Selection using the Bitzer Software

The Bitzer Software can be used to design compound systems for semi-hermetic/open drive and 2-stage reciprocating compressors. The procedure is illustrated here by way of example:

General conditions for a calculation example in the Bitzer Software. Evaporators are each equipped with an internal heat exchanger.

Refrigerant

R134a

Refrigerating capacity
3 compressors

100 kW

Operating conditions

to = -10°C
tc = 45°C
toh = 20°C

Conditions in power supply

400 V / 3 / 50 Hz

Capacity control

Compressor 1 with frequency inverter and 50% power, compressors 2 and 3 each with 25%.

1. Click the button, select or enter the general conditions and then start the calculation by clicking the button.

Design of compound systems for reciprocating compressor in the Bitzer Software.

2. Showing details of the calculation

The software suggests 3 compressors that can be used to achieve the specified capacity. Upon selecting the Detail tab and clicking the icon next to the points A (operating point) and B (start point), all calculation details of the selected compressors are displayed. Further information can be displayed by clicking the Limits, Technical Data, Dimensions, Information, Documentation and Training tabs.

The Bitzer Software suggests 3 compressors that can be used to achieve the specified capacity, here using a frequency inverter on compressor 1.

The selected compressors can be changed manually in the menu on the left by clicking the arrows next to the compressor name and recalculated by clicking the button.

3. Selecting the accessories

In the upper menu bar, choose the tab "Accessories".

The accessory module will only become active after a previous calculation!

The accessory module will only become active after a previous calculation!

The Accessories window opens and suggests a Varipack frequency inverter for compressor 1 and a common receiver for all 3 compressors.