US20040134218A1 - Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air - Google Patents

Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air Download PDF

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Publication number
US20040134218A1
US20040134218A1 US10/339,360 US33936003A US2004134218A1 US 20040134218 A1 US20040134218 A1 US 20040134218A1 US 33936003 A US33936003 A US 33936003A US 2004134218 A1 US2004134218 A1 US 2004134218A1
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United States
Prior art keywords
heat exchanger
reverse cycle
cycle refrigeration
refrigeration apparatus
environment
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.)
Abandoned
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US10/339,360
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English (en)
Inventor
Alex Alexandre
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.)
REFRIGERATION NOEL Inc
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REFRIGERATION NOEL Inc
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Publication date
Application filed by REFRIGERATION NOEL Inc filed Critical REFRIGERATION NOEL Inc
Priority to CA002415993A priority Critical patent/CA2415993A1/fr
Priority to US10/339,360 priority patent/US20040134218A1/en
Assigned to REFRIGERATION NOEL INC. reassignment REFRIGERATION NOEL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALEXANDRE, ALEX
Publication of US20040134218A1 publication Critical patent/US20040134218A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02331—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during cooling
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02334—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during heating
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle

Definitions

  • the present invention is concerned with an air conditioning system for conditioning ambient air of an environment, an interior heat exchanger coil unit used in such air conditioning system, and a method for conditioning ambient air of the environment. More specifically, the invention relates to air conditioning systems which utilize reverse cycle refrigeration apparatuses to either heat or cool air inside a building. More specifically, the present invention is efficient for heat pumps.
  • Air conditioning systems found in most public and residential buildings operate according to certain thermodynamic principles using the property of certain gases. These air conditioning systems are generally composed of a compressor, a heat exchanger having a heat exchanger coil located inside a building, and a heat exchanger located outside the building.
  • An air conditioning system comprises a closed circuit in which a refrigeration fluid flows. This fluid is converted from a gaseous state to a liquid state under the effect of pressures and temperatures present in the system, and vice versa. Under the effects of the pressures inside the system, the refrigeration fluid is pushed towards an evaporator.
  • the evaporator whose heat exchanger coil is generally found inside of the building for cooling, enables the refrigeration fluid to absorb ambient heat. This exchange is carried out by passing hot air from the room to be cooled on the heat exchanger coil of the evaporator. At this moment, the refrigeration fluid which is in a liquid state heats up under the effect of heat present in the ambient air and passes then from a liquid state to a gaseous state.
  • thermo pumps enables to reduce considerably the cost of energy required for the heating, more particularly in the fall and spring seasons, as well as during certain days of the winter when the temperature is not excessively low.
  • a drawback with all of the systems and methods described above is that neither means nor steps are described for easily and economically defrosting a heat exchanger coil while providing a machine or method that can be very efficient for heating or cooling an environment.
  • An object of the present invention is to overcome the above-mentioned drawbacks.
  • an interior heat exchanger coil unit comprising a first heat exchanger coil extending along a given path; a second heat exchanger coil distinct from the first heat exchanger coil and extending substantially along at least a portion of said given path; and a group of fins extending between both heat exchanger coils along said at least a portion of said given path for allowing a heat exchange between the heat exchanger coils.
  • an air conditioning system for conditioning ambient air of an environment, the air conditioning system comprising a first reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a heat exchanger coil extending along a given path, and an exterior portion located outside of the environment; a second reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a heat exchanger coil distinct from the heat exchanger coil of the first reverse cycle refrigeration apparatus and extending substantially along at least a portion of said given path, and an exterior portion located outside of the environment; and a group of fins extending between both heat exchanger coils along said at least a portion of said given path for allowing a heat exchange between both heat exchanger coils.
  • a first reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a heat exchanger coil extending along a given path, and an exterior portion located outside of the environment
  • a second reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a
