Table of Contents

## What is a compressor curve?

Compressor characteristic is a mathematical curve that shows the behaviour of a fluid going through a dynamic compressor. A compressor increases the pressure of a fluid passing through it, so that the exit pressure is higher than the inlet pressure.

## Are axial compressors more compact?

Axial compressors are high-speed, large-volume compressors but are smaller and somewhat more efficient than comparable centrifugal compressors.

**What are the parts of an axial flow compressor?**

The basic components of an axial flow compressor are a rotor and stator, the former carrying the moving blades and the latter the stationary rows of blades.

### What do you understand from axial flow compressor?

Axial flow compressors are comprised of multiple stages of rotating and stationary blades (or stators), through which air is drawn in parallel to the axis of rotation and incrementally compressed as it passes through each stage.

### What is the advantage of axial compressors over centrifugal compressors?

Answer C is correct. Greater pressure ratios are possible, with axial compressors suitable for pressure ratios up to 10:1, while centrifugal compressors are suitable only for 4:1 pressure ratios. Axial compressors also require less frontal area and are more expensive to operate versus centrifugal compressors.

**What are the 2 main elements of an axial flow compressor?**

An axial flow compressor has two basic elements – a rotor and a stator. The rotor has blades that are fixed on a spindle.

## What is the advantage of axial flow compressor?

Modern engines can use 10-15 compressor stages. Advantages of the axial compressor are its higher flow rate and greater pressure ratio, which results in higher thrust and fuel efficiency. This makes it better suited to applications where the thrust of the engine itself is the motive force for the aircraft.

## What is the difference between centrifugal compressor and axial compressor?

Flow-through centrifugal compressors are turned perpendicular to the axis of rotation, while the air in axial compressors flows parallel to the axis of rotation.

**What is meant by compressor turndown?**

Turndown is the percentage below full load flow the compressor can run without experiencing surge. For example, 15% turndown means the unit can run at 85% flow or higher, as equipped without hitting surge.

### How is axial compressor performance shown on a compressor map?

Axial compressor performance is shown on a compressor map, also known as a characteristic, by plotting pressure ratio and efficiency against corrected mass flow at different values of corrected compressor speed.

### What is the theoretical characteristic of a compressor?

Theoretical characteristic curve of the compressor is the plot to show behavior of the fluid without considering losses due to shock and friction as it passes through the compressor at different constant speeds. The curve as shown in Figure 3. is plotted between pressure coefficient as shown in fig. From fig.

**Which is more efficient a centrifugal compressor or an axial compressor?**

Axial compressors are generally smaller and significantly more efficient than comparable centrifugal compressors. The characteristic feature of an axial compressor, as its name implies, is the axial direction of flow through the machine.

## How does a multi stage axial flow compressor work?

A multi-stage axial flow compressor has two or more rows of rotating blades operating in series on a single rotor in a single casing. The casing contains the stationary vanes (stators) for directing the air or gas to each succeeding row of rotating blades.