There is no simple answer to this constantly recurring question. Both technologies are viable alternatives for use in almost all installations, and both types are normally capable of doing the job. Our sole aim is to make sure you get the best out of your particular set-up, and the best profit margins from your operations. And to do that we can supply state-of-the-art compressors of both types, covering the full scope of normal capacities. Variable-speed drive - only using what’s needed The vast majority of SABROE compressor models (both reciprocating and screw types) are available with variable-speed drive (VSD) to provide stepless control of your compressor capacity. This helps you achieve maximum cooling effect using the minimum of energy, as well as keeping operating costs to the absolute minimum. The combination of a frequency converter, a VSD motor and the Unisab III integrated systems controller makes it possible to run the drive motor at speeds that match the load at any given time. This enables you to reduce energy costs by as much as 30% compared with traditional fixed-speed compressors. Screw or reciprocating compressor? The criteria you have to balance normally include: Required capacity Operating conditions Available space Part-load requirements Temperature levels Energy consumption Choice of refrigerant Environmental concerns Maintenance issues Peak vs average ratio.

Screw or reciprocating compressor? · converter, a VSD motor and the Unisab III integrated systems controller makes it possible to run the drive motor at speeds that match the load

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Page 1: Screw or reciprocating compressor? · converter, a VSD motor and the Unisab III integrated systems controller makes it possible to run the drive motor at speeds that match the load

There is no simple answer to this constantly recurring question.Both technologies are viable alternatives for use in almost all installations, and both types are normally capable of doing the job.

Our sole aim is to make sure you get the best out of your particular set-up, and the best profit margins from your operations.

And to do that we can supply state-of-the-art compressors of both types, covering the full scope of normal capacities.

Variable-speed drive - only using what’s neededThe vast majority of SABROE compressor models (both reciprocating and screw types) are available with variable-speed drive (VSD) to provide stepless control of your compressor capacity.

This helps you achieve maximum cooling effect using the minimum of energy, as well as keeping operating costs to the absolute minimum. The combination of a frequency converter, a VSD motor and the Unisab III integrated systems controller makes it possible to run the drive motor at speeds that match the load at any given time.

This enables you to reduce energy costs by as much as 30% compared with traditional fixed-speed compressors.

Screw or reciprocating compressor?

The criteria you have to balance normally include:

Required capacity Operating conditions Available space Part-load requirements Temperature levels

Energy consumption Choice of refrigerant Environmental concerns Maintenance issues Peak vs average ratio.

Page 2: Screw or reciprocating compressor? · converter, a VSD motor and the Unisab III integrated systems controller makes it possible to run the drive motor at speeds that match the load

Johnson Controls Denmark ApS . Sabroe FactoryChristian X’s Vej 201 . 8270 Højbjerg . Denmark

Phone +45 87 36 70 00 . Fax +45 87 36 70 05www.sabroe.com

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SABROE compressor programmeSc

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10 50 100 500 1000 5000 10000

CMO 24CMO 34CMO 26CMO 36CMO 28CMO 38SMC 104SSMC 104LSMC 104ESMC 106SSMC 106LSMC 106ESMC 108SSMC 108LSMC 108ESMC 112SSMC 112LSMC 112ESMC 116SSMC 116LSMC 116ETCMO 28TCMO 38TSMC 108STSMC 108LTSMC 108ETSMC 116STSMC 116LTSMC 116EHPO 24HPO 26HPO 28HPX 704HPX 706HPX 708HPC 104SHPC 106SHPC 108SSAB 157HRSAB 120SSAB 120MSAB 120LSAB 120ESAB 151SSAB 151M

SAB 151LSABflex 159F

SAB 193SSAB 151ESAB 193LSAB 233SSAB 233LSAB 233ESAB 283SSAB 283LSAB 283ESAB 355SSAB 283XSAB 355LSAB 355ESAB 355X

Swept volume m3/h (Reciprocating compressors at 50 Hz. Screw compressors at 60 Hz)