EP2116788A2 - Method for using outdoor air to cool room devices - Google Patents

Method for using outdoor air to cool room devices Download PDF

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Publication number
EP2116788A2
EP2116788A2 EP09397511A EP09397511A EP2116788A2 EP 2116788 A2 EP2116788 A2 EP 2116788A2 EP 09397511 A EP09397511 A EP 09397511A EP 09397511 A EP09397511 A EP 09397511A EP 2116788 A2 EP2116788 A2 EP 2116788A2
Authority
EP
European Patent Office
Prior art keywords
cooling
outdoor air
room devices
air
radiator
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Withdrawn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
EP09397511A
Other languages
German (de)
French (fr)
Other versions
EP2116788A3 (en
Inventor
Pekka Mäkinen
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.)
FlaektGroup Sweden AB
Original Assignee
Flaekt Woods AB
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 Flaekt Woods AB filed Critical Flaekt Woods AB
Publication of EP2116788A2 publication Critical patent/EP2116788A2/en
Publication of EP2116788A3 publication Critical patent/EP2116788A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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

Definitions

  • the object of this invention is a method for using outdoor air to cool room devices, e.g. chilled beams.
  • a need for cooling in the indoor spaces of buildings arises typically when the temperature of the outdoor air is high.
  • the colder temperature of the outdoor air is utilized only in inblowing fan air, i.e. air of a low temperature, e.g. 15 °C, is blown inside.
  • This cooling power is not, however, sufficient but instead it is advantageous if the cooling energy contained in outdoor air can be conducted also to the room devices.
  • Cooling of the room devices occurring with outdoor air is thus not normally utilized in the cooling of ventilation because it is generally awkward to implement and requires new pipe branches, heat exchangers and pumps to be added to the typical pipe field. Since the cooling plant and the ventilation plant typically come from different suppliers, it is not easy to coordinate these additional structures into a viable apparatus.
  • cooling with outdoor air When cooling with outdoor air is used, it is generally implemented by adding apparatuses to the cooling plant, with which the coldness of the outdoor air is transferred to the "main circulation circuit". This means a heat exchanger, its pumps and pipings, etc., must be added to the roof of the building.
  • This type of cooling is generally either ON or OFF, i.e. it can only be used when the temperature of the outdoor air is so low that all the cooling can be managed with it.
  • the purpose of this invention is to achieve a method for using outdoor air for cooling room devices, to which method the problems described above are not attached.
  • the method according to the invention is characterized in that the water returning from the room devices is used in the supply air radiator to heat the supply air, in which case this water cools and is conducted back to the room devices to cool the room spaces. In this way both heating energy and cooling energy are saved.
  • One preferred embodiment of the method according to the invention is characterized in that cooling with outdoor air is simultaneous with the cooling occurring by means of the cooling compressors.
  • the cooling power with the outdoor air can thus be supplemented with the compressor when the temperature of the outdoor air is not sufficiently low to provide all the necessary cooling.
  • Another preferred embodiment of the method according to the invention is characterized in that the operation of the supply air radiator is switched between cooling, heating and cooling with outdoor air according to the situation.
  • Cooling of the outdoor air occurs preferably without any external accessories, heat exchangers and fans, which themselves consume energy and reduce the benefit achievable from cooling with outdoor air.
  • the main circulation circuit is presented with the reference number 2.
  • the outdoor air comes inside via the cooling radiator/heating radiator 3, which is also called the supply air radiator.
  • the water returning from all or part of the room devices, e.g. of the chilled beams 4, is conducted to the circulation circuit of the radiator 3.
  • This water heats the air passing via the cooling radiator/heating radiator 3 to a suitable temperature for blowing inside.
  • the water cools when giving energy to the air.
  • the cooled water is conducted back to cooling the room devices. In this way the free cooling energy contained in outdoor air can be transferred to the room devices.
  • the cooling compressor 1 can be used at the same time to give additional power.
  • the water returning from the room devices divides partly into the branch 6, which conducts for cooling by outdoor air, and partly to the evaporator of the cooling compressor 1, where it is cooled.
  • the cooling plant and the ventilation plant are thus made into one integrated entity, in which the cooling radiator of the supply air also functions as a heating radiator of the supply air.
  • the cooling radiator of the supply air When cooling of the outdoor air is needed, it functions as a heating radiator.
  • the supply air radiator can switch operation between cooling, heating and cooling with outdoor air according to the situation.
  • cooling with outdoor air can be used in a much more extensive temperature range than in prior-art solutions because a compressor can be used simultaneously in parallel with it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

Method for using outdoor air to cool room devices, e.g. chilled beams (4). The invention is implemented such that the water returning from the room devices is used in the supply air radiator (3) to heat the supply air, in which case this water cools and is conducted back to the room devices to cool the room spaces.

