Abstract:
Refrigerated chamber having a wall (11), through at least part of which gas can flow and which has a predefined thickness (s) and an inner side (13) and an outer side (12) between which a plurality of ducts (9) extend, wherein the ducts (9) have a significantly greater length (L) than the thickness (s) of the wall (11) and they connect the interior (14) of the refrigerated chamber to their surroundings. The ratio of the length (L) of the ducts (9) to the thickness (s) of the wall (11) is at least 10, and the ducts preferably have the length of the greater length of the wall. The ducts (9) extend between the inner side (13) of the wall (11) and the outer side (12) of the wall (11) at an acute angle with respect to the inner side (13) or the outer side (12) of the wall (11). The chamber is cooled by a liquefied gas, in particular nitrogen, which is discharged to the surroundings after vaporization through the ducts (9), especially in the ceiling subject to solar radiation.
Abstract:
A temperature-controlled vehicle includes a driving portion including an engine powering the vehicle for movement. The temperature-controlled vehicle further includes a cargo portion including a load space, a heat exchanger in communication with the load space, a cryogen refrigeration circuit in communication with the heat exchanger, a fossil fuel heater selectively providing heat to the load space, a control system interactively coupled with the cryogen refrigeration circuit and the fossil fuel heater to control the temperature within the load space, and an electrical power supply disposed on the cargo portion and coupled to the fossil fuel heater and the control system to selectively provide electrical power thereto.
Abstract:
A temperature-controlled vehicle includes a driving portion including an engine powering the vehicle for movement. The temperature-controlled vehicle further includes a cargo portion including a load space, a heat exchanger in communication with the load space, a cryogen refrigeration circuit in communication with the heat exchanger, a fossil fuel heater selectively providing heat to the load space, a control system interactively coupled with the cryogen refrigeration circuit and the fossil fuel heater to control the temperature within the load space, and an electrical power supply disposed on the cargo portion and coupled to the fossil fuel heater and the control system to selectively provide electrical power thereto.
Abstract:
' Système pour l'exploitation et la gestion d'un parc de contenants autonomes réfrigérés pour le transport de denrées périssables, comprenant: - Des contenants munis d'un Tag passif comportant une information d'identification, ainsi que d'un Tag actif comprenant une sonde de température, un enregistreur relié à ladite sonde et apte à enregistrer les valeurs de température mesurées; - Un pistolet ou moyen d'injection d'un fluide frigorifique dans le contenant, moyen qui est muni d'un dispositif apte à lire le Tag passif du contenant, afin de prendre connaissance du numéro d'identification du Tag passif ; - Une unité d'acquisition et de traitement de données, apte aux opérations suivantes : - recevoir dudit dispositif ladite information d'identification, et relier ce numéro d'identification de Tag passif avec le numéro du Tag actif se trouvant dans le contenant ,- - calculer, en fonction de données liées au parcours logistique du contenant et de données physiques du fluide, une quantité de gaz liquéfié à injecter dans le contenant; - ordonner audit pistolet ou moyen d'injection les caractéristiques de l'injection de gaz liquéfié à injecter dans le contenant.
Abstract:
A system for cooling superconducting equipment (9) which employs vaporizing liquid hydrogen in an open loop which cools superconducting equipment or cools helium recirculating in a closed loop which cools the superconducting equipment, wherein no refrigerator is employed and wherein the resulting gaseous hydrogen may be further used for cooling, fuel and/or combustion.
Abstract:
An apparatus for freezing a biological sample having a frame, an enclosure adapted to conduct a cryogenic fluid therethrough, and a block in the enclosure such that the block is cooled to a temperature capable of freezing the sample. A force generating device is mounted on the frame generally above the enclosure. A sample holder is removably attached to the force generating device having a cavity at its free end for receiving a sample to be frozen. The force generating device, sample holder, and block are constructed to compress the sample between the block and the sample holder such that the holder penetrates the surface of the block and effectively seals the sample during compression.
Abstract:
A closure for a cooling container opening having a predefined opening diameter, particularly a cryotank (1). According to the invention, a closable extraction opening (9) for introducing items that are to be cooled into the cooling container (1) and/or for extracting cooled items from the cooling container (1) is arranged inside the closure. The diameter of the extraction opening (9) is smaller than the diameter of the cooling container opening.
Abstract:
A process for producing slush nitrogen, comprising charging a low-temperature container with liquid nitrogen and arranging an ejector capable of drawing out liquid nitrogen by suction by spewing a refrigerant liquid or gas, such as low-temperature helium gas or liquid helium of pressure higher than in the space within the container, into the container so that the liquid nitrogen drawn out by suction by the refrigerant and spewed together with the refrigerant is refrigerated by the refrigerant, becomes particulate solid nitrogen and falls, while discharging the gas lying in the space within the container outside the container so as to constantly maintain the space at atmospheric pressure or higher. Further, there is provided a method of refrigerating a superconductive object including a substance exhibiting a superconductive state at temperatures close to the temperature of liquid nitrogen or close to the temperature at which the liquid nitrogen and the solid nitrogen coexist, characterized in that the object is immersed in slush nitrogen held in an adiabatic container so as to effect contact of the object with slush nitrogen and refrigeration thereof.
Abstract:
A method for cooling a fluid in the liquid state, possibly also containing solid elements, comprises feeding said fluid into a containing member (4) for said fluid and also feeding into said member a cooling fluid in the liquid state, such as a liquefied gas; said fluids are brought into direct contact within said containing member so that by absorbing heat, the cooling fluid passes into the gaseous state and cools the fluid to be cooled, these fluids then being extracted directly from said member by separate conduits. The plant for implementing said method is also claimed.