HEY I'm designing chilled water cooling system with closed loop its huge and I'm phasing some Difficulties I don't know if watercad can handle it but I'm trying any way, the minor loss coefficient was derived from which equation? and how should I deal with it for valves and pipes??? any help please
Minor loss coefficients are determined experimentally. There are many sources for standard minor loss coefficient values to be used in various situations (tees, bends, valves etc.). The Bentley Hydraulics and Hydrology applications provide many of these standard values in an Engineering Library.
To view these:
To apply one of these to an element:
The standard minor loss equation is:
H = Minor Head Loss K = Minor Loss Coefficient V = Velocity of FlowG = Gravitational Acceleration Constant (about 9.81 m/s^2, or 32.174 ft/s^2)
The minor loss coefficient applied to the element will be used in the minor loss equation and the result will be displayed in the "Results" section in the field "Headloss (Minor)".
Adding Minor Losses to Pipes
Modeling minor losses at a valve or a tee
Please elaborate on any other questions you have regarding the system you are modeling.
Bentley Technical Support
Answer Verified By: A.S
Please note that a subsequent reply to this thread has been split to a new discussion here: Importing fittings into WaterCAD
Jesse DringoliTechnical Support Manager, OpenFlows ProductsBentley Communities Site AdministratorBentley Systems, Inc.