EP1466413A1 - Antenna and ground cooler - Google Patents

Antenna and ground cooler

Info

Publication number
EP1466413A1
EP1466413A1 EP02792166A EP02792166A EP1466413A1 EP 1466413 A1 EP1466413 A1 EP 1466413A1 EP 02792166 A EP02792166 A EP 02792166A EP 02792166 A EP02792166 A EP 02792166A EP 1466413 A1 EP1466413 A1 EP 1466413A1
Authority
EP
European Patent Office
Prior art keywords
antenna
pipes
heat
base station
radio base
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.)
Withdrawn
Application number
EP02792166A
Other languages
German (de)
French (fr)
Inventor
Jan-Erik Nowacki
Stig Sandström
Börje Jansson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1466413A1 publication Critical patent/EP1466413A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/036—Cooling arrangements

Definitions

  • a cooling method and apparatus is intended to cool a radio base station.
  • the invention includes pipes to absorb heat in the antenna, a hot and cold in-ground storage facility, a fan coil to cool the air in the radio base station and an optional refrigeration machine to further secure the cooling function.
  • Heat is emitted from the antenna pipes and the radio base station while it is in use.lf possiblelhe ⁇ ieat should be transferred from the radio base station into the antenna pipes. If the heat cannot be transferred from the base central into the antenna pipes, such heat will instead be transferred into the in-ground storage. Whenever possible, heat will be transferred from both the radio base station and the in-ground storage to the antenna pipes. If both the antenna pipes and the in-ground storage are so hot that no further heat can be absorbed, the optional refrigeration machine raises the temperature of the emitted heat, to enable cooling either through the antenna pipes or the in-ground storage device.
  • the main components, antenna pipes, in-ground storage device and fan coil in the radio base station are joined by a system of pipes and a control system.
  • the same secondary refrigerant flows through the antenna pipes, in-ground storage device and fan coil.
  • the optional refrigeration machine If the optional refrigeration machine is utilized, its hot side is connected to the secondary refrigerant, brine, while its cold side will extract heat from the radio base station.
  • the secondary refrigerant, brine is typically a glycol-alcohol or salt-water solution, but it can also be some other liquid or gaseous medium.
  • One version of this invention adds the antenna mounted heat-rejecting pipes to an original antenna structure and is only marginally affecting the strength of the antenna. Another version of this invention uses the same pipes to reject the heat and carry antenna loads.
  • One objective of the suggested invention is to minimize the energy and power required to cool the radio base station. Another objective is to make the service of the unit less costly. A third objective is to keep ice from building up on the antenna, which can be accomplished where the same pipes are used in the antenna structure and as heat rejecting pipes.
  • Figure 1 shows how the secondary refrigerant flows through the loop. 1, symbolizes the antenna pipes; 2 symbolizes the cooled radio base station enclosure; 3 symbolizes the in- ground storage device; 4 symbolizes the fan coil cooling the air inside the enclosure 2; 5 symbolizes the main brine pump; 6 symbolizes the antenna brine pump; and 7 symbolizes the three way valve.
  • the main brine pump (5) will take its cooling water either from the antenna (1) when the three way valve (7) is in position A; or from the in-ground storage device (3) when the three way valve (7) is in position B.
  • the antenna brine pump (6) When additional cooling capacity is available through the antenna pipes (1) than is needed in the radio base station enclosure (2), the antenna brine pump (6) is started and the three way valve (7) set in a position to enable fluid to go from A to B and from A to the main brine pump (5).
  • the in-ground storage device is ⁇ then cooled. If the antenna pipes (1) are unable to provide sufficient cooling power to the radio base station enclosure (2), the brine is mixed in the three way valve (7) drawing from the cooling capacity of the in-ground storage device.
  • FIG 2 the brine loop is shown. Most components are identical and function in the same manner as in figure 1.
  • the refrigeration machine (8) is used to cool the radio base station enclosure (2) by circulating air through the evaporator (9) during times when both the in- ground storage device (3) and the antenna pipes (1) have reached their capacity and are unable to supply the radio base station enclosure (2) with sufficient cooling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

An invention cooling a radio base station by using heat exchanging pipes mounted in the antenna. Excess cooling power can be stored in an in-ground storage device adjacent to the radio base station and used during periods of peak temperatures. Primarily cooling power can be generated at night and stored in the in-ground storage device, and used during the day.

