Internal slip

Performance of a rotary positive-displacement compressor can be evaluated using the same criteria as a positive-displacement pump. As constant-volume machines, performance is determined by rotation speed, internal slip, and total back-pressure on the compressor. 

Internal slip is simply the amount of gas that can flow through internal clearances from the discharge back to the inlet. Obviously, internal wear will increase internal slip. 

Figure 24.10 (a) Internally slipped martensite, (b) Internally twinned martensite. 

Uses Antitoam tor textiles antitoam tor nonaq. epoxy, urethane, and acrylate coatings degasses and imparts internal slip to UV-curabte coatings... 

Figure 3. Schematic sketch showing (a) internally slipped and (b) internally twinned martensite. The alternate serrations at the habit plane average the strain out to zero on a macroscopic scale...

Uses Aniifoam, deaerating agent, internal slip agent for nonaq. epoxies, urethanes, and acrylate coalings, esp. for grind phase of solvent-borne pigmented coalings... 

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