WO1995017805A1 - A method and device for cooling in closed spaces - Google Patents

A method and device for cooling in closed spaces Download PDF

Info

Publication number
WO1995017805A1
WO1995017805A1 PCT/SE1994/001223 SE9401223W WO9517805A1 WO 1995017805 A1 WO1995017805 A1 WO 1995017805A1 SE 9401223 W SE9401223 W SE 9401223W WO 9517805 A1 WO9517805 A1 WO 9517805A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
cooling
heat
cabinet
unit
Prior art date
Application number
PCT/SE1994/001223
Other languages
French (fr)
Inventor
Lennart STÅHL
Anders Karström
Original Assignee
Telefonaktiebolaget Lm Ericsson
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
Priority to RU96115254/09A priority Critical patent/RU2145470C1/en
Priority to JP7517357A priority patent/JPH09507001A/en
Priority to EP95904728A priority patent/EP0736243B1/en
Priority to UA96062450A priority patent/UA28020C2/en
Priority to DK95904728T priority patent/DK0736243T3/en
Priority to BR9408362A priority patent/BR9408362A/en
Application filed by Telefonaktiebolaget Lm Ericsson filed Critical Telefonaktiebolaget Lm Ericsson
Priority to AU13297/95A priority patent/AU683122B2/en
Priority to US08/656,294 priority patent/US5671805A/en
Priority to DE69413066T priority patent/DE69413066T2/en
Publication of WO1995017805A1 publication Critical patent/WO1995017805A1/en
Priority to NO962561A priority patent/NO962561D0/en
Priority to FI962534A priority patent/FI962534A/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
    • H05K7/20554—Forced ventilation of a gaseous coolant
    • H05K7/2059—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device

Definitions

  • the present invention relates to a method and a unit for cooling devices that are installed in a closed space, for instance telecommunications equipment.
  • displacement cooling When the same amount of thermal energy is to be transported per unit of time, these two parameters are the reverse: A large amount of air per unit of time is equivalent to a low difference in air temperature; a high temperature difference requires less air per unit of time.
  • displacement cooling The combination of displacement air distribution (distribution of cold air) and natural convection generated when the air is heated and therewith cooling heat-emitting objects is referred to here as displacement cooling.
  • Fig. 1 illustrates a space in which cooling units and cooling equipment according to the invention are installed.
  • Fig. 2a illustrates the movement pattern of supply air in front of a rack cabinet.
  • Fig. 2b illustrates the passage of supply air through the rack, as seen from one side thereof.
  • Fig. 3 shows the layering of warm and cold air in front of and above the cabinet.
  • Fig. 1 shows schematically a cooling unit 1 and equipment 2 to be cooled placed in a space or room 3.
  • the room is assumed to be airtight.
  • the cooling unit 1 is constructed to take in warm air at ceiling level, to cool the air and then to discharge the cooled air at a low speed at floor level.
  • the front surface of the air outlet 4 is large, so as to obtain a low air speed.
  • Return air heated in the room is drawn by suction into a unit intake 5 which is located as close as possible to the ceiling, and is cooled in the unit and returned to the room through the outlet 4, which is located as close to the floor as possible.
  • the cold supply air is distributed at a low speed, i.e. the air disperses into the room to the vicinity of the cabinet in which the heat- generating components to be cooled are located.
  • Cold supply air is now present in front of the cabinet and extends up from the floor to a level immediately beneath the uppermost point of the cabinet.
  • the air will pass along different routes as it is heated, these routes depending on the construction of the cabinet and the equipment housed therein.
  • a common feature, however, is that cold supply air is drawn by suction into the interior of the cabinet and therewith cools the heat-generating components housed therein, while the warm air exits at the top of the cabinet.
  • the exiting warm exhaust air is much warmer than the supply air in front of the rack and is also lighter in weight and will therefore endeavour to lie between the ceiling and the supply air, see Fig. 3.
  • the warm exhaust air also moves at a speed which is sufficiently low to avoid turbulence.
  • the warm air is drawn slowly back into the cooling unit by suction.
  • Fig. 2a illustrates air flowing in front of and into a cabinet. Normally, the front panels of the cabinet are perforated so as to enable supply air to enter the cabinet. Some of the air passes beyond the first cabinet to an adjacent cabinet, and so on.
  • Fig. 2b illustrates supply air passing along the perforated front 6 of the cabinet and in against the heat-generating components 7 located in the cabinet, and then passing upwards through the cabinet.
  • Fig. 2b also shows the routes followed by the air through the cabinet when the heat-generating components are seated on shelves 8. Although not necessary, these shelves may be constructed to guide the heated air towards a chimney means on the rear side of the cabinet. The principle is effective provided that the exhaust air is allowed to rise and to exit on the upper side of the cabinet.
  • the air shall pass in contact with the heat-generating components housed in the cabinet and be heated thereby.
  • the air shall be allowed to exit from the top of the cabinet.
  • Figs. 2a and.2b When following the routes taken by the supply air from the front of the cooling unit up to the location of one of the shelves that support the heat-generating components inside the cabinet, as indicated by the arrows in Figs. 2a and.2b, it is found that the temperature remains unchanged along the whole of the route up to this location.
  • the exhaust air exits from the top of the cabinet.
  • the cold supply air 9 and the warm exhaust air 10 are kept separated from one another.
  • the supply air disperses across the floor, from floor level to a point slightly up in front of the cabinet, whereas exhaust air collects beneath the ceiling.
  • Fig. 3 illustrates the state of the two regions in relation to a cabinet seen from one side, and shows layering of warm and cold air in front of and above the cabinet.
  • the displaced distribution of supply air from the unit and the exit of air from the cabinet with very low turbulence results in two air layers of mutually different temperatures and of low flow rates in mutually different directions, the cold air passing along the floor away from the cooling unit and into the vicinity of all cabinets in the room or space, and warm air flowing along the ceiling away from the cabinet and back to the cooling unit. In turn, this results in the supply air being distributed to all cabinets in the room and being drawn by suction away from all cabinets. In addition, the supply air will have the same temperature in front of all cabinets, provided that the temperature of the supply air exiting from the cooling unit is constant in time. This provides uniform and positive cooling of all cabinets located in the room.
  • the aforedescribed construction also provides a highly efficient system, due to the fact that a large temperature difference between supply air and exhaust air in the unit combined with a relatively high supply air temperature and therewith vapourization temperature increases the efficiency of the compressor circuit, while the low rate of air flow enables relatively small and energy-lean fans to be used.

