre services extending along its length terminating with a connection to an adjacent module (3011); and installing racks of IT equipment arranged in parallel rows; the method being so performed that the floor, racks, and cold aisle services modules (3011) together define parallel cold aisles for entraining cooling air flows to the IT equipment. Also disclosed are a data centre, a service carrying frame and a cold aisle services module for a data centre and a supporting frame for supporting prefabricated data centre elements.
An air handling unit for a data centre, a data centre comprising such a unit, a method of operating such a unit and a method of cooling IT equipment in a data centre using such a unit is disclosed. An indirect air handling unit (IDAHU) (101) for a data centre comprises an external air flow path (102) arranged to be in fluid communication with air outside the data centre; an internal air flow path (103) arranged to be in fluid communication with air inside the data centre,wherein the external air flow path (102) is separated from the internal air flow path (103); and a plurality of heat tube panels (106). Preferably, each heat tube panel (106) comprises at least one heat tube, wherein each heat tube comprises a first section extending into the external air flow path (102) and a second section extending into the internal air flow path (103). Preferably, the plurality of heat tube panels (106) is arranged in at least one row across the internal air flow path (103) and across the external air flow path (102). Preferably, at least one of the heat tube panels (106) is a removable heat tube panel that extends through an opening between the internal air flow path (103) and the external air flow path (102).
A data centre (100) includes a resilient humidifier unit (10; 110) arranged to provide cooling air (160) for use in cooling IT equipment (162) in the data centre. The humidifier unit comprises two or more sets (12, 14) of removable sections that in use form a wetted matrix system for humidifying air flowing along a flow path from one side of the wetted matrix system to the other. The humidifier unit also comprises one or more water tanks (20, 22) for holding water, and two or more pumps (24) for pumping water from such a water tank to at least one of the removable wetted matrix sections. The humidifier unit (10) has a first mode of operation, corresponding to a maximum level of humidification, in which mode all of the sets of removable sections are wetted by water from the water tanks by means of operation of at least one of the pumps. The humidifier unit also has a second mode of operation both in the event of (a) a set of removable section being removed or otherwise rendered non-operational, the pumps otherwise being unaffected, and (b) a pump being removed or otherwise rendered non-operational, the removable sections otherwise being unaffected, such that in the second mode the humidification unit is still able to deliver the maximum level of humidification. Thus, the humidifier unit may be resilient to single point- failure of components critical to its operation.
A method of providing cooling air for cooling data centre IT equipment, an evaporative humidifier and an air handling unit is disclosed. The method comprises operating an evaporative humidifier (201) to humidify air for supply as IT equipment cooling air, the evaporative humidifier preferably comprising a deformable wettable matrix (207). Preferably, the method comprises steps of wetting the deformable wettable matrix (207), passing air through the wetted matrix (207) thus producing humidified air, and expelling water from the wettable matrix (207) by subjecting the wettable matrix to compressive deformation. The evaporative humidifier (201) preferably comprises a compressible wettable matrix(207), a water reservoir (217), a pump (218) for supplying water from the reservoir (217) to the wettable matrix (207), a frame for supporting the compressible wettable matrix, and an actuator (211) for effecting a compressive force on the compressible wettable matrix (207) for the purpose of expelling water from the wettable matrix (207). The air handling unit preferably comprises an evaporative humidifier (201) as disclosed.
A method of cooling a data centre, and a data centre,is disclosed. Optionally, the data centre comprises: a cooling air source(201);at least one rack room (202) having a floor and rack storage areas(203a-203d)on the floor, each rack storage area accommodating racks in which items of electronic equipment having at least one fan (204) are housed;one or more cold aisles (205) in the rack room, each cold aisle being adjacent to a rack storage area;one or more hot aisles (206) in the rack room, each hot aisle being adjacent to a rack storage area; and an air supply corridor (207) for transporting cooling air, above the floor, from the cooling air source to the one or more cold aisles. The method optionally comprises transporting cooling air from the cooling air source (201) to the one or more cold aisles (205) substantially under the control of the fans (204) of the items of electronic equipment.
