If the pressure ratio of a reciprocating compressor remains constant but the inlet and outlet pressures decrease, can the compressor still operate normally?
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The two-stage reciprocating compressor is designed with an inlet pressure of 0.6 MPa and an outlet pressure of 1.9 MPa. If this compressor is to be used to transport gas with an inlet pressure of 0.1 MPa and an outlet pressure of 0.3 MPa – where the pressure ratio is roughly the same – can the compressor operate properly under such conditions? If that’s not possible, can certain technical modifications be made to the compressor (such as replacing the valves) to adapt it to the new operating conditions? Furthermore, if it can operate under new conditions, will the gas handling capacity of the compressor change? I would be grateful if you could offer your guidance. Thank you!
I work for a compressor manufacturer. You can send over the relevant parameters, and I’ll calculate it for you
1. If the system pipeline resistance remains acceptable after reducing the pressure, it is feasible from a pressure perspective. 2. After the pressure is reduced, the gas density decreases, resulting in a lower mass flow rate at the same volume flow rate
Re-calculation is needed to determine whether parameters such as the gas valve meet the requirements
The capacity is only about two-thirds; it can be made to work by adjusting the air valve, but that’s too extravagant: lol
First of all, I personally guess that you might be trying to use nitrogen. This approach is not impossible; the main factors to consider are the resistance levels and the trend in rising exhaust temperature. Additionally, I believe that the same type of medium should be used. If the molecular weight of the new medium is greater than that of the medium originally specified, I suggest that you consult the manufacturer of the original equipment and consider purchasing a set of specialized gas valves.
If the operating conditions deviate too much from the original design, it is recommended to consult the equipment manufacturer.