EP3071902A1 - Dispositif à fluide frigorigène pour l'augmentation du rendement thermodynamique - Google Patents
Dispositif à fluide frigorigène pour l'augmentation du rendement thermodynamiqueInfo
- Publication number
- EP3071902A1 EP3071902A1 EP14824056.7A EP14824056A EP3071902A1 EP 3071902 A1 EP3071902 A1 EP 3071902A1 EP 14824056 A EP14824056 A EP 14824056A EP 3071902 A1 EP3071902 A1 EP 3071902A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bulge
- fluid
- condenser
- compressor
- pump
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 69
- 239000003507 refrigerant Substances 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 39
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims abstract description 6
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000010696 ester oil Substances 0.000 abstract 1
- 229920005862 polyol Polymers 0.000 abstract 1
- 150000003077 polyols Chemical class 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 67
- 239000007789 gas Substances 0.000 description 26
- 239000000839 emulsion Substances 0.000 description 13
- 239000012071 phase Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 239000007791 liquid phase Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 235000005156 Brassica carinata Nutrition 0.000 description 3
- 244000257790 Brassica carinata Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006163 transport media Substances 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression 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
- 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
- F25B30/00—Heat pumps
-
- 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
- F25B31/00—Compressor arrangements
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
Definitions
- the invention relates to a heat pump, and in particular to improving the thermodynamic efficiency of a heat pump.
- the present invention aims to overcome the disadvantages of the state of the art.
- the present invention therefore relates to a heat pump comprising a closed circuit containing a refrigerant and a lubricant, the closed circuit comprising a fluid compressor and a fluid return circuit to the compressor, the compressor extending in the closed circuit between a fluid inlet and a fluid outlet, the return circuit extending in the closed circuit, complementarily to the compressor, between the fluid outlet and the fluid inlet, the return circuit comprising a condenser, a pressure reducer and an evaporator, said return circuit comprising a first pipe extending between the fluid outlet and the condenser, a second pipe extending between the condenser and the expander, a third pipe extending between the expander and the evaporator, and a fourth conduit extending between the evaporator and the fluid inlet, said closed circuit comprising a first bulge of a return line pipe containing tubules, the fluid comprising a mixture of a first freon R32 (difluoromethane), a second freon R125
- the closed circuit comprises a second bulge of a return circuit line
- said first bulge is disposed on said first conduit
- said second bulge is disposed on the second conduit
- the synthetic polyolester oil is of ISO VG 32 class
- the synthetic polyolester oil of class ISO VG 32 is of trade name Emkarate ® RL32-3 MAF;
- the refrigerant is a R407C freon
- the refrigerant is a R407A freon
- the pipes are arranged vertically;
- the first bulge is arranged vertically
- the first bulge is arranged vertically and in ascending fluid
- the second bulge is arranged vertically
- the invention also relates to:
- a use of a heat pump above for purposes of heating an enclosure, in which the evaporator is placed in thermal contact with the outside of the enclosure and the condenser is placed in thermal contact with inside the enclosure to improve the thermodynamic efficiency of the heating operation;
- a use of a heat pump above for cooling purposes of an enclosure in which the evaporator is placed in thermal contact with the inside of the enclosure and the condenser is placed in thermal contact with the chamber; outside the enclosure to improve the thermodynamic efficiency of the refresh operation.
- said refrigerant is mounted in the first bulge.
- FIG. 1 schematically represents a heat pump according to an advantageous embodiment of FIG. the present invention.
- Heat pump' means a thermodynamic device for transferring heat from a source cooled by the heat pump by extracting heat from that source (or cold source), in contact with an evaporator of the pump, to a source heated by the pump by evacuation of heat towards this source (or hot source) in contact with a condenser of the pump.
- a pump also comprises a compressor powered by an external energy source making it possible to transfer heat from the cold source to the hot source, in accordance with the second principle of thermodynamics and comprises an expansion valve for reducing the pressure imposed on the fluid, by the compressor.
- the condenser and the evaporator which are the heat exchangers of the pump, are connected by two refrigerant transport branches or pipes, forming a closed circuit comprising, in series in the circuit, in one of the branches the compressor and, in series in the circuit, in the other branch, the regulator.
