Regarding the air compressor nameplate
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This post was last edited by yxmqh on 2010-5-24 17:08. I have a question: does the flow rate indicated on the air compressor’s nameplate refer to the flow rate under standard conditions? If I want to calculate the outlet diameter of the air compressor, do I need to convert the flow rate indicated on the nameplate? Could some expert please provide an answer? Thank you
In my opinion, the flow rate indicated on the compressor’s nameplate refers to the flow rate discharged by the compressor’s pistons; generally, the rated displacement PV of the last-stage piston is the flow rate PV discharged by the compressor. Because air compressors are positive-displacement machines. Convert the exhaust flow rate based on the exhaust pressure. The formula is P1V1=P2V2. Therefore, if one wants to determine the diameter of the compressor’s outlet pipe, it is necessary to convert the flow rate indicated on the nameplate.
It is generally the volumetric flow rate in the imported state, with the unit being cubic meters per minute
For example: The nameplate indicates 8kgf/cm2 (square centimeters), 50hz, 37kw, 820kg. 8kgf/cm2 refers to the rated pressure; 8kgf/cm2 is equivalent to 0.79MPa. 50hz denotes the frequency of the power supply, while 37kw indicates the power rating of the motor required. 820kg is likely the weight of the entire machine. Volumetric flow rate is also known as displacement or nameplate flow rate in China. Put simply, at the required exhaust pressure, it refers to the volume of gas discharged by the air compressor per unit of time; when converted to the intake conditions, this is the volume value at the intake pressure and under the corresponding intake temperature and humidity at the first-stage intake connection. The unit is m3/min. Differences and similarities between the volumetric flow rate of a compressor and the air consumption of pneumatic components: The volumetric flow rate of a compressor refers to the flow rate of free air, while the air consumption of pneumatic components refers to the flow rate of air under compressed conditions. The conversion formula is: Q_self = Q_pressure * ε, with units of m3/min. Here, ε = P_discharge (absolute pressure) / P Inhale (absolute pressure) = (P_discharge (gauge pressure) + 1.033) / 1.033 = (P’_discharge (gauge pressure) + 0.1013) / 0.1013. Where P_discharge (gauge pressure) is in units of kg/cm2, and P’_discharge (gauge pressure) is in units of MPa