Abstract

To be able to cool telecommunications equipment in rack cabinets located in closed spaces in an energy-saving way with high operational reliability and little need of maintenance and with few movable parts there has been developed a method and a device, in which displacing air distribution and gravity flow are combined and applied for cooling of said equipment. Cold intake air is distributed at low speed, i.e. it displacingly flows out into a room towards the racks (2). The cold air is then fed to the racks in order to cool heat-producing components placed therein. The heated air is then discharged from the upper side of the racks and is recirculated at low speed so as to avoid turbulence at the intake of the refrigerating machine.

Description

A METHOD AND DEVICE FOR COOLING IN CLOSED SPACES
TECHNICAL FIELD
The present invention relates to a method and a unit for cooling devices that are installed in a closed space, for instance telecommunications equipment.
DESCRIPTION OF THE BACKGROUND ART
It is known that the principle of natural convection can be applied to cool vertical surfaces by heating a cold medium to a lower density, wherewith underlying cold medium of higher density will force away the heated medium, causing it to rise. It is also known to distribute air by applying so- called air displacement flow principles. This type of flow functions in accordance with principles that are similar to the principle of natural convection, namely that cold air is heavier than warm air and will therefore take the lowest possible level. When the cold air is released immediately above a floor surface, the cold air will fall down onto the floor and force away air of higher temperature. It is usual to say that the cold air "runs out over the floor". One condition in this respect is that the air speed is low enough not to generate turbulence. Turbulence would cause the cold air to mix with ambient air and the resultant air flow would no longer be a displacing air flow.
SUMMARY OF THE INVENTION
With the intention of cooling telecommunications equipment in rack cabinets installed in closed spaces in an energy- saving manner with high operational reliability and little need of maintenance and with few movable parts, there has been developed a method and a unit for cooling telecommuni¬ cations equipment installed in rack cabinets placed in closed spaces. The two principles earlier mentioned have been combined and have been applied in apparatus rooms in which cooling of equipment installed therein is necessary. When cooling and heating air, the amount of thermal energy that can be transported via the air per unit of time is determined primarily by two parameters, vis
- the amount of air cooled (or heated) per unit of time; and the drop (rise) in air temperature.
When the same amount of thermal energy is to be transported per unit of time, these two parameters are the reverse: A large amount of air per unit of time is equivalent to a low difference in air temperature; a high temperature difference requires less air per unit of time. The combination of displacement air distribution (distribution of cold air) and natural convection generated when the air is heated and therewith cooling heat-emitting objects is referred to here as displacement cooling.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 illustrates a space in which cooling units and cooling equipment according to the invention are installed.
Fig. 2a illustrates the movement pattern of supply air in front of a rack cabinet.
Fig. 2b illustrates the passage of supply air through the rack, as seen from one side thereof.
Fig. 3 shows the layering of warm and cold air in front of and above the cabinet.
BEST MODE OF CARRYING OUT THE INVENTION
Fig. 1 shows schematically a cooling unit 1 and equipment 2 to be cooled placed in a space or room 3. The room is assumed to be airtight. The cooling unit 1 is constructed to take in warm air at ceiling level, to cool the air and then to discharge the cooled air at a low speed at floor level. The front surface of the air outlet 4 is large, so as to obtain a low air speed. Return air heated in the room is drawn by suction into a unit intake 5 which is located as close as possible to the ceiling, and is cooled in the unit and returned to the room through the outlet 4, which is located as close to the floor as possible. The cold supply air is distributed at a low speed, i.e. the air disperses into the room to the vicinity of the cabinet in which the heat- generating components to be cooled are located. Cold supply air is now present in front of the cabinet and extends up from the floor to a level immediately beneath the uppermost point of the cabinet.
