06T Screw Compressor
Novation® Heat Exchangers with Micro-Channel coil Technology
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 EnviroShield protection consist in an extremely durable and ﬂexible epoxy coating uniformly applied over all coil surfaces for complete isolation from the contaminated environment.