Airedale OptiChill FreeCool
The OptiChill FreeCool (OFC) is a large capacity, low energy R134a air-cooled screw chiller that meets diverse cooling loads with a flexible, low sound cooling solution.
Highly energy efficient, the OptiChill FreeCool offers more than 95% free-cooling over a year (cumulative hours, London, UK) and can save more than 50% of the energy consumed by a conventional chiller thus greatly reducing operational costs. For up to 30% of the year, the OptiChill FreeCool can operate purely in free-cooling mode, leading to Free-cooling EER’s* of up to 75. During any mechanical cooling, excellent part load efficiencies ensure an ESEER (European Seasonal Energy Efficiency Ratio) of up to 3.44.
Main features:
- ETL listed: Energy Technology List (all OPC models)
- 52 models (OPC) and over 200 models (OFC)
- Quiet and Extra Quiet ranges
- Dual independent refrigeration circuits for resilience
- Up to 95% free-cooling with OFC
- 12.5°C increase in operational evaporating temperature range allowing supply water temperatures to be increased, thus raising the free cooling threshold and giving enhanced compressor efficiency and reduced power input (OFC)
- Intelligent head pressure control, optimises performance (OFC only)
- Latest fan technology reduces sound and power input
- 8 stages of cooling for more precise capacity match
- Large surface area condensing coils
- High efficiency shell and tube evaporator
- Large surface area condensing coils
- High efficiency shell and tube evaporator
Main benefits:
- Free-cooling virtually all year round
- Interactive head pressure setpoint management to achieve optimum EER
- Efficient shell and tube evaporator with freeze protection offers high evaporating temperatures
- Large surface area condenser coil with enhanced tube and fin for improved heat exchange and low noise
- Two sizes of free-cooling coil (2 and 3 rows) for increased annual efficiencies
- Electronic expansion valves increase ESEER by 30%
- Automatic rescheduling of chilled water
- Economisers, each with dedicated EEV, to enhance compressor performance at full and part load operation