Description

  • The object of this invention is a method for using outdoor air to cool room devices, e.g. chilled beams.
  • A need for cooling in the indoor spaces of buildings arises typically when the temperature of the outdoor air is high. The internal loads of room spaces, such as lighting and computers, create a need for cooling also when the temperature of the outdoor air is low, e.g. below 5 °C. In this case it is possible to use the colder temperature of the outdoor air for cooling the indoor air. Typically the colder temperature of the outdoor air is utilized only in inblowing fan air, i.e. air of a low temperature, e.g. 15 °C, is blown inside. This cooling power is not, however, sufficient but instead it is advantageous if the cooling energy contained in outdoor air can be conducted also to the room devices.
  • Cooling of the room devices occurring with outdoor air is thus not normally utilized in the cooling of ventilation because it is generally awkward to implement and requires new pipe branches, heat exchangers and pumps to be added to the typical pipe field. Since the cooling plant and the ventilation plant typically come from different suppliers, it is not easy to coordinate these additional structures into a viable apparatus.
  • When cooling with outdoor air is used, it is generally implemented by adding apparatuses to the cooling plant, with which the coldness of the outdoor air is transferred to the "main circulation circuit". This means a heat exchanger, its pumps and pipings, etc., must be added to the roof of the building. This type of cooling is generally either ON or OFF, i.e. it can only be used when the temperature of the outdoor air is so low that all the cooling can be managed with it.
  • The purpose of this invention is to achieve a method for using outdoor air for cooling room devices, to which method the problems described above are not attached. The method according to the invention is characterized in that the water returning from the room devices is used in the supply air radiator to heat the supply air, in which case this water cools and is conducted back to the room devices to cool the room spaces. In this way both heating energy and cooling energy are saved.
  • One preferred embodiment of the method according to the invention is characterized in that cooling with outdoor air is simultaneous with the cooling occurring by means of the cooling compressors. The cooling power with the outdoor air can thus be supplemented with the compressor when the temperature of the outdoor air is not sufficiently low to provide all the necessary cooling.
  • Another preferred embodiment of the method according to the invention is characterized in that the operation of the supply air radiator is switched between cooling, heating and cooling with outdoor air according to the situation.
  • Cooling of the outdoor air occurs preferably without any external accessories, heat exchangers and fans, which themselves consume energy and reduce the benefit achievable from cooling with outdoor air.
  • In the following, the invention will be described in more detail by the aid of a preferred embodiment with reference to the attached drawing.
  • In the diagram presented in the drawing, the main circulation circuit is presented with the reference number 2. The outdoor air comes inside via the cooling radiator/heating radiator 3, which is also called the supply air radiator. The water returning from all or part of the room devices, e.g. of the chilled beams 4, is conducted to the circulation circuit of the radiator 3. This water heats the air passing via the cooling radiator/heating radiator 3 to a suitable temperature for blowing inside. At the same time the water cools when giving energy to the air. The cooled water is conducted back to cooling the room devices. In this way the free cooling energy contained in outdoor air can be transferred to the room devices.
  • When sufficient cooling energy is not obtained from the outdoor air, the cooling compressor 1 can be used at the same time to give additional power. The water returning from the room devices divides partly into the branch 6, which conducts for cooling by outdoor air, and partly to the evaporator of the cooling compressor 1, where it is cooled.
  • In the apparatus used in the method according to the invention the cooling plant and the ventilation plant are thus made into one integrated entity, in which the cooling radiator of the supply air also functions as a heating radiator of the supply air. When cooling of the outdoor air is needed, it functions as a heating radiator. What is essential is that the supply air radiator can switch operation between cooling, heating and cooling with outdoor air according to the situation. In the method according to the invention cooling with outdoor air can be used in a much more extensive temperature range than in prior-art solutions because a compressor can be used simultaneously in parallel with it.
  • It is obvious to the person skilled in the art that the invention is not limited to the embodiments presented above, but that it can be varied within the scope of the claims presented below. It must be understood that the diagram presented by the drawing and the actuators presented in it are only one possibility for implementing the invention. They can thus be varied according to need.