A data center comprises a plurality of sections assembled together to define a unitary structure such that there exists at least one personnel area that spans at least two sections; wherein the sections comprise a first section with which there is associated a first service-carrying chassis and a second section with which there is associated a second service-carrying chassis, each of the first and second service-carrying chassis comprising a frame onto which is mounted components of at least two different services; the first and second chassis are connected to each other by means of a junction between the first and second chassis; and the first and second sections each include a ceiling and the first service carrying chassis is mounted on the ceiling of the first section and the second service carrying chassis is mounted on the ceiling of the second section.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
E04B 1/343 - Structures caractérisées par des parties mobiles, séparables ou repliables, p. ex. pour le transport
E04H 1/00 - Bâtiments ou groupes de bâtiments pour habitation ou à usage de bureauxTracé général, p. ex. coordination modulaire ou étages en attique
E04H 1/12 - Petits bâtiments ou autres constructions pour occupation limitée, élevés en plein air ou aménagés à l'intérieur de bâtiments, p. ex. kiosques, abris pour arrêts d'autobus ou pour stations de distribution d'essence, toits pour quais de gare, guérites de gardien ou cabines de bains
E04B 1/348 - Structures composées d'unités comportant au moins des parties importantes des deux côtés d'une pièce, c.-à-d. unités en forme de boîtes ou de cellules closes ou en forme de carcasses
E04H 5/00 - Bâtiments ou groupes de bâtiments à des fins industrielles ou agricoles
A method of cladding a building having an opening and a cladding system is disclosed. The method preferably comprises: securing a weather shield (1402) across at least part of the opening; attaching a cladding panel (1401) to the building over the outside of the weather shield (1402); and removing the weather shield (1402) from across at least part of the opening; the removing of the weather shield (1402) being carried out after the fixing of the cladding panel(1401). The system preferably comprises a weather shield (1402) for covering at least part of the opening, the weather shield (1402) being releasably securable to the building; and a cladding panel (1401) attachable to the building over the outside of the weather shield(1402); the weather shield (1402) being arranged such that it is detachable from the building after the cladding panel (1401) has been attached to the building over the outside of the weather shield (1402).
E04G 21/24 - Mesures de sécurité ou de protection pour éviter d'endommager les parties du bâtiment ou les finitions pendant la construction
E04G 21/28 - Mesures de sécurité ou de protection pour éviter d'endommager les parties du bâtiment ou les finitions pendant la construction contre les intempéries
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
F25D 23/12 - Aménagements des compartiments annexes aux compartiments de refroidissementRéfrigérateurs combinés avec un autre appareil, p. ex. une cuisinière
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
F25D 23/12 - Aménagements des compartiments annexes aux compartiments de refroidissementRéfrigérateurs combinés avec un autre appareil, p. ex. une cuisinière
h) assembled together to define a unitary structure (10) such that there exists at least one personnel area that spans at least two sections; wherein the sections comprise a first section with which there is associated a first service—carrying chassis (40, 50, 60, 70) and a second section with which there is associated a second service—carrying chassis 40, 50, 60, 70), each of the first and second service—carrying chassis comprising a frame (41, 51, 61, 71) onto which is mounted components of at least two different services (42-44, 46); the first and second chassis are connected to each other by means of a junction (47) between the first and second chassis; and the first and second sections each include a ceiling (22) and the first service carrying chassis is mounted on the ceiling of the first section and the second service carrying chassis is mounted on the ceiling of the second section.
E04H 1/12 - Petits bâtiments ou autres constructions pour occupation limitée, élevés en plein air ou aménagés à l'intérieur de bâtiments, p. ex. kiosques, abris pour arrêts d'autobus ou pour stations de distribution d'essence, toits pour quais de gare, guérites de gardien ou cabines de bains
E06B 7/02 - Aménagements particuliers ou dispositions en rapport avec les portes ou fenêtres pour assurer la ventilation, p. ex. à travers des doubles fenêtresAménagement de rosaces de ventilation
F25D 23/12 - Aménagements des compartiments annexes aux compartiments de refroidissementRéfrigérateurs combinés avec un autre appareil, p. ex. une cuisinière
A method of cooling a data center having at least one hot aisle (145) and at least one cold aisle (144), including the steps of producing cooling air having controlled to have temperature and relative humidity within certain pre-defined limits; supplying the cooling air to a plurality of items of IT equipment (143) located in the data center between the cold aisle and the hot aisle; measuring the velocity of air flowing from the hot aisle to the cold aisle through an opening (150) between the hot aisle and the cold aisle; and controlling the rate of supply of cooling air to the items of IT equipment in dependence on the velocity of air so measured.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
G05F 1/20 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type alternatif utilisant des transformateurs à prises ou des inductances à changement de prises comme dispositifs de réglage final associés à des tubes à décharge ou à des dispositifs à semi-conducteurs à des dispositifs à semi-conducteurs uniquement
A data centre comprises a plurality of sections (15a- 15h) assembled together to define a unitary structure (10) such that there exists at least one personnel area that spans at least two sections; wherein the sections comprise a first section with which there is associated a first service - carrying chassis (40, 50, 60, 70) and a second section with which there is associated a second service - carrying chassis40, 50, 60, 70), each of the first and second service - carrying chassis comprising a frame (41, 51, 61, 71) onto which is mounted components of at least two different services (42 - 44, 46 ); the first and second chassis are connected to each other by means of a j unction (47 ) between the first and second chassis; and the first and second sections each include a ceiling (22) and the first service carrying chassis is mounted on the ceiling of the first section and the second service carrying chassis is mounted on the ceiling of the second section.
