Head
The pressure exerted by a liquid as a result of its depth, expressed as vertical distance. For water, 1 foot of head equals 0.433 PSI. In heat exchangers, the part that directs flow into or out of the tubes.
The pressure exerted by a liquid as a result of its depth, expressed as vertical distance. For water, 1 foot of head equals 0.433 PSI. In heat exchangers, the part that directs flow into or out of the tubes.