What is meant by a double entry centrifugal compressor?

A double entry centrifugal compressor is defined by its unique design feature of having vanes on two sides of the impeller. This configuration allows air or gas to enter the impeller from both the front and rear, effectively increasing the flow capacity and efficiency of the compressor. This design ensures a more balanced flow, minimizes turbulence, and provides a more uniform pressure distribution, leading to better overall performance compared to single-entry designs.

The dual-sided vane structure is particularly advantageous in applications requiring high volume and high efficiency, as it allows for a more effective compression of the gas. This type of compressor is often utilized in industrial and aerospace applications where performance and reliability are paramount.