FR2502763A2 - Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser - Google Patents

Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser Download PDF

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Publication number
FR2502763A2
FR2502763A2 FR8106498A FR8106498A FR2502763A2 FR 2502763 A2 FR2502763 A2 FR 2502763A2 FR 8106498 A FR8106498 A FR 8106498A FR 8106498 A FR8106498 A FR 8106498A FR 2502763 A2 FR2502763 A2 FR 2502763A2
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France
Prior art keywords
evaporator
heat pump
condenser
plates
underfloor
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Granted
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FR8106498A
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French (fr)
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FR2502763B2 (en
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Priority to FR8106498A priority Critical patent/FR2502763A2/en
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Granted legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • F24D15/04—Other domestic- or space-heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/14—Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • 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
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/02—Heat exchange conduits with particular branching, e.g. fractal conduit arrangements
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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]
    • 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]
    • Y02B30/12—Hot water central heating systems using heat pumps
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Building Environments (AREA)

Abstract

The heat pump has its evaporator located outside the building. The evaporator is made up of several plates (21), which consist of two pressed sheets welded together and forming a fluid circuit. The plates are connected in parallel with an inlet connection (30), and outlet (29). The refrigerant is evaporated by air flowing over the plates from top to bottom. The refrigerant gas is compressed and cooled in the condenser which consists of an underfloor heating coil in the building.

Description

L'invention a pour objet une installation de chauffage d'une habitation par pompe à chaleur. The invention relates to an installation for heating a home with a heat pump.

Elle concerne un appareil dans lequel la chaleur est pui- sée à l'air extérieur au moyen d'un évaporateur formé de plaques verticales dans lesquelles la circulation de l'air s'effectue par convection naturelle. It relates to an apparatus in which heat is drawn into the outside air by means of an evaporator formed from vertical plates in which the air circulation takes place by natural convection.

L'évaporateur est placé à l'extérieur du bâtiment que l'on souhaite à chauffer.The evaporator is placed outside the building that you want to heat.

Le circuit du fluide de la pompe à chaleur comprend un compresseur, un détendeur et un condenseur, ce dernier étant soit à circulation d'air, soit à circulation d'eau soit encore à diffusion directe en plancher chauffant. L'ensemble des dispositions selon l'invention permet d'étendre l'application au chauffage centralisé de batiments d'habitation ou autres.The heat pump fluid circuit includes a compressor, a pressure reducer and a condenser, the latter being either air circulation, water circulation or direct diffusion in underfloor heating. All of the arrangements according to the invention make it possible to extend the application to centralized heating of residential buildings or the like.

L'invention concerne des formes de réalisation de l'C'vaporateur extérieur et du condenseur. Dans la description qui suit, faite à titre d'exemple, on se réfère aux dessins annexés dins lesquels
La figure i est une vue schématique de face d'une plaque faisant parte de ltévaporateur,
La figure 2 est une vue d'ensemble de l'évaporateur,
La figure 3 est une vue analogue à la figure 2, mais pour une autre forme de réalisation,
La figure 4 est une vue du condenseur placé dans un plancher.The invention relates to embodiments of the external evaporator and the condenser. In the description which follows, given by way of example, reference is made to the appended drawings in which
FIG. I is a schematic front view of a plate forming part of the evaporator,
FIG. 2 is an overall view of the evaporator,
FIG. 3 is a view similar to FIG. 2, but for another embodiment,
Figure 4 is a view of the condenser placed in a floor.

L'évaporateur E de la pompe à chaleur, est constitué pnr des plaques 21 (figure 1) du type laminées à circuits intégrés formées par l'assemblage de deux feuilles 22 réservant entre elles un circuit de fluide frigorigène comprenant des branches parallèles 23, 33 reliant des voies transversales d'entrée et de sortie 34, 24 avec à l'autre extrémité, plusieurs voies transversales 25, 26, 27, 23, l'entrée et la sortie du fluide se faisant par les embouts 3U, 29.The evaporator E of the heat pump consists of plates 21 (FIG. 1) of the laminated type with integrated circuits formed by the assembly of two sheets 22 reserving between them a refrigerant circuit comprising parallel branches 23, 33 connecting transverse inlet and outlet paths 34, 24 with at the other end, several transverse paths 25, 26, 27, 23, the inlet and outlet of the fluid being made by the nozzles 3U, 29.

