CLEAN ENERGY RESOURCE TEAMS

CLEAN ENERGY RESOURCE TEAMS

Alternative Alternative Energy Basics Energy Basics ––Solar, Geothermal Solar, Geothermal and Biomassand Biomass

Joel Haskard, Joel Haskard, UM Regional Sustainable UM Regional Sustainable Development Partnerships Development Partnerships CERTsCERTs Assistant CoordinatorAssistant Coordinator

February 28, 2006February 28, 2006

Helping Communities Develop their Energy Future

CERTs gives citizens a voice in energy planning by connecting them with the technical resourcesnecessary to develop regional strategic energy plans and to identify and implement community-scale energy efficiency and renewable energy projects.


CERTs MAP


Solar


• Photovoltaic (PV) systems including shingles, roof tiles, building facades, or skylight glazing

• Solar thermal systems• Passive solar design

Photos from Lissa Pawlisch @ Hop Shop/The Water Foundation near Brainerd, MN

Minnesota Solar Resource Map


Solar Projects


• 89 installation part of Solar Rebate Program

• 55 NOT part of rebate including solar hot water & off-grid PV

• Many more off-grid, niche applications we don’t know about

Photos from Alan Stankevitz and City of Duluth, data from Mike Taylor @ MN DOC, 2 005

Solar Thermal


• Heating alternative/ supplement as it concentrates direct heat from sun to produce heat at useful temperatures

• Can offset ~40% of heating needs, ~70% of hot water needs

• Costs vary on system size, new or used, & labor

Photos from Jason Edens with RREAL. Data from Mike Taylor @ MN DOC, 2 005

Ground Source Heat Pumps


• a.k.a: geothermal, geoexchange

• Basic concept is to MOVE heat

• Many varieties, most commonly in closed loop systems– Vertical– Horizontal (slinky)

Photos from Econar and diagrams from Northern Minnesota Renewables website, www.nmnrenewables.org



Air Distribution System Geothermal Loop Field

Geothermal Heat Pump

Removing Heat from the Earth

Warm AirIntensify

Heat

Water to RefrigerantHeat Exchanger

Refrigerant to Air Heat Exchanger

Diagram provided by Econar.



• Each hole or section of slinky provides roughly 1 TON of HEAT or 12,000 BTUs – Note: a typical house

uses 5-14 tons

• Costs: typical system btw. $5000 and $20,000– Vertical = $900-

$1200/ton (not including exchanger)

– Horizontal (slinky) = $550/ton with excavation (not including exchanger)

Photo provided by Econar.

Biomass


Sources of biomass include:• wood residues• agricultural residues• energy crops• animal waste• sewage sludge• soybean oil (biodiesel)• some sources also list Municipal

Solid Waste and Landfill gas

Corn Stoves


Schools & home owners are looking into corn stoves because:

• Renewable resource• Readily available• Low cost

Photo provided by Staples High School Marketing Class; Year-A-Round.com; photo from www.magnumheat.com .

Questions?


For more information please see:WWW.CLEANENERGYRESOURCETEAMS.ORG

Joel [email protected]

(612)625-8759

Lissa Pawlisch [email protected]

(612)624-2293

Documents

CLEAN ENERGY RESOURCE TEAMS