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University
of Maryland campus
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The campus, just outside of Washington, D.C. and home to over
35,000 students, selected Trigen and its electric partner Cinergy
(Trigen-Cinergy
Solutions), to employ their thermal sciences and electric distribution
expertise to provide all utility services to the campus – heating,
cooling, electricity, distribution of each, and fuel procurement.
In addition to the $56 million worth of new utility infrastructure,
the University of Maryland, College Park will also save $120
million over the life of the 20-year contract.
Trigen-Cinergy Solutions is constructing a 26 megawatt combines
heat and power (CHP) plant that will provide the campus its base
load electric needs as well as use of the heat from the production
of the electricity to heat and cool the campus’ buildings.
The Trigen-Cinergy Solutions solution will achieve in excess of
75% efficiency, more than double the national average for utility
electric generation. In the process, the CHP plant will reduce
the regional emissions of nitrogen oxide by 9,800 tons per year.
As part of this massive program, Trigen-Cinergy Solutions has engaged
Syska & Hennessy for the design and engineering for the Chemistry
SCUB CHW plant and the interconnection to 22 campus buildings.
The new Chilled Water Production Unit will be know as Chemistry
SCUB and will include 6,400 tons of new chiller capacity at 39°F
supply temperature. The new chiller capacity in the Chemistry SCUB
will be two 1,900-ton steam turbine centrifugal units and one 2,600-ton
electric centrifugal units. In addition to the new chiller capacity,
4,150 tons of existing on site chillers will be connected to the
new chilled water loop, which uses a variable-flow primary pumping
configuration to deliver the CHW to the buildings. Syska also provide
the conceptual engineering for both a direct interconnect of the
SCUB chilled water plant to the building CHW system, as well as
for a concept using plate heat exchangers that would serve as a
thermal and hydraulic interface between SCUB and building CHW systems.
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