ZO Scroll Compressors

Series of scroll compressors optimized for CO₂

For low temperature subcritical applications, such as in cascade and booster systems

Description:

Emerson has developed a series of scroll compressors optimized for CO2 low temperature subcritical applications, such as in cascade and booster systems.

Basic specifications:

6 fixed capacity models: ZO21, ZO34, ZO45, ZO58, ZO88, ZO104
2 Digital models: ZOD34, ZOD104
Design type: hermetic
Nominal horsepower: 1.5 – 6.0 hp
Displacement: 2.6 – 11.7 m³/h
Cooling capacity: 4.8 to 22.1 kW
Net Weight: 22 – 41 kg

Reference conditions: Evaporating -35°C, Condensing -5°C,Suction superheat 10 K, Subcooling 0 K

Advantages:

particularly designed to exploit the characteristics of CO₂ refrigeration systems
high efficiency
high reliability and liquid handling
30-60% reduced weight and higher compactness compared with reciprocating piston compressors of similar capacity
easier transport and maintenance and more compact compressor packs
extended operating envelope to further boost overall system efficiency, for example when lifting the setpoint of the medium temperature side during low load night operation
dedicated polyol ester oil (POE)
higher bearing durability and lubrication to all critical parts at any time during run-time and system start-up