Compressor With 3 output stages.
The capacity output of the booster compressor is automatically adjusted in 3 stages (50%, 75%, 100%) whilst the volumetric ratio is fixed.
Compressor With fixed Vi.
The output of the compressor with fixed Vi is automatically adjusted between 10 and 100% whilst the volumetric ratio is fixed.
Compressor With 3 Vi stages.
The capacity output of the 3-stage compressor is automatically adjusted between 25% and 100%. The volumetric ratio can also be adjusted in 3 stages (2.2 – 3.5 – 5.0), i.e. the compressor will select one of the 3 possible volumetric ratios, a ratio which best matches the pressure ratio of the cooling system. The computer will constantly calculate this and thereby adjust the compressor so that an optimized ratio is maintained. Compressor With variable Vi The capacity output of the compressor with variable Vi is adjusted from 10% to 100%. In addition there is a well-designed regulating system for adjusting the volumetric ratio (Vi) in the range 2.5 – 5.0.
This means that the compressor will at all times adjust itself to the correct Vi ratio for the system pressure ratio. Since the compressor Vi ratio is variable, this means that unnecessary power consumption due to under compression or over compression is avoided.
By means of this control the optimum efficiency can be maintained over a large pressure range, even when the pressure ratios deviate from the normal operating conditions.
Standard programmes are currently available for compressors from:
We have a great experience in adapting the program to customers’ requirements to cater for demands for many types of compressors.
As examples can be mentioned types with frequency converter on the main motor and units driven from diesel motors.