AU645815B2 - Cooling system for a shelter - Google Patents

Cooling system for a shelter Download PDF

Info

Publication number
AU645815B2
AU645815B2 AU79362/91A AU7936291A AU645815B2 AU 645815 B2 AU645815 B2 AU 645815B2 AU 79362/91 A AU79362/91 A AU 79362/91A AU 7936291 A AU7936291 A AU 7936291A AU 645815 B2 AU645815 B2 AU 645815B2
Authority
AU
Australia
Prior art keywords
air
arrangement
drawn
vent
controllable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU79362/91A
Other versions
AU7936291A (en
Inventor
Kenneth Everard House
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Services Ltd
Original Assignee
Alcatel Australia Ltd
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 Alcatel Australia Ltd filed Critical Alcatel Australia Ltd
Priority to AU79362/91A priority Critical patent/AU645815B2/en
Publication of AU7936291A publication Critical patent/AU7936291A/en
Application granted granted Critical
Publication of AU645815B2 publication Critical patent/AU645815B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • 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
    • H05K7/207—Thermal management, e.g. cabinet temperature control
    • 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
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718—Forced ventilation of a gaseous coolant
    • H05K7/20745—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0006—Control or safety arrangements for ventilation using low temperature external supply air to assist cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Description

b" 45 81
ORIGIAL
.9 0
C.
0* C S 4*
C
S
C S C. C 0 0.* COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952-1969 COMPLETE SPECI FICATION FOR Il IE INVENliON ENTITLED C. *S 9
C.
0e C 6.
5 0 e.g.
"COOING SYSTEM FOR A SHELTER"
*C
o 6
CC..
5* 0 C S
C.
The folhowiig sN tIllent-I isl ['LI (ISCI'Ilt ton Of thiS iflVC1it l1l, il~Uding the C Il tt01(Id o1 PCefrt'rm ig it k flown1 to LI S:- 2 This invention relates to shelters for electronic equipment such as, for example, telecommunications equipment, and in particular to a cooling system for such shelters.
Such shelters are known, and are usually constructed and fitted out on site and include a mains powered air-conditioning system to control both temperature and humidity within the shelter. In order to protect high power density telecommunication equipment housed within the shelter from overheating during any period when the air-conditioning system fails, such as in the event of a mains power failure, special provi,,on is made such as making the shelter thermally massive or including heat absorbing material.
In addition to protecting telecommunication equipme,-, the air-conditioning also protects the secondary batteries which are housed in the shelter for providing stand-by power for the telecommunication equipment. The lifetime of the batteries decreases rapidly with increased temperature. This is 15 especially true of the modern sealed batteries.
It is an object of the present invention to provide a cooling system for a shelter of the above mentioned kind which does not require a conventional air-conditioning system or heat storage matrrial.
It is a further object of the present invention to provide a reliable control 20 system for monitoring and controlling the cooling system.
According to tne present invention there is provided a method of cooling a •o shelter for electronic equipment, said method comprising the steps of drawing air into the interior of the shelter with a controllable fan means, impelling the so drawn air into a duct means arranged to convey the impelled air to predetermined parts of the interior, monitoring the humidity of said drawn air, and in the event of the said humidity rising above a predetermined value, mix the drawn air with warmed air from the interior of the shelter to reduce said humidity.
In order that the invention may be readily carried into effect, an emhodiment thereof will now be described in relation to the drawings, in which: Figure 1 is a plan view of the shelter of the present invention.
Figure 2 is a side view of the shelter shwn il, Figure 1, illustrating the cooling system.
Figure 3 is block diagram of the control unit for controlling the fans in the shelter show:i in Figures 1 and 2.
Referring to Figures 1 and 2, the shelter 1 is a relatively lightweight structure of expanded polystyrene sandwich mounted on a substantial chassis (not shown) for portability. Preferably, the shelter has the same base dimensions as a standard shipping container.
The shelter 1 is divided into three compartments A, B and C.
Compartment A contains power equipment, including rectifier, main distributing frame (MDF) and a test desk; compartment B, accessible through door 2, contains switching and transmission equipment, and microprocessor based fan control unit; and compartment C, accessible through an external door 3, contains a toilet and a ventilation unit 4 in a separate chamber. The ventilation unit 4 contains fans (not shown) four of which are inlet fans; and the remaining two are recirculation fans.
15 Referring to Figure 2, external air is drawn in through inlet louvre filtered in air filter 6 and forced under the false floor 7 by at least one of the inlet fans 8. This provides cooling air directly to the switching and transmission equipment in compartment B via a vent 9 and to the rectifier in compartment A via vent 20 If the humidity of the external air drawn in rises above 70%, a second S mode of cooling is brought into operation by the fan control unit. The two Srecirculating fans, one of which 11 is shown, are turned on and draw" warm air from the shelter interior via vent 12 to mix with the air drawn through louvre This warms the air forced under false floor 7, lowering its relative humidity. A rise of 4°C lowers the relative humidity by more than In a second embodiment the recirculating fans (10) are omitted and vent I I is replaccd by at least two normally c! I electro/mcchanicallv activated dlampers (not shown) whose actuators are respeci controlled by the Saidl microprocessor based control unit. When ihe humidity of the external air drawn in rises to between 60%1 and 75% one damper is caused to open dy the control unit. If the humidity rises above 80% the other damper is also caused to be opcned by the control unit. Warm air from the shelter interior is drawn throuIgh the opene- d (nlmper/s by the force of inlet fans 8 and mixed with the air drawn through louvre 5 thercby warming the air forced under false floor 7 and lowering its relative hLumidity. The d0ampers a ie prcf- 10 crably closed by a spring means when the control unit deactivates the actuaiors.
*Referring to Figure 3, each fan has a separat confrlIler, which is controlled from thile processor by a main bus. This bus is also used by the processor to interface two sensor units which monitor the following pa rameteis: underflonor tem pceratu re underfloor relative humidity underfloor airflow detection internal shelter temperature ambient temperature inlet air filter pressure 20 The processor reads these parameters and chooses the optiun m fan combinfation for the current conditions. Under normal moderate conditions, only one or two inlet fans need to be operational. Additional inlet fans arc activated as the anmbient tenmperature increases. The recirculation fa ns,/da im pers are activated one at a time as the relative humidity rises.
In addition to the fa n control, thile contmol processor pierfoirm a numiher of other functions. It periodically rotateM fan usage, cornpares the readings of duplicated sensors and performs a number of checks to verify correct operation of the system.
Any abnormalities are reported as alarms.
The control processor also has the provision for interfacing a remot Telecommunication Management Network (TMN) via a data interface. This allows the possibility of remote supervision of the shclcter cooling system, with detailed information available on any abnormality.
The sensor units also generate alarms for: high tempe rature high humidity no cooling air processor control unit failure Should any of these conditions occur, the sensor units control the fan/damper operation directly via a separate auxiliary bus. If the sensor units lose power or are removed, or generate any of the above mentioned alarms conditions, all fans are activated by the absence of signal on the auxiliary bus.
This provides a failsafe system.
Only three of the four inlet fans are required for maximum inlet air flow for worst case conditions. Similarly, adequate humidity reduction can be achieved by using only one of the two recirculation fans/dampers.
Fan or damper failure is detected by the underfloor airflow detection :11 monitcs associated with the sensor units which extend a signal to the control processor via the main bus.
iI While the present invention has been described with regard to many 1 5 particulars, it is understood that equivalents may be readily substituted without departing from the scope of the invention.
*o .4 co•..
ii e

