HG24 CO2 T + DCR22 CO2

In line with the motto "Focus on the future: natural refrigerants", BOCK is expanding its portfolio of transcritical CO2 compressors with two new products

2 novelties for BOCK transcritical CO2 compressors

With immediate effect BOCK extends its transcritical compressor portfolio for the refrigerant R744 (CO2) by a new series with LSPM motor technology (Line Start Permanent Magnet). 

Also available immediately is the BOCK flexxCO2NTROL technology: a new, efficient compressor capacity regulator that allows the capacity of transcritical BOCK CO2 compressors to be adjusted almost stepless to the current capacity requirements of the system. Both for the transcritical BOCK CO2 compressor series and for the new series with LSPM motors. 

New BOCK series: transcritical CO2 compressors with LSPM motors

The LSPM compressors for use in refrigeration and heat pump systems combine the strengths of robust squirrel-cage asynchronous motors and those of synchronously running permanent magnet motors.

After asynchronous starting, the motor synchronizes to the operating frequency and then runs in synchronous mode without slippage. This simultaneous motor running achieves a higher refrigerant mass flow with an optimized speed and thus more cooling or heating capacity. Since there are no power losses in the rotor, the motor and overall compressor efficiency is increased - by an average of about 6 percent compared to a standard asynchronous motor. 

BOCK offers the new transcritical product range with LSPM motors in three compressor sizes with a total of 16 displacement stages from 4.8 to 39.5 m³/h (50 Hz/1,500 rpm).

More information can be found in our brochure and in the BOCK compressor selection program VAP.

Advantages and benefits at a glance

  • Combined advantages of robust asynchronous motors and low-loss synchronous motors
  • Optimized motor and overall efficiency by 6 % on average
  • No rotor and induction/excitation losses
  • More cooling/heating capacity due to optimized synchronous motor speed
  • Flexible operation: directly from mains or via frequency inverter
  • Lower operating costs of the compressor
  • Can be combined with compressors with asynchronous motors on single rack system
  • Compliance of important energy and environmental protection requirements

BOCK flexxCO2NTROL: New capacity regulator technology for BOCK CO2 compressors

With the digital capacity regulator DCR22 CO2 the capacity of transcritical BOCK CO2 compressors can be adjusted almost stepless to the current capacity requirement of the system.

Depending on the operating conditions, the regulation covers an extraordinary range between 100 percent and 25 percent capacity. This ensures great economic and technical advantages, especially in application areas with strongly fluctuating power requirements, such as in many industrial process or supermarket applications.

With the digital capacity regulator DCR22 CO2 the first product solution from the system family BOCK flexxCO2NTROL will be available from 09. June 2022. 

More information can be found in our brochure and in the BOCK compressor selection program VAP.

Advantages and benefits at a glance

  • Almost stepless capacity regulation of transcritical BOCK CO2 compressors.
  • Great capacity range between 100% and 25% 
  • Higher average evaporating temperature
  • Minimized compressor start stops: minimized risk of wear, longer motor life time
  • Use of existing system controllers possible: Integration into existing system control system (if the digital capacity regulation is available for reciprocating compressors)
  • Increased system efficiency, reduced investment and operating costs
  • Universally applicable: for digital and conventional capacity control
  • Attractive alternative to frequency inverters
BOCK CO2 compressors with LSPM motors

BOCK CO2 compressors with LSPM motors

BOCK-CO2-flexxCO2NTROL

BOCK flexxCO2NTROL - digital capacity regulator for CO2 compressors

Bock capacity regulator DCR22 CO2 regulated condition

Bock capacity regulator DCR22 CO2 regulated condition

Bock capacity regulator DCR22 CO2 unregulated condition

Bock capacity regulator DCR22 CO2 unregulated condition

You can find all information in our brochures

BOCK flexxCO2NTROL - new capacity regualtor technology for CO2 compressors

Product brochure

PDF  |  2.94 MiB

BOCK transcritical CO2 compressors with LSPM motors

Product brochure

PDF  |  3.61 MiB