Studies: Gas Turbines - Duquesne University
Solar® Turbines Gas Turbine Power Plant 1-50 MW
Developer: Duquesne University in Partnership with Equitable Resources Inc.
Location: Pittsburgh, PA.
Installed: November 1997
60 SoLoNOx™ gas turbine generator set manufactured by Solar Turbines
entered service at Duquesne University in Pittsburgh, Pennsylvania in November
1997. The university established a partnership with Equitable Resources Inc. to
refurbish the university’s outdated heating and cooling system, while addressing
was operating an outmoded, decentralized campus cooling system with 30 large mechanical
units used for air conditioning. These units were spread throughout the campus.
The local electric utility supplied the electricity, and electrical centrifugal
chillers located at each of the buildings they served produced chilled water.
Four boilers operated by the university from an on-campus central steam plant
provided steam for heating. The system was inefficient as well as environmentally
One of the
goals of the project was to consolidate the large number of chillers on campus
into one central plant and to increase the capacity to produce electricity and
steam, recovering previously wasted heat and using it to stabilize energy costs.
The solution was the installation of a 5-MW natural gas-fired cogeneration facility,
known as the Duquesne University Energy Center.
has a Taurus 60 SoLoNOx gas turbine generator, which meets about 95%
of the university’s needs. Power is not sold back to the utility, and the
turbine meets local load only.
steam from the Taurus 60 is directed to a steam generator through a diverter valve.
The steam generator has a nominal steam capacity of 23,000 pounds of steam per
hour, 6166 hp (electrical) and 6530 hp (mechanical) to meet the energy demands
of the university.
is now saving about $750,000 annually on its energy costs and was selected to
be part of the federal government’s Energy Star Buildings program.The project
was completed ahead of schedule and on budget.