Articles

Using Pump Performance Curves in PIPE-FLO® to Maximize System Efficiency

A critical step in maximizing the efficiency of a piping system is properly sizing and selecting a pump that best suits the operation. PIPE-FLO® uses individual data points when modeling centrifugal pumps to simulate operation. This approach uses manufacturer pump curves for head, efficiency, and NPSHr to provide an accurate model of pump performance. This month, we will see how test curve performance data is effectively extracted for use in PIPE-FLO®.
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Performing a Pump System Assessment on a System with Multiple Loads

Over the last few months, the ESI News Brief has been exploring the intricacies of pump system operation and optimization. We’ve covered the challenges faced when establishing a pump system improvement program, how to develop an Energy Cost Balance Sheet, and how to work through the assessment process for a simple system. For our final installment we will explore how to evaluate a system with multiple loads by breaking it down into circuits with various elements.
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Modeling Circuit Setter Balancing Valves Using PIPE-FLO® Professional

Circuit Setters are often used to balance flow rates to heat exchangers in closed loop cooling water systems. Due to the steady state nature of the thermal loads, controlling the flow rates to each user with a fully automated control valve is not economically justifiable. The process of determining the fixed positions of the Circuit Setters to balance the system is iterative and time consuming. However, modeling the system in PIPE-FLO® to determine the valve position of each Circuit Setter is a quick and accurate process.
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California Utilities Ramp Up Water-Reduction Efforts

Courtesy of Treatment Plant Operator: Utilities across California are increasing efforts to educate customers on new water use regulations as the state enters its fourth consecutive year of drought. Penalties for noncompliance with the new water conservation mandate include fines of up to $10,000 a day. Outreach to connect with utility customers continues to expand as urgency for conservation increases.
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Using PIPE-FLO® To Simulate and Analyze Data from a Paper Pump Curve

A critical step in maximizing the efficiency of a piping system is properly sizing and selecting a pump that best suits the operation. PIPE-FLO® uses individual data points when modeling centrifugal pumps to simulate operation. This approach uses manufacturer pump curves for head, efficiency, and NPSHr and provides an accurate model of pump performance. This month, we will see how the paper pump performance data is effectively extracted for use in PIPE-FLO®.
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How Do You Use the Expansion Factor to Properly Size Equipment for Compressible Gas Applications?

When sizing equipment for piping systems with compressible gas applications, it is important to account for all factors that would influence the flow rate and pressure drop across the equipment. An under-sized device can result in catastrophic failure that damages the piping system and jeopardizes safety. Understanding how to account properly for gas expansion using the Expansion Factor and applying it to the incompressible fluid flow equation for each device can lower maintenance, operating, and capital costs.
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How to Validate Data Going In To Python Script

The true power and flexibility of the Data Import feature in PIPE-FLO® Professional comes to light when taking advantage of Python™ scripting to generate or retrieve data. However, locating and correcting bad data in the .csv file being read can be a challenge. Fortunately, Python™ provides some avenues to catch these issues in advance and help users make corrections in an expedient manner. Below is information about a Data Import script that is robust, accurate, and time-saving across multiple files and users.
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Use of Piping Simulation Software in Refineries

In the past, an engineering plant design process could take days to setup and debug now with the help of PIPE-FLO® Professional the entire system is designed in hours. This editorial showcases how PIPE-FLO® Professional provides refinery plant personnel with a powerful tool to safely design, manage, and troubleshoot plant systems while reducing operating, maintenance, and capital cost.
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Minimizing Choked Flow with PIPE-FLO®

When designing and installing a piping system for liquid service applications, the location and type of valve selected for process control plays a major role in whether the valve will operate smoothly or experience cavitation or choked flow. These severe operating conditions not only damage the valve and increase maintenance costs, they could also create safety hazards to plant personnel. Using PIPE-FLO® Pro to model the piping system, a problem such as choked flow can easily be identified and solutions evaluated in the model prior to implementation.
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A Financial Justification for Pumped System Improvements

In a typical industrial plant, 20-50% of the power consumed is for pumping applications. Pumped systems generally have an average system efficiency of less than 45%. This article shows how using readily available plant production data a pumped system improvement program once implemented, will increase plant profitability while reducing plant maintenance and operating costs.
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