Pipe Network  Pipe network is analyzed based on: 1. Conservation of mass 2. Conservation of energy.

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Presentation transcript:

Pipe Network  Pipe network is analyzed based on: 1. Conservation of mass 2. Conservation of energy

 Conservation of mass At any node: Q in = Q out + Demand

 Conservation of energy Within each closed loop: H l1 = H l2 + H l3 Because energy loss between two nodes is independent of the flow path. H l1 H l2 H l3

 Hardy-Cross method is used to design pipe network.  The method can be applied to a small network of several loops.  Large network can not be designed because of the complexity and time consuming.  Software such as WaterCAD can be used easily to design water networks.

Flow Master  First, Flow Master software is used to design a single pipe.  It is a good practice understand several concepts of pipe flow.  It is also a good startup for WaterCAD.