Float Suction/Discharge Pressure
Supermarket Refrigeration Systems
Typically 40% of store power consumed by refrigeration plant.
Significant savings can be achieved without detrimental effect to the product.
Reducing power consumption at the case/coldroom provides secondary savings from reduced refrigeration load.
Initiatives outlined are currently being undertaken in UK Supermarkets.
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Display Case Power Reduction
- Trim heater modulation
- LED Lighting
- Night Blinds
- Night set-points
- EC Fan Motors
- Weir plates to M/Deck cases
- Set-point verification/defrost schedules
- Switch off Drinks cases
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Central Refrigeration Plant
–Optimised compressor control (VSD + Digital Scroll)
–VSD or EC Fan motors to condensers
–Floating suction pressure
–Floating Discharge Pressure
–Pack e-check
- Optimise set-points
- Pump test compressors
- Pressure drops
- Condenser inspection
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Why Float Suction/Discharge Pressure?
- Compressor Power is proportional to pressure ratio (Discharge/Suction Press)
- Float Discharge on basis of Ambient temp
- Float Suction temp on basis of case temperature
- Elevate suction/reduce discharge pressures & save money!
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Typical Suction Pressure Control
System Design Equals Suction Set Point Regardless Of Load Required
Floating Suction Set Point
Floating Suction Pressure On and Off
Energy Saving Products