Engineering consulting services for the design, analysis and testing of reciprocating
internal combustion engines and engine systems.
- office: (858) 456-3511
- fax: (858) 456-3512
News & Events
Vronay Completes Emissions Optimization Testing July 20, 2007
Vronay Engineering Services of La Jolla, California and Malcolm Pirnie of White Plains New York completed an ambitious emissions optimization and compliance test program for the City of New York, Department of Environmental Protection at the North River Water Pollution Control Plant in Harlem.
The specialist mobile testing laboratory, Spectral Insights, LLC of Durham, North Carolina performed the measurement of all criteria pollutants as well as carbon pollutants such as formaldehyde which are currently listed as Hazardous Air Pollutants (HAPS) by the US EPA. Dr. Jeff LaCosse, PhD, President and Principal Scientist of Spectral Insights was responsible for collecting the measurements of all pollutants using Fourier Transfer Infrared (FTIR) spectroscopy in lieu of other measurement methods which have found to offer less accurate results.
The total test program consisted of two-weeks of optimization testing and one-week of compliance assurance testing in which representatives from the New York State Department of Environmental Conservation and the NYC DEP were invited to attend.
The results found all engines were able to comply with NOx RACT standards as required by the facilities operating permit.
Taking a break from the heat of the engine room. The Test Team L-R: Dr. Jeff LaCosse, PhD and Danny Harrison of Spectral Insights LLC, John Vronay, P.E of Vronay Engineering Services, Ms. Deborah Caston, Malcolm Pirnie and Faeeza Khan Vronay, Vronay Engineering Services.
View of testing during optimization phase of one pump-drive engine. Measurement of shaft torque was performed by use of a custom fabricated, multi-element strain gage collar. Special 1% accuracy, temperature compensated volumetric flow meters were used for fuel oil supply and return flows. All measurements were recorded by a high-speed, PC based data acquisition system designed by Vronay Engineering Services.
John Vronay and Kit Liang, Project Manager for Malcolm Pirnie, discuss test. Temperatures in the engine room near the operating engines often exceeded 110 degrees F and 80% RH during the mid-July testing in New York City.
News & Events Archive
- Vronay Engineering Ultra‐Low Emissions System in the Spotlight October 03, 2012
- Vronay Engineering Team Receives New CEC Contract August 14, 2012
- Media Event for California Energy Commission Project Highlights Project Success December 09, 2011
- Vronay / AECOM Present at NYWEA February 04, 2009
- Vronay / GTI Awarded DOE Contract January 01, 2009
- Vronay Awarded California Energy Comission Project November 07, 2008
- Vronay Completes Emissions Optimization Testing July 20, 2007