WO2011074005A2 - Procédé et système de prérefroidissement pour prérefroidir de l'air - Google Patents

Procédé et système de prérefroidissement pour prérefroidir de l'air Download PDF

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Publication number
WO2011074005A2
WO2011074005A2 PCT/IN2010/000812 IN2010000812W WO2011074005A2 WO 2011074005 A2 WO2011074005 A2 WO 2011074005A2 IN 2010000812 W IN2010000812 W IN 2010000812W WO 2011074005 A2 WO2011074005 A2 WO 2011074005A2
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WO
WIPO (PCT)
Prior art keywords
air
cooling
water
stage
cooled
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Ceased
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PCT/IN2010/000812
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English (en)
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WO2011074005A3 (fr
Inventor
Sukhdarshan Singh Dhaliwal
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Publication of WO2011074005A3 publication Critical patent/WO2011074005A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • 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
    • 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
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00—Component parts of trickle coolers
    • F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
    • 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]
    • Y02B30/54—Free-cooling systems
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a sub-cooling and/or pre-cooling system and method for pre-cooling air.
  • the presently available pre-cooler generally comprises evaporator pads or spray nozzles, a fan or blower for drawing air though the evaporator pads, and a water distribution system having piping and pump connected to spray nozzles for spraying water or a distribution means to distribute water over the evaporator pads and a water reservoir or sump or tank. Pump supplies water from the tank into distribution means located along the top edges of evaporator pads.
  • Water level in tank is maintained by a water supply line and a float controlled valve.
  • the fan draws outside or ambient air through the air inlet side of precooler and delivers air through its outlet side to condenser of an air conditioning system, refrigeration or heat pump or any other system to be cooled.
  • This precooled air can be used for cooling the condenser in refrigeration, air conditioning system and heat pump systems and where cooled air is required to reject the heat.
  • US Patent No. 7765827 discloses a multi stage cooling apparatus for bringing down the temperature of air.
  • the system incorporates a direct evaporative cooling subsystem and an indirect evaporative cooling subsystem having one of a horizontal and a vertical set of heat exchanger channels.
  • the system is devised with the heat exchanger channels extending from one stage into the other.
  • the multi-stage hybrid evaporative cooling system further includes a refrigeration system for lowering the temperature of the indirect evaporative cooling subsystem air without affecting its pressure flow.
  • US Patent No. 4380810 discloses a process and apparatus in which a supply of low humidity air is introduced into an evaporative cooler where such air is indirectly cooled without an increase in moisture content by a first re-circulating water evaporative unit in a first and second stage unit and then is further indirectly and directly cooled by a second re-circulating water evaporative unit in a third and fourth stage unit.
  • the air which is cooled indirectly is used to cool the re-circulating water in the direct cooling phase of the evaporative unit of such fourth stage.
  • An object of the present invention is to provide a simple pre-cooling system and method to obviate the shortcoming associated with existing systems.
  • a still further object of the invention is to provide such a means in a form which facilitates its installation over an existing cooler or condenser and which requires a minimum of additional mounting space and inexpensive changes.
  • the present invention in one aspect provides a pre-cooling system comprising a first stage sensible cooling means for exchanging sensible heat indirectly between water and air to cool air and raising the temperature of the water and a second stage adiabatic cooling means for cooling the air adiabatically by direct contact of water with sub-cooled air from the first stage sensible cooling means. The air and water are cooled to a wet bulb temperature lower than ambient wet bulb temperature.
  • the present invention provides a middle cooling means to cool warmed water of first stage before passing to the second stage adiabatic cooling means.
  • the present invention provides the middle cooling means integrally adapted between the first stage i.e. sensible cooling means and second stage i.e. adiabatic cooling means along with a diversion means to divert a part of cooled air leaving the first stage sensible cooling means cross to the flow of warmed water.
  • the present invention provides a method for pre-cooling air comprising steps of indirectly contacting atmospheric air and water to exchange sensible heat to cool air and heat water, and directly contacting for adiabatic cooling of cooled air and water wherein air and water are cooled to wet bulb temperature lower than ambient wet bulb by evaporation of less quantity of water.
