How does a centrifugal compressor affect energy loss?

Correlating the changes in different types of energy loss with the flow mechanisms of structure changes. Centrifugal compressors are critical components of compressed air energy storage (CAES) systems and are of great interest to understanding internal secondary flows and their resulting energy losses.

What is a centrifugal compressor in a CAES system?

As shown in the figure, the centrifugal compressors are the key front-end energy conversion component for CAES. Also, the centrifugal compressors in the CAES system have the characteristics of wide variety mass flow rate and operating points .

What is compressed air energy storage (CAES)?

Compressed air energy storage (CAES) is considered to be one of the most promising large-scale energy storage technologies, due to its advantages, such as large energy storage capacity, high system efficiency, long operating life, and small investment .

What is a centrifugal compressor?

The compressor is a high-pressure-ratio centrifugal compressor with a high rotational speed and a compact structure consisting of a half-open type impeller with a single splitter blade and a wedge diffuser. The key parameters of the compressor are listed in Table 2. As shown in Fig. 3, the impeller blade is modeled by ruled surfaces.

Does a high-loading centrifugal compressor lose energy?

This research study conducts a detailed computational fluid dynamics (CFD) simulation of a high-loading centrifugal compressor from design to off-design conditions after performing experimental validation to reveal energy loss mechanisms and their relationship more clearly with secondary flows in the compressor.

What is a case analysis of Industrial centrifugal compressor?

For the case analysis in this paper, the model stage of an industrial centrifugal compressor (Case I) is employed, which has all the geometric parameters, operating conditions, and measured performance curves at three machine Mach numbers (i.e., M u = 0. 85, 0.75 and 0.65).