The Principal of SAVvy Engineering LLC is Scott A. Vierstra, P.E.
Scott is a graduate of the Massachusetts Institute of Technology with degrees in Mechanical Engineering and Life Sciences.
6/3/81 to 1/15/1999 Senior Engineer, Steam Generation Section, Mechanical Engineering Division at American Electric Power Service Corporation, Columbus, Ohio. Was intimately involved with the operation, performance and maintenance of 22,000 megawatts worth of utility coal fired steam generators and their auxiliaries with project engineering/management responsibilities. Some highlights included the following:
developed American Electric Power's plan to comply with the 1990 Clean Air Act Amendment’s rules on the control of nitrogen oxide (NOx) emissions from its fossil fuel fired steam generators while developing expertise in both combustion side and post combustion control technologies.
conducted R&D and developed low cost combustion emission controls for roof-fired steam generators (Patent No’s. 5,771,823, 5,960,723 and 6,155,183).
developed test procedure and analyses of sources of emissions from cyclone fired steam generators.
developed modifications for major domestic supplier's low NOx burners to achieve additional 10% reduction in NOx emissions rate on five 800 megawatt coal fired steam generators.
integrated components from competing burner suppliers to restore unit efficiency initially lost with a low NOx burner retrofit while maintaining NOx emission rate reductions.
services loaned at a major domestic boiler manufacturer's request for development/analysis of their potential future generation of pulverized coal burners.
recognized with Exceptional Employee Award in 1996 for design modifications producing $50 million in cost savings.
design of overfire air system for 210 megawatt cyclone fired boiler series, producing 60% reduction in NOx emissions while saving >1% in unit O&M.
1/15/99 to Present Principal of SAVvy Engineering, LLC. Providing engineering services to electric utility industry and equipment suppliers including:
AES, Air Monitor Corporation, Allegheny Energy, American Electric Power, Arizona Public Service, Bechtel, Cinergy, Consumers Energy, Dayton Power & Light, EPRI, Dragon Space Ltd, Grand Haven Board of Light & Power, Hoosier Energy, LP Amina, Merrick & Company, Michigan Municipal Electric Association, Advanced Burner Technologies, Mobotec USA, Reaction Engineering International, Riley Power Inc. and Tennessee Valley Authority. Strong emphasis on combustion, firing and emissions related problems and solutions along with flow and heat transfer related issues. Evaluations and specification of solid fuels for steam generator firing. Also providing burner and overfire air design modifications.
Patents pending for external classifier design for ball tube pulverizers, pulverizer classifier for internal and external applications and reactor for steam and calcium carbide production. Finalist for Central Ohio 2011 Inventor of the Year.
Publications and Presentations Include:
An economical solution for reducing NOx emissions from cell burner boilers firing pulverized coal, with C. Penterson, DB Riley Stoker Corp., McGraw-Hill's Power, February, 1995.
NOx Control Demonstrated for B&W Springdale Roof-Fired Boilers, presented at EPRI NOx Controls for Utility Boiler Workshop, August 1996.
NOx Formation in Cyclone Fired Boilers as a Function of Furnace Design and Fuel, presented at EPRI NOx Controls for Utility Boiler Workshop, August 1996.
Balancing low NOx burner air flows through the use of individual burner airflow monitors, with D. Earley, Air Monitor Corp., presented at 1998 POWER-GEN International Conference, December 9-11, 1998.
Use of CFD Modeling to Guide Design and Implementation of Overfire Air for NOx Control in Coal-Fired Boilers, with Reaction Engineering International, presented at Pittsburgh Coal Conference, September 23-27, 2002.
Evaluation of Two NOx Reduction Technologies in Utility Boilers using CFD Modeling, with Reaction Engineering and American Electric power, presented at the 2002 Pittsburgh Coal Conference.
A CFD Model Based Evaluation of Cost Effective NOx Reduction Strategies in a Roof-Fired Unit, with Reaction Engineering and American Electric Power, presented at the 2003 International Joint Power Generation Conference.
Pulverizer Operational and Performance Upgrades, an update on market offerings and current practices, contracted by Electric Power Research Institute (document ID 1012633), December, 2006.
Less Than Optimal Made Easy, a case study of CR to MPS pulverizer conversions and subsequent improvements, presented at the 2008 American Electric Power Boiler Reliability and Operations Conference.
Review of Your Pulverized Coal Supply and Combustion System for Potential Improvements, presented at the Western Fuels Conference, August 2009.
CFD-Based Combustion Modifications in China Achieve Significant NOx Reductions in Utility PC Boilers, with Reaction Engineering and LP Amina, presented at the 2011 Power-Gen Asia and the 2011 Clearwater Coal Conference.
Installation of CFD-Based Combustion Modifications Achieve Significant NOx Reductions in Wall and T-Fired Coal Boilers, with Reaction Engineering and LP Amina, presented at the 2011 Power-Gen Asia.
Low Load Operation at the Killen Generating Station, with Dayton Power & Light, presented at 2013 AES International Congress.
Harvesting "Low Lying Fruit": Enhancing Pulverizer & Unit Performance, low cost pulverizer adjustments to achieve significant performance improvements.
B.S. Mechanical Engineering and B.S. Life Sciences, Massachusetts Institute of Technology, 1981.
Earned Professional Engineer's License for the State of Ohio, 1988. Also hold PE license in States of Indiana and Kentucky.
Completed Ohio State University/American Electric Power Management Training Courses, 1996.