FR3058206B1 - CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER - Google Patents
CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER Download PDFInfo
- Publication number
- FR3058206B1 FR3058206B1 FR1660572A FR1660572A FR3058206B1 FR 3058206 B1 FR3058206 B1 FR 3058206B1 FR 1660572 A FR1660572 A FR 1660572A FR 1660572 A FR1660572 A FR 1660572A FR 3058206 B1 FR3058206 B1 FR 3058206B1
- Authority
- FR
- France
- Prior art keywords
- face
- air
- exchanger
- space
- dry ice
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title 1
- 229910052799 carbon Inorganic materials 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000008030 elimination Effects 0.000 claims abstract 2
- 238000003379 elimination reaction Methods 0.000 claims abstract 2
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 description 12
- 239000010902 straw Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009736 wetting Methods 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
- F25D3/125—Movable containers
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/065—Removing frost by mechanical means
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/04—Controlling heat transfer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Un échangeur thermique (1) apte à réaliser un échange entre de l'air et de la neige carbonique, qui comporte une plaque de contact, apte, au niveau d'une de ses faces, à être mise en contact avec l'air d'un espace à refroidir, ladite face étant munie le cas échéant d'ailettes (2) placées perpendiculairement à la face considérée, se caractérisant en ce qu'il est muni d'un système de volet (3), déplaçable par rapport à la surface de ladite face, pour permettre d'occulter tout ou partie de la surface de ladite face et ainsi limiter en proportion le transfert de froid de la plaque audit espace, et en ce que le système de volet est muni ou solidaire d'un racloir (4) permettant l'élimination, et le cas échéant également la collecte (5), du givre en formation sur ladite face.A heat exchanger (1) adapted to perform an exchange between air and dry ice, which comprises a contact plate, adapted, at one of its faces, to be brought into contact with the air a space to be cooled, said face being provided if necessary with fins (2) placed perpendicular to the face in question, characterized in that it is provided with a flap system (3), movable relative to the surface of said face, to allow to obscure all or part of the surface of said face and thus limit in proportion the cold transfer of the plate to said space, and in that the shutter system is provided or secured with a scraper (4) allowing the elimination, and where appropriate also the collection (5), frost formation on said face.
Description
La présente invention concerne le domaine des échangeurs air /neige carbonique, et plus particulièrement une méthode de régulation de la puissance frigorifique d’un tel échangeur.The present invention relates to the field of air / dry ice exchangers, and more particularly to a method for regulating the cooling capacity of such an exchanger.
On trouve de tels échangeurs notamment dans le domaine du transport et de la distribution de produits thermosensibles, tels les produits pharmaceutiques et les denrées alimentaires. Dans ce domaine, le froid nécessaire au maintien de la température des produits est fourni principalement par deux technologies différentes - les groupes frigorifiques à compression mécanique de vapeur fonctionnant en boucle fermée ; - les groupes cryogéniques fonctionnant en boucle ouverte et mettant en œuvre une injection directe ou indirecte de fluides cryogéniques et en particulier d’azote liquide.Such exchangers are found especially in the field of transport and distribution of thermosensitive products, such as pharmaceuticals and foodstuffs. In this field, the cold required to maintain the temperature of the products is provided mainly by two different technologies - the mechanical vapor compression refrigeration units operating in a closed loop; - Cryogenic groups operating in open loop and implementing a direct or indirect injection of cryogenic fluids and in particular liquid nitrogen.
Et ainsi de tels échangeurs air/neige sont mis en œuvre dans les solutions cryogéniques à injection indirecte où un fluide cryogénique alimentant la caisse du camion provient traditionnellement d’un réservoir cryogénique embarqué sous le camion, et est acheminé jusqu’à un ou plusieurs échangeurs thermiques situés à l’intérieur de la ou les chambres froides du camion, échangeurs munis de moyens de circulation d’air. Ces échangeurs permettent le refroidissement, à la température désirée, de l’air interne de la chambre stockant les produits.And so such air / snow exchangers are implemented in cryogenic indirect injection solutions where a cryogenic fluid supplying the truck body is traditionally from a cryogenic tank on the truck, and is conveyed to one or more exchangers thermal located inside the cold room or rooms of the truck, exchangers provided with air circulation means. These exchangers allow the cooling, at the desired temperature, of the internal air of the chamber storing the products.
