Dear All,
I have analyzing reciprocating compressors and came across various discussion threads where specialists confirmed that settle out concept is not applicable for recirpocating compressors considering the machine's cylinder is having its own integral suction and discharge check valves and there is no retro flow through the machine as in the case of centrifugal compressors.
However, on the other hand, I have been still seeing many Engineers claiming that reciprocating compressors do require settle out calculations which quite confuses me. The spill back control bypass valve which is employed for maintaining the compressor's suction pressure DOESNT open when the compressor shutdowns. Additionally, it shall be Fail safe open position and hence the suction equipment (scrubber or cooler) shall either be rated for the full design pressure of the discharge side or equipped with a PSV for its overpressure protection.
My question is.. is there really settle out calculations applicable for reciprocating compressors.. do you foresee the requirement for having a bypass SDV/BDV which is to be opened when the compressor stops such that the pressure at the suction and discharge of the reciprocating compressor. Accordingly, designer himself would be imposing the concept of settle out although it may not be technically justfied.
Thanks
I have analyzing reciprocating compressors and came across various discussion threads where specialists confirmed that settle out concept is not applicable for recirpocating compressors considering the machine's cylinder is having its own integral suction and discharge check valves and there is no retro flow through the machine as in the case of centrifugal compressors.
However, on the other hand, I have been still seeing many Engineers claiming that reciprocating compressors do require settle out calculations which quite confuses me. The spill back control bypass valve which is employed for maintaining the compressor's suction pressure DOESNT open when the compressor shutdowns. Additionally, it shall be Fail safe open position and hence the suction equipment (scrubber or cooler) shall either be rated for the full design pressure of the discharge side or equipped with a PSV for its overpressure protection.
My question is.. is there really settle out calculations applicable for reciprocating compressors.. do you foresee the requirement for having a bypass SDV/BDV which is to be opened when the compressor stops such that the pressure at the suction and discharge of the reciprocating compressor. Accordingly, designer himself would be imposing the concept of settle out although it may not be technically justfied.
Thanks
