Abstract:
The present invention relates to a self-contained trolley for temperature conditioning and distribution of meal trays (13) comprising two compartments separated by an insulating wall (11), namely a compartment for heating, called the hot compartment, and a compartment for chilling, called the cold compartment, receiving at least one stack of meal trays arranged so that one part of each meal tray (13) is located in the hot compartment and the other part thereof is located in the cold compartment, wherein the heating of the hot compartment and the chilling of the cold compartment are simultaneously obtained by means of a thermochemical system. This trolley is characterised in that said reactor (15) and the evaporator of the thermochemical system are respectively and exclusively arranged in the hot compartment and in the cold compartment and in that the reactive material used in the thermochemical system consists of a compacted mixture of manganese chloride and expanded natural graphite (ENG), and the gas consists of ammonia. (FIG. 3)
Abstract:
A system and a thermochemical method for the production of cold, that uses a reactive device having a reactor or a chamber for storing a reactive product that can absorb a gas. The reactive product and the gas are such that, when they are exposed to one another, they undergo a reaction resulting in absorption of the gas by the reactive product and, conversely, they undergo a reaction involving the desorption of the gas absorbed by the reactive product as a result of heat applied to the reactive product when it absorbed the gas. The system has two substantially identical reactive devices wherein when the reactor of one reactive device is operating in the absorption cycle, the reactor of the other is operating in the desorption cycle. The system has a mechanism for determining the progress rate of the thermochemical reaction.
Abstract:
The present invention relates to a self-contained trolley for temperature conditioning and distribution of meal trays (13) comprising two compartments separated by an insulating wall (11), namely a compartment for heating, called the hot compartment, and a compartment for chilling, called the cold compartment, receiving at least one stack of meal trays arranged so that one part of each meal tray (13) is located in the hot compartment and the other part thereof is located in the cold compartment, wherein the heating of the hot compartment and the chilling of the cold compartment are simultaneously obtained by means of a thermochemical system. This trolley is characterized in that said reactor (15) and the evaporator of the thermochemical system are respectively and exclusively arranged in the hot compartment and in the cold compartment and in that the reactive material used in the thermochemical system consists of a compacted mixture of manganese chloride and expanded natural graphite (ENG), and the gas consists of ammonia.
Abstract:
The present invention relates to a refrigeration facility and a method for maintaining the temperature of an isothermal enclosure (3) including: a refrigerating unit (5) comprising a compressor (7) driven by a heat engine (8) and an evaporator (13); and a 23 thermochemical cooling system (15) including a vessel (23) containing a liquefied gas capable, after evaporation, of combining with a reactive product, consisting of a mixture of a reactive salt and natural expanded graphite, contained in a reactor (17), the reaction product obtained being capable of being regenerated by a heating means, said cooling system including an evaporator (25) and a condenser (21). The facility is characterised in that: the evaporator (25) of said cooling system is in thermal contact with the refrigerant circuit of the refrigerating unit (5) upstream from the evaporator (13) thereof; the reactor of the cooling system is in thermal contact with a heating means using the heat energy dissipated by the heat engine during the operation thereof; the natural expanded graphite used has an apparent density of 100 to 120 kg/m3; and the weight percentage of the salt in the reactive product is of 50% to 75%.
Abstract:
A method for changing a temperature of the interior volume of a thermally insulated space to a preset temperature and maintaining it at the preset temperature using two thermochemical systems which can be connected to an external energy source. The reactor of one of the systems is heated until fully regenerated, while the other system keeps the temperature at the preset temperature; when the reactor is fully regenerated, the system comprising the regenerated reactor is used to maintain the preset temperature and the reactor of the other system is heated to regenerate it as long as it is connected to the external energy source.
Abstract:
The present invention relates to an enclosure which is refrigerated and kept at a predetermined set temperature (Te), containing the evaporator (7) of a refrigerating unit (5). Said enclosure is characterised in that: same comprises a thermochemical system (9) the circuit of which is separate from that of the refrigerating unit and which includes a reactor (1) containing a reactive product capable of absorbing a gas, a condenser and an evaporator arranged in said enclosure (3), the reactive product and the gas being such as to be the subject, when placed in the presence of one another, of a reaction which has the effect of the gas being absorbed by the reactive product and, conversely, to be the subject of a desorption reaction of the gas absorbed by the reactive product when heat is applied thereto once the gas has been absorbed, the thermochemical system having two operating phases, namely a cold-production phase and a regeneration phase, said system comprising measurement (14) and control (19) means which only enable the thermochemical system (9) to enter the regeneration phase if the temperature of the condenser (17) thereof is below a predetermined threshold temperature (Ts).
Abstract:
The present invention relates to a refrigeration facility and a method for maintaining the temperature of an isothermal enclosure (3) including: a refrigerating unit (5) comprising a compressor (7) driven by a heat engine (8) and an evaporator (13); and a thermochemical cooling system (15) including a vessel (23) containing a liquefied gas capable, after evaporation, of combining with a reactive product, consisting of a mixture of a reactive salt and natural expanded graphite, contained in a reactor (17), the reaction product obtained being capable of being regenerated by a heating means, said cooling system including an evaporator (25) and a condenser (21). The facility is characterized in that: the evaporator (25) of said cooling system is in thermal contact with the refrigerant circuit of the refrigerating unit (5) upstream from the evaporator (13) thereof; the reactor of the cooling system is in thermal contact with a heating means using the heat energy dissipated by the heat engine during the operation thereof; the natural expanded graphite used has an apparent density of 100 to 120 kg/m3; and the weight percentage of the salt in the reactive product is of 50% to 75%.
Abstract:
The present invention relates to an enclosure which is refrigerated and kept at a predetermined set temperature (Te), containing the evaporator (7) of a refrigerating unit (5). Said enclosure is characterised in that: same comprises a thermochemical system (9) the circuit of which is separate from that of the refrigerating unit and which includes a reactor (1) containing a reactive product capable of absorbing a gas, a condenser and an evaporator arranged in said enclosure (3), the reactive product and the gas being such as to be the subject, when placed in the presence of one another, of a reaction which has the effect of the gas being absorbed by the reactive product and, conversely, to be the subject of a desorption reaction of the gas absorbed by the reactive product when heat is applied thereto once the gas has been absorbed, the thermochemical system having two operating phases, namely a cold-production phase and a regeneration phase, said system comprising measurement (14) and control (19) means which only enable the thermochemical system (9) to enter the regeneration phase if the temperature of the condenser (17) thereof is below a predetermined threshold temperature (Ts).
Abstract:
A system and a thermochemical method for the production of cold, that uses a reactive device having a reactor or a chamber for storing a reactive product that can absorb a gas. The reactive product and the gas are such that, when they are exposed to one another, they undergo a reaction resulting in absorption of the gas by the reactive product and, conversely, they undergo a reaction involving the desorption of the gas absorbed by the reactive product as a result of heat applied to the reactive product when it absorbed the gas. The system has two substantially identical reactive devices wherein when the reactor of one reactive device is operating in the absorption cycle, the reactor of the other is operating in the desorption cycle. The system has a mechanism for determining the progress rate of the thermochemical reaction.