  • a method for conditioning ambient air of an environment comprising the steps of: a) conditioning the ambient air of the environment with a first reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a heat exchanger coil extending along a given path, and an exterior portion located outside of the environment; b) conditioning the ambient air of the environment with a second reverse cycle refrigeration apparatus including a circuit having an interior portion located inside of the environment and being provided with a heat exchanger coil distinct from the heat exchanger coil of the first reverse cycle refrigeration apparatus and extending substantially along at least a portion of said given path, and an exterior portion located outside of the environment; and c) exchanging heat between both heat exchanger coils via a group of fins extending between both heat exchanger coils along said at least a portion of said given path.
  • FIG. 1 is schematic perspective view of two distinct heat exchanger coils shown as being separated from each other to better show each coil;
  • FIG. 2 is a schematic perspective view of the heat exchanger coils of FIG. 1 in operating position with a group of common fins;
  • FIG. 3 is a schematic front view of what is shown in FIG. 2;
  • FIG. 4 is a schematic perspective view showing an air conditioning system according to the present invention within its environment, with a heat furnace;
  • FIG. 5 is a circuit diagram of an air conditioning system according to the present invention, in a first operating position
  • FIG. 6 is a circuit diagram of an air conditioning system according to the present invention, in a second operating position
  • FIG. 7 is a circuit diagram of an air conditioning system according to the present invention, in a third operating position.
  • FIG. 8 is a circuit diagram of an air condition system according to the present invention, in a fourth operating position.
  • thermo pumps also commonly known as “thermo pumps”
  • HVAC Heating, Ventilating and Air Conditioning
  • heat is not to be taken in its commonly known sense, but rather refers to “any form of energy associated with the motion of atoms or molecules and capable of being transmitted through solid and fluid media by conduction, through fluid media by convection, and through empty space by radiation”, as is known by a person skilled in the art.
  • FIGS. 1, 2 and 3 there is shown an interior heat exchanger coil unit which comprises heat exchanger coil 2 extending along a given path and heat exchanger coil 4 distinct from the first heat exchanger coil 2 .
  • Exchanger coil 4 extends substantially along at least a portion of the given path.
  • the coils are shown as being separated to each other to better show each coil but, in operating position, the coils are positioned as shown in FIGS. 2 and 3.
  • the interior heat exchanger coil unit also comprises a group of fins 6 extending between both heat exchanger coils 2 and 4 along the path portion for increasing heat exchange between the coils 2 and 4 .
  • Such configuration of the heat exchanger coils 2 and 4 with the fins 6 allows different operating modes which will be described in reference to FIGS. 5 to 8 .
  • Each exchanger coil 2 or 4 is independent from the other in that the fluid circulating through one of the coil does not circulate in the other. However, both coils 2 and 4 are welded together by means of a series of parallel and spaced apart fins 6 . The fins 6 and the proximity of the coils 2 and 4 allow heat conduction between them. Ambient air is driven between the fins 6 to contact the coils 2 and 4 which are symmetrically arranged in such a way that ambient air contacts equal portions of both coils 2 and 4 .
  • An advantage of using such coils 2 and 4 is that it substantially increases the efficiency of heating or cooling with only a small amount of supplemental energy.
  • Another advantage of such coils 2 and 4 is that a defrosting operation of the coils is more efficient and more economical than the prior art.
  • both coils 2 and 4 When both coils 2 and 4 are defrosted, they can now be operated in a cooling mode. As it can be appreciated, a defrosting operation can be performed even if the system partially operates in a cooling mode. In conventional thermal pump using a single coil, the defrost mode is energy consuming and expensive.
  • FIGS. 1 to 3 Another advantage of using the configuration shown in FIGS. 1 to 3 is that such interior heat exchanger coil unit does not take much more room than a single coil used in conventional apparatuses. Another advantage of the interior heat exchanger coil unit shown in FIGS. 1 to 3 is that it provides a greater heating or cooling capacity than conventional systems because, for the same amount of air circulating through the fins 6 , it can provide greater heating or cooling capacity, when compared with conventional systems.
  • FIGS. 4 to 8 there is shown an air conditioning system for conditioning ambient air in an environment 8 .
  • the air conditioning system comprises a first reverse cycle refrigeration apparatus 14 including a circuit having an interior portion 18 located inside the environment 8 and provided with a heat exchanger coil extending along a given path, and an exterior portion 20 located outside of wall 10 .
  • the heat exchanger coil described above is shown with more details as part of the heat exchanger coil unit 5 shown in FIGS. 2 and 3.
  • the air conditioning system also comprises a second reverse cycle refrigeration apparatus 16 including a circuit having an interior portion 22 located inside the environment 8 and provided with a heat exchanger coil distinct from the heat exchanger coil of the first reverse cycle refrigeration apparatus 14 and extending substantially along at least a portion of said given path, and an interior portion 24 located outside of wall 10 .
