September 2000

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HP Reliability: Consider toroidal chamber rotary compressors

In 1970, the first of five toroidal chamber rotary compressors entered service in nuclear test loops. Each of these machines was used to circulate 2,240 scfm of CO2 at 660°F; the s..

Bloch, Heinz P., Hydrocarbon Processing Staff

In 1970, the first of five toroidal chamber rotary compressors entered service in nuclear test loops. Each of these machines was used to circulate 2,240 scfm of CO2 at 660°F; the suction and discharge conditions were 870 and 942 psia, respectively. Since then, many of these single- or multi-stage rotaries have seen service on gases ranging in molecular weight from 2 to 44, flows from an extremely low 15 scfm to as high as 39,000 scfm, and power inputs from 15 to over 600 hp. In essence, these rotary compressors offer the same performance as traditional low-flow compressors, but do so at considerably lower speeds: 500 - 6,000 r

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