General Case Study Information

• Overviewof Case Studies

Dr. Lisa Gartland, PositivEnergy
Highlights from the Cool $ense collection of case studies, with examplesof the best chiller replacement, load reduction and system improvementprojects, and illustrating the financial benefits of an integrated chillerretrofit.
• IntegratedRetrofits for Federal Projects

Dr. Lisa Gartland, PositivEnergy
An overview of collected federal integrated chiller retrofit projects, showing how the extra challenges of working in the federal system can beovercome.
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• CNN Center

John Hester, Turner Properties
Expansion of the CNN Center necessitated a substantial upgrade to the building's cooling systems. Adding a gas chiller and repiping the systemmade it more flexible and efficient.
• Georgia Tech'sSustainable Education Building

Georgia Tech's School of Civil and Environmental Engineering
A sophisticated heating, ventilation, and air conditioning system thatprovides energy efficiency and state-of-the-art control is serving as partof a full-scale, working model of sustainable design for engineering studentsat the Georgia Institute of Technology.
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• CharlesF. Hurley Building

BJ Mohammadipour, Bureau of Massachusetts State Office Buildings
The Hurley Building replaced its steam-powered absorption cooling plantwith a gas-fired chiller/heater. They also eliminated steam use for theirhot water heater, tied the computer room cooling system into the chiller/heatersystem, added an EMS, and made significant lighting improvements.
• FederalReserve Bank of Boston

John Yahoodik, Federal Reserve Bank of Boston; Rick Dorricott, EnergyInvestment, Inc.
The Federal Reserve Bank of Boston replaced its R-500 and R-22 chillerswith R-134a chillers, made numerous HVAC system improvements, and improvedtheir lighting.
• Rhode IslandHospital Trust Building

John Sanders, Rhode Island Hospital Trust; David Leach, NEES ChillerInitiative Strategy
The Rhode Island Hospital Trust Building replaced their R-11 centrifugalchiller with high efficiency brine chillers and an ice storage system.They also installed high efficiency motors, variable speed drives, newlighting and an EMS.
• WorcesterPolytechnic Institute

Robert Kennedy, CES/Way
Two buildings at WPI, Gordon Library and Fuller Laboratory, replacedan R-12 centrifugal chiller with an R-22 screw chiller, added a coolingtower and heat exchanger system for free winter cooling, improved lightingsystems, and made various HVAC system improvements.
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• AurariaHigher Education Center

John Ismert & Frank Ellis, Auraria Higher Education Center, FacilitiesManagement
The Auraria campus replaced two R-12 centrifugal electric chillerswith two same-size R-134a centrifugal chillers, added direct digital controlsto seven buildings, made air side and lighting improvements and improvementto fume hoods in laboratories.
• DenverPlace

Matt Urquhart, Amerimar Realty Management Company; Jack Wolpert, E-Cube,Inc.
This retrofit project introduced plate and frame heat exchangers toa hybrid heating system, eliminated half of the building's baseboard electricheaters, upgraded lighting, installed a new energy management system andreplaced a snow melt garage ramp heater system.
• LawrenceStreet Center

Craig Griffiths, Merrill Lynch
An oversized 15 year old electric chiller using R-11 refrigerant wasgiven a driveline retrofit and upgraded to use R-123.
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• Kansas CityInternational Airport

Michael Glasker, P.E., George Butler and Associates, Inc.
This airport needed to upgrade its cooling system to make way for futureexpansion. A very flexible and efficient cooling system was devised byreplacing two large R-12 chillers with three smaller R-134a chillers.
• New YorkLife Building

Mike Thome, Hoss & Brown
This historic high-rise was extensively remodeled to meet today's buildingcodes. Its energy systems are state-of-the-art, including an ice storagesystem, high efficiency electric chillers, computer controlled daylighting/lightingsystems, and low-e windows.
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• Green BuildingDemonstration Project

Adam Saling, City of San Diego
This project replaced water source heat pumps with highly efficientmodels, replaced cooling towers, added energy efficient lighting and windowfilms, and installed a comprehensive occupancy sensor and energy controland management system. This project also used recycled materials whereverpossible to and still met stringent energy, environmental and financialobjectives.
• LindberghField International Airport

Bill Mahoney, LSW Engineers
A new cooling plant is constructed to meet loads for this expandingairport facility. This plant provides an extremely flexible system to meetloads efficiently. The new terminal is designed to reduce cooling loadsusing low-e windows, daylighting and carbon monoxide monitoring.
• UCSD MedicalCenter

Gerry White, Facilities Design & Construction, UCSD, San Diego
Replacement of two R-11 chillers with R-123 chillers and upgraded oldboilers. Made extensive air distribution changes and lighting improvementsand reactivated an unused thermal energy storage system.
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• FoothillCollege Space Science Center

Bill Kelly, Viron Energy Services
New cooling plant added to campus with a chilled water loop to serveall campus buildings. Lighting systems and HVAC delivery systems upgradedin each building.
• LawrenceLivermore National Laboratory Building 111

Mike Holda, Lawrence Berkeley National Laboratory
Two 23 year old chillers were replaced with new chillers, a variableair volume & variable frequency drives were added to the air system,and lighting was replaced throughout the building.
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• MarriottCorporate Headquarters

John Henderson, Marriott Corporation
A variety of load reductions, cooling system improvements and chiller replacements resulted in an innovative and flexible cooling system, andsaved MWh or electricity annually.
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