- the closed fluidic circuit contains, in a sealed manner, refrigerant fluid, flowing in the circuit by the compressor and circulating in particular from the evaporator to the condenser, through the compressor, and flowing from the condenser to the evaporator, through the regulator.
- the pump is adapted to take heat from the cold source, by evaporation of this fluid in the evaporator, to transport the heat to the hot source of the evaporator to the condenser through the compressor, and to transfer this heat to the source hot, by condensation of the fluid in the condenser.
- Reversible heat pump a heat pump operating between a cold source and a hot source in which an additional known system of fluidic valves makes it possible to switch from a heating mode of the hot source, in contact with a first exchanger, by a cold source, in contact with a second exchanger, a cooling mode of the hot source, by inversion of the direction of circulation of the fluid in the circuit, or by reversal of the order of the exchangers in the circuit for the same direction fluid circulation.
- a reversible heat pump requires heat transport and not a creation
- COP a coefficient of performance Q / W characterizing the thermodynamic efficiency of a pump by an energy ratio between the energy Q, in thermal form transferred by the pump from the cold source to the hot source and the energy W, in the form of work, usually electrical, necessary for the operation of the pump.
- a high figure characterizes an efficient pump. This figure may be greater than one without contradicting the second principle of thermodynamics.
- the freons will be referenced in the request either by their chemical formula or by the name "Freon” followed by an abc number of the classification, by F followed by an abc number, or by R followed by abc.
- Freon 134a or F134a or R134a which is 1,1,1,2-tetrafluoroethane
- Freon R407C which is a mixture typically of 23% of R32, 25% of R125 and 52% of R134a (Percentages by mass), R407A (20%, 40%, 40%) and the R407F (30%, 30%, 40%). All the mixtures of R32, R125 and R134 are designated by "family of R407 freons", subfamily of the family consisting of all the freon among all the refrigerants or refrigerants. R407A is notably less rich in R134a than R407C.
- 'Synthetic oils' or 'POE oils' means synthetic polyolester oils used for the lubrication of the compressor of a heat pump, in particular for heating or cooling homes, using R32, R125 and R134a in the composition of the refrigerant used by this pump. These oils are perfectly miscible, at the evaporator and condensing temperatures of the pump with R32, R125 and R134a, to allow a return of oil mixed with these freon in liquid phase, from the condenser to the evaporator of the pump.
- Freons R32, R125 and R134a in the gas phase are also soluble in these oils, so as to ensure a return in vapor phase of the freon of the evaporator to the compressor of the pump and to favor at best the transport of the oil , in particular in the form of an oil mist loaded with freon between the compressor and the heat exchangers of the pump, that is to say the assembly consisting of two elements that are the evaporator and the pump condenser.
- the closed circuit comprises the fluid compressor 1 and a fluid return circuit to the compressor.
- the compressor extends in the closed circuit between the fluid inlet and the fluid outlet, the return circuit extending in the closed circuit, complementarily to the compressor, between the fluid outlet and the fluid inlet.
- the return circuit comprises condenser 2, expander 3 and evaporator 4.
- Said return circuit thus comprises a first duct extending between the fluid outlet and the condenser, a second duct extending between the condenser and the condenser. pressure reducer, a third conduit extending between the expander and the evaporator, and a fourth conduit extending between the evaporator and the fluid inlet.
- said closed circuit comprises a first bulge 5 of a return circuit line containing tubes 50, the fluid comprising a mixture of a first freon R32 (difluoromethane), a second freon R125 (pentafluoroethane) and a third freon R134a
- the lubricant comprises a polyolester synthetic oil.
- FIG. 1 shows a heat pump provided with two pipe bulges: a first pipe bulge 5, with pipes 50, disposed between a fluid outlet compressor 1 of the pump and a condenser 2 of the pump and a second bulge 6 without tubing disposed between the condenser 2 and the expander 3 of the pump.
- the pump also has an evaporator 4.
- a single bulge is however also possible.
- the invention can also be carried out with a model AIRMEC ® heat pump model ANF 50 power 15kW or ANF 100 power equal to 35kW.
