The new CSH series is based on the proven design elements of the innovative BITZER compact screws, which are recognized as a benchmark around the world. They were developed with respect to universal application in air cooled liquid chillers and heat pumps. Besides their known attributes, the compressors are distinguished by further improvements to energy efficiency under full- and part-load conditions. Additionally, the application limits were greatly expanded both in terms of low saturation discharge temperatures and high pressure ratios (heat pumps) – without compromising operating reliability.

Technical Features

Adjustment of the internal volume ratio (under full- and part-load) based on the extended range of applications

Reduction of internal flow losses

Optimisation of the oil management system

Additional cooling for extreme operating conditions through developed direct liquid injection or external oil cooling with actively controlled oil circulation level

Compact

Shortest installed length in its output class
Shut-off valves and connections within the compressor contour

Flexible

Dual capacity control: switch between 4-stage and seamless capacity control – with no compressor adaptation work

Suction and pressure connectors can be rotated in 90° increments

High efficiency profile outstandingly efficient thanks to

Advanced geometry
High rigidity
Patented production process for maximum precision
High peripheral speed

Double-walled, pressure-compensated rotor housing

Highly stable, resulting in no housing expansion even under high pressure
Additional muffling