Pipe Pressure Drop Calculations from Pipe Flow Software
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Pipe Flow Expert - View some of our Example Systems

A number of example systems are supplied with our Pipe Flow Expert program to explain and demonstrate the drawing and calculation capabilities of the pipe flow and pressure drop software.

By opening, reviewing and solving these example systems using the free trial version of the software, users will see how our Pipe Flow Expert software solves the fluid flow rates in each pipe to produce a pressure balance at each node that gives the steady state flow condition within the pipeline network. Each example is intended to introduce the user to a new feature of Pipe Flow Expert.

Descriptions of the supplied example systems can be viewed by clicking on the following links.

Flow under gravity between reservoirs View Example 01: Flow between Three Reservoirs
This is a classic example that is found in most text books. Three reservoirs are each located at different elevations and are joined at a common point by three pipes.
Flow from a tank through an outlet pipe View Example 02: OutFlow from a Tank along a pipe
This demonstrates flow from a tank through a single pipe that has a set demand flow at its end point.
Flow from a tank through a pipe that splits into multiple pipes View Example 03: Flow from a Tank to Three Outlet Points
In this example the discharge is to 3 outlet spray positions. Each spray nozzle requires a 2.3 psig pressure to produce the correct spray pattern.
Flow pumped from one supply tank to three discharge containers View Example 04: Pumping fluid to Three Tanks
Fluid is to be transferred from a tank at low level to 3 tanks located at a higher level. A pump is needed as the motive force to provide the energy to move the fluid.
Fixed Head Pumping from one supply tank to three discharge containers View Example 05: Fixed Head Pumping to Three Tanks
The flow rate along all paths has been specified. The problem is to determine the pump head needed to deliver the total flow. A fixed head pump is used to add pressure to the model. An initial added pressure of 20 ft head of water has been chosen as a possible solution.
Flow pumped from one supply tank to three discharge containers View Example 06: Fixed Speed Pumping Chemical Transfer System
This system design includes a stainless steel pump used to transfer a chemical to two tanks at a set flow rate to each tank. The flow to each tank is regulated by a flow control valve set to limit the flow rate. The system includes a special filter which has been modeled by adding a Component to pipe P3.
Pump fluid through pressurized pumping stations View Example 07: Flow from Pressurized Pumping Stations
This example demonstrates the power and flexibility of the Pipe Flow Expert software. Some pipes and pumps have been temporarily removed from the system, leaving isolated legs where flow will not occur. Pipe Flow Expert is able to identify this situation and find a solution for the remainder of the pipe network.
Fluid flow in a water circulation system View Example 08: Flow in a Water Circulation System
This system demonstrates a recirculation design where some of the fluid is returned to the start point to be circulated again and some of the fluid is removed. The fluid to be removed is specified by setting a Demand Out-flow from the system at various nodes.
AHU - Flow in an air handling cooling system View Example 09: Cooling System, 12 Air Handling Units
This system provides cooling water to the cooling coils of 12 AHU’s located on 3 floors of a building. The cooling tower is located at the roof level.
Flow of compressed air in a distribution system View Example 10: Compressed Air Distribution
This example shows a compressed air system where the air is distributed around a 'ring main loop' system to maximize distribution efficiency when some demands are not in use.
Flow in a heating, ventilation and air conditioning system View Example 11: HVAC System (heating, ventilation and air conditioning)
In this example, the heating, ventilating and air-conditioning system to three floors is provided via ceiling mounted fan coil units. The cooling circuit contains a separate pump to supply each floor.
Negative flow means the pipe direction must be reversed View Example 12: Reverse Pipe direction where calculated flow is negative
A water distribution system has been designed to deliver a different set flow rate to each of 4 take-off points. During the drawing of the system, Pipe 2 has been added assuming a flow direction that is not correct. This example shows how Pipe Flow Expert recognizes this and reverses the incorrect flow direction.
Flow through a system with a turbine View Example 13: Energy Recovery with Turbine System
This water distribution system incorporates two pumps to raise water to higher elevations. A turbine has been designed into the system to recover some of the energy used in the water distribution.
Flow through a system with a trubine View Example 14: Top up Tanks with Pressurized Recirculation System
Three similar views of a domestic heating system are shown. All layouts are fully recirculating with no flow outlets from the system. A top-up tank is incorporated into the designs to make up any leakage from the system.
Flow through a system with a trubine View Example 15: Replacement Pipe Size
Water is being transferred from an upper reservoir to a reservoir at a lower level using the difference in head between the surface elevations as the motive force. It is proposed to replace the leaking system with new PVC (AWWA) pipe.
Flow through a system with a trubine View Example 16: Step by Step Walkthrough Example
Pipe Flow Expert will allow prospective users to create small systems which can contain up to 5 pipes when the software is in trial mode. The Pipe Flow Expert help file contains detailed step-by-step instructions for each action needed, to create and solve this example system.

Next, read about verification of the Pipe Flow Expert calculation results

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