  • the present invention provides a step of cooling warmed water by indirectly or directly before directly contacting with the cooled air.
  • Figure 1 shows one embodiment of a Pre-cooler system according to the present invention
  • Figure 2 shows another embodiment of a Pre-cooler system according to the present invention
  • Figure 3 shows a pre-cooler system showing preferred arrangement of a middle cooling means
  • Figure 4 shows a psychometric chart illustrating the various stage of air in an illustrative example using a pre-cooling system of Figure 1.
  • the present invention provides a pre-cooling system.
  • the first stage is a sensible cooling means for cooling air indirectly by exchanging sensible heat with water to cool the air and raise the temperature of water and second stage is an adiabatic cooling means for direct contact of warmed water with cooled air of the first stage.
  • a middle cooling means can be adapted to cool warmed water of first stage before passing to the second stage adiabatic cooling means.
  • the middle cooling means can be a heat exchanger to cool the warmed water indirectly or a cooling tower to cool warmed water adiabatically.
  • the middle cooling means can be integrally adapted between the first stage sensible cooling means and second stage adiabatic cooling means along with a diversion means to divert a part of cooled air leaving the first stage sensible cooling means cross to the flow of warmed water.
  • the sensible cooling means includes a heat exchanger configured for sensibly sub-cooling the air by providing indirect contact with water.
  • the adiabatic direct cooling means comprises a surface evaporation media for direct contact between sub-cool air and warmed water for adiabatic cooling of air, a distributing means for distributing water over the surface evaporation media; and a water reservoir below the surface evaporation media for collecting cooled water. Cooled water from the water reservoir is pumped through the heat exchanger by a pump.
  • a make-up water tank is adapted for providing water to water reservoir at predetermined level.
  • the system may comprise a means for drawing or passing air from the heat exchanger and the surface evaporation media.
  • the means for passing/drawing air can be a means of system to which the precooier system is adapted and can be a fan or blower.
  • the system to which precooier system is adapted can be an air handling unit, Air-conditioning or refrigeration condenser or any other sensible heat rejection equipment such as dry cooling tower, Gas Turbine Inlet Air Cooling (GTIAC) system, Compressor Air Pre Cooler (CAPC) system, Treated Fresh Air Unit (TFA), Dedicated Outdoor Air system (DOAS), Air Side Economizer (ASE) system, Computer Room Air conditioner (CRAC) system or any other system requiring heat rejection.
  • GTIAC Gas Turbine Inlet Air Cooling
  • CAC Compressor Air Pre Cooler
  • TFA Treated Fresh Air Unit
  • DOAS Dedicated Outdoor Air system
  • ASE Air Side Economizer
  • CRAC Computer Room Air conditioner
  • the system may comprise a controller configured for controlling pre-cooling operations.
  • the present invention also provides a method for pre-cooling air which comprises two steps. Initially, indirectly contacting the air flow and water flow to exchange sensible heat to cool air and heat water, and then directly contacting said flows for adiabatic cooling of cooled air and hot water.
  • Figures 1 , 2 and 3 show exemplary preferred embodiments of the pre-cooling system according to the present invention.
  • Figures 1 , 2 and 3 show the precooling system (100, 200, 300) comprises two stages namely a means for sensibly sub-cooling air as a first stage and an adiabatic cooling means (20) as second stage.
  • the means for sensibly sub-cooling air includes a heat exchanger referred as 10 in the Figure 1 , 2 and 3.
  • the adiabatic cooling means (20) includes a surface evaporation media/evaporative pads (22) for cooling the air adiabatically by directly contacting air and water, a water reservoir (30) adapted below the surface evaporation media (22) and a water pump (40) connected to the water reservoir (30) for pumping water and a distributing means (50) adapted above the surface evaporation media (22) and connected to the outlet of the heat exchanger (10) for distributing water over the surface evaporation media (22).
  • the evaporation media (22) can be evaporator pads, single phase atomizing nozzles, Two phase atomizing nozzles or ultrasonic atomizing devices and in combination thereof.
  • the evaporation media are preferably evaporative pads made of cellulose/polymer having very high surface to volume area ratio.
  • the heat exchanger (10) is preferably tube type heat exchanger.