Description

BACKGROUND OF THE INVENTION
ANTENNA AND GROUND COOLER
A cooling method and apparatus according to this invention is intended to cool a radio base station. The invention includes pipes to absorb heat in the antenna, a hot and cold in-ground storage facility, a fan coil to cool the air in the radio base station and an optional refrigeration machine to further secure the cooling function. Heat is emitted from the antenna pipes and the radio base station while it is in use.lf possiblelhe±ieat should be transferred from the radio base station into the antenna pipes. If the heat cannot be transferred from the base central into the antenna pipes, such heat will instead be transferred into the in-ground storage. Whenever possible, heat will be transferred from both the radio base station and the in-ground storage to the antenna pipes. If both the antenna pipes and the in-ground storage are so hot that no further heat can be absorbed, the optional refrigeration machine raises the temperature of the emitted heat, to enable cooling either through the antenna pipes or the in-ground storage device.
According to the invention, the main components, antenna pipes, in-ground storage device and fan coil in the radio base station are joined by a system of pipes and a control system. The same secondary refrigerant flows through the antenna pipes, in-ground storage device and fan coil. If the optional refrigeration machine is utilized, its hot side is connected to the secondary refrigerant, brine, while its cold side will extract heat from the radio base station. The secondary refrigerant, brine, is typically a glycol-alcohol or salt-water solution, but it can also be some other liquid or gaseous medium.
One version of this invention adds the antenna mounted heat-rejecting pipes to an original antenna structure and is only marginally affecting the strength of the antenna. Another version of this invention uses the same pipes to reject the heat and carry antenna loads.
Today, cooling of a radio base station is normally accomplished by a roof-mounted air conditioning system in the building where the base station is located. The primary refrigerant in such an air conditioner is then often a CFC, HCFC or HFC compound. In the air conditioner, the primary refrigerant is initially compressed in a compressor, gives of its heat to the surrounding in a separate condenser, is lead through an expansion valve whereby the temperature drops and is finally routed through an evaporator, extracting the heat from the radio base station. Many of the refrigerants used in ordinary air conditioners have a negative environmental impact, and their use may be prohibited in the future. Ordinary air -conditioners further consume great amounts of electricity and have the externally mounted coils require frequent servicing, particularly in conditions where the air quality is marginal.
A similar idea is also described in US6094929 (WO9933190). In this invention the component to be cooled is located in the top of the antenna and a machine providing cold flui is stationed on the ground. The antenna structure is not used to reject excess heat and no ground heat storage is utilized. WO9960709 describes another similar idea using a thermosiphon. This idea builds on the principle of phase changing media as secondary refrigerant. The condenser that finally rejects the heat to the surrounding is a separate body that is not integrated in the antenna structure. In WOO 180615 a special type of heat exchanger integrated into the wall of the radio base station is described.
OBJECTIVE OF THE INVENTION
One objective of the suggested invention is to minimize the energy and power required to cool the radio base station. Another objective is to make the service of the unit less costly. A third objective is to keep ice from building up on the antenna, which can be accomplished where the same pipes are used in the antenna structure and as heat rejecting pipes.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following text the invention is described with reference to the following figures in which:
Figure 1
Schematically shows a method and apparatus without refrigeration machine, Figure 2
Shows a method and apparatus with a refrigeration machine.
DETAILED DESCRIPTION
Figure 1 shows how the secondary refrigerant flows through the loop. 1, symbolizes the antenna pipes; 2 symbolizes the cooled radio base station enclosure; 3 symbolizes the in- ground storage device; 4 symbolizes the fan coil cooling the air inside the enclosure 2; 5 symbolizes the main brine pump; 6 symbolizes the antenna brine pump; and 7 symbolizes the three way valve. The main brine pump (5) will take its cooling water either from the antenna (1) when the three way valve (7) is in position A; or from the in-ground storage device (3) when the three way valve (7) is in position B. When additional cooling capacity is available through the antenna pipes (1) than is needed in the radio base station enclosure (2), the antenna brine pump (6) is started and the three way valve (7) set in a position to enable fluid to go from A to B and from A to the main brine pump (5). The in-ground storage device is ~ then cooled. If the antenna pipes (1) are unable to provide sufficient cooling power to the radio base station enclosure (2), the brine is mixed in the three way valve (7) drawing from the cooling capacity of the in-ground storage device.
In figure 2 the brine loop is shown. Most components are identical and function in the same manner as in figure 1. The refrigeration machine (8) is used to cool the radio base station enclosure (2) by circulating air through the evaporator (9) during times when both the in- ground storage device (3) and the antenna pipes (1) have reached their capacity and are unable to supply the radio base station enclosure (2) with sufficient cooling.

Claims

Claims
1. A brine based cooling method and apparatus for a radio base station characterized by mounting heat-exchanging pipes in the antenna.
2. A method and apparatus according to 1 characterized by using vertical pipes.
-5— 3. A method and apparatus according to l and 2 characterized by using heat-exchanging - .. pipes as structural part of the antenna.
4. A method and apparatus according to 1 and 2 characterized by using heat-exchanging pipes separate from the antenna structure.
5. A method and apparatus according to 1, 2, 3 or 4 characterized by storing excess cooling 0 power from the heat-exchanging antenna pipes in an in-ground storage device.
6. An in-ground storage device according to 5 consisting of pipes that have been placed in the ground.
7. An in-ground storage device according to 5 consisting of a series of drilled holes.
EP02792166A 2001-12-20 2002-12-20 Antenna and ground cooler Withdrawn EP1466413A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0104322A SE523186C2 (en) 2001-12-20 2001-12-20 Method for cooling radio base stations
SE0104322 2001-12-20
PCT/SE2002/002435 WO2003055089A1 (en) 2001-12-20 2002-12-20 Antenna and ground cooler

Publications (1)

Publication Number Publication Date
EP1466413A1 true EP1466413A1 (en) 2004-10-13

Family

ID=20286422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02792166A Withdrawn EP1466413A1 (en) 2001-12-20 2002-12-20 Antenna and ground cooler

Country Status (4)

Country Link
EP (1) EP1466413A1 (en)
AU (1) AU2002357632A1 (en)
SE (1) SE523186C2 (en)
WO (1) WO2003055089A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040033B (en) * 1979-01-12 1983-03-02 Nippon Electric Co Cooling arrangements
SE511454C2 (en) * 1997-12-22 1999-10-04 Ericsson Telefon Ab L M Device and method for remote cooling of radio transmitters
FR2788335B1 (en) * 1999-01-12 2001-03-09 Setelcom Holding PASSIVE AIR CONDITIONING METHOD AND DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03055089A1 *

Also Published As

Publication number Publication date
WO2003055089A1 (en) 2003-07-03
SE523186C2 (en) 2004-03-30
AU2002357632A1 (en) 2003-07-09
SE0104322L (en) 2003-06-21
SE0104322D0 (en) 2001-12-20

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