  • the heat exchanger coil of the second reverse cycle refrigeration apparatus 16 is shown with more details as part of the heat exchanger coil unit 5 shown in FIGS. 2 and 3.
  • the air conditioning system also comprises a group of fins extending between both each exchanger coil along said at least portion of the given path for increasing a heat exchange between both heat exchanger coils.
  • This group of fins 6 is shown more specifically in FIG. 2.
  • each of the reverse cycle refrigeration apparatuses 14 and 16 comprise a compressor 30 for compressing and driving fluid through its circuit, and a controllable valve 32 operatively connected to the compressor 30 for controlling flow direction of the fluid through a part of its circuit.
  • the part in question includes the interior portion 18 or 22 , located inside the environment, and a section of the exterior portion, located outside the environment.
  • a heat exchanger 34 is integrated to said section of the exterior portion.
  • First and second expansion valves 35 and 36 are integrated to the interior portion and to said section of the exterior portion.
  • a dryer 38 is preferably integrated to said section of the exterior portion.
  • Each of the heat exchanger coils comprises several coil sections mounted in parallel to one another and integrated into several coils units 5 , as it can be seen in the right portion of FIGS. 5 to 8 .
  • the method comprises the following steps: a) conditioning the ambient air of the environment 8 with the first reverse cycle refrigeration apparatus 14 including a circuit having an interior portion located inside the environment 8 and being provided with a heat exchanger coil extending along a given path, and an exterior portion located outside the environment 8 ; b) conditioning the ambient air of the environment with the second reverse cycle refrigeration apparatus 16 including a circuit having an interior portion located inside of the environment 8 and being provided with a heat exchanger coil distinct from the heat exchanger coil of the first reverse cycle refrigeration apparatus 14 and extending substantially along at least a portion of the given path and an exterior portion located outside of the environment 8 ; and c) exchanging heat between both each exchanger coil via a group of fins extending between along said at least a portion of said given path.
  • the idea has originated in adding a second coil in order to recuperate the energy still present in the air.
  • the inventor had the idea to integrate two separate coils into a single unit with common fins.
  • the inventor had also the idea to extend the second coil substantially along at least a portion of the path of the first coil.
  • a defrosting operation is generally carried out by means of electrical heating coils that are operated during periods going up to thirty minutes for conventional units. All of this energy that has to be supplied for defrosting can be very expensive because electricity rates usually penalize any excessive power demand.
  • the defrosting is carried out either by electrical coils or by inverting the gases within the thermo pump in order to make them produce heat in the coil until the frost disappears. It is easy to understand that the latter way of defrosting prevents the user from its normal operation mode during the defrosting operation.
  • the coil unit as shown in FIGS. 1 to 3 enables to defrost the refrigeration circuits by inverting fluid flow in one coil while the other still operates in its cooling mode.
  • This defrosting operation does not prevent the system to operate in a cooling mode, it simply reduces its cooling capacity slightly. This contributes equally to assure a greater comfort because the defrosting time is reduced to a few minutes. All of this defrosting process is carried out without additional electricity for electric heating elements.
  • the coil unit as shown in FIGS. 1 to 3 does not take that much more space than a single coil unit used in conventional machines.
  • the coil unit according to the present invention offers the advantage of providing a cooling or heating capacity which is much more than conventional system especially in the heating mode, which is particularly useful during winter season.
  • step a) comprises step of operating the first reverse cycle refrigeration apparatus 14 in a cooling mode.
  • step b) of the method comprises step of operating the second reverse cycle refrigeration apparatus 16 in a heating mode.
  • step c) the heat exchanger coil of the first reverse cycle refrigeration apparatus 14 is heated by the heat exchanger coil of the second reverse cycle refrigeration apparatus via the group of fins.
  • a defrosting operation can comprise the steps of operating the first reverse cycle refrigeration apparatus in a heating mode in step a), and the second reverse cycle refrigeration apparatus in a cooling mode in step b) during a few minutes; and then operating the first reverse cycle refrigeration apparatus in a cooling mode in step a), and the second reverse cycle refrigeration apparatus in a heating mode in step b) during a few minutes.
  • step a) comprises the step of operating the first reverse cycle refrigeration apparatus 14 in a heating mode.
  • step b) of the method comprises the step of operating the second reverse cycle refrigeration apparatus 16 in a cooling mode.
  • step c) the heat exchanger coil of the second reverse cycle refrigeration apparatus 16 is heated by the heat exchanger coil of the first reverse cycle refrigeration apparatus via the group of fins.
  • apparatus 14 When apparatus 16 has to be defrosted, apparatus 14 is set to operate into a heating mode to defrost the coils of the apparatus 16 . Then, for a short period of time, apparatus 14 operates in heating mode while apparatus 16 continues to operate in cooling mode to continue its air conditioning of the ambient air.
  • the unit shown in FIGS. 1 to 3 facilitates heat exchange between the heat exchanger coils of apparatuses 14 and 16 . Enough heat exchange is provided from one coil to the other for the defrosting which is performed during a period of time that is much shorter than conventional systems.
  • the operation modes of both apparatuses 14 and 16 may be reversed to ensure complete defrosting of both coils so that they may subsequently be set to resume their proper operation.
  • each exchanger coils are defrosted without substantially disturbing the cooling operation of the whole system.
  • Such defrosting operation prevents high temperature changes in the ambient air, which is not the case with conventional systems.
  • the heating or the cooling capacity can be substantially increased.
  • the present invention can be applied to roof top unit, chiller and most of the existing refrigeration systems.
  • step a) of the method can comprise step of operating the first reverse cycle refrigeration apparatus in a heating mode, while the second apparatus can be operated in any mode.
  • step a) can comprise the step of operating the first reverse cycle refrigeration apparatus 14 in a cooling mode, while the second apparatus 16 can be operated in any mode.
  • step a) comprises the step of operating the first reverse cycle refrigeration apparatus 14 in a cooling mode
  • step b) comprises the step of operating the second reverse cycle refrigeration apparatus 16 also in a cooling mode.
  • the refrigeration fluid which is in a liquid state exits from the exchanger 34 which operates as a condenser, towards the expansion valves 35 to be transformed into vapour under the effect of the valves.
  • the vapour is sent under the effect of the pressure towards the expansion valves 36 to be distributed in the heat exchanger coil units 5 .
  • both each exchanger coils share the same fins and are heated by the same flow of ambient air.
  • Liquid vapour is gradually transformed into hot gas directed towards the inversion valve 32 which will determine where the hot gas is sent, according to the setting of a thermostat.
  • This inversion valve 32 is used as a circulation controller which decides of the fluid flow according to the thermostat setting.
  • the refrigeration fluid which is in a gaseous state will be sent towards the compressor 30 .
  • the compressor can only compress a fluid in a gaseous state. Any liquid supply to its input will probably damage it.
  • the hot gas is compressed by the compressor 30 so that it can be treated by the exchanger 34 . Under the effect of the exchanger 34 , the fluid in a hot gaseous state becomes liquid by rejecting a major portion of its heat into the atmosphere.
  • the liquid by-passes the expansion valve 35 and is sent to expansion valve 36 .
  • Each of the expansion valves 35 and 36 is provided with a by-passing circuit with a directional valve to prevent fluid circulation in a wrong direction through the corresponding valve.
  • the apparatuses 14 and 16 operate in a cooling operation mode during several cycles until the cooling needs are satisfied.
  • step a) comprises the step of operating the first reverse cycle refrigeration apparatus 14 in a heating mode
  • step b) comprises the step of operating the second reverse cycle refrigeration apparatus 16 also in its heating operation mode.
  • the heat exchangers 34 operate now as evaporators.
  • the heat exchangers 34 which are outside operate as evaporators
  • the heat exchanger coils which are inside operate as condensers.
  • Liquid passes through the expansion valve 35 and becomes vapour under the effect of the valve. This vapour is sent to the exchanger 34 to be transformed into hot gas.
  • the fluid is in hot gas state, it is sent towards the compressor 30 via the inversion valve 32 to be pressurized.
  • the pressurized hot gas is sent, via inversion valve 32 , towards the heat exchanger coils which now operate as condensers.
  • the fluid in a hot gaseous state heats ambient air.
  • the fins of the coil units 5 improve heat exchange with ambient air.
  • the heat that is transferred to ambient air has the effect of cooling the fluid which turns gradually into liquid at the end of the heat exchanger coils.
  • the fluid in a liquid state goes back to the heat exchanger 34 , then goes through the expansion valve 35 where it is transformed into vapour.
  • the vapour becomes a hot gas which is ready to begin a new heating cycle as described above. It can be seen that the heat production costs are very low in that it is sufficient to circulate a liquid/gas fluid through the system and to operate external ventilators of heat exchanger 34 to produce heat.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
US10/339,360 2003-01-09 2003-01-09 Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air Abandoned US20040134218A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002415993A CA2415993A1 (fr) 2003-01-09 2003-01-09 Systeme de climatisation, echangeur thermique a serpentin interieur et methode de climatisation de l'air ambiant
US10/339,360 US20040134218A1 (en) 2003-01-09 2003-01-09 Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002415993A CA2415993A1 (fr) 2003-01-09 2003-01-09 Systeme de climatisation, echangeur thermique a serpentin interieur et methode de climatisation de l'air ambiant
US10/339,360 US20040134218A1 (en) 2003-01-09 2003-01-09 Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air