De telles plaques 211, 212,...21n sont placées verticalement et parallelement de manière à former des cheminées verticales (figurc2)
Les plaques sont espacées de quelques centimètres, fin de laisser la libre circulation de l'air extérieur sur celles-ci.Such plates 211, 212, ... 21n are placed vertically and parallel so as to form vertical chimneys (figurc2)
The plates are spaced a few centimeters apart, in order to allow the free circulation of outside air on them.

Un chassies 42, 43 permet la rigidité de l'ensemble évaporateur E.A flush 42, 43 allows the rigidity of the evaporator assembly E.

L'admission de l'évaporateur en fluide frigorigène dr1rndu provcnant du détendeur se fait par l'intermédiaire d'un raccord d'cntréc 39 relié à un distributeur 40 par une tuyauterie 38 l fluide - tant ensuite réparti dans chaque plaque aux entrées 301, 302.. .30
n par des brins 411, 412.. 41n .Après évaporation, je Fluide frirlo- rigène sort de chacune des plaques par les tubulures 291, , 292...29n
Un collecteur 35 les relie à une canalisation 36 à laquelle aboutit un raccord 37 qui permet le raccordement à l'aspir2tion du compresseur de la pompe à chaleur.The admission of the evaporator in dr1rndu refrigerant from the expansion valve is done by means of an inlet 39 connected to a distributor 40 by a 38 l fluid piping - so then distributed in each plate at the inputs 301, 302 ... 30
n by strands 411, 412 .. 41n. After evaporation, I Fluid frirlo-rigene leaves each of the plates by the pipes 291,, 292 ... 29n
A manifold 35 connects them to a pipe 36 to which a connector 37 leads which allows the connection to the suction of the compressor of the heat pump.

Dans la forme de réalisation montrée sur la figure 3, l'évaporateur
E est constitué de plaques 211, 212... 21 placées verticalement
n et parallèlement de manière à former des cheminées verticales chaque plaque est cintrée en son milieu 4412 442 443...44n . Les bords 31 et 32 des plaques sont ainsi rapprochées.In the embodiment shown in Figure 3, the evaporator
E consists of plates 211, 212 ... 21 placed vertically
n and in parallel so as to form vertical chimneys each plate is curved in the middle 4412 442 443 ... 44n. The edges 31 and 32 of the plates are thus brought together.

Cette disposition permet de limiter le nombre de plaques de I'éva- porateur et par suite le nombre de brins d'alimentation 41, de tubulures d'admission 30 et de sortie 29. Un chassis 42, 43 permet d'assurer une bonne tenue à l'ensemble évaporateur et de maintenir le bas des plaques à quelques dizaines de centimètre du sol, afin de faciliter l'écoulement de l'air extérieur.This arrangement makes it possible to limit the number of plates of the evaporator and consequently the number of supply strands 41, of inlet pipes 30 and of outlet 29. A chassis 42, 43 makes it possible to ensure good resistance. to the evaporator assembly and keep the bottom of the plates a few tens of a centimeter from the ground, in order to facilitate the flow of outside air.

Le fonctionnement de la pompe à chaleur est le suivant
Elle fonctionne à la manière habituelle suivant le cycle de Carnot, le fluide frigorigène, habituellement du R22, du R500 ou R12 passant le l'état liquide à l'état gazeux et vice versa, la chaleur latente dégagée par condensation étant utilisée pour le chauffage et la chaleur de l'air extérieur étant mise à profit pour l'évaporation du fluide contenu dans la tubulure interne des plaques constitutives de l'évaporateur E.The operation of the heat pump is as follows
It works in the usual way according to the Carnot cycle, the refrigerant, usually R22, R500 or R12 passing the liquid state to the gaseous state and vice versa, the latent heat released by condensation being used for heating and the heat of the outside air being used for the evaporation of the fluid contained in the internal tubing of the constituent plates of the evaporator E.

Le bâtiment est chauffé par le condenseur qui peut être de divers types, à eau, à air ou à diffusion directe.The building is heated by the condenser which can be of various types, water, air or direct diffusion.

Le fluide froid circulant dans l'évaporateur par exemple à -100C emprunte de la chaleur à l'air extérieur, qui est par exemple à -5 0C, ainsi qu'au rayonnement solaire éventuel qui vient frapper la surface de ltévaporateur. The cold fluid circulating in the evaporator for example at -100C borrows heat from the outside air, which is for example at -5 0C, as well as possible solar radiation which strikes the surface of the evaporator.

