Martti Veuro

Principles of HEVAC design Course Spring term 2012 Fluid mechanics Pressure loss / drop calculations in pipe systems

Hydraulics Introduction Pipe dimensioning Fluids Pipe systems Open and closed systems Pipeline systems Pressure Definition Overpressure, under pressure, pressure difference Static pressure, dynamic pressure and total pressure Types of flow Viscosity, dynamic and kinematic Reynolds number Laminar flow Turbulent flow Classification of flows Pressure losses of flow in pipes Pressure losses and flow resistance Pressure losses by friction Moody diagram

Pressure losses of flow in pipes Local losses Local loss coefficients kv value Total pressure losses in pipe systems Pressure losses by friction Pressure losses by local losses Characteristic curve of pressure losses in pipe systems Calculations of pressure losses Procedure Dimensioning diagrams Hydraulic diameter Design of pipe networks Placing and construction of pipework General design procedure Pipe diameter selection