Claims (3)

  1. Method for using outdoor air to cool room devices, e.g. chilled beams (4), characterized in that the water returning from the room devices is used in the supply air radiator (3) to heat the supply air, in which case this water cools and is conducted back to the room devices to cool the room spaces.
  2. Method according to claim 1, characterized in that cooling with outdoor air is simultaneous with the cooling occurring by means of the cooling compressors (1).
  3. Method according to claim 1 or 2, characterized in that the operation of the supply air radiator (3) is switched between cooling, heating and cooling with outdoor air according to the situation.
EP09397511.8A 2008-05-06 2009-04-02 Method for using outdoor air to cool room devices Withdrawn EP2116788A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20085412A FI20085412L (en) 2008-05-06 2008-05-06 A method of using outdoor air to cool room equipment

Publications (2)

Publication Number Publication Date
EP2116788A2 true EP2116788A2 (en) 2009-11-11
EP2116788A3 EP2116788A3 (en) 2014-08-13

Family

ID=39523067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09397511.8A Withdrawn EP2116788A3 (en) 2008-05-06 2009-04-02 Method for using outdoor air to cool room devices

Country Status (6)

Country Link
EP (1) EP2116788A3 (en)
KR (1) KR20090116629A (en)
CN (1) CN101576304B (en)
FI (1) FI20085412L (en)
NO (1) NO20091796L (en)
RU (1) RU2490557C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3757481A4 (en) * 2018-02-22 2021-02-17 Mitsubishi Electric Corporation AIR CONDITIONING DEVICE AND AIR HANDLING UNIT

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2583771C2 (en) 2010-01-24 2016-05-10 Ой Халтон Груп Лтд. Devices, systems and processes involving cooling beams
CN101839527B (en) * 2010-05-24 2012-07-18 广东格兰仕集团有限公司 Unitary air conditioner and operation method thereof
KR20140146109A (en) 2012-03-16 2014-12-24 오와이 할튼 그룹 엘티디. Chilled beam with multiple modes
CN106091287A (en) * 2016-06-29 2016-11-09 马耀东 A kind of indoor air temperature adjusting means utilizing outside air temperature to change

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252507A (en) * 1963-06-17 1966-05-24 Patrick R Conroy Multi-unit air-conditioning systems
US3305001A (en) * 1964-10-26 1967-02-21 Itt Plural zone heating and cooling system
US4446703A (en) * 1982-05-25 1984-05-08 Gilbertson Thomas A Air conditioning system and method
FI95505C (en) * 1992-12-08 1996-02-12 Flaekt Oy Method and apparatus for air conditioning and heating of room spaces
US5873256A (en) * 1994-07-07 1999-02-23 Denniston; James G. T. Desiccant based humidification/dehumidification system
FI100132B (en) * 1995-03-03 1997-09-30 Abb Installaatiot Oy Device in an air conditioner
SE520099C2 (en) * 2000-04-14 2003-05-27 Emerson Energy Systems Ab Device for cooling heat generating units
EP1693627A1 (en) * 2003-12-09 2006-08-23 Earthship K.K. Air conditioning system
CN1563830B (en) * 2004-04-18 2012-06-06 大庆富尔达环保节能科技有限责任公司 Method for utilizing and recovering heat from temp reducing of circulating cooling water
CN101915443B (en) * 2004-11-09 2012-08-29 松下电器产业株式会社 Dehumidifier
FI20060213L (en) * 2006-03-03 2007-09-04 Flaekt Woods Ab Cooling unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3757481A4 (en) * 2018-02-22 2021-02-17 Mitsubishi Electric Corporation AIR CONDITIONING DEVICE AND AIR HANDLING UNIT
US12173918B2 (en) 2018-02-22 2024-12-24 Mitsubishi Electric Corporation Air-conditioning apparatus and air handling unit

Also Published As

Publication number Publication date
FI20085412A7 (en) 2009-11-07
CN101576304A (en) 2009-11-11
FI20085412A0 (en) 2008-05-06
FI20085412L (en) 2009-11-07
CN101576304B (en) 2015-09-23
NO20091796L (en) 2009-11-09
RU2009117159A (en) 2010-11-10
KR20090116629A (en) 2009-11-11
RU2490557C2 (en) 2013-08-20
EP2116788A3 (en) 2014-08-13

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