  • the tube may have multiple partitions (not shown) to create multiple independent passages along with or without (not shown) fins to increase the heat transfer area.
  • the tubes are connected to supply and discharge header.
  • the tubes are made of polymer or metal and are flat or round. Further, these tubes are coated with proprietary nano-coating (not shown) to improve thermal conductivity and for breaking the boundary layer on the air side.
  • the surface evaporation media/evaporative pads (22) can be made of cellulose pads having very high surface to volume area ratio.
  • a controller (not shown) is provided to the pre-cooling system for controlling predetermined set points such as controlling the pumping based on ambient temperature, protecting the pump from overload, controlling level of water in the water reservoir etc.
  • the controller can be configured with the system to which pre-cooling system of the present invention is adapted such as configuring the controller with the refrigeration system for cooling refrigerant wherein the controller can be configured to the refrigeration compressor by controlling the pump during low temperature periods i.e. winter season by sensing the refrigerant return temperature.
  • the controller can be configured for regulating the fan speed of condenser fan or supply air fan to save energy.
  • Figure 2 shows the precooling system (200) comprises three stages namely a means for sensibly sub-cooling air as a first stage, an adiabatic cooling means (20) as second stage and a middle cooling means to cool warmed water of first stage before sending to the second stage.
  • the middle cooling means can be a heat exchanger to cool the warmed water indirectly or a cooling tower to cool warmed water adiabatically.
  • the precooling system operates when the ambient temperature is higher than the set temperature.
  • the outside/atmospheric air to be cooled is passed/ drawn through the heat exchanger (10) and the water is pumped by a water pump (40) from the reservoir tank (30) flows through tubes of the heat exchanger (10) where sensible heat transfer takes place between air and water.
  • the heat transfer reduces temperature of air and simultaneously raises the temperature of water flowing in the tubes.
  • the warmed water leaving the heat exchanger (10) is then sprayed from top of the surface evaporation media (22) by a distributor means (50) and the subcooled air is drawn or passed through surface evaporation media (22).
  • the surface evaporation media (22) by contacting the warmed water with air thereby adiabatically cool both air and water.
  • the wet bulb of the air is lower than the ambient wet bulb temperature. This ensures that the water and air can be cooled to this new wet bulb temperature, which is always lower than ambient wet bulb therefore less water evaporates in the adiabatic cooling ensuring cooling of the air.
  • the water dripping through the surface evaporation media (22) is collected in the water tank/sump (30) for re-circulating.
  • the cooled air coming through the surface evaporative media is allowed to pass through a heat rejection heat exchanger of the system to which the precooler adapted. Air leaving the system (100) is cooled to wet bulb temperature lower than ambient wet bulb by evaporation of less quantity of water.
  • the warmed water from the heat exchanger (10) is cooled by a middle cooling means (60) before spraying over the evaporation media (22).
  • FIG. 3 shows a preferred arrangement of the middle cooling means (60) of a pre-cooling system (300) according to the present invention.
  • a part of cooled air from the first stage sensible cooling means (10) is diverted by a diversion means (65) for cooling warmed water in the middle cooling means.
  • the diverted cooled-air flows upward cross to the warmed water and cooled air flows which results in adiabatic cooling of warmed water.
  • the system (300) comprises a separate water reservoir (30B) below the middle cooling means to collect cooled water which is ⁇ then sprayed in the adiabatic cooling means (20) of second stage. This cooled water can be re-circulated to the First stage i.e.
  • the water dripping through the adiabatic cooling means (20) is chilled water and collected in a separate water reservoir (30A) as shown in Figure 3.
  • This chilled water can be used for chiller or may pump through the heat exchanger (10) of first stage to cool the ambient air.
  • the air leaving the precooling system (300) is closer to ambient dew point temperature.
  • the pre-cooling system of the present invention can be configured with a system to which cooling is required such as an air handling unit, Air-conditioning or refrigeration condenser or any other sensible heat rejection equipment such as dry cooling tower, Gas Turbine Inlet Air Cooling (GTIAC) system, Compressor Air Pre Cooler (CAPC) system, Treated Fresh Air Unit (TFA), Dedicated Outdoor Air system (DOAS), Air Side Economizer (ASE) system, Computer Room Air conditioner(CRAC) system or any other system requiring heat rejection and the controller of the pre-cooling system can be configured with the said system.
