R.Blakely [QUESTIONS] http://www.instructables.com Member Feed Fri, 24 May 2013 23:14:08 PDT BLOX v1.01 Vortex tube should have a supersonic nozzle for efficiency; a simple drilled hole will not allow supersonic flow, right? http://www.instructables.com/answers/Vortex-tube-should-have-a-supersonic-nozzle-for-ef/ QCWHMTAG68GXROW R.Blakely By: R.Blakely

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