Which equation is used to solve for friction head?

To solve for friction head in a plumbing system, Bernoulli's equation is indeed utilized. This equation represents the principle of conservation of energy in fluid flow, which includes kinetic energy, potential energy, and pressure energy. When analyzing a fluid flowing through a pipe, it helps in identifying losses due to friction. Bernoulli’s equation accounts for the energy losses, allowing the calculation of the head loss due to friction as it relates to flow velocity, pipe diameter, and fluid characteristics.

While Pascal's equation is used to determine pressure differences within a fluid at rest and the continuity equation applies to the mass flow rate in systems (ensuring that mass flow is constant), these do not directly address the energy losses related to friction head. The hydraulic equation encompasses a broader range of fluid dynamics but is not specifically focused on friction head either. Therefore, Bernoulli's equation is the most appropriate tool for calculating friction head in this context, as it provides a framework to include those losses in the overall energy balance of the fluid system.