  • GTIAC Gas Turbine Inlet Air Cooling
  • CAC Compressor Air Pre Cooler
  • TFA Treated Fresh Air Unit
  • DOAS Dedicated Outdoor Air system
  • ASE Air Side Economizer
  • CRAC Computer Room Air conditioner
  • FIG. 1 an illustrative treatment of air may be described as follows.
  • Supply air is available, for example, during the summer in one part of India with a dry bulb temperature of 34 DEG C. and wet bulb temperature of 22 DEG C. This is illustrated at point 1 on chart Figure 4.
  • the supply air passes through the sensible heat exchanger (10) where its dry bulb temperature is reduced to 24.5 DEG C, and wet bulb to 16 DEG C, without any increase in its dew point of 10 DEG C. Its relative humidity, however, increases from 23% at point 1 to 40% at point 2.
  • the air leaving the adiabatic cooling means 20 has wet bulb of 16 DEG C. and dry bulb temperature of 17 DEG C. and has a relative humidity at discharge of 90% (point 3 on the chart).
  • the system of the present invention is easy to install and requires about 50% or less water compared to state of the art pre coolers. Further, when the system of the present invention used in combination with air conditioning system or refrigeration circuit, it reduces power consumption and also provides integrated control to protect the refrigeration system.

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  • 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)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

La présente invention concerne un procédé et un système de prérefroidissement simple pour prérefroidir de l'air. Le système de prérefroidissement comprend un moyen de refroidissement sensible de premier étage permettant un échange de chaleur sensible indirect entre l'eau et l'air, afin de refroidir l'air et d'augmenter la température de l'eau et un moyen de refroidissement adiabatique de second étage permettant de refroidir l'air de façon adiabatique par un contact direct de l'eau avec l'air sous-refroidi par le moyen de refroidissement sensible de premier étage. Dans le procédé de prérefroidissement de l'air, l'air atmosphérique et l'eau sont mis en contact indirect pour un échange de chaleur sensible afin de refroidir l'air et de chauffer l'eau, et l'eau et l'air refroidi sont mis en contact direct pour un refroidissement adiabatique de l'air refroidi et de l'eau, l'air et l'eau étant refroidis de manière à atteindre une température de bulbe humide inférieure à une température de bulbe humide ambiante, par l'évaporation d'une quantité d'eau inférieure.
PCT/IN2010/000812 2009-12-15 2010-12-15 Procédé et système de prérefroidissement pour prérefroidir de l'air Ceased WO2011074005A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2763MU2009 2009-12-15
IN2763/MUM/2009 2009-12-15

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WO2011074005A2 true WO2011074005A2 (fr) 2011-06-23
WO2011074005A3 WO2011074005A3 (fr) 2011-09-09

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013021147A1 (fr) 2011-08-09 2013-02-14 Williams Duncan Raymond Appareil de refroidissement de l'air à haut rendement
CN103499137A (zh) * 2013-09-02 2014-01-08 艾默生网络能源有限公司 一种机房的制冷控制方法、装置及系统
JP2016090218A (ja) * 2014-10-29 2016-05-23 台達電子工業股▲ふん▼有限公司Ｄｅｌｔａ Ｅｌｅｃｔｒｏｎｉｃｓ，Ｉｎｃ． 空気調和機の換気予冷装置
EP2895797A4 (fr) * 2013-11-08 2016-08-10 Coolfactor Llc Système de climatisation à évaporation
EP3098558A1 (fr) 2015-12-02 2016-11-30 Ilmars Blumbergs Panneau de protection pour système de refroidissement pré adiabatique
