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BlakeAn axial flow compressor compresses air by causing it to flow parallel to the axis of rotation, while a centrifugal compressor compresses air by directing it to rotate around an impeller. Axial compressors are more efficient for high flow rates and low pressure ratios, while centrifugal compressors are better suited for low flow rates and high pressure ratios.
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What is difference between axial flow and centrifugal LVAD?
Axial flow LVADs have a propeller-like rotor that spins along the device's long axis to propel blood forward, while centrifugal flow LVADs use a rotating impeller to draw blood into the device and then expel it outward. Centrifugal flow LVADs are generally more compact and have fewer moving parts compared to axial flow LVADs.
What is the difference between centrifugal and axial compressor?
Centrifugal compressors use centrifugal force to increase the velocity of the air which is then converted to pressure, while axial compressors use rotating blades to accelerate and compress air in the axial direction. Centrifugal compressors are more compact and simpler in design, but axial compressors are more efficient and better suited for high flow rate applications.
How do you find centrifugal compressor is in surge?
A centrifugal compressor is in surge when the flow rate through the compressor is reduced below the minimum stable flow rate, leading to a reversal in the direction of flow. This condition can cause the compressor to vibrate, make noise, and potentially damage the equipment. Surge can be detected by monitoring key parameters such as suction pressure, discharge pressure, and flow rate.
Which method control the capacity of large centrifugal refrigerant compressor?
Capacity control in large centrifugal refrigerant compressors is typically achieved through methods such as variable inlet guide vanes, variable speed drives, and slide valves. These methods help adjust the flow of refrigerant into the compressor to modulate its capacity based on changing system requirements.
How do you calculate surge in compressor?
To calculate surge in a compressor, you would need to determine the maximum flow rate and pressure that the compressor can handle without stalling. This can be done through performance mapping or testing. Surge is typically defined as the flow rate at which the compressor stalls due to flow reversal.
