Measured-flow arithmetic
Compressed-Air Leak Electricity Cost
Calculate reference volume, electrical energy and electricity cost from a measured leak flow and measured same-basis system specific energy. No hole-diameter orifice model is used.
Leak electricity arithmetic
The US DOE compressed-air evaluation protocol describes measured/trended load profiles and separate leak-flow quantification. ISO 11011:2013 assesses the whole compressed-air system from energy input through supply, transmission and demand. ISO 1217:2009/Amd1:2016 covers displacement-compressor acceptance tests for volume flow and power; it does not validate an arbitrary leak-hole formula.
No orifice prediction: diameter alone is insufficient. Real gas mass flow requires geometry/Cd, absolute upstream and downstream pressure, gas temperature/properties and choked/subcritical regime, followed by an explicit reference-volume conversion. Use a calibrated flow method, leak-down test, bag method or validated model as appropriate.
The cost result includes electricity energy only. Demand charges, maintenance, lost production, repair and benefits from changing system pressure/control are outside this arithmetic.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