The air will pass along different routes as it is heated, these routes depending on the construction of the cabinet and the equipment housed therein. A common feature, however, is that cold supply air is drawn by suction into the interior of the cabinet and therewith cools the heat-generating components housed therein, while the warm air exits at the top of the cabinet. The exiting warm exhaust air is much warmer than the supply air in front of the rack and is also lighter in weight and will therefore endeavour to lie between the ceiling and the supply air, see Fig. 3. The warm exhaust air also moves at a speed which is sufficiently low to avoid turbulence. The warm air is drawn slowly back into the cooling unit by suction.
Fig. 2a illustrates air flowing in front of and into a cabinet. Normally, the front panels of the cabinet are perforated so as to enable supply air to enter the cabinet. Some of the air passes beyond the first cabinet to an adjacent cabinet, and so on. Fig. 2b illustrates supply air passing along the perforated front 6 of the cabinet and in against the heat-generating components 7 located in the cabinet, and then passing upwards through the cabinet. Fig. 2b also shows the routes followed by the air through the cabinet when the heat-generating components are seated on shelves 8. Although not necessary, these shelves may be constructed to guide the heated air towards a chimney means on the rear side of the cabinet. The principle is effective provided that the exhaust air is allowed to rise and to exit on the upper side of the cabinet. Neither is a perforated front absolutely necessary. However, it must be possible for supply air to enter the lower part of the cabinet structure in order to come into contact with the heat-generated components. Fans may also be mounted in the cabinet for the purpose of drawing in the cold supply air. In summary, three requirements are placed on the cabinet construction:
- Supply air shall be able to enter through the front or through the bottom of the cabinet.
The air shall pass in contact with the heat-generating components housed in the cabinet and be heated thereby.
The air shall be allowed to exit from the top of the cabinet.
When following the routes taken by the supply air from the front of the cooling unit up to the location of one of the shelves that support the heat-generating components inside the cabinet, as indicated by the arrows in Figs. 2a and.2b, it is found that the temperature remains unchanged along the whole of the route up to this location. The exhaust air exits from the top of the cabinet. The cold supply air 9 and the warm exhaust air 10 are kept separated from one another. The supply air disperses across the floor, from floor level to a point slightly up in front of the cabinet, whereas exhaust air collects beneath the ceiling. Fig. 3 illustrates the state of the two regions in relation to a cabinet seen from one side, and shows layering of warm and cold air in front of and above the cabinet.
The displaced distribution of supply air from the unit and the exit of air from the cabinet with very low turbulence results in two air layers of mutually different temperatures and of low flow rates in mutually different directions, the cold air passing along the floor away from the cooling unit and into the vicinity of all cabinets in the room or space, and warm air flowing along the ceiling away from the cabinet and back to the cooling unit. In turn, this results in the supply air being distributed to all cabinets in the room and being drawn by suction away from all cabinets. In addition, the supply air will have the same temperature in front of all cabinets, provided that the temperature of the supply air exiting from the cooling unit is constant in time. This provides uniform and positive cooling of all cabinets located in the room.
The aforedescribed construction also provides a highly efficient system, due to the fact that a large temperature difference between supply air and exhaust air in the unit combined with a relatively high supply air temperature and therewith vapourization temperature increases the efficiency of the compressor circuit, while the low rate of air flow enables relatively small and energy-lean fans to be used.

