Green Jobs/Green New York: Increasing Opportunities for Home Energy Efficiency Upgrades
Green Energy Upgrades
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Transcript of Green Energy Upgrades
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Green Energy Upgrades7-9pm Feb 25, 2009
www.grotonlocal.org
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Green Energy Upgrades:Improvements to your heating systems based on
Systems Design and Planning.
Why do them?
1. Save the Planet
2. Save Money
.Intermission
Whats involved and How are they done?
3. Solar, Geothermal Heat Pumps, Wood Pellets
4. Collaborative Project Planning
Workshop for Groton households.
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Save the Planet
NOW!
Its much later than we think. Atmospheric CO2 = 387 PPM Recent activity indicates scientists underestimated impacts.
Permafrost emissions, glacial melting, deforestation, changingprecipitation patterns
HOW?
Conserve in all areas that cause Green House Gases (GHG).
Influence the process with votes and purchases.
Create a Plan for your home then Act on it. Replace Addictive and Harmful fossil fuels.
Invest soon so you can make money in the long run.
Must have 80% cuts in Global CO2 emissions before 2050.
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150 yrs of Fossil Fuel usePre-Industrial
Glacial
350 PPM target
387 PPM in 2008
1. Save the Planet ( CO2 PPM )
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Climate Change, CO2 PPM
1. Save the Planet (150+ years of Fossil Fuels)
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1. Save the Planet (7-3=4)
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5 Stages of Climate Grief
1. DENIAL. We do not believe the science or thathumans are the cause of global warming.
3. ANGER We refuse to consider any substantialchanges to our life style.
5. BARGAINING We rationalize that warming wont be allthat bad and might even make life more comfortable.
7. DEPRESSION We consider the risks, impacts and tasksahead and the need for international cooperation to solve theproblem and conclude that success is impossible.
9. ACCEPTANCE We acknowledge the scientific factscalmly, and explore solutions to drive down greenhouse gasemissions dramatically, and commit to use non-carbonintensive energy sources.
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Denial Anger Bargaining Depression Acceptance
Question: Which house do you live in?
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Climate Change, CO2 PPM
Major Global Initiatives Developed Countries need to lead the way.
Huge investment in new technologies and programs.
Replace Coal.
Global Carbon Cap-N-Trade and/or Taxes.
U.S. must catch up and assume a leadership role.
Green Energy Upgrades Building Upgrades in the North must cut way back on Oil and
Gas. Utilize currently available low-carbon products and services.
Re-educate, reduce, reuse, recycle, re-localize!
Save the Planet: PARALLEL EFFORTS NEEDED NOW
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Major Global Initiatives needed to solve global
energy and environmental challenges.
Fossil Fuels
conventional oil & gas not enough resources?
coal, tar sands, oil shale not enough atmosphere?
Sustainable Fuels
biomass not enough land?
wind & hydro not enough good sites?
photovoltaics too expensive?
nuclear fission too unforgiving? not enough Uranium?
nuclear fusion too difficult?
hydrogen energy to make it?, means to store it?
end-use efficiency not enough smart end users?
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Critical Timing of Upgrades and Major Global Initiatives
Upgrades
Major Global Initiatives
350
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Hot, Flat and Crowded, Tom Friedman
The Weather Makers, Tim Flannery
Deep Economy, Bill McKibben
Boiling Point, Ross Gelbspan
Plan B 3.0, Lester Brown
An Inconvenient Truth, Al Gore
Earth: The Sequel, Fred Krupp / Miriam Horn
Randys reading list on Climate Change
and Sustainable Strategies
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Garbage
0%Electricity
20%
Natural gas
0%
Propane
0%
Heating oil47%
Car 1 distance
14%
Car 2 distance
9%
Air miles10%
Dont ignore
the costliest
and biggestemitter
4. Collaborative Project PlanningHousehold Energy and Emissions.
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.
Avg
10%
Oil Price Volatility and Trend Upward
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2008-2009 Home Heating Estimates
(100M BTU house in Groton, MA)
$0
$500
$1,000
$1,500$2,000
$2,500
$3,000
$3,500
$4,000
$4,500
OilHydronic
OilStea
m
ElectResistance
Propane
NaturalG
as
HeatPumpAir2Air
WoodPellets
Geo-ClosedLoop
Geo-OpenLoop
Cost Savings compared to Oil
Saving Money: Comparing First Year Fuel Costs
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Internal Rate of Return (%)vs Payback (Years)
Net Savings
withescalating
Fuel prices
Years after Initial Cost
0
+
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Saving Money: 2 ways to evaluate cost benefits
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Intermission
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Solar Thermal: Vertical Air Collectors on South Wall
3. Solar, Geothermal Heat Pumps, Wood Pellets
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2. Efficiency, IRR and BTU/$ . Save Money
SolarPathfinder-South?-Obstructions?
-Software calculates net insolation.
