As hose diameter increases, what happens to friction loss?

When hose diameter increases, friction loss decreases due to the principles of fluid dynamics. Friction loss is related to the hose's internal diameter; larger diameters allow water to flow more freely with less resistance against the walls of the hose. This results in a lower amount of energy being converted to heat due to friction, which in turn reduces the pressure loss along the length of the hose.

This principle is important in fire operations as it impacts the efficiency of water delivery during firefighting efforts. Understanding the relationship between hose diameter and friction loss helps operators make better decisions regarding hose selection to maximize flow and minimize pressure losses.