Claims

1. A method for cooling devices such as the heat-generating components of telecommunications equipment located in a closed space, characterized by placing in the closed space a cooling unit (1) which functions to generate a so-called displacing flow of cool air at low speed in the bottom region of the space such as to achieve contact of said air with the devices to be cooled, wherein the cooling unit (1) receives in the vicinity of the upper region of the space air that has been heated by the heat-generating components, and wherein the heat-generating components are contacted with the cooling air from beneath and the heated air exits from above.
2. A unit for cooling devices such as heat-generating components of telecommunications equipment located in a closed space, characterized in that the cooling unit (1) is installed in said closed space; in that the cooling unit (1) is intended to deliver a so-called displacing cold air flow at a low speed in the bottom region of the space such as to cool said devices; in that the cooling unit (1) is con¬ structed to receive air heated by the cooled heat-generating devices in the upper region of the space at a low speed, wherein the heat-generating devices are cooled by cold air which enters from beneath and the heated air exits from above.
3. A unit according to Claim 2, characterized by a cold air outlet (4) at the bottom of the cooling unit (1), and by a heated air intake (5) at the top of said unit.
4. A unit according to Claim 2, characterized in that the heat-generating devices (2) to be cooled are provided with shelves (8) which function to guide the heated air flow.
PCT/SE1994/001223 1993-12-22 1994-12-19 A method and device for cooling in closed spaces WO1995017805A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP7517357A JPH09507001A (en) 1993-12-22 1994-12-19 Method and device for cooling in an enclosed space
EP95904728A EP0736243B1 (en) 1993-12-22 1994-12-19 A method and device for cooling in closed spaces
UA96062450A UA28020C2 (en) 1993-12-22 1994-12-19 РПаЎ±б
DK95904728T DK0736243T3 (en) 1993-12-22 1994-12-19 Method and device for cooling in confined spaces
BR9408362A BR9408362A (en) 1993-12-22 1994-12-19 Process and unit for cooling devices such as the heat-generating components of telecommunications equipment located in an enclosed space
RU96115254/09A RU2145470C1 (en) 1993-12-22 1994-12-19 Method and device for cooling equipment in enclosed locations
AU13297/95A AU683122B2 (en) 1993-12-22 1994-12-19 A method and device for cooling in closed spaces
US08/656,294 US5671805A (en) 1993-12-22 1994-12-19 Method and device for cooling in closed spaces
DE69413066T DE69413066T2 (en) 1993-12-22 1994-12-19 METHOD AND DEVICE FOR COOLING CLOSED ROOMS
NO962561A NO962561D0 (en) 1993-12-22 1996-06-17 Method and apparatus for cooling in confined spaces
FI962534A FI962534A (en) 1993-12-22 1996-06-18 Method and apparatus for enclosure cooling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9304264-6 1993-12-22
SE9304264A SE9304264L (en) 1993-12-22 1993-12-22 Method and apparatus for cooling in closed rooms

Publications (1)

