reduced energy venting system - revs

Delivering low Off-load power

With the every increasing demand for lower energy consumption, even in off-load conditions, Hydrovane introduced their Reduced Energy Venting System (REVS) as standard from April 2008 on all Vertical (ACE) 4 kW to 45 kW & New Horizontal 11 kW to 45 kW (PEAS) Models.

REVS is a pneumatic system that measures the internal pressure of the compressor and is automatically activated as soon as the compressor goes off-load. REVS uses solenoids to internally vent the compressed air down in the Air Ends RSU (Rotor, Stator Unit) to 2.0 bar (30 psi). There is an internal count down timer, dependent on model that can be adjusted: -

	60 seconds on a 8 bar compressor
	90 seconds on a 10 bar compressor

Internally venting the compressed air means the compressor is not trying to compress already compressed air that results in energy consumption reducing to as low as 20%. Air is instantly available at anytime during this venting period (instant restart at any reducing pressure).

REVS also delivers low starting current by having the intake valve closed during start sequence. As the compressor starts with no internal pressure this means reduced motor power.

REVS only takes place when the compressor runs-on in an off-load condition.

The HV55 and HV75 horizontal enclosed compressor models have an earlier version of REVS known as Auto-idle. The Auto-idle system is a hydraulic system based on oil pressure and was also incorporated within our legacy horizontal models 18 kW to 45 kW (PSAS/PUAS).

Benefits summary of REVS: -

	Energy Savings
	Fast vent down
	No run on
	Very low off-load power
	Reliability
	Softer starting (Reduced pressure)
	Versatility
	Immediate restart
	Further improves Regulated Speed (RS) models energy performance
	Like other rotary compressor technologies, Hydrovane now offers significant low off-load power cost savings.
		Solenoid Control

 

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