Rappelons que le contrôle de procédé typiquement mis en œuvre dans de tels camions fonctionnant en injection indirecte est le suivant : 1- lors de la mise en route du système frigorifique du camion (par exemple au démarrage d’une tournée du camion ou après un arrêt prolongé du système frigorifique pour une raison quelconque) ou encore après une ouverture de porte, on adopte un mode de « descente rapide » en température (cette industrie nomme cette phase « pull down »). 2- Une fois la température de consigne atteinte dans la chambre de stockage des produits, on adopte un mode de contrôle/régulation qui permet de maintenir la température de la chambre de stockage des produits à la valeur de la consigne (cette industrie nomme cette phase « maintien » ou « régulation »).Recall that the process control typically implemented in such trucks operating by indirect injection is as follows: 1- when the refrigeration system of the truck is started (for example at the start of a truck tour or after a stop prolonged refrigeration system for some reason) or after a door opening, we adopt a mode of "rapid descent" temperature (this industry called this phase "pull down"). 2- Once the set temperature has been reached in the product storage chamber, a control / regulation mode is adopted which makes it possible to maintain the temperature of the product storage chamber at the value of the setpoint (this industry calls this phase "Maintenance" or "regulation").
Les professionnels de ce secteur parlent également d’un fonctionnement en pleine charge (phase 1) ou à charge partielle (phase 2).Professionals in this sector also talk about full load (phase 1) or partial load (phase 2) operation.
Un exemple d’un tel échangeur air/neige carbonique est décrit dans le document FR-3 034 511, échangeur qui comporte au moins une plaque d’une mousse métallique ou d’une paille métallique, mousse ou paille se caractérisant par un taux de porosité ou de vide donné, plaque de mousse ou de paille qui est apte à stocker en son sein une quantité de CO2 liquide ou de neige carbonique, échangeur qui comporte également une plaque de contact, solidaire par une de ses deux faces de ladite plaque de mousse ou de paille, plaque de contact apte, au niveau de son autre face à être mise en contact avec l’air d’un espace à refroidir.An example of such an air / dry ice exchanger is described in document FR-3,034,511, which exchanger comprises at least one plate of a metal foam or of a metal straw, foam or straw characterized by a porosity or vacuum given, foam or straw plate which is able to store therein a quantity of liquid CO2 or dry ice, exchanger which also comprises a contact plate, secured by one of its two faces of said plate of foam or straw, suitable contact plate, at its other side to be brought into contact with the air of a space to cool.
Comme signalé ci-dessus, la présente invention s’intéresse plus particulièrement à une méthode de régulation de la diffusion de froid par un tel échangeur Air/Neige carbonique.As indicated above, the present invention is more particularly concerned with a method of regulating the diffusion of cold by such an air / carbon dioxide exchanger.
Comme on le verra plus en détail dans ce qui suit, l’invention propose d’utiliser un équipement de type « volet roulant », par exemple horizontal quand l’échangeur est positionné au plafond de la caisse interne du camion, volet permettant d’occulter tout ou partie de la surface de l’échangeur en contact avec l’air de l’espace à refroidir.As will be seen in more detail in the following, the invention proposes to use a "rolling shutter" type of equipment, for example horizontal when the exchanger is positioned on the ceiling of the truck's inner body, a shutter allowing conceal all or part of the surface of the exchanger in contact with the air of the space to be cooled.
Et selon un mode de réalisation tout particulièrement avantageux de réalisation de l’invention, le volet est muni d’un système de racloir permettant l’élimination (et le cas échéant également la collecte) du givre en formation sur ladite surface.And according to a particularly advantageous embodiment of embodiment of the invention, the shutter is provided with a scraper system for the removal (and possibly also the collection) frost formation on said surface.
La figure 1 annexée illustre un mode de réalisation de l’invention.Figure 1 attached illustrates an embodiment of the invention.
La référence 1 désigne l’échangeur dans sa globalité, la plaque de contact étant le cas échéant munie d’ailettes (2) placées perpendiculairement à la face de la plaque qui est mise en contact avec l’espace à refroidir.The reference 1 designates the exchanger in its entirety, the contact plate being optionally provided with fins (2) placed perpendicular to the face of the plate which is brought into contact with the space to be cooled.
