06T Screw Compressor
Novation ® Heat Exchangers with Micro-Channel coil Technology
COOLING
The Carrier 06T screw compressor benefits from Carrier ’ s long experience in the development of twin-rotor screw compressors . The compressor is equipped with bearings with oversized rollers , oil pressure lubricated for reliable and durable operation , even at maximum load .
A variable control valve controlled by the oil pressure permits infinitely variable cooling capacity . This system allows optimal adjustment of the compressor cooling capacity and ensures exceptionally high stability of the chilled water leaving temperature .
Among the other advantages : if a fault occurs e . g . if the condenser is fouled or at very high outside temperature , the compressor does not switch off , but continues operation with a reduced capacity ( unloaded mode ).
The compressor is equipped with a separate oil separator that minimises the amount of oil in circulation in the refrigerant circuit and with its integrated silencer considerably reduces discharge gas pulsations for much quieter operation .
Already utilised in the automobile and aeronautical industries for many years , the MCHE micro-channel heat exchanger used in the AquaForce is entirely made of aluminium . This one-piece concept significantly increases its corrosion resistance by eliminating the galvanic currents that are created when two different metals ( copper and aluminium ) come into contact in traditional heat exchangers . Unlike traditional heat exchangers the MCHE heat exchanger can be used in moderate marine and urban environments ( Carrier recommendation ).
From an energy efficiency point-of-view the MCHE heat exchanger is approximately 10 % more efficient than a traditional coil and allows a 30 % reduction in the amount of refrigerant used in the chiller . The low thickness of the MCHE reduces air pressure losses by 50 % and makes it susceptible to very little fouling ( e . g . by sand ). Cleaning of the MCHE heat exchanger is very fast using a high-pressure washer .
To ensure constant level of performance during time and protect coils from early deterioration or , what ' s worse , refrigerant leaks , Carrier offers ( as options ) dedicated treatments for installations in corrosive environments .
The Novation ® heat exchangers with Enviro-Shield protection ( option 262 ) are recommended for installations in moderately corrosive environments . The Enviro-Shield protection utilises corrosion inhibitors which actively arrest oxidation in case of mechanical damage .
The Novation ® heat exchangers with the exclusive Super Enviro-Shield protection ( option 263 ) are recommended for installations in corrosive environments . The Super Enviro- Shield protection consist in an extremely durable and flexible epoxy coating uniformly applied over all coil surfaces for complete isolation from the contaminated environment .
186 C A R R I E R 2 0 1 6 / 2 0 1 7