WO2022243713A1 - Climate control systems with indirect and direct adiabatic cooling - Google Patents

Climate control systems with indirect and direct adiabatic cooling Download PDF

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Publication number
WO2022243713A1
WO2022243713A1 PCT/HR2021/050001 HR2021050001W WO2022243713A1 WO 2022243713 A1 WO2022243713 A1 WO 2022243713A1 HR 2021050001 W HR2021050001 W HR 2021050001W WO 2022243713 A1 WO2022243713 A1 WO 2022243713A1
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WO
WIPO (PCT)
Prior art keywords
airstream
cooling
nozzles
pump
indirect
Prior art date
Application number
PCT/HR2021/050001
Other languages
French (fr)
Inventor
Luka VRĐUKA
Original Assignee
Poly-Rek D.O.O.
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 Poly-Rek D.O.O. filed Critical Poly-Rek D.O.O.
Priority to PCT/HR2021/050001 priority Critical patent/WO2022243713A1/en
Publication of WO2022243713A1 publication Critical patent/WO2022243713A1/en

Links

Classifications

    • 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
    • F24F5/0035—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 using evaporation
    • 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
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F3/12—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 treatment of the air otherwise than by heating and cooling
    • F24F3/14—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 treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153—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 treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/039—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing using water to enhance cooling, e.g. spraying onto condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • Present invention relates to a heat exchanging device for air conditioning using indirect and direct adiabatic cooling.
  • Cooling takes place by evaporation of water in the other duct system.
  • KR20090019326 A discloses an indirect evaporative cooling machine and a regenerative evaporative cooling machine using the same which improves the performance of the regenerative evaporative cooling machine by resolving the ununiformity of air flow caused by contact between the air and water by making the flow rate of air uniform.
  • the purpose of this invention is to provide the climate control system that would be able to overcome drawbacks of the conventional systems known in the art.
  • Another object of this invention is to provide an option to be used during cold season enabling humidification of the incoming airstream.
  • the invention relates to a heat exchanging device for air conditioning using indirect and direct adiabatic cooling.
  • system with pump M and nozzles (SI, S2) in section of heat exchanger is installed.
  • Pump is circulating water over the installed piping system to nozzles SI and S2. Water is sprayed into airstream FI, and in this way is adiabatically cooled which results in better indirect adiabatic cooling of airstream F2.
  • F2 system of nozzles S3 is connected to pump system, and is directly cooling airstream F2 with adiabatic process.
  • system allows installation of the three way valve on pump system for use during cold season, which results in desirable humidification of airstream F2.
  • FIG. 1 Schematic drawing of the climate system with indirect and direct adiabatic cooling.
  • This invention relates to the heat exchanging device for air conditioning using indirect and direct adiabatic cooling shown in Figure 1, more specifically to the heat exchanging device comprising: plurality of plates for exchanging heat between two airstreams (FI and F2); wherein airstream F2 from outdoor is cooled over plates with cooler airstream FI from indoor area and Pump (M) which is designed to circulate water over the piping system to nozzles (SI and S2) and the water is sprayed into airstream FI which causes indirect adiabatic cooling of airstream F2 and system of nozzles (S3) is connected to pump (M) which is directly cooling airstream F2 adiabatically.
  • system allows installation of the three way valve on pump system for use during cold season, which closes nozzles SI and S2 and opens system of nozzles S3 and results in desirable humidification of airstream F2.
  • More environmentally friendly cooling media is used (only cooling media used for adiabatic cooling is water)
  • climate control device in practice confirmed the above mentioned performances and proved to be fully compliant with current regulations which exclude the use of chillers with low efficient parts (compressors, fans etc.), and also regulations aiming to save environment which also exclude usage of refrigerants with high Global Warming Potential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention relates to a heat exchanging device for air conditioning using indirect and direct adiabatic cooling. To increase efficiency of cooling in summer period system with pump M and nozzles (S1, S2) in section of heat exchanger is installed. Pump is circulating water over the installed piping system to nozzles S1 and S2. Water is sprayed into airstream F1, and in this way is adiabatically cooled which results in better indirect adiabatic cooling of airstream F2. In order to increase cooling of airstream even more, F2 system of nozzles S3 is connected to pump system, and is directly cooling airstream F2 with adiabatic process. Optionally, system allows installation of the three way valve on pump system for use during cold season, which results in desirable humidification of airstream F2.

Description

CLIMATE CONTROL SYSTEMS WITH INDIRECT AND DIRECT ADIABATIC COOLING
DESCRIPTION
FIELD OF INVENTION
Present invention relates to a heat exchanging device for air conditioning using indirect and direct adiabatic cooling.
BACKGROUND AND PRIOR ART
In building ventilation systems there is a demand to cool fresh air which is then supplied to the room. Beside covering ventilation losses, systems should also cover heat gained from different machines inside buildings (computers, servers, etc.). There are many solutions provided in the state of the art which are all based on several steps: heat recovery, cooling wherein the energy needed for cooling air is gained form systems which are based on refrigerant system and use of the electrical power (chillers, condensing units and similar). One of the examples of conventional systems used are disclosed in WO87/01188 which describes the apparatus for indirect, evaporative cooling of an air current, including a contact body made up in layers, with duct systems between layers. There are two separate duct systems, useful air for cooling passing through one system, while a cooling air current passes through the other system. Cooling takes place by evaporation of water in the other duct system. Another example is described in KR20090019326 A which discloses an indirect evaporative cooling machine and a regenerative evaporative cooling machine using the same which improves the performance of the regenerative evaporative cooling machine by resolving the ununiformity of air flow caused by contact between the air and water by making the flow rate of air uniform.
Furthermore, conventional system that incorporates method that uses a secondary air flow to cool primary air flow (DE4441066 Al). The secondary air flow is humidity charged during humidifying, at least up to the saturation line of 100 percent relative air humidity. The concept has been further evolved in WO 2004085946 Al wherein indirect adiabatic cooling is used and which discloses heat exchanger for exchanging heat between a first air stream and second air stream comprising plurality of plates limiting exchange chambers which are serially arranged in a transversal direction with respect to the plates. According to the characteristics, WO 2004085946 Al represents the closest prior art related to the invention but unlike present invention does not use direct adiabatic cooling. All these conventional systems experience several problems that could be summarized as follows: low energy efficiency, require cooling media comprising refrigerants with high Global Warming Potential (GWP) and therefore environmentally unfriendly and very high costs of maintenance due to the complexity of the system.
The purpose of this invention is to provide the climate control system that would be able to overcome drawbacks of the conventional systems known in the art.
Another object of this invention is to provide an option to be used during cold season enabling humidification of the incoming airstream.
SUMMARY OF THE INVENTION
The invention relates to a heat exchanging device for air conditioning using indirect and direct adiabatic cooling. To increase efficiency of cooling in summer period system with pump M and nozzles (SI, S2) in section of heat exchanger is installed. Pump is circulating water over the installed piping system to nozzles SI and S2. Water is sprayed into airstream FI, and in this way is adiabatically cooled which results in better indirect adiabatic cooling of airstream F2. In order to increase cooling of airstream even more, F2 system of nozzles S3 is connected to pump system, and is directly cooling airstream F2 with adiabatic process. Optionally, system allows installation of the three way valve on pump system for use during cold season, which results in desirable humidification of airstream F2.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 Schematic drawing of the climate system with indirect and direct adiabatic cooling. DETAILED DESCRIPTION OF THE INVENTION
This invention relates to the heat exchanging device for air conditioning using indirect and direct adiabatic cooling shown in Figure 1, more specifically to the heat exchanging device comprising: plurality of plates for exchanging heat between two airstreams (FI and F2); wherein airstream F2 from outdoor is cooled over plates with cooler airstream FI from indoor area and Pump (M) which is designed to circulate water over the piping system to nozzles (SI and S2) and the water is sprayed into airstream FI which causes indirect adiabatic cooling of airstream F2 and system of nozzles (S3) is connected to pump (M) which is directly cooling airstream F2 adiabatically.
Optionally, system allows installation of the three way valve on pump system for use during cold season, which closes nozzles SI and S2 and opens system of nozzles S3 and results in desirable humidification of airstream F2. By making use of climate control device according to present invention, following advantages over prior art and conventional systems up to date are obtained: Considerably higher energetic efficiency (consumption of electrical consumption is 20 times lower, p.e. 1,5 kW for indirect and direct adiabatic cooling versus 50 kW for standard chiller)
More environmentally friendly cooling media is used (only cooling media used for adiabatic cooling is water)
The use of climate control device in practice confirmed the above mentioned performances and proved to be fully compliant with current regulations which exclude the use of chillers with low efficient parts (compressors, fans etc.), and also regulations aiming to save environment which also exclude usage of refrigerants with high Global Warming Potential.