Et la référence 3 désigne le système de volet roulant qui, on le visualise bien sur la figure, peut se déployer le long de la face en question pour en obturer tout ou partie de la surface et ainsi réguler la surface froide en contact avec l’espace à refroidir et donc la quantité de froid transmise à cet espace. L’invention est tout particulièrement utile pour le transport de produits frais (maintenus typiquement entre +2°C et +8°C) pour lesquels un excès de fourniture de froid peut poser un grave problème de gel des produits et donc d’endommagement de ces produits.And the reference 3 designates the roller shutter system which, as can be seen in the figure, can be deployed along the face in question to close all or part of the surface and thus regulate the cold surface in contact with the space to cool and therefore the amount of cold transmitted to this space. The invention is particularly useful for the transport of fresh products (typically maintained between + 2 ° C and + 8 ° C) for which an excess supply of cold can pose a serious problem of product freezing and therefore damage to the product. these products.
On adoptera alors préférentiellement un contrôle de la position du volet où : - en mode « descente rapide » ou « pull down » : le volet est totalement ouvert ; - en mode « régulation » ou « maintien » : ouverture du volet proportionnellement à la demande de froid ; - en mode « sécurité » : volet totalement fermé, par exemple en cas d’ouverture de porte. Lorsque le livreur pénètre dans la caisse, le volet doit rapidement se refermer afin de limiter le risque de brûlure par contact sur la surface d’échange de l’échangeur.We will then preferentially adopt a control of the shutter position where: - in "fast descent" or "pull down" mode: the shutter is fully open; - in "regulation" or "maintenance" mode: opening of the shutter in proportion to the cold demand; - in "safety" mode: shutter completely closed, for example in case of door opening. When the deliveryman enters the box, the shutter must quickly close to limit the risk of burn by contact on the exchange surface of the exchanger.
La figure 2 annexée illustre un exemple de logigramme de fonctionnement :The appended FIG. 2 illustrates an example of a flow diagram of operation:
Pvolet = position du volet (0% = totalement fermé; 100 % = totalement ouvert) δχ = incrément de déplacement du voletPvolet = position of the shutter (0% = totally closed, 100% = totally open) δχ = increment of movement of the shutter
PV = lecture de la température ambiante dans la caisse en °C SP = Consigne de régulation pour la température interne à la caisse (par exemple située entre 2 et 8°C)PV = reading of the ambient temperature in the box in ° C SP = Setpoint of regulation for the temperature inside the box (for example between 2 and 8 ° C)
Porte = Contact d’ouverture de porte(s) (0 = fermée(s) ; 1 = Ouverte(s))Door = Door opening contact (s) (0 = closed; 1 = Open)
Par ailleurs, il est connu que la surface d’échange en froid se couvre de « givre » par la condensation de l’air ambiant qui gèle à son contact, air ambiant qui est toujours caractérisé par un certain degré d’humidité. Cette couche de givre, peu adhérente, dégrade le coefficient d’échange du système. On rappellera ici que le givre qui se dépose dans de telles situations est un givre particulier qu’on peut qualifier de « givre cryogénique », volumineux et peu dense, sorte de neige.Moreover, it is known that the cold exchange surface is covered with "frost" by the condensation of the ambient air which freezes on contact with it, ambient air which is always characterized by a certain degree of humidity. This layer of frost, little adherent, degrades the exchange coefficient of the system. It will be recalled here that the frost that is deposited in such situations is a particular frost that can be described as "cryogenic ice", bulky and sparse, a kind of snow.
Le volet de régulation est alors avantageusement équipé d’un racloir, par exemple en son extrémité, afin d’éliminer cette couche de givre cryogénique en un certain nombre d’allers/retours (réglable). Ce givre ne doit pas tomber sur le chargement situé sous l’échangeur (mouillage des emballages). Aussi il est préférable de prévoir un élément de collecte ainsi que l’évacuation des condensais.The control flap is then advantageously equipped with a scraper, for example at its end, in order to eliminate this layer of cryogenic ice in a certain number of round trips (adjustable). This frost must not fall on the load located under the exchanger (wetting of the packaging). Also it is better to provide a collection element and the evacuation of condensates.
