Roots compressors in MVR systems
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I have just started learning about MVR, and I have a question. Our company has a Roots compressor with an inlet steam pressure of 80 KPa and a temperature rise of 20 degrees, but we want to use it in an application where the inlet pressure is 40 KPa. Is it possible to do that? What impact does it have on the system? Please give some advice. Thank you!
Can the inlet pressure not be adjusted? It’s best to stay within the design parameters; there are no trivial matters in production
From the perspective of rotary compressors alone, the key parameters for selecting a compressor include the pressure ratio (exit pressure/inlet pressure), temperature rise, and flow rate – these are among the most important performance parameters of a compressor. Changes in inlet pressure and exit pressure are determined by whether they fall within the specified pressure ratio range, as well as by the specific operating conditions. As mentioned above, it is best to contact the manufacturer, and ensure that the operating conditions remain within the limits permitted by the design
The flow rate will decrease significantly; the inlet pressure drops from 80 kPa to 40 kPa, resulting in a large difference in gas density.