Search Results for "centrifugal pump"

1. Modeling a Pump with a VFD to Maintain a Fixed Pressure [Article]
   Often a pump needing to provide a fixed pressure at the pump discharge does so by adjusting the pump speed with a variable frequency drive (VFD). This is not a native feature of the PIP
2. What is NPSH for a tank open to atmosphere? [Article]
   Questio
3. How Not to Save Energy by Installing a High Efficiency Motor [Article]
   As Seen in the June 2011 Issue of Plant Engineering Magazine I
4. Piping System Brain Teaser #2 [Article]
5. Pump Curve Accuracy [Article]
   Introduction What are the attributes that make one pump selection software package superior to another? Aside f
6. Value of the System Resistance Curve (Part 2) [Article]
   System Operation with a System Resistance Curve Introduction This article is a
7. What is suction specific speed and how can it be used in centrifugal pump select... [Article]
8. What Information is needed to Accurately Model a Real-world Piping System in PIP... [Article]
   Introduction One common support question we get is "What information is needed to accurately model a real-world piping system in PIPE-FLO?" The answer to tha
9. Value of the System Resistance Curve (Part 1) [Article]
   Introduction This knowledge base article describes the value of a system resistance curve in understanding of how the various elem
10. Finding System Bottlenecks [Article]
    System Bottlenecks This case study is based on an actual analysis of a reclaim water pump system in a nickel mining operation. The reclaim water system consisted of four 10-stage vertica
11. Pump Sizing [Article]
    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 t
12. How to Model a Pressure Independent Control Valve in PIPE-FLO [Article]
    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 pr
13. VFD Pumps Can Cut Energy Costs but Static Head Reduces Savings [Article]
    The pump affinity rules describe how pump flow rate (Q), total developed head (H), and power consump... change with a change of impeller speed (N) for a centrifugal pump or fan, and are shown in E
14. Running Dissimilar Pumps in Parallel [Article]
    When running pumps in parallel like the system shown in Figure 1, it is generally agreed upon that the pumps should be identical. However, there may be applications or situations where it is nece
15. Case Studies Overview [Article]
    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
16. Formats for Centrifugal Pump Curves [Article]
    When displaying pump curves in PIPE-FLO or PUMP-FLO, the amount of information displayed on the curve varies based on the way the pump performance data was entered. In this article we will discuss bot...
17. Reading a Pump Curve [Article]
    Pump Name and Speed The customary naming of a pump provides the discharge diameter, suction diameter, and maximum impeller diam
18. Pump Curve Landmarks [Article]
    Pump manufacturers provide pump head curves showing the head, and efficiency as a function of the flow rate through the pump. This knowledge base article describes the various landmarks foun
19. NPSH & Pump Selection [Article]
    Pump Net Positive Suction Head (NPSH) is one of the most misunderstood aspects of pump hydraulics and can be one of the most damaging. Many technical articles and papers have been written on the subje...
20. Change in Viscosity Correction Formulas [Article]
    For viscosity corrections, previous versions of PUMP-FLO used a set of equations that were derived from Figures 71 and 72 of the Hydraulic Institute Standards (14th edition, Hydraulic Institute, 1983)...