La figure 3 illustre un mode de réalisation d’un système de racloir conforme à l’invention, racloir que l’on peut qualifier de racloir « à bascule » : - le racloir 4 est fixé au volet par un axe/butée permettant d’être au contact de la surface d’échange dans le sens « aller » (a)) et de basculer pour ne pas « gratter » dans le sens « retour » (b)). - le givre gratté est alors récupéré par gravité dans l’élément de collecte 5.FIG. 3 illustrates an embodiment of a scraper system according to the invention, which scraper may be described as a "rocker" scraper: the scraper 4 is fixed to the shutter by an axle / abutment allowing be in contact with the exchange surface in the "go" direction (a)) and switch to avoid "scratching" in the "return" direction (b)). the scraped frost is then recovered by gravity in the collection element 5.
Selon un des modes de mise en œuvre de l’invention, l’échangeur est muni d’un ventilateur à faible consommation énergétique (typiquement quelques Watts, en tout état de cause moins de 10 W, ce qui permet de pouvoir utiliser une batterie de recharge standard, compacte et légère) muni d’un variateur de vitesse permettant de générer un débit d'air allant de 0 à plusieurs dizaines de m3/h. Le ventilateur est placé en face avant de l'échangeur, ainsi le jet d'air qu'il génère est orienté vers la plaque d'échange air/neige carbonique et il subit ainsi un minimum de pertes des charges. L’échangeur peut de plus être muni d’un déflecteur pour aider à une diffusion homogène du jet l'air sur la plaque en question.According to one of the embodiments of the invention, the exchanger is provided with a fan with low energy consumption (typically a few Watts, in any case less than 10 W, which makes it possible to use a battery of standard, compact and lightweight charging) equipped with a speed variator to generate an air flow rate from 0 to several tens of m3 / h. The fan is placed on the front face of the exchanger, and the air jet that it generates is oriented towards the exchange plate air / dry ice and thus undergoes a minimum of losses of the loads. The exchanger can also be provided with a deflector to help a homogeneous diffusion of the jet air on the plate in question.
Les tests réalisés par la Demanderesse pour caractériser la présence d’un tel ventilateur muni d’un variateur de vitesse ont démontré les points suivants: i) l'amélioration des transferts thermiques par convection forcée permettant ainsi d'avoir un temps de descente en température (« Pull-down ») et retour à la ipérature après ouverture de porte beaucoup plus rapide qu'en l'absence du itilateur ou sa mise sur "arrêt" ; ii) l'amélioration de l'homogénéité de température dans le volume refroidi.The tests carried out by the Applicant to characterize the presence of such a fan equipped with a speed variator have demonstrated the following points: i) the improvement of heat transfer by forced convection thus allowing to have a time of descent in temperature ("Pull-down") and return to the temperature after opening the door much faster than the absence of the itilator or its setting on "stop"; ii) improving the temperature homogeneity in the cooled volume.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660572A FR3058206B1 (en) | 2016-10-31 | 2016-10-31 | CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660572 | 2016-10-31 | ||
| FR1660572A FR3058206B1 (en) | 2016-10-31 | 2016-10-31 | CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3058206A1 FR3058206A1 (en) | 2018-05-04 |
| FR3058206B1 true FR3058206B1 (en) | 2019-08-09 |
Family
ID=57963293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1660572A Active FR3058206B1 (en) | 2016-10-31 | 2016-10-31 | CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3058206B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3686524A1 (en) | 2019-01-28 | 2020-07-29 | Messer Group GmbH | Cooling system for storing and cooling products during transport on a refrigerated transport vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB668458A (en) * | 1949-10-14 | 1952-03-19 | British Thomson Houston Co Ltd | Improvements in and relating to refrigerators |
| PT90228B (en) * | 1988-04-08 | 1995-05-31 | Carboxyque Francaise | ISOTHERMAL CONTAINER TO STORE A REFRIGERANT PRODUCT AND FOR THE TRANSPORTATION OF FRESH PRODUCTS |