- the invention is therefore not limited to a particular manufacturer or model.
- the pump can utilize a fourteen millimeter (14mm) ID copper pipe assembly forming a gas and liquid tight closed circuit with the closed circuit bathed in the atmosphere.
- a reference compressor ZB38KCE 1 having a fluid inlet and a fluid outlet.
- the first tubular bulge is constituted, on a first pipe of 14mm, by a local increase in the internal diameter of the pipe or first bulge.
- This first bulge 5 contains internal tubes 50, for example seven tubes of internal diameter 5 mm for an outside diameter of 8.5 mm, surrounded by the first bulge of the pipe.
- the inner diameter of the bulge is adapted to grip the tubes and the thickness of the bulge is adapted to withstand the maximum pressure specified for the fluid in that portion of the pump.
- the inner diameter of the bulge is for 7 tubes arranged compactly, equal to 3 times the outer diameter of a tube is about 25.5mm.
- this inner diameter of the bulge can be deduced as being the outer diameter of the tubes, tightly compacted.
- the condenser known element, is encountered in the circuit following the first bulge.
- the second bulge is designed to operate in the liquid phase for the refrigerant and the oil, it is for example identical to the first bulge but may or may not include tubing, they have not been recognized as essential to obtain the effect of the invention with the second bulge present in the circuit in addition to the first bulge.
- the second bulge is followed downstream of the expander.
- the expander is a known element, operating in the mainly liquid phase, at its inlet, and designed to produce a two-phase mixture of gas and liquid in the normal operation of the heat pump of the invention.
- the expander is followed downstream of the evaporator, known element.
- the pump In use in heating mode, the pump is brought into contact at the evaporator with the atmosphere surrounding an enclosure to be heated and at the condenser with a heating circuit of the enclosure.
- the pump In use in cooling mode, the pump is brought into contact with the evaporator with an enclosure to be cooled and at the condenser with the atmosphere surrounding the enclosure.
- Known fluidic valves can be used to switch on a user action from a heating mode to a cooling mode, if the pump according to the invention is to be reversible.
- Freon chosen for all pumps is R407C or R407A Freon and the oil is EM KARATE ® RL32-3 MAF oil, miscible with Freon selected at all operating temperatures.
- refrigerant or refrigerant and an oil that are miscible with each other use a refrigerant or refrigerant and an oil that are miscible with each other.
- the refrigerant family constituted by R407 denomination freons and oils miscible with the freons of this family constitute in particular a set of fluids that can be used with the invention.
- the general principle of the invention is estimated at the date of the patent to be the capacity to transport the oil of a heat pump, in the form of an emulsion of oil drops, conducive to increasing the heat exchange in the condenser and in the evaporator of the pump.
- the means of the invention which are the first and the second bulge thus tend to regenerate or maintain this emulsion in its form conducive to improve the operation of heat exchangers (condenser and evaporator) of the pump.
- drops taken as a synonym for bubbles (containing gas) in a gaseous transport medium or drops taken as synonymous with "anti-bubbles" (oil bubbles containing gas) in a liquid transport medium, is considered as providing nucleation sites for the condensation of the transport medium or the evaporation of this medium, favoring heat exchange, during its phase changes in the pump exchangers.
- This emulsion is estimated, in the gaseous phase, to be a mist of droplets forming a "monodispersed" oil emulsion, in a gaseous phase, (that is to say of droplets whose diameter values are strongly centered on a value common) of sufficient life to reach the condenser and improve heat exchange.
- the invention therefore uses a first means of forming an oil mist between the compressor and the condenser.
- a particular means is thus a means of imposing a depression on oil drops having absorbed a transport refrigerant gas because of the solubility of the gas in the oil and causing the appearance of gas bubbles in the drops capable of bursting. in finer droplets.
- This emulsion is estimated, in the liquid phase, to be a mixture of oil droplets forming a "monodispersed" oil emulsion, in a liquid phase, of sufficient lifetime to reach the expander, pass through it, reach the evaporator and to improve the heat exchange, to return finally to the compressor regularly over time and in the form of an oil mist of regular oil drop diameter and improve the isentropic efficiency by improved lubrication, compared to a commercial pump.
