Confused why a 4 in. pipe and 3/8 in. tube both show the same inches-of-water → PSI conversion? Today we dive into the math behind pounds-per-square-inch—and why diameter drops out of the equation.

The conversion of low-grade waste heat into electrical energy is an attractive opportunity to harvest a ... W. Thermal-energy conversion: Under pressure. Nat Energy 1 , 16101 (2016 ...