Claims

1. The heat exchanging device comprising:
Plurality of plates for exchanging heat between two airstreams (FI and F2); wherein
Airstream F2 from outdoor is cooled over plates with cooler airstream FI from indoor area and
Pump (M) is designed to circulate water over the piping system to nozzles (SI and S2) and the water is sprayed into airstream FI which causes indirect adiabatic cooling of airstream F2 and system of nozzles (S3) is connected to pump (M) which is directly cooling airstream F2 adiabatically.
2. The heat exchanging device according to claim 1, is having three-way valve installed on pump (M) piping system and three-way valve system closes nozzles SI and S2 and opens system of nozzles S3.
3. Use of heat exchanging device according to claim 2, for humidification of airstream F2 in winter period.
PCT/HR2021/050001 2021-05-18 2021-05-18 Climate control systems with indirect and direct adiabatic cooling WO2022243713A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/HR2021/050001 WO2022243713A1 (en) 2021-05-18 2021-05-18 Climate control systems with indirect and direct adiabatic cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR2021/050001 WO2022243713A1 (en) 2021-05-18 2021-05-18 Climate control systems with indirect and direct adiabatic cooling

Publications (1)

Publication Number Publication Date
WO2022243713A1 true WO2022243713A1 (en) 2022-11-24

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001188A1 (en) 1985-08-16 1987-02-26 Ab Carl Munters Apparatus for indirect evaporative cooling
DE4441066A1 (en) 1994-10-27 1996-05-02 Orion Al Ko Ag Procedure for cooling of air flow
WO2004085946A1 (en) 2003-03-26 2004-10-07 Mentus Holding Ag Plate heat exchanger
KR20090019326A (en) 2007-08-20 2009-02-25 한국과학기술연구원 Indirect evaporative cooling machine and regenerative evaporative cooling machine using the same
CN204084682U (en) * 2014-08-08 2015-01-07 西安工程大学 Purification type evaporative cooling air-treatment unit
CN207230773U (en) * 2017-08-29 2018-04-13 西安工程大学 With reference to the two-stage residual heat recovery type fresh air conditioner-mechanical of indirect evaporative cooling technology
CN109373479A (en) * 2018-09-26 2019-02-22 西安工程大学 A kind of photovoltaic directly drives the cooling heat recovery environmental protection air-conditioning system of evaporation
CN109373480B (en) * 2018-09-27 2020-12-15 西安工程大学 Energy-saving purification air-conditioning system combining evaporative cooling and evaporative condensation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001188A1 (en) 1985-08-16 1987-02-26 Ab Carl Munters Apparatus for indirect evaporative cooling
DE4441066A1 (en) 1994-10-27 1996-05-02 Orion Al Ko Ag Procedure for cooling of air flow
WO2004085946A1 (en) 2003-03-26 2004-10-07 Mentus Holding Ag Plate heat exchanger
KR20090019326A (en) 2007-08-20 2009-02-25 한국과학기술연구원 Indirect evaporative cooling machine and regenerative evaporative cooling machine using the same
CN204084682U (en) * 2014-08-08 2015-01-07 西安工程大学 Purification type evaporative cooling air-treatment unit
CN207230773U (en) * 2017-08-29 2018-04-13 西安工程大学 With reference to the two-stage residual heat recovery type fresh air conditioner-mechanical of indirect evaporative cooling technology
CN109373479A (en) * 2018-09-26 2019-02-22 西安工程大学 A kind of photovoltaic directly drives the cooling heat recovery environmental protection air-conditioning system of evaporation
CN109373480B (en) * 2018-09-27 2020-12-15 西安工程大学 Energy-saving purification air-conditioning system combining evaporative cooling and evaporative condensation

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