Answer: It is undeniable that a single large air compressor is much more energy efficient than multiple small air compressors. This is a common feature of any type of air compressor. Therefore, the principle of selecting an air compressor based on energy efficiency is to choose a large one rather than a small one. However, judging from various aspects, the selection of a large air compressor is also subject to the following factors:
(1) The limitation of the power system. The first thing to consider is the application voltage. It is necessary to consider whether the large air compressor has sufficient impact resistance on the power grid when starting.
(2) When the amount of compressed air changes due to seasons, time differences or other factors exceeds a certain range (depending on the model), or the actual air volume used is likely to be far lower than the estimated value before purchasing the air compressor, a single air compressor will inevitably discharge or unload, resulting in energy waste. Multiple air compressors have greater flexibility to accommodate changes in usage.
(3) Abnormal machine tripping or necessary machine shutdown is a potential pressure for production suspension. In order to reduce the risk of production suspension, it is necessary to consider setting up a backup machine. The backup rate of a single machine can be as high as 50%.
