Constant RPM of gas compressor

In summary, the conversation is about understanding gas compressors and their behavior at constant RPM. The person is questioning if the volumetric flow rate remains the same and if the power, voltage, and current vary. They are investigating why there are changes in pressure and flow rate entering the compressor and are seeking an explanation for the decrease in pressure and its possible relationship to an increase in flow rate. They also express interest in learning more about the process and flow monitoring, as there seems to be a significant drop in inlet pressure and gas flow.
  • #1
peter9321
1
0
I would like to clear out my understanding of gas compressor. If it is moving at constant RPM, is it mean that it can only allow same volumetric flow rate all the time? So the power will remain constant too, (P=VI) then voltage and current will varies. My investigation is to find why there is changes of pressure and flow rate entering the compressor. Could anyone provide me some good explanation please. Thanks. I would like to know why the pressure inlet for gas compressor is decrease and I am wondering is it related to flowrate (in MMSCFD) as the flowrate is increase?
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  • #3
I would like to hear a little more about your process and flow monitoring. A quick glance at the data your provided shows a noticeable drop in inlet pressure. A drop in excess of 1 bar would mean a statistically significant reduction in gas flow. You are essentially correct in that the compressor is (or should be) relatively static. This drop in incoming gas would reflect in the outlet.
 

1. What is a constant RPM of a gas compressor?

A constant RPM (Revolutions Per Minute) of a gas compressor refers to the consistent speed at which the compressor's motor operates. It is a measure of how many times the motor completes a full rotation in one minute.

2. Why is maintaining a constant RPM important for a gas compressor?

Maintaining a constant RPM is important for a gas compressor because it ensures consistent and efficient operation. A fluctuating RPM can cause the compressor to overwork or underperform, which can lead to equipment failure and decreased productivity.

3. What factors can affect the constant RPM of a gas compressor?

The constant RPM of a gas compressor can be affected by various factors, such as changes in gas flow rate, changes in gas composition, and changes in ambient temperature. Improper maintenance or mechanical issues can also impact the RPM.

4. How is the constant RPM of a gas compressor controlled?

The constant RPM of a gas compressor is typically controlled by a motor controller or variable frequency drive (VFD). These devices monitor the motor's speed and adjust the frequency of the electrical power to maintain a consistent RPM.

5. What are the benefits of a gas compressor with a constant RPM?

A gas compressor with a constant RPM offers several benefits, including increased efficiency, reduced wear and tear on equipment, and improved safety. It also allows for better control and monitoring of the compressor's performance, which can lead to cost savings and increased productivity.

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