A method of cooling a data centre having at least one hot aisle (145) and at least one cold aisle (144), including the steps of producing cooling air having controlled to have temperature and relative humidity within certain pre-defined limits; supplying the cooling air to a plurality of items of IT equipment (143) located in the data centre between the cold aisle and the hot aisle; measuring the velocity of air flowing from the hot aisle to the cold aisle through an opening (150) between the hot aisle and the cold aisle; and controlling the rate of supply of cooling air to the items of IT equipment in dependence on the velocity of air so measured.
A data centre building (100) comprises a rack room (140) comprising a plurality of racks (143) housing computer servers, at least one cold aisle (144), and at least one hot aisle (145). The data centre building (100) comprises a first set of air circulating devices, provided external to the rack room for example in an air optimiser unit (111), for transporting cooling air (118) from a cold aisle (144) via a rack (143) into a hot aisle (145). One or more racks (143) optionally comprise a second set of air circulating devices for cooling the rack- mountable electronic components. The cooling power of the first set of air circulating devices is greater than the cooling power of the second set of air circulating devices (if present). The first set of air circulating devices is used as the primary means for transporting cooling air (118).
A data centre building (100) includes at least one rack room (in for example module 140) having a floor and a plurality of rack storage areas on the floor, each rack storage area being arranged to accommodate a plurality of racks (143) in which a plurality of rack-mountable electronic components may be housed, one or more controllable air circulation systems (in for example module 122), one or more cold aisles (144) in the rack room, each cold aisle being adjacent to a rack storage area, and one or more hot aisles (145) in the rack room, each hot aisle being adjacent to a rack storage area. There may be a large air duct, in the form of a personnel corridor (123), for transporting, under the control of the one or more air circulation systems, cooling air, above the floor, to the one or more cold aisles. The air supply corridor/duct (123) may have a height greater than 1.5m above the floor and a cross-sectional area of at least 2m2 and a maximum dimension in the plane of the cross-section of less than 3m.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
E04H 5/02 - Bâtiments ou groupes de bâtiments à des fins industrielles, p. ex. pour centrales énergétiques ou usines
F24F 7/013 - Ventilation à écoulement forcé par l'emploi de ventilateurs dans les parois ou les fenêtres, par déplacement d'air à travers la paroi ou la fenêtre
A data centre (100) includes at least one rack room (in for example module 140) having a floor and a plurality of rack storage areas on the floor, each rack storage area being arranged to accommodate a plurality of racks (143) in which a plurality of rack-mountable electronic components may be housed, one or more controllable air circulation systems (in for example module 122), one or more cold aisles (144) in the rack room, each cold aisle being adjacent to a rack storage area, and one or more hot aisles (145) in the rack room, each hot aisle being adjacent to a rack storage area. There may be a large air duct, in the form of a personnel corridor (123), for transporting, under the control of the one or more air circulation systems, cooling air, above the floor, to the one or more cold aisles. The air supply corridor/duct (123) may have a height greater than 1.5m above the floor and a cross-sectional area of at least 2m2 and a maximum dimension in the plane of the cross-section of less than 3m.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
E04H 5/02 - Bâtiments ou groupes de bâtiments à des fins industrielles, p. ex. pour centrales énergétiques ou usines
F24F 7/013 - Ventilation à écoulement forcé par l'emploi de ventilateurs dans les parois ou les fenêtres, par déplacement d'air à travers la paroi ou la fenêtre
brevets
