Main performance parameters of centrifugal compressor

Release time：2025-09-05    Click：61

　　Centrifugal compressors are widely used in air separation, petrochemical and other large industrial fields.In the process of type selection, design or optimization, it is very important to master the connotation and relationship of main performance parameters.Turbo-tech focuses on the main performance parameters of centrifugal compressor, analyzes its definition, function and selection application, and helps users achieve accurate matching and stable operation.

　　Main performance parameters of centrifugal compressor

　　一、Analysis of core performance parameters

　　1.Flow Rate

　　-Definition: The volume (e.g. m3/h) or mass (e.g. kg/s) of gas passing through the compressor in unit time, and the inlet state (temperature, pressure) shall be indicated.

　　-Significance: Flow is the core index to match the process requirements. For example, natural gas pipeline transportation requires large-flow models, while precision manufacturing may require small-flow but high-stability equipment.

　　-Influencing factors: impeller diameter, rotating speed, pressure difference between inlet and outlet, etc., and margin should be reserved in combination with process fluctuation range in type selection.

　　2.Compression Ratio

　　-Definition: the ratio of outlet pressure to inlet pressure (ε = pOutlet/pInlet).

　　Meaning: Compression ratio determines energy consumption and temperature rise. High compression ratio requires multi-stage compression to avoid efficiency decline or mechanical risk caused by single-stage compression.

　　-Selection Note: Avoid excessively high single-stage compression ratio, and realize high-efficiency compression through multi-stage series connection.

　　3.Rotational Speed

　　-Definition: The number of revolutions per minute (r/min) of the impeller affects the kinetic energy and pressure generation of gas.

　　4.ShaftPower

　　-Definition: Mechanical power required to drive compressor, including gas compression work and internal losses (such as friction and leakage).

　　5.Efficiency

　　-Classification: including adiabatic efficiency (energy utilization rate in actual compression process) and polytropic efficiency (comprehensive temperature rise and pressure change).

　　6.SurgeMargin

　　-Definition: The safety margin of the compressor away from the surge condition, which is usually expressed as a function of the ratio of flow to pressure.

　　二、Main performance parameters of Turbo-tech centrifugal compressor

　　Turbo-tech Ti series centrifugal compressor：

　　Flow range：1200~24000Nm3/h；

　　pressure range：0.06~1.6MPa（G）；

　　Compression medium: air, nitrogen, etc.

　　Turbo-tech Mn(H) series centrifugal compressor：

　　Flow range：1200~600000Nm3/h；

　　pressure range：0.12~16.0MPa（G）；

　　Compression medium: air, nitrogen, etc.

　　Turbo-tech Ra series centrifugal compressor：

　　Flow range：1200~600000Nm3/h；

　　pressure range：0.25~40.0MPa（G）；

　　Compression medium: various process gases;

　　To sum up, the main performance parameters of centrifugal compressor are introduced here for you. The main performance parameters of centrifugal compressor are not only a collection of technical indicators, but also a bridge connecting process requirements and equipment efficiency. Through accurate selection, dynamic optimization and intelligent management, users can reduce energy consumption and cost while ensuring stable operation.