- the invention thus uses to improve the COP of a heat pump, a first means of forming an oil mist between the compressor and the condenser and a second means of forming a dispersion of oil drops in the liquid phase between the condenser and the compressor, these drops may burst into droplets or bubbles passing through the regulator and reach the evaporator.
- the elements of the invention that are the first tubular bulge and the second bulge can thus be adapted by those skilled in the art to achieve this goal.
- thermodynamic efficiency or COP of the entire heat pump using one or two bulges, a particular refrigerant and a fluid miscible oil was not expected in the prior art.
- the effect obtained makes it possible to envisage heating or cooling uses with a pump provided with at least one bulge. This improvement is obtained without increasing the temperature at the terminals of the first bulge used alone, which therefore does not operate as a secondary heat source.
- the first bulge is composed along its length, by traversing the closed circuit from the compressor fluid outlet on the first pipe joining the compressor fluid outlet to the condenser, a first zone of increase in inner diameter of the driving, a second zone of constant inner diameter of the pipe and a third zone of decrease in inner diameter of the pipe.
- the change in diameter of the first zone may be effected by a first cone whose apex angle allows, for the normal fluidic operating conditions of the pump, to cause a detachment of the flow lines of the fluid passing through the pump.
- the diameter change of the third zone may be effected by a second cone whose apex angle allows, for the normal fluidic operating conditions of the pump not to cause a detachment of the flow lines of the fluid flowing the pump.
- the second zone of the first bulge will advantageously be arranged vertically, when the refrigerant is a mixture of freons and oil.
- This area will thus have a fireplace layout or a chimney or vertical duct function for the first bulge, which normally operates with a gaseous refrigerant and drops of oil.
- This arrangement will allow a heat transfer to the condenser and not a production of heat that does not reach the condenser by increasing the life of the Freon emulsion and oil drops after passing through the fluid of the first bulge and allowing them to reach the condenser despite coalescence.
- Such a vertical structure allows, for a soluble freon or a mixture of oil-soluble freon present in drops transported with the gas, numerous simultaneous effects resulting in creating or regenerating a stable emulsion in time of gas and oil, such as that conventionally produced by the compressor, at its discharge outlet, and in which the drops are usually "polydispersed" (ie largely variable around a central value) in diameter.
- a change in the circulating composition of the mixture initially introduced into the fluidic circuit may be an indication of the operation of the invention.
- freon other than a mixture of R32, R125 and R134a may also be used according to the invention insofar as it would be found an increase in the thermal power of the condenser to the introduction of a first bulge in the fluid circuit of a pump operating with this particular freon.
- the skilled person in the presence of such an increase can adjust the length of the tubes or adjust the distance separating the first bulge of the condenser, in the fluid circuit, to optimize the increase in power observed in the condenser, for example in measuring the temperature of a hot water outlet of a heating circuit in thermal contact with the condenser. It may also vary the verticality of the tubes by admitting an angle maintaining a slope to the tubes allowing the flow of oil down, maintaining an effect on the thermal power of the condenser relative to a strict verticality.
- R407C, R407A and R407F are as follows:
- this structure is designed to be a means of regularly dividing the drops of oil with the result of forming a sufficiently stable emulsion of drops and gas, in terms of lifetime of the drops, to enable them to reach the condenser and form nucleation sites improving the heat exchange in the condenser and the thermodynamic efficiency of the pump.
- the same general inventive idea of a means of forming an emulsion will be applied to the design of the first tubular bulge but instead of an emulsion of drops in one or more gases, design the first bulge to form an emulsion of bubbles in the gas or gases.
- a mixed mode for which an emulsion of drops but also oil bubbles is formed by the first bulge between the oil and the freons present in the first pipe is not excluded depending on the properties of relative surface tension of the oil and freons at the temperature and operating pressure of the fluid in the first pipe.
- the invention has been tested with mixtures of the R32, R125 and R134a freons induced by an introduction of R407C and a particular EM KARATE ® RL32-3 MAF oil in the circuit of a pump modified by the first bulge arranged vertically and having the second bulge.
