(BTU/Hr) BTU/Hr is a common measure of heat transfer rate. Capacities of furnaces and boilers are for example expressed in thermal units per hour (British unit). One BTU/Hr is the amount of heat required to heat one pound of water one degree Fahrenheit per hour.
BTU/Hr is the unit that expresses how much a machine heats up the surrounding area.

Material that allows heat or electric current to flow.

See also Semiconductor, Electric Field Strength, Electric Flux Density, Electromagnetic Lens, Tesla, and Thermal Units Per Hour.