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US20040134218A1 true US20040134218A1 (en) 2004-07-15

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US10/339,360 Abandoned US20040134218A1 (en) 2003-01-09 2003-01-09 Air conditioning system, interior heat exchanger coil unit and method for conditioning ambient air

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CA (1) CA2415993A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120266616A1 (en) * 2011-04-22 2012-10-25 Lee Hoki Multi-type air conditioner and method of controlling the same
US8516838B1 (en) 2010-02-19 2013-08-27 Anthony Papagna Refrigeration system and associated method
US20140338381A1 (en) * 2011-09-13 2014-11-20 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus
US20140345309A1 (en) * 2011-09-13 2014-11-27 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus
JP2015108492A (ja) * 2013-12-06 2015-06-11 清水建設株式会社 空調システム
US20160223235A1 (en) * 2015-01-12 2016-08-04 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US10041706B2 (en) 2015-01-12 2018-08-07 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US10054348B2 (en) 2015-01-12 2018-08-21 Lg Electronics Inc. Air conditioner
JP2018185142A (ja) * 2009-07-28 2018-11-22 東芝キヤリア株式会社 熱源ユニット
EP4102152A1 (fr) * 2021-06-09 2022-12-14 LGL France S.A.S. Flux de contre-courant en mode ca et hp pour optimisation de la charge de pièce

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Publication number Priority date Publication date Assignee Title
US4193271A (en) * 1977-07-07 1980-03-18 Honigsbaum Richard F Air conditioning system having controllably coupled thermal storage capability
US5239839A (en) * 1991-06-17 1993-08-31 James Timothy W Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media
US5291738A (en) * 1992-12-07 1994-03-08 Edwards Engineering Corp. Vapor recovery apparatus and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193271A (en) * 1977-07-07 1980-03-18 Honigsbaum Richard F Air conditioning system having controllably coupled thermal storage capability
US5239839A (en) * 1991-06-17 1993-08-31 James Timothy W Thermal energy storage apparatus enabling use of aqueous or corrosive thermal storage media
US5291738A (en) * 1992-12-07 1994-03-08 Edwards Engineering Corp. Vapor recovery apparatus and method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018185142A (ja) * 2009-07-28 2018-11-22 東芝キヤリア株式会社 熱源ユニット
US8516838B1 (en) 2010-02-19 2013-08-27 Anthony Papagna Refrigeration system and associated method
US20120266616A1 (en) * 2011-04-22 2012-10-25 Lee Hoki Multi-type air conditioner and method of controlling the same
US9797648B2 (en) * 2011-09-13 2017-10-24 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus for use in a defrosting operation
US20140345309A1 (en) * 2011-09-13 2014-11-27 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus
US9835368B2 (en) * 2011-09-13 2017-12-05 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus for use in a defrosting operation
US20140338381A1 (en) * 2011-09-13 2014-11-20 Mitsubishi Electric Corporation Refrigerating and air-conditioning apparatus
JP2015108492A (ja) * 2013-12-06 2015-06-11 清水建設株式会社 空調システム
US20160223235A1 (en) * 2015-01-12 2016-08-04 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US10041706B2 (en) 2015-01-12 2018-08-07 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
US10054348B2 (en) 2015-01-12 2018-08-21 Lg Electronics Inc. Air conditioner
US10527333B2 (en) * 2015-01-12 2020-01-07 Lg Electronics Inc. Air conditioner and method for controlling an air conditioner
EP4102152A1 (fr) * 2021-06-09 2022-12-14 LGL France S.A.S. Flux de contre-courant en mode ca et hp pour optimisation de la charge de pièce

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Publication number Publication date
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