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1. Our Net-Zero Home
2. Considering a solar electric system?
3. New Technologies in Solar Electric
Welcome to Our Home!David & Jeanne Rouse
Photo: Sara C. Tobias/The Sentinel
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See for yourself!Visit our home during the
Green Energy Ohio Tour
Sign-up at:
http://www.greenenergyohio.org
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Why did we build it?•
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A heirloom family home!
An investment!
Reduce dependence on ___________
Challenge to build a livable net-zero home
An environmental statement
To stop pollution (fracking, carbon, …)
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Design ApproachStart with a Passive Solar Home
Energy efficient structureEnergy managementEnergy storageSustainable heat sourcePassive solar gain
Add Solar Electric (to reduce bill, grid independence …)Power needsElectric usage analysisArray/inverter sizing
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1: Chiras, Daniel D. , Chelsea Green Publishing, White River Junction Vermont, Oct. 20022: Skinner, Tina, , Schiffer Publishing Ltd., 20063: New Society Publishers, May 2007
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The solar house passive heating and cooling,
Artisan Crafted Timber Frame HomesPhotovoltaics Design and Installation Manual,
How to build a totally renewable energy home!
A unique home in Licking county!
1. Maximum Insulation
2. Utilize Passive Solar
3. Rely on Bio-Mass Heating
4. Solar Electric for the rest
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1. Maximum InsulationHigh R-Value
Type of insulationSeparate structure from insulation layer
Window selection
Insulate everywhere
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2. Passive Solar
Solar energy to warm roomNatural lightingSun heats thermal mass in winterAwnings panels shade in summer
View is important
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Bio-Mass Heating
Masonry heater heats houseNatural stone provides thermal mass heat source“Pizza” oven Attractive centerpiece of living room
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Video Clip: John Rouse
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Taken July. 1, 2015
~ 9KW solar panels
Awnings use of solar panels
Winter and summer orientation of solar panels
Emergency service (battery back-up)
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4. Solar Electric
More details on each area
1.Maximum Insulation
2.Utilize Passive Solar
3.Rely on Bio-Mass Heating
4.Solar Electric for the rest
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1. Maximum InsulationHigh R-Value SIP PanelsTemperature independent Timber Frame
Internal structureSequesters carbonLooks beautiful too!
Casement windows> 2” foam in basementMinimum shell penetrationERV for fresh air management
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Thermal ModelAmount of insulationType and number of windowsWindow frame structureAir infiltrationWindow insulators (shades, curtains…)Seasonal (monthly) solar gainAmount of thermal massElectric usageOccupants
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2. