| 摘要 |
A multi-user refrigeration plant comprises portions (2, 3, 44) assigned to serve at least two different type of users selected among first normal cooling users TN, second environmental conditioning users AC and third cooling users BT. The multi-user refrigeration plant (1) is equipped with at least a first compressors set (4) whose outlet are mutually interconnected (8), and it (1) is also equipped with at least switch means first (11) and second (12), a condenser means (5), a liquid receiver means (9), a plurality of valve means and a plurality of connecting means wherein said elements and means cooperate to compose the circuit of the plant for the in it circulating cooling fluid state change. Said first user plant portion (2) includes a first evaporator means (6), said second user plant portion (3) includes a heat exchanger (7), said third user plant portion (44) includes a evaporator means (42), this latter (42) is connected to the remaining part of the circuit by means of a second cooling stage (40). Said plant (1) comprises a balancing means (13), controlled by control means that controls also the switch means (11, 12), and it comprises a fluid flow regulation valve (35) interconnected between a bleed connector connected immediately downstream of the outlet interconnection (8) of the compressor set (4) and a mixing means (15) inlet and it comprises a controlled expanding valve (36) interposed between a receivers means (9) outlet and an additional mixing means (15) inlet having an outlet (32) connected at the compressor set (4) common suction inlet (17). |