USD792486S1 (en) 2015-11-30 2017-07-18 Mobicool Electronic (Shenzhen) Co., Ltd. Portable split refrigerator
USD802029S1 (en) 2015-11-12 2017-11-07 Mobicool Electronic (Zhuhai) Co., Ltd. Portable refrigerator
WO2018021967A1 (fr) * 2016-07-25 2018-02-01 Innosparks Pte Ltd Système de gestion de l'eau d'un appareil de refroidissement par évaporation à double air et à double eau
EP3191768A4 (fr) * 2014-09-10 2018-05-23 Munters Corporation Procédé et appareil permettant de réduire l'eau au minimum destinés à être utilisés dans des dispositifs de refroidissement par évaporation
GR20170100232A (el) * 2017-05-15 2019-02-25 Δημητριος Ζαχαρια Ανδριανος Μοναδα κλιματισμου εξωτερικων χωρων υψηλων θερμοκρασιων
EP3347663A4 (fr) * 2015-09-10 2019-03-06 Munters Corporation Procédé et appareil permettant de réduire l'eau à un minimum et destinés à des dispositifs de refroidissement par évaporation
EP3699504A1 (fr) * 2019-02-25 2020-08-26 C.T.A. Refroidisseur adiabatique
US11585576B2 (en) 2019-05-17 2023-02-21 Gas Technology Institute Cooling system
WO2023047259A1 (fr) * 2021-09-22 2023-03-30 Haddadi Ali Reza Pack de toit d'air frais à deux étages
US12287120B2 (en) 2023-07-05 2025-04-29 Modine Manufacturing Company Adiabatic cooling system
ES3040682A1 (es) * 2024-05-03 2025-11-03 Univ Miguel Hernandez De Elche Dispositivo de preenfriamiento evaporativo del aire de entrada a una máquina de aire acondicionado y método de operación de dicho dispositivo
WO2026024169A1 (fr) 2025-02-20 2026-01-29 STRELITS -STRELE, Janis Filtre de protection pour un système de pré-refroidissement adiabatique

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US4380810A (en) 1980-09-12 1983-04-19 Bell Telephone Laboratories, Incorporated Loopback test
US7765827B2 (en) 2005-11-08 2010-08-03 Everest Acquisition Holdings, Inc. Multi-stage hybrid evaporative cooling system

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013021147A1 (fr) 2011-08-09 2013-02-14 Williams Duncan Raymond Appareil de refroidissement de l'air à haut rendement
CN103499137A (zh) * 2013-09-02 2014-01-08 艾默生网络能源有限公司 一种机房的制冷控制方法、装置及系统
EP2895797A4 (fr) * 2013-11-08 2016-08-10 Coolfactor Llc Système de climatisation à évaporation
EP3191768A4 (fr) * 2014-09-10 2018-05-23 Munters Corporation Procédé et appareil permettant de réduire l'eau au minimum destinés à être utilisés dans des dispositifs de refroidissement par évaporation
JP2016090218A (ja) * 2014-10-29 2016-05-23 台達電子工業股▲ふん▼有限公司Ｄｅｌｔａ Ｅｌｅｃｔｒｏｎｉｃｓ，Ｉｎｃ． 空気調和機の換気予冷装置
EP3347663A4 (fr) * 2015-09-10 2019-03-06 Munters Corporation Procédé et appareil permettant de réduire l'eau à un minimum et destinés à des dispositifs de refroidissement par évaporation
USD802029S1 (en) 2015-11-12 2017-11-07 Mobicool Electronic (Zhuhai) Co., Ltd. Portable refrigerator
USD802028S1 (en) 2015-11-12 2017-11-07 Mobicool Electronic (Zhuhai) Co., Ltd. Portable refrigerator
USD792486S1 (en) 2015-11-30 2017-07-18 Mobicool Electronic (Shenzhen) Co., Ltd. Portable split refrigerator
USD802630S1 (en) 2015-11-30 2017-11-14 Mobicool Electronic (Shenzhen) Co., Ltd. Portable split refrigerator
EP3098558A1 (fr) 2015-12-02 2016-11-30 Ilmars Blumbergs Panneau de protection pour système de refroidissement pré adiabatique
US10883738B2 (en) 2016-07-25 2021-01-05 St Engineering Innosparks Pte. Ltd. Water management system of a dual-air dual-water evaporative cooling apparatus
CN109642742A (zh) * 2016-07-25 2019-04-16 创烁私人有限公司 双空气双水蒸发冷却设备的水管理系统
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