solar energy at gustavus review of projects underway

Solar Energy at Gustavus

Review of projects underway

Johnson Center for Environmental Innovation

Focal point for campus environmental initiativesSustainabilityAmerican College and University Presidents’ Climate CommitmentEnergy conservation and renewable energy

Collaboration across the campusEnvironmental Studies ProgramPhysics DepartmentPhysical Plant Director, Warren Wunderlich

Background

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Twelve year effort to acquire a utility scale wind turbineCarbon reduction and economic benefitBlocked by county action in 2012$1 million dollar donorPresident asked donor to shift funds to solar projectPart of LEED certification effort on new academic building (Beck Hall)

Beck Hall

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New (2011) academic classroom and office buildingTargeting LEED PlatinumEcon and Management, Communication Studies, Psychology, Neuroscience, History, Sociology, and Antrhopology

LEED on-site renewable energy60 flat plate solar thermal collectors40 KW solar electric

Exploratory specification process

Overview of all projectsBeck Hall

60 flat plate solar thermal collectorsSummer reheat and winter heating load

40 KW solar electric (in process)Olin Hall (Math and Physics)

Three 5 KW arrays (5 KW installed to date)TenK, microinverters, central inverter

Lund athletic complex24 flat plate collectorsYear round load—pool and water heating

Jackson Campus CenterSixteen Next Generation NGU-TU panelsBallast mountsYear round water heating load

Olin Hall

Jackson Campus Center

True south orientation

Fin tube radiator heat dump

Jackson Campus Center

Lund Athletic CenterCollector orientation about 30 degrees west of south

Priority to pool load

Performance data

Jackson 20 days

4.98 therms/day production

6.22 therms/day displaced

Lund 9 days

DHW 4.11 therms/day

Pool 3.99 therms/day

Total 8.10 therms/day

Total displaced 10 therms/day