Cold production system The invention relates to a cold production system (1) for at least one room with positive temperature (2) and at least one room with negative temperature (3), characterized in that it comprises: - a first thermal power station (4); - a second thermal power station (5), with CO2; - an air heat exchanger (6,); - a gas circuit (7), connecting the second thermal power station (5) to each room at negative temperature (3) in view to cool it; - a first brine circuit (8); - a second brine circuit (9), connecting the heat exchanger (6) to the first thermal power plant (4) in order to cool it. Figure for the abstract: Fig. 1
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