Category » Articles & Publications

There were 22 articles found in this category:

1. Value of the System Resistance Curve (Part 1)
   Introduction This knowledge base article describes the value of a system resistance curve in understanding of how the various elements in a fluid piping system operate together. System resistance curves can be used to graphically determine flows and pressures in process systems where there is ty ...
2. Value of a System Resistance Curve (Part 2)
   System Operation with a System Resistance Curve Introduction This article is a continuation of the newsletter article dealing with the System Resistance Curve. As discussed in the last installment we saw how a system curve was created by calculating the head loss for each pipeline in the system ...
3. How to model a Pressure Independent Control Valve in PIPE-FLO
   Introduction The use of Pressure Independent Control Valves (PICVs) has gained wide acceptance in many HVAC chilled and heating water applications. Quality PICVs with high turndown provide accurate control of flow rate regardless of the differential pressure fluctuations across the valve. This a ...
4. VFD Pumps Can Cut Energy Costs but Static Head Reduces Savings
   The pump affinity rules describe how pump flow rate (Q), total developed head (H), and power consumption (P) change with a change of impeller speed (N) for a centrifugal pump or fan, and are shown in Equation 1 below. Since the flow rate changes in direct proportion to the speed, and head change ...
5. Minimizing Pumping Costs
   In this example we will see how selecting the proper design point can improve a pump's operation and minimize pumping cost. Before a pump is selected for a given application, a series of calculations must be performed to determine the system's static head and pipeline head loss for a given desi ...
6. Balancing a System
   Piping systems providing heat transfer fluid to a variety of loads can present their own special problems. Since there are multiple paths for the fluid to travel, the system naturally balances so the pressure drop around each loop is equal. It is highly unlikely that when all of the valves are ...
7. Correcting Problem Control Valves
   Piping systems are a collection of pumps, control valves, components, tanks and vessels. Often even the simplest piping system can present a large problem when it is not operating properly. In this example, we have a single pump circuit that pumps from a storage tank to a pressurized tank. A he ...
8. Using Overtime In Ship Deballasting Operation
   Background A naval architect and PIPE-FLO® user recently called for technical support on a unique piping system problem he was trying to solve. He was working with a shipyard and was tasked with determining a method to pump out six ballast tanks on a ship while the ship's cargo was being loa ...
9. Method of Solutions Version 2009
   These method of solution files are provided for users who want detailed documentation on the 2009 version of PIPE-FLO software and its modules. PIPE-FLO software incorporates industry standard calculation methods to insure consistent program operation and accurate results. Detailed documentati ...
10. Method of Solutions Version 2007
    These method of solution files are provided for users who want detailed documentation on the 2007 version of PIPE-FLO software and its modules. PIPE-FLO software incorporates industry standard calculation methods to insure consistent program operation and accurate results. Detailed documentati ...
11. Method of Solutions Version 2005
    These method of solution files are provided for users who want detailed documentation on the 2005 version of PIPE-FLO software and its modules. PIPE-FLO software incorporates industry standard calculation methods to insure consistent program operation and accurate results. Detailed documentati ...
12. Method of Solutions Version 2004
    These method of solution files are provided for users who want detailed documentation on the 2004 version of PIPE-FLO Professional and its modules. PIPE-FLO software incorporates industry standard calculation methods to insure consistent program operation and accurate results. Detailed documen ...
13. Time Simulation with PIPE-FLO
    It is often necessary to see how a piping system operates over time. For example, as a tank is pumped down, the static head increases resulting in a smaller flow rate through the pump. This reduction in flow rate causes the tank to take longer to pump down. This type of calculation is called an ...
14. Case Studies Overview
    There are a variety of case studies on the Engineered Software Website, with more being added. These case studies were created for some of the most typical applications PIPE-FLO is called on to analyze. Pump Sizing - Selecting the proper pump is the most important step in the designing of a ...
15. Pump Sizing
    Selecting the proper pump is the most important step in the development of a piping system. The pump must be sized to handle the desired flow rate at the required pressure from the supply to the destination. In order to size a pump, you must take into account the change in elevation and pressur ...
16. Design Energy Efficient Pumping Stations with PIPE-FLO
    Article Published in World Water November/December, 2008 by Roy Lightle, Application Engineer Fluid piping software can be used to design highly energy efficient and cost effective pumping systems. Roy Lightle of Engineered Software Inc. explains how PIPE-FLO® Professional software could f ...
17. Gaining a Clear Picture of Pump Operation
    When a piping system problem is found, the first response often is to add a pump. Using a piping system analysis tool can be a better solution. In this paper we discuss what a clear picture of piping system operation can provide for the pump system trouble-shooter. Gaining a Clear Picture of Pum ...
18. Using Fluid Flow Software in Plant Operations
    Fluid flow software provides a clear picture of how a piping system operates by calculating the flow rates and pressures in the system. Initially this software was mainly used to design the piping system, but recently more plant personnel are using this type of software to simulate the operation ...
19. Fluid Flow Software vs. Spreadsheets
    The traditional approach for sizing pipelines in fluid piping systems is done using spreadsheet programs. These provide a platform for organizing data and performing the single pipeline calculations for pipeline friction loss. However, in order to sustain a competitive advantage in today's mark ...
20. Using a Piping System Model for Process Safety Management
    This article describes how commercially available fluid piping software can be an integral tool in developing and implementing a PSM program. Introduction A Process Safety Management of Highly Hazardous Chemicals (PSM) program is mandated by OSHA (standard, 29 CFR1910.119) to prevent the unwante ...