Le dit air circule le long des plaques 21, de haut en bas, en les deux faces de ces dernières, la configuration verticale et en cheminées de l'évaporateur étant favorables à cette circulation p;ir convection naturelle de l'air extérieur et ainsi à l'échange de chaleur entre l'air extérieur et le fluide-contenu dsns les dites plaques.Said air circulates along the plates 21, from top to bottom, in the two faces of the latter, the vertical configuration and in chimneys of the evaporator being favorable for this circulation p; ir natural convection of the outside air and thus heat exchange between the outside air and the fluid-content in said plates.

Les raccords 37 et 39 de l'évaporateur E permettant un montage de la pompe à chaleur rapide et sans fuite de fluide, sans charge en fluide ni tirage au vide, les raccords étant à la fois étanches et préchargés.The connections 37 and 39 of the evaporator E allowing a rapid assembly of the heat pump and without leakage of fluid, without charge of fluid or evacuation, the connections being both sealed and preloaded.

La circulation naturelle de l'air sur ltévaporateur E permet d'éviter la présence consommatrice d'un ventilateur de brassage et d'allonger énormément les séquences de dégivrage. L'expérience a montré que les séquences sont de l'ordre de 8 jours au lieu de une heure pour les évaporateurs ventilés. L'ensemble améliore de plus de 20 % le.coefficient de performance de la pompe à chaleur.The natural circulation of air on evaporator E avoids the consuming presence of a stirring fan and considerably lengthens the defrosting sequences. Experience has shown that the sequences are of the order of 8 days instead of an hour for ventilated evaporators. The whole improves by more than 20% the performance coefficient of the heat pump.

Dans une forme de réalisation, le condenseur est constitué d'un ensemble de tuyauteries 45 formant serpentin et noyées dans le plancher du local à chauffer. La figure 4 illustre une telle réalisation.In one embodiment, the condenser consists of a set of pipes 45 forming a coil and embedded in the floor of the room to be heated. Figure 4 illustrates such an embodiment.

Les tubes 451 452 453... sont posées au moment de la construction du bâtiment sur un isolant 48. Une chappe de béton 47 est coulée ensuite sur les tubes 451 452 453... qui forment le condenseur de la pompe à chaleur. Un revêtement de sol 46 peut être appliqué sur la chappe47.The tubes 451 452 453 ... are placed during the construction of the building on an insulation 48. A concrete screed 47 is then poured on the tubes 451 452 453 ... which form the condenser of the heat pump. A floor covering 46 can be applied to the chappe47.

L'isolant 48 est posé sur un support 49 et 50 qui peut être du béton. L'ensemble de cette disposition de la figure 4 permet le chauffage du local par plancher chauffant. Cette disposition évitant un échangeur intermédiaire, ce qui améliore le coefficient de performance de la pompe à chaleur. The insulation 48 is placed on a support 49 and 50 which may be concrete. The whole of this arrangement in FIG. 4 allows the premises to be heated by underfloor heating. This arrangement avoids an intermediate exchanger, which improves the coefficient of performance of the heat pump.

Claims (4)

- REVENDICATIONS- CLAIMS 1. Installation de chauffage à l'aide d'une pompe à chaleur dans laquelle l'évaporateur est placé à l'extérieur, caractérisée en ce que l'évaporateur est constitué de plaques verticales disposes de manière à former des cheminées ouvertes à leur parties inférieures et supérieures permettant une circulation naturelle dc l'air extérieur de haut en bas. 1. Heating installation using a heat pump in which the evaporator is placed outside, characterized in that the evaporator consists of vertical plates arranged so as to form chimneys open to their parts lower and upper allowing natural circulation of outdoor air from top to bottom. 2. Installation de chauffage selon la revendication 1 caractérisée en ce que les plaques formant l'évaporateur sont pl- nes. 2. Heating installation according to claim 1 characterized in that the plates forming the evaporator are flat. 3. Installation de chauffage selon la revendication 1 caractérisée en ce que les plaques formant l'évaporateur sont cintrées. 3. Heating installation according to claim 1 characterized in that the plates forming the evaporator are curved. 4..Installation de chauffage selon la revendication 1  4..Heating installation according to claim 1 caractérisée en ce que le condenseur est constitué par des tubulures noyées dans le plancher des locaux à chauffer.  characterized in that the condenser consists of pipes embedded in the floor of the premises to be heated.
FR8106498A 1981-03-30 1981-03-30 Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser Granted FR2502763A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8106498A FR2502763A2 (en) 1981-03-30 1981-03-30 Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8106498A FR2502763A2 (en) 1981-03-30 1981-03-30 Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser

Publications (2)

Publication Number Publication Date
FR2502763A2 true FR2502763A2 (en) 1982-10-01
FR2502763B2 FR2502763B2 (en) 1984-12-07

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FR8106498A Granted FR2502763A2 (en) 1981-03-30 1981-03-30 Heat pump for domestic use - has external air-to-liquid evaporator and underfloor condenser

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538510A1 (en) * 1982-12-28 1984-06-29 Persohn Paul Method and device for integrated thermodynamic heating with a small pressure difference
FR2549585A1 (en) * 1983-07-21 1985-01-25 Axergie Sa Evaporator for an installation with a closed thermodynamic loop for the flow of a working fluid, and installation incorporating this evaporator
FR2566107A1 (en) * 1984-06-15 1985-12-20 Rossignol Sa Panel for heat exchanger, resulting exchanger and applications, particularly for heat pumps
EP0918199A2 (en) * 1997-11-21 1999-05-26 BSH Bosch und Siemens Hausgeräte GmbH Evaporator
FR2917158A1 (en) * 2007-06-06 2008-12-12 Airpac Sarl Heat pump e.g. water/water type pump, installation for direct solar heating flooring system, has atmospheric sensors installed in barrier, where antigel liquid circulates in sensors and space arranged between channels to pass air outside
FR3085467A1 (en) * 2018-09-05 2020-03-06 Bernier Developpement HEAT PUMP WITH DOUBLE OR MULTIPLE ATMOSPHERIC SENSORS

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH131194A (en) * 1927-09-23 1929-01-31 Gabriel Zwicky Evaporator with flooding operation for small refrigeration machines.
FR711574A (en) * 1930-02-19 1931-09-12 Thomson Houston Comp Francaise Improvements to refrigeration cabinets and their evaporators
US2894731A (en) * 1955-07-18 1959-07-14 Gen Motors Corp Refrigerating apparatus
CH380176A (en) * 1959-09-29 1964-07-31 Bbc Brown Boveri & Cie Cooling device for the cargo space of motor vehicles
DE1551994A1 (en) * 1967-09-20 1970-03-19 Peter Rabien Heat pump for heating and hot water preparation
FR2431664A1 (en) * 1978-07-20 1980-02-15 Bernier Jacques HEATING PUMP HEATER INSTALLATION

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH131194A (en) * 1927-09-23 1929-01-31 Gabriel Zwicky Evaporator with flooding operation for small refrigeration machines.
FR711574A (en) * 1930-02-19 1931-09-12 Thomson Houston Comp Francaise Improvements to refrigeration cabinets and their evaporators
US2894731A (en) * 1955-07-18 1959-07-14 Gen Motors Corp Refrigerating apparatus
CH380176A (en) * 1959-09-29 1964-07-31 Bbc Brown Boveri & Cie Cooling device for the cargo space of motor vehicles
DE1551994A1 (en) * 1967-09-20 1970-03-19 Peter Rabien Heat pump for heating and hot water preparation
FR2431664A1 (en) * 1978-07-20 1980-02-15 Bernier Jacques HEATING PUMP HEATER INSTALLATION

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538510A1 (en) * 1982-12-28 1984-06-29 Persohn Paul Method and device for integrated thermodynamic heating with a small pressure difference
FR2549585A1 (en) * 1983-07-21 1985-01-25 Axergie Sa Evaporator for an installation with a closed thermodynamic loop for the flow of a working fluid, and installation incorporating this evaporator
FR2566107A1 (en) * 1984-06-15 1985-12-20 Rossignol Sa Panel for heat exchanger, resulting exchanger and applications, particularly for heat pumps
EP0918199A2 (en) * 1997-11-21 1999-05-26 BSH Bosch und Siemens Hausgeräte GmbH Evaporator
EP0918199A3 (en) * 1997-11-21 2000-04-05 BSH Bosch und Siemens Hausgeräte GmbH Evaporator
FR2917158A1 (en) * 2007-06-06 2008-12-12 Airpac Sarl Heat pump e.g. water/water type pump, installation for direct solar heating flooring system, has atmospheric sensors installed in barrier, where antigel liquid circulates in sensors and space arranged between channels to pass air outside
FR3085467A1 (en) * 2018-09-05 2020-03-06 Bernier Developpement HEAT PUMP WITH DOUBLE OR MULTIPLE ATMOSPHERIC SENSORS

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