Why Compressed Air is Expensive

Compressed air has a fair claim to being the most expensive utility on any industrial site, and the least respected. It is generated from electricity at strikingly poor efficiency, leaks away silently through every worn fitting, and is treated by most of its users as free. An energy manager who understands why air costs what it does holds one of the most reliable saving opportunities in industry, because on a never-examined system, 30% reductions are routine. This lesson establishes the economics everything else in the course builds on.