| 摘要 |
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%. |
| 主权项 |
1. Installation for refrigerating and maintaining at temperature an insulated enclosure, comprising:
a refrigeration unit having a compressor driven by a heat engine, a refrigerant circulation circuit, a pressure reducing valve, a condenser and an evaporator and, a thermochemical-type cooling system comprising a reservoir containing a liquefied gas suitable, after evaporation, for being combined with a reactive product composed of a mixture of a reactive salt and expanded natural graphite contained in a reactor, said combination being accomplished according to an exothermic thermochemical reaction, the reaction product obtained being capable of being regenerated by heating means by releasing said gas according to an inverse thermochemical reaction, said cooling system comprising an evaporator and a condenser, wherein: the evaporator of said cooling system is in thermal contact with the refrigerant circuit of the refrigeration unit upstream from the evaporator thereof, the reactor of the cooling system is in thermal contact with heating means utilizing calorific energy dissipated by the heat engine during its operation, the apparent density of the graphite used is between 100 and 120 kg/m3, the proportion by mass of the salt in the reactive product is between 50% and 75%. |
