potentialverand's comments

potentialverand | 6 years ago | on: Espresso Machine Powered by Tcl/Tk

I'm curious about your measured pressure drop between the pressure at the pump, and the pressure at the group head. Since coffee machines are low flow and travel through a short distance of presumably stainless steel pipe, my quick calculations indicate a minimal pressure drop compared to the expected 9 bar of pressure used to pull a shot.

Temperature is another kettle of fish as you have demonstrated.

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