||There are many losses in piston compressor such as valve blade losses, friction losses, etc. These factors cause the speciﬁc power to be high compared to other compressor types
||There eﬃciency is much higher as there are no intermittent opening and closing of valves. Friction is negligible as the scrolls do not touch each other increasing the speciﬁc power
||There are a lot of moving parts in the piston compressor like piston, rings, crank shaG, valve blades, etc. Higher chances of mechanical failure.
||Compared to piston compressor it 70% lesser moving parts making it more reliable
||Piston compressors have a lot of hidden maintenance over it lifecycle like changing piston rings, pistons, cylinders, Valve Blades, Non Return Valve, etc.
||There is no physical contact between the scrolls therefore wear is negligible. Tip seals are also avoided in BAC Scroll compressors.
||Most Piston compressors are belt driven causing a minimum slippage loss of 5% and also frequent belt replacements.
||Direct Drive has no slippage losses
||Piston compressors usually operate at >80 dB
||Scroll compressor operates at <70dB
||Pulsating Air Delivery
||Due to piston movements the air delivery is pulsating
||Air delivery is continuous
The starting power is very high as the compressor has to overcome multiple friction losses
||The starting power is very low compared to piston compressors as there are no contact surfaces
||Overall maintenance cost is high since there is a drop in eﬃciency due to ring wear,leaking valve blades, cylinder changes, piston changes, connecting rod bearing changes, etc.
||The scroll compressor does not drop eﬃciency overtime. The maintenance required will be periodic oil and ﬁlters.
||The Ideal duty cycle of piston compressors is less that 70%. Continuous running will lead faster depletion of performance.
||Scroll compressor has forced cooling with the aluminium cooler, maintaining the temperature and making it run at >70% duty cycle