| IT1291165B1 (en) * | 1997-03-05 | 1998-12-29 | Monetti Spa | SOLID REFRIGERANT CONTAINER FOR ISOTHERMAL CONTAINERS, PARTICULARLY FOR THE TRANSPORT OF TEMPERATURE PRODUCTS |
| US20150338150A1 (en) * | 2014-05-23 | 2015-11-26 | Cold Chain, Llc | Insulated and ventilated refrigerant bunker |
| US20160304263A1 (en) * | 2015-04-20 | 2016-10-20 | Raychelle Irby | Cooling Storage Container for Perishable Items |
-
2016
- 2016-10-31 FR FR1660572A patent/FR3058206B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3058206A1 (en) | 2018-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3777556A1 (en) | Installation for defrosting or tempering of frozen food products | |
| FR3058206B1 (en) | CARBON AIR / SNOW EXCHANGER AND METHOD OF CONTROLLING SUCH EXCHANGER | |
| CA2870533C (en) | Method for transporting heat-sensitive products in a refrigerated lorry | |
| WO2010128233A1 (en) | Refrigerated transport method and device using an indirect injection of a cryogenic liquid and controlling the frosting of the exchangers | |
| WO2016079418A1 (en) | Compact exchanger for indirect-injection cryogenic transportation | |
| EP2652419A1 (en) | Indirect-injection method for managing the supply of cryogenic liquid to a truck for transporting heat-sensitive materials | |
| WO2012080599A1 (en) | System for defrosting heat exchangers of refrigerated trucks using an indirect injection of a cryogenic liquid | |
| WO2016156708A1 (en) | Heat exchanger for the cryogenic transportation of heat-sensitive products | |
| WO2013182766A1 (en) | Method for managing the operation of refrigerated trucks using indirect injection of cryogenic liquid | |
| WO2016092177A1 (en) | Method for managing the supply of cryogenic liquid to a truck for transporting heat-sensitive products | |
| WO2016156707A1 (en) | Device for producing cold from compressed air | |
| WO2015075335A1 (en) | Cryomechanical refrigeration system using cryogen/refrigerant exchanges | |
| FR3062713A1 (en) | THERMAL FLOW SWITCH FROM A CARBON FLOW RESERVE AND IN PARTICULAR A TEMPERATURE REGULATING DEVICE FOR CARBONIC SNOW-COOLED CONTAINERS | |
| FR3075708B1 (en) | METHOD FOR MANAGING THE OPERATION OF A REFRIGERATED TRANSPORT TRUCK OF THERMOSENSITIVE PRODUCTS OF THE INDIRECT INJECTION TYPE | |
| FR3061274A1 (en) | "DEFROSTING PROCESS FOR EXCHANGER OF A CRYOGENIC COLD SYSTEM" | |
| FR2979696A1 (en) | SYSTEM FOR ENHANCING THE BALANCING OF COLD GASES IN A FREEZING TUNNEL BY IMPLEMENTING BUFFER ZONES AND OUTER BLOWING CEILINGS | |
| FR3019275A1 (en) | PREDICTIVE DEGIVING METHOD OF REFRIGERANT TRANSPORT EXCHANGERS | |
| WO2011055048A1 (en) | Method and plant for cryogenically cooling materials, coupling together the cryogenic system of a tunnel and a refrigeration system added via a condenser outside the tunnel | |
| FR3046669A1 (en) | OPTIMIZATION OF THE DEFROSTING OF A HEAT EXCHANGER OF REFRIGERATING TRUCKS | |
| EP3046788B1 (en) | Method of managing the operation of a refrigerated truck for transporting heat-sensitive products by modifying the refrigeration power | |
| FR2995392A1 (en) | Method for implementing liquid carbon dioxide as cryogenic fluid to transfer cold energy to meals in freight containers in air transport fields, involves feeding electricity to installation that is attached with heat exchanger | |
| FR3026828A1 (en) | METHOD FOR TEMPERATURING AND MAINTAINING THE INTERIOR OF A THERMALLY INSULATED ENCLOSURE WITHOUT CONTINUOUS ENERGY SUPPLY- ASSOCIATED DEVICE | |
| FR2882811A1 (en) | Perishable product e.g. food product, preserving and transporting enclosure, has leak valve, heat conducting units, air-gap device and temperature sensor to send cryogenic liquid of heat insulated cold reserve to off-set exchange surface | |
| EP2032920A2 (en) | Method for conserving food products stored in an enclosure | |
| WO2020049229A1 (en) | Apparatus allowing cryogenic deep-freezing of food products during transport |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 2 |
|
| PLSC | Publication of the preliminary search report |
Effective date: 20180504 |
|
| PLFP | Fee payment |
Year of fee payment: 3 |
|
| PLFP | Fee payment |
Year of fee payment: 4 |
|
| PLFP | Fee payment |
Year of fee payment: 5 |
|
| PLFP | Fee payment |
Year of fee payment: 6 |
|
| PLFP | Fee payment |
Year of fee payment: 7 |
|
| PLFP | Fee payment |
Year of fee payment: 8 |