Page 25 - Barr&Barr_Trinitas RFQ No. CHP-2010_Flipbook

Homewood Campus Combined Heat and Power Plant

John Hopkins University– Baltimore, MD

References: EPC Contractor’s Role:
David Ashwood, Director of Plant Operations Th e design included a 8,150 square foot addition to the
Johns Hopkins University existing power plant to house the new CHP system. Since the
P: (410) 516-8060 existing power plant is centrally located on the University’s
E: dashwood@jhu.edu campus, the design for the addition included sound attenuation
strategies to avoid disruption to the campus activities while
Project Description: supporting continuous operation of the CHP system. Th e
Started as design/bid/build and switched to design assist. Funded by design included pre-purchasing of all major equipment for
Johns Hopkins. Th e cogeneration system consists of a nominal 4.6 MW the project, including procurement of the Solar Centaur 50
combustion turbine and a heat recovery steam generator (HRSG). Th is turbine. To fully utilize CHP’s electric and steam output,
CHP is operated as a base load unit generating 4.6 MW of electric modifi cations were made to the campus’ 13.2 kV electric
power at 13.2 kV and 25,000 PPH steam at 125 PSI. Th e steam output distribution system to shift campus electric loads to the
is connected to the existing campus steam distribution system to CHP system. To fully utilize steam loads during summer, a
supplement existing boiler steam generation to serve the campus heating large electric driven condenser water pump used for campus
loads. Th e electric output operates in parallel to the incoming electric cooling was changed over to a steam-driven unit.
utility to reduce overall energy demands from the campus’ electrical
distribution system. Construction Dates:
Professional Services: 06/2008-07/2009
Th e design included a 8,150 square foot addition to the existing power Construction: 10/2010 - 07/2011
plant to house the new CHP system. Since the existing power plant is Date of operation: 07/2011
centrally located on the University’s campus, the design for the addition
included sound attenuation strategies to avoid disruption to the campus Current Operating Status:
activities while supporting continuous operation of the CHP system. Each year AEI provides a detailed review and audit of the
performance of the system. To date the systems have met
Construction Cost: or exceeded operating savings.
$7.4 Million
Description of Claims:
Project Schedule: None
Th is project, successfully completed in June 2011 at a construction cost
of $7.4 million, resulted in operational cost savings of approximately
$1.5 million per year and is reducing greenhouse gas emissions by 9,500
metric tons of carbon dioxide equivalent per year. project was delivered
on time. Client felt that cooperative nature of Cx and start up services
provided eliminated 2 months from the schedule.