Does a centrifugal air compressor save energy or a screw air compressor saves energy?
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Experts would like to ask whether a centrifugal air compressor saves energy or a screw air compressor saves energy.
According to relevant information: The efficiency of centrifugal air compressors is lower than that of screw air compressors. Due to the fast gas flow rate and large energy loss of centrifugal air compressors, the working efficiency of currently produced centrifugal air compressors is generally only 60%; while the working efficiency of screw air compressors can reach 70% to 80%. In terms of energy saving alone, using screw air compressors is more effective than using centrifugal air compressors.
Regarding the topic I saw in the group, the opinions of the experts are the same as yours. I would like to add that without talking about flow and pressure, it is just a rogue. For large flow and high pressure, centrifugal type is more energy-saving.
The main reason is that the screw compressor does not have such a large flow rate. Even with the equipment, the cost is high
That makes sense, different magnitudes
I have seen this information several times. I personally feel that it is an older statement. The centrifugal air compressor mentioned in it should refer to a single-shaft multi-stage centrifugal compressor. Because there is internal leakage between each stage, the efficiency is not high. The efficiency of the mainstream multi-shaft centrifugal compressors is still good. The specific power is generally 5.5-6.
Everyone has different opinions on energy consumption, but I don't think there is much difference. But the main difference between the two is not here. The main reason is that the centrifuge is more suitable for working conditions with relatively stable flow. Especially under large flow rates, it has advantages that the screw machine cannot match. It can run for a long time, has a longer life cycle, has much less full-cycle costs than the screw machine, and has better stability. ； Providing 100% oil-free air is a must for some industries. The disadvantage is that the flow adjustment range is limited and is not suitable for frequent loading and unloading conditions. So this thing is not the best, only what suits the needs
It makes sense, we need to consider it comprehensively and compare