3. Solar, Geothermal Heat Pumps, Wood Pellets
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Initial estimate of monthly Solar contribution.
Insolation (50% eff, with Albedo, 90 degree slope)vs Total House Load
0
2,000,000
4,000,000
6,000,000
8,000,00010,000,000
12,000,000
14,000,000
Sep Oct Nov Dec Jan Feb Mar Apr May
BTU Insolation
BTU Load
2. Efficiency, IRR and BTU/$ . Save Money3. Solar, Geothermal Heat Pumps, Wood Pellets
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3. Solar, Geothermal Heat Pumps, Wood Pellets
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10% Bleed to Dry Well
90% Returns to Well
Geothermal Open Loop Design (Standing Column Well)
Great solution for homes that need heating, AC and domestic hot water
3. Solar, Geothermal Heat Pumps, Wood Pellets
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Heating Flow Chart
Earth Coupling
Ground Water
Heat Pump
Refrigerant
Distribution
Hydronic Fluid/Air
Expanded/Compressed
Gas/liquid cycling
45
3895/65
115/80
13525
3. Solar, Geothermal Heat Pumps, Wood Pellets
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Dual Fuel Design
using
Oil as back-up.
Acc.Tank
34,000 BTU/hr
Fan coil
To Ducts
Heat
Pump
3-way valve
80000 BTUBoiler
Standing
Column Well
20gpm ,
pump @ 300
26,000 BTU / hr3 zones / baseboards
geo oil
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On-line Wood pellet boiler cost estimator.
2. Efficiency, IRR and BTU/$ . Save Money3. Solar, Geothermal Heat Pumps, Wood Pellets
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Quick Fixes help but they are not enough. Weather-strip and caulk windows, doors and outlets.
Tune-Up and Clean the Heating system(s).
Add insulation.
Improve Window Coverings
Reduce heat to unused spaces
Modest Life style changes
Bottom line: $500 to $5000
Can reduce Heating Bills by 20%
Payback (0 - 5 yrs).
Limited planning. Assumes continued primary use of oil or gas.
Piecemeal approach. Low hanging fruit.
4. Collaborative Project Planning(Comparing Quick Fixes to Green Energy Upgrades)
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Green Energy UpgradesAvoid 20 more years
Of Fossil Fuels
Save $50,000 to $200,000
Bottom line: $5000 to $50,000
Can reduce Energy Bills by 50% to 70%
Involves sustainable mix of fuels and much more efficient systems.
Looks at the overall system (enclosure, heating system, dhw, AC, health)
Require more planning and investment.
Payback < 10 yrs. IRR > 10% over life of systems.
4. Collaborative Project Planning(Comparing Quick Fixes to Green Energy Upgrades)
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4. Collaborative Project Planning
Step #1.Homeowner Review and Preparation
Collect utility bills for oil, gas and electricity.
Find or create plot plan. (property lines, house location andwetlands).
Step #2. Site Survey, Analysis and Report
Perform Enclosure, Site, Heating Systems and Solar Surveys.
Provide preliminary estimates and assess feasibility ofsustainable systems (solar, geothermal, conservation and wood
pellets for space heating and supplemental domestic hot water). Costs $150 for Groton Local and NRWA members.
Can be used as a basis for obtaining competitive, budgetaryquotes. Refundable in Step #3.
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4. Collaborative Project Planning
Step #3. Project Design and Cost Estimates Define space, power, access and site work for Heating, Cooling
and DHW with or w/o Solar thermal.
Estimate Initial costs, paybacks, IRR, Incentives and Rebates
associated with 50% or greater reduction in operating costs andemissions.
Draft Design/Build contract for best alternative.
Costs $500 for Groton Local and NRWA members.
Can be used as a basis for obtaining competitive, firm estimates.Refundable in Step #4.
Step #4. Contract Award for Installation and Support
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Workshop
gallons 925
yearly load 100,122,000
Fuel Yrly Fuel Costs unit cost Eff %
Oil Hydronic $2,035.00 $2.200 82%
Oil Steam $3,337.40 $2.200 50%
Elect Resistance $3,852.13 $0.130 99%
Propane $3,692.71 $2.900 86%Natural Gas $2,614.30 $2.350 90%
Heat Pump Air2Air $2,325.37 $0.130 200%
Wood Pellets $2,098.14 $0.143 85%
Geo - Closed Loop $1,367.87 $0.130 340%
Geo - Open Loop $949.13 $0.130 490%
Variable
Item Quantity Units CO2 lbsper year
Garbage 32 gal/week 3,328
Electricity 7,500 kWh/year 10,275
Natural gas 0 therms/year 0
Propane 0 gal/year 0
Heating oil 550 gal/year 12,315
Car 1 distance 10,000 miles/year 6,667
Car 2 distance 5,000 miles/year 4,000Air miles 0 miles/year 0
Occupants 2 people
Total 36,584
Spreadsheets to calculate your
Carbon Footprint Energy Cost Savings