- a compressor (referenced ZB38KCE) is used.
- the oil is considered in liquid form throughout the closed circuit at the mentioned temperatures and pressures.
- the mixture of R32, R125 and R134a is gaseous at the outlet. Therefore, in normal operation in this embodiment, there is no increase in temperature at the outlet of the first bulge with respect to its inlet, and this bulge therefore does not function as a source of heat.
- the mixture of R32, R125 and R134a is liquid at the outlet.
- the mixture of R32, R125 and R134a is liquid at the outlet, with two-phase liquid-gas periods, where bubbles appear. Therefore, in normal operation in this embodiment, there is no increase in temperature at the outlet of the second bulge with respect to its inlet, and this bulge therefore does not function as a source of heat.
- the mixture of R32, R125 and R134a is biphasic liquid-gas output.
- the mixture of R32, R125 and R134a is gaseous at the outlet.
- the COP gains are comparable to those of an AIRWELL ® brand machine mentioned above for the first mode, over the temperature range of -7 ° C to + 7 ° C.
- the invention is susceptible of industrial application in the field of heat pumps and air conditioners.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Lubricants (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1361503A FR3013812B1 (fr) | 2013-11-22 | 2013-11-22 | Pompe a chaleur. |
PCT/FR2014/052987 WO2015075393A1 (fr) | 2013-11-22 | 2014-11-21 | Dispositif a fluide frigorigene pour l'augmentation du rendement thermodynamique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3071902A1 true EP3071902A1 (fr) | 2016-09-28 |
Family
ID=50473400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14824056.7A Pending EP3071902A1 (fr) | 2013-11-22 | 2014-11-21 | Dispositif à fluide frigorigène pour l'augmentation du rendement thermodynamique |
Country Status (10)
Country | Link |
---|---|
US (1) | US10274234B2 (fr) |
EP (1) | EP3071902A1 (fr) |
JP (1) | JP6364090B2 (fr) |
KR (1) | KR102246125B1 (fr) |
CN (1) | CN106415155B (fr) |
AU (1) | AU2014351648B2 (fr) |
BR (1) | BR112016011701B1 (fr) |
FR (1) | FR3013812B1 (fr) |
RU (1) | RU2677315C1 (fr) |
WO (1) | WO2015075393A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6315071B1 (ja) * | 2016-11-28 | 2018-04-25 | ダイキン工業株式会社 | 冷媒組成物の移充填方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5040122Y2 (fr) * | 1971-10-20 | 1975-11-17 | ||
US4214453A (en) * | 1979-02-09 | 1980-07-29 | Barrow Billy E | Injector cooler controls |
US4478050A (en) | 1982-11-19 | 1984-10-23 | Hussmann Corporation | Oil separation for refrigeration system |
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2013
- 2013-11-22 FR FR1361503A patent/FR3013812B1/fr active Active
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- 2014-11-21 US US15/038,209 patent/US10274234B2/en active Active
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- 2014-11-21 RU RU2016124553A patent/RU2677315C1/ru active
- 2014-11-21 AU AU2014351648A patent/AU2014351648B2/en active Active
- 2014-11-21 KR KR1020167016353A patent/KR102246125B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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CN106415155A (zh) | 2017-02-15 |
FR3013812B1 (fr) | 2019-03-15 |
KR102246125B1 (ko) | 2021-04-30 |
KR20160089424A (ko) | 2016-07-27 |
CN106415155B (zh) | 2020-06-26 |
BR112016011701A2 (fr) | 2017-08-08 |
BR112016011701B1 (pt) | 2022-03-22 |
FR3013812A1 (fr) | 2015-05-29 |
WO2015075393A1 (fr) | 2015-05-28 |
RU2677315C1 (ru) | 2019-01-16 |
AU2014351648A1 (en) | 2016-06-09 |
JP2016539313A (ja) | 2016-12-15 |
JP6364090B2 (ja) | 2018-07-25 |
RU2016124553A (ru) | 2017-12-27 |
US20160290687A1 (en) | 2016-10-06 |
AU2014351648B2 (en) | 2018-10-18 |
US10274234B2 (en) | 2019-04-30 |
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