Publication Number Publication Date
WO1995017805A1 true WO1995017805A1 (en) 1995-06-29

Family

ID=20392192

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1994/001223 WO1995017805A1 (en) 1993-12-22 1994-12-19 A method and device for cooling in closed spaces

Country Status (18)

Country Link
US (1) US5671805A (en)
EP (1) EP0736243B1 (en)
JP (1) JPH09507001A (en)
CN (1) CN1139510A (en)
AT (1) ATE170702T1 (en)
AU (1) AU683122B2 (en)
BR (1) BR9408362A (en)
CA (1) CA2177579A1 (en)
DE (1) DE69413066T2 (en)
DK (1) DK0736243T3 (en)
ES (1) ES2123233T3 (en)
FI (1) FI962534A (en)
HU (1) HU217398B (en)
NO (1) NO962561D0 (en)
RU (1) RU2145470C1 (en)
SE (1) SE9304264L (en)
UA (1) UA28020C2 (en)
WO (1) WO1995017805A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728306C2 (en) * 1997-07-03 2000-04-13 Lucent Tech Network Sys Gmbh Method and arrangement for cooling heat generating devices

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE511417C2 (en) * 1997-02-04 1999-09-27 Telia Ab Method and apparatus for cooling electronics / computer equipment and their use
US6131647A (en) * 1997-09-04 2000-10-17 Denso Corporation Cooling system for cooling hot object in container
US6158454A (en) * 1998-04-14 2000-12-12 Insync Systems, Inc. Sieve like structure for fluid flow through structural arrangement
US6574970B2 (en) * 2000-02-18 2003-06-10 Toc Technology, Llc Computer room air flow method and apparatus
US6557357B2 (en) 2000-02-18 2003-05-06 Toc Technology, Llc Computer rack heat extraction device
US6412292B2 (en) * 2000-05-09 2002-07-02 Toc Technology, Llc Computer rack heat extraction device
EP1258182A4 (en) * 2000-02-18 2008-12-17 Rtkl Associates Inc Computer rack heat extraction device
EP1334326A4 (en) * 2000-08-23 2009-03-25 Toc Technology Llc Computer room air flow method and apparatus
US6506111B2 (en) 2001-05-16 2003-01-14 Sanmina-Sci Corporation Cooling airflow distribution device
US6644384B2 (en) * 2001-09-21 2003-11-11 Liebert Corporation Modular low profile cooling system
GB0207382D0 (en) * 2002-03-28 2002-05-08 Holland Heating Uk Ltd Computer cabinet
US6668565B1 (en) 2002-04-12 2003-12-30 American Power Conversion Rack-mounted equipment cooling
US7046514B2 (en) 2003-03-19 2006-05-16 American Power Conversion Corporation Data center cooling
US6859366B2 (en) 2003-03-19 2005-02-22 American Power Conversion Data center cooling system
US7074123B2 (en) * 2004-01-13 2006-07-11 Power Of 4, L.L.C. Cabinet for computer devices with air distribution device
US7266964B2 (en) * 2004-03-04 2007-09-11 Sun Microsystems, Inc. Data center room cold aisle deflector
WO2006055387A1 (en) * 2004-11-14 2006-05-26 Liebert Corporation Integrated heat exchanger(s) in a rack for vertical board style computer systems
US7259963B2 (en) * 2004-12-29 2007-08-21 American Power Conversion Corp. Rack height cooling
US7841199B2 (en) 2005-05-17 2010-11-30 American Power Conversion Corporation Cold aisle isolation
US11212928B2 (en) 2005-09-19 2021-12-28 Chatsworth Products, Inc. Vertical exhaust duct for electronic equipment enclosure
US11259446B2 (en) 2005-09-19 2022-02-22 Chatsworth Products, Inc. Vertical exhaust duct for electronic equipment enclosure
US8107238B2 (en) 2005-09-19 2012-01-31 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US20070064389A1 (en) * 2005-09-19 2007-03-22 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US7804685B2 (en) 2005-09-19 2010-09-28 Chatsworth Products, Inc. Ducted exhaust equipment enclosure
US7542287B2 (en) 2005-09-19 2009-06-02 Chatsworth Products, Inc. Air diverter for directing air upwardly in an equipment enclosure
US7438638B2 (en) * 2005-10-10 2008-10-21 Chatsworth Products, Inc. Ratio of open area to closed area in panels for electronic equipment enclosures
EP1937434B1 (en) 2005-10-18 2023-12-06 Swimc Llc Coating compositions for containers and methods of coating
US8257155B2 (en) * 2006-01-20 2012-09-04 Chatsworth Products, Inc. Selectively routing air within an electronic equipment enclosure
US20070171610A1 (en) * 2006-01-20 2007-07-26 Chatsworth Products, Inc. Internal air duct
US7681410B1 (en) 2006-02-14 2010-03-23 American Power Conversion Corporation Ice thermal storage
US8764528B2 (en) * 2006-04-27 2014-07-01 Wright Line, Llc Systems and methods for closed loop heat containment with cold aisle isolation for data center cooling
US7604535B2 (en) 2006-04-27 2009-10-20 Wright Line, Llc Assembly for extracting heat from a housing for electronic equipment
US20090239460A1 (en) * 2006-04-27 2009-09-24 Wright Line, Llc Assembly for Extracting Heat from a Housing for Electronic Equipment
US20080035810A1 (en) * 2006-08-12 2008-02-14 Chatsworth Products, Inc. Offset brackets for expanding electronic equipment cabinets
US20080216493A1 (en) * 2007-03-08 2008-09-11 Liebert Corporation Microchannel cooling condenser for precision cooling applications
WO2008144678A1 (en) * 2007-05-17 2008-11-27 Chatsworth Products, Inc. Electronic equipment enclosure with exhaust air duct and adjustable filler panel assemblies
US7430118B1 (en) * 2007-06-04 2008-09-30 Yahoo! Inc. Cold row encapsulation for server farm cooling system
US8320125B1 (en) 2007-06-29 2012-11-27 Exaflop Llc Modular data center cooling
US7886983B2 (en) * 2007-07-10 2011-02-15 Liebert Corporation Condensation prevention system and methods of use
US20090056348A1 (en) * 2007-08-01 2009-03-05 Liebert Corporation Motorized ball valve control system for fluid cooled heat exchanger
US20090031735A1 (en) * 2007-08-01 2009-02-05 Liebert Corporation System and method of controlling fluid flow through a fluid cooled heat exchanger
US20090061755A1 (en) * 2007-08-28 2009-03-05 Panduit Corp. Intake Duct
US9681587B2 (en) * 2007-08-30 2017-06-13 Pce, Inc. System and method for cooling electronic equipment
US7974105B2 (en) 2008-01-07 2011-07-05 Chatsworth Products, Inc. Apparatus and method for organizing cables in a cabinet
US10133320B2 (en) * 2008-02-14 2018-11-20 Chatsworth Products, Inc. Air directing device
US8783336B2 (en) * 2008-12-04 2014-07-22 Io Data Centers, Llc Apparatus and method of environmental condition management for electronic equipment
EP2205054A1 (en) * 2009-01-05 2010-07-07 Chatsworth Product, INC. Electronic equipment enclosure with side-to-side airflow control system
US20100248609A1 (en) * 2009-03-24 2010-09-30 Wright Line, Llc Assembly For Providing A Downflow Return Air Supply
US9210833B2 (en) * 2009-03-30 2015-12-08 Panduit Corp. Adjustable vertical exhaust duct
US8054625B2 (en) * 2009-04-21 2011-11-08 Yahoo! Inc. Cold row encapsulation for server farm cooling system
US7800900B1 (en) 2009-04-21 2010-09-21 Yahoo! Inc. Cold row encapsulation for server farm cooling system
US10212858B2 (en) 2009-04-21 2019-02-19 Excalibur Ip, Llc Cold row encapsulation for server farm cooling system
GB2467808B (en) * 2009-06-03 2011-01-12 Moduleco Ltd Data centre
US8973951B2 (en) * 2009-07-02 2015-03-10 Panduit Corp. Adjustable vertical exhaust duct
US20110009047A1 (en) * 2009-07-09 2011-01-13 Yahoo! Inc. Integrated Building Based Air Handler for Server Farm Cooling System
CN101963378A (en) * 2009-11-04 2011-02-02 阿尔西制冷工程技术（北京）有限公司 Data center hot spot air-conditioning refrigeration system
US8701737B2 (en) 2009-11-09 2014-04-22 LDM Products, Inc Retractable computer rack aisle roof
US8653363B2 (en) 2010-06-01 2014-02-18 Chatsworth Products, Inc. Magnetic filler panel for use in airflow control system in electronic equipment enclosure
US9655259B2 (en) 2011-12-09 2017-05-16 Chatsworth Products, Inc. Data processing equipment structure
RU2474889C1 (en) * 2011-08-12 2013-02-10 Открытое акционерное общество "СИТРОНИКС" Closed system of heat-dissipating equipment cooling
US9839155B2 (en) 2012-05-16 2017-12-05 Panduit Corp. Thermal ducting system
NO335327B1 (en) * 2012-12-03 2014-11-17 Helge Gallefoss Device for passive cooling of electronic equipment and power supply for a collection of a plurality of data units
TWI499171B (en) * 2013-08-09 2015-09-01 Delta Electronics Inc Method of air flow field control
US9943011B2 (en) 2014-09-10 2018-04-10 Panduit Corp. Cooling control for data centers with cold aisle containment systems
US10375864B2 (en) 2017-08-07 2019-08-06 Panduit Corp. Airflow control in data centers utilizing hot aisle containment
DE102018214598A1 (en) * 2018-08-29 2020-03-05 Robert Bosch Gmbh Assembly for an environmental sensor, lidar sensor and means of transportation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535386A (en) * 1983-05-23 1985-08-13 Allen-Bradley Company Natural convection cooling system for electronic components

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU984088A1 (en) * 1980-02-01 1982-12-23 Предприятие П/Я А-3162 Cabinet for cooling radioelectronig apparatus
JPS60119763A (en) * 1983-11-30 1985-06-27 Mitsubishi Electric Corp Semiconductor device
JPS61198799A (en) * 1985-02-28 1986-09-03 株式会社東芝 Connectable box construction
JPH0541560Y2 (en) * 1986-12-04 1993-10-20
JP2829170B2 (en) * 1991-12-06 1998-11-25 株式会社東芝 Rack mount method
GB2270117A (en) * 1992-08-20 1994-03-02 Ibm Laminar flow fan and apparatus incorporating such a fan.
US5477417A (en) * 1992-08-28 1995-12-19 Kabushiki Kaisha Toshiba Electronic equipment having integrated circuit device and temperature sensor
JPH0694652A (en) * 1992-09-16 1994-04-08 Rigaku Corp Sample heater for x-ray device
JPH09171148A (en) * 1995-12-20 1997-06-30 Furukawa Electric Co Ltd:The Pressing mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535386A (en) * 1983-05-23 1985-08-13 Allen-Bradley Company Natural convection cooling system for electronic components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728306C2 (en) * 1997-07-03 2000-04-13 Lucent Tech Network Sys Gmbh Method and arrangement for cooling heat generating devices

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RU2145470C1 (en) 2000-02-10
EP0736243B1 (en) 1998-09-02
UA28020C2 (en) 2000-10-16
DE69413066D1 (en) 1998-10-08
DE69413066T2 (en) 1999-03-11
FI962534A0 (en) 1996-06-18
HUT74631A (en) 1997-01-28
FI962534A (en) 1996-06-18
ATE170702T1 (en) 1998-09-15
CA2177579A1 (en) 1995-06-29
JPH09507001A (en) 1997-07-08
BR9408362A (en) 1997-08-26
SE9304264L (en) 1995-06-23
US5671805A (en) 1997-09-30
NO962561L (en) 1996-06-17
NO962561D0 (en) 1996-06-17
SE9304264D0 (en) 1993-12-22
ES2123233T3 (en) 1999-01-01
EP0736243A1 (en) 1996-10-09
AU1329795A (en) 1995-07-10
HU217398B (en) 2000-01-28
DK0736243T3 (en) 1999-06-07
CN1139510A (en) 1997-01-01
AU683122B2 (en) 1997-10-30

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