| 摘要 |
PURPOSE:To effect energy saving operation by a method wherein the most efficient compressor is operated preferentially in the parallel operation of a plurality of different type and different capacity compressors. CONSTITUTION:The reciprocating compressors 1, 2 and the screw type compressors 3, 4 are connected to respective air tanks 5, 6, 7, 8 while air is supplied to the load of pneumatic equipments through a collecting pipe 9. In the parallel operation of the compressors in such constitution, the capacities of the compressors are regulated from the reciprocating compressors 1, 2 among the air compressors preferentially, in which required shaft power upon unleading are smaller. Accordingly, when the unloading is effected from the reciprocating type compressors 1, 2 in case the load is reduced from the full load operation of the compressors, it becomes the energy saving operation compared with the case in which the capacity regulating is effected from the compressors such as the screw type compressors 3, 4 whose required shaft power upon unleading is larger than the reciprocating type compressor. |