Claims (19)

1. A method of cooling a shelter for electronic eiuipment, said method comprising the steps of drawing air into the interior o shelter with a controllable fan means, impelling the so drawn air into a duct means arranged to convey the impelled air to predetermined parts of the interior, monitor;ng the humidity of said drawn air, and in the event of the said humidity rising above a predetermined value, mix the drawn air with warmed air from the interior of the shelter to reduce said humidity.
2. A shelter cooling arrangement for carrying out the method as claimed in claim 1, comprising an enclosure having at least a first interior compartment for containing electronic equipment, and a second interior compartment separated 11 by an internal wall, said second compartment containing a first vent means communicating with the exterior of said enclosure, and controllable fan means arranged to draw air through said first vent means and impel the drawn air via 15 ducting means into said first interior compartment to cool said electronic equipment, said second interior compartment further including controllable air recirculating means for controllably drawing air from the first interior eo compartment and mixing the so dawn air with air drawn through said first vent means when humidity of said air drawn through said first vent means rises S 20 above a predetermined level.
3. An arrangement as claimed in claim 2, wherein said controllable fan means comprises a plurality of individually controllable fans.
4. An arrangement as claimed in claim 2 or 3, wherein said controllable air recirculating means comprises at least one controllable fan arranged to draw air from said first interior compartment via a second vent means in said internal wall.
An arrangement as claimed in claim 2 or 3, wherein said controllable air recirculating means comprises at least one controllable damper means arranged such that when opened, air from said first interior compartment is drawn therethrough by said controllable fan means.
6. An arrangerlent as claimed in any one of claims 2 to 5, wherein said first vent means includes air filter means.
7. An arrangement as claimed in any one of claims 2 to 6, where said t A' V( 7 ducting means is formed at least partly by a space between a false floor associated with said first interior compartment and part of said enclosure's floor, said false floor containing at least one third vent means communicating with the interior of said first interior compartment.
8. An arrangement as claimed in any one of claims 2 to 7, including a programmable control unit means for controlling the operation of said fan means and recirculating means in accordance with predetermined parameters sensed by a plurality of sensing means coupled to said control unit.
9. An arrangement as claimed in claim 8, wherein said parameters include relative humidity of air drawn through said first vent means, temperature in ducting means, ambient temperature and air-flow in ducting means. An arrangement as claimed in claim 9 as appended to claim 3, wherein said control unit means activates one or more fans depending upon the magnitude of the ambient temperature sensed by temperature sensing means.
S 15
11. An arrangement as claimed in claim 9 or 10 as appended to claim 4, wherein said control unit means activates one or more recirculating fans i depending upon the sensed magnitude of the relative humidity of said air drawn through said first vent means.
12. An arrangement as claimed in claim 9 or 10 as appended to claim S 20 wherein said control unit means activates one or more said dampers depending Supon the sensed magnitude of the relative humidity of said air drawn through l said first vent means.
13. An arrangement as claimed in any one of claims 2 to 12, including interface means for operatively interfacing said cortrol unit with remote supervisory means.
14. An arrangement as claimed in any one of claims 9 to 13, wherein said control unit is programmed to periodically rotate fan usage.
An arrangement as claimed in any one of claims 8 to 14, wherein said sensing means includes means for generating alarm signals in the event of predetermined alarm conditions.
16. An arrangement as claimed in claim 15, wherein a generated alarm signal causes said control unit means to activate all said fan means to provide a fail-safe operation.
17. An arrangement as claimed in any one of claims 8 to 16, wherein said control unit means comprises a processor coupled via a bus means to at least one sensor unit, the controller unit means also including controller means for controlling respective fans and dampers.
18. An arrangement as claimed in claim 17, wherein said sensor unit is duplicated.
19. An arrangement as claimed in any one of claims 2 to 18, including a third interior compartment having a third vent means coupled to said ducting means. A shelter cooling arrangement substantially as herein described with reference to Figures 1 3 of the accompanying drawings. a a r DATED THIS FOURTH DAY OF NOVEMBER 1993 ALCATEL AUSTRALIA LIMITED a S a V f' ~iJ j
AU79362/91A 1990-07-06 1991-06-26 Cooling system for a shelter Ceased AU645815B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU79362/91A AU645815B2 (en) 1990-07-06 1991-06-26 Cooling system for a shelter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPK1026 1990-07-06
AUPK102690 1990-07-06
AU79362/91A AU645815B2 (en) 1990-07-06 1991-06-26 Cooling system for a shelter

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU49060/93A Division AU660237B2 (en) 1990-07-06 1993-10-18 Battery temperature stabilization

Publications (2)

Publication Number Publication Date
AU7936291A AU7936291A (en) 1992-01-09
AU645815B2 true AU645815B2 (en) 1994-01-27

Family

ID=25639257

Family Applications (1)

Application Number Title Priority Date Filing Date
AU79362/91A Ceased AU645815B2 (en) 1990-07-06 1991-06-26 Cooling system for a shelter

Country Status (1)

Country Link
AU (1) AU645815B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2507822B (en) * 2012-11-13 2016-06-29 Caterpillar (Ni) Ltd Critical power module enclosure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174409A (en) * 1985-04-26 1986-11-05 Int Fuel Cells Corp Method of making an anode containing nico2o4 catalyst for the electrolysis of potassium hydroxide solutions
US4872397A (en) * 1988-11-28 1989-10-10 Johnson Service Company Personal environmental module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174409A (en) * 1985-04-26 1986-11-05 Int Fuel Cells Corp Method of making an anode containing nico2o4 catalyst for the electrolysis of potassium hydroxide solutions
US4872397A (en) * 1988-11-28 1989-10-10 Johnson Service Company Personal environmental module

Also Published As

Publication number Publication date
AU7936291A (en) 1992-01-09

Similar Documents

Publication Publication Date Title
US8313038B2 (en) Telecom shelter cooling and control system
JP3142812B2 (en) Circuit cabinet with central controller
CA2415526C (en) Back-up dc vent system for equipment enclosure
US7895855B2 (en) Closed data center containment system and associated methods
EP2059105B1 (en) System and method for climate control
US6104003A (en) Electronics cabinet cooling system
EP2156127B1 (en) An integrated active cooled cabinet/rack for electronic equipments
AU2004301898B2 (en) Circulation and external venting unit
US6123266A (en) Cooling system for stand-alone battery cabinets
EP1473620A2 (en) Computer Cabinet
US20080316038A1 (en) Detection of air filter clogging and provision of emergency ventilation in an outdoor electronics cabinet cooled by ambient forced air
WO2010103293A1 (en) Equipment enclosure
US10451295B2 (en) Equipment enclosure with multi-mode temperature control system
US20150276249A1 (en) Fresh air cooling device
GB2172094A (en) An outdoor unit for an air conditioning apparatus of a through-the-wall multitype
AU645815B2 (en) Cooling system for a shelter
US20220408604A1 (en) Systems and methods for cooling in power distribution centers
CN209151458U (en) A kind of modular data center system for building
WO2001009555A1 (en) Modular air handling system and method for providing humidity and pressure control
NZ238823A (en) Telecommunications shelter cooled normally by forced fresh air, and by a mixture of fresh and recirculated air when humidity rises
CN106839210A (en) A kind of building-member type data center machine room air-conditioning
Allen The development of high reliability modular cooling system in British Telecom
KR100376656B1 (en) Electric fan device for sensing indoor temperature of vehicle
JPH07122509B2 (en) Controller for engine heat pump
JPH04315498A (en) Method of cooling electronic device

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired