Dynamic solutions for a fluid world™


AFT Fathom Added to Flowserve Pumping System Analysis Course

Flowserve built their Learning Resource Center to provide the equipment, conditions, and expertise students need to experiment, test, modify, and verify the "what ifs" of the tools they use every day in operating and maintaining fluid handling systems. The Learning Resource Center means students receive the kind of training that is not just theory, not just hands-on, but a balanced combination. Students have access to:

• Four state-of-the-art classrooms.

• A 2,300 square foot static lab equipped with modern process equipment, including pumps, control valves and mechanical seals.

• Four 900 square-foot power labs equipped with complete pumping systems.

The analytical side of this balanced approach includes "Pumping System Analysis – Level I" and "Pumping System Design – Level I". Augmenting these courses, Flowserve will be offering classes on AFT Fathom.

"Flowserve is expanding its training curriculum by adding a Pumping System Analysis - Level I course." explains Dan Wood, Flowserve Educational Services Manager. "The heart of this 3-day course is learning how to use the 10 Pumping Principles. By learning these principles, the student learns how to analyze an existing pumping system, determine problems, and recommend solutions to those problems. However, the true power and efficiency of the analyst's knowledge cannot be exploited without powerful tools, such as AFT Fathom. Therefore, a 1-1/2 day course on AFT Fathom is integrated in the same week as the "Pumping System Analysis - Level I" and "Pumping System Design – Level I" courses. By combining these courses, the true power of AFT Fathom is realized and the pump system analyst will quickly learn that AFT Fathom is the best tool in their troubleshooting toolbox."

The Learning Resource Center is located in Irving, Texas, right in the heart of the Dallas/Ft. Worth Metroplex within minutes of the DWF International Airport.

Course schedules and descriptions may be found at http://www.flowserve.com/education/schedule_cust.htm.

Fluvanna Power Project

Bibb & Associates of Kenexa, KS is the EPC contractor for Tenaska's 890MW combined cycle power plant in Fluvanna County, Virginia.

The Fluvanna Generating Station is a dual fuel plant capable of burning both natural gas and No. 2 fuel oil in its three GE gas turbines and Deltak heat recovery steam generator with duct burner. 410MW of the total generating capacity is provided by a GE condensing steam turbine. Cooling for the main condenser and auxiliary heat exchangers is provided by a system including three, 138,000 gpm main circulating pumps supplying cooling water through 78" diameter supply and return lines in conjunction with a 14 cell cooling tower.

Bibb & Associates enlisted AFT's expertise to model the cooling system and analyze its behavior under a variety of pump shutdown and startup scenarios along with associated main discharge valves opening/closing. AFT Impulse 3.0 was used to model the system and included modeling four quadrant pump hydraulics and inertia effects along with the several vacuum breaker/air release valves in the system and partially filled pipes near the pumps at start up. The completed model consisted of 112 pipes plus the 34,140 tubes in the main condenser. A total of nine cases were analyzed with the results clearly illustrating transient liquid flows, air flow through the vacuum breaker/air release valves and, or course, transient pressures.

Fluvanna Generating Station will depend on its main cooling system for reliable operation. Modeling the system with AFT Impulse allows it designers to insure in the design stage this critical system will meet that requirement.

Importance of System Modeling Highlighted in Chemical Processing Magazine

Importance of system modeling highlighted in Chemical Processing magazine

Chemical Processing magazine's January 2003 article "Avoid the 'Fatal' Five" discusses a number of important issues related to pump selection and operation including; improper sizing, disregarding system characteristics, running dry, considering cost alone and lack of training.

Pump sizing and system characteristics are factors where system modeling software is an enormous help. The article includes a discussion of these and other factors by representatives from several pump manufacturers and AFT's own Trey Walters.

AFT IntelliFlow Technology Featured in Pumps & Systems Magazine

With pumping systems accounting for about 20% of the world's energy usage, a great potential for cost and energy savings exists within such systems. Unfortunately, pumping system design engineers work in an environment where budget and schedule constraints limit their ability to optimize their systems using traditional methods. "Optimizing Pumping Systems To Minimize First Or Life-Cycle Cost", featured in the October 2002 issue of Pumps & Systems magazine, describes the new technology of IntelliFlow® embodied in AFT Mercury that now allows the systems engineer to truly optimize the sizing of their systems' piping and components resulting in huge savings potentials. Jointly authored by Trey Walters of AFT and Judy Hodgson of Dupont, the article also presents several real world examples where life cycle cost savings of up to 70% were achieved. The Pumps & Systems article was derived from "Optimizing Pumping Systems to Minimize First or Life-Cycle Cost", presented at the 19th International Pump Users Symposium.

AFT IntelliFlow® Technology Featured at Pump Expo

AFT's Trey Walters and Dupont's Judy Hodgson jointly presented the paper " Optimizing Pumping Systems To Minimize First or Life Cycle Cost" at the Pump Expo in Fort Washington, PA October 22. The paper describes the intelligent system sizing technology behind AFT Mercury, IntelliFlow®, and presents case histories of the application of this technology to four pumping systems. Demonstrating the significant benefits to be derived with intelligent system sizing, the case histories illustrated cost savings on the subject piping systems ranging from 17% to 72%. The case histories illustrate using AFT Mercury to optimize system design for:

  • control valve vs. vfd
  • a wastewater system optimizing pipe size vs. capacity
  • a sulfuric acid system including the varying effects of corrosion with velocity
  • molten sulfur transfer system optimizing pump sizing including variability of pump maintenance costs with distance from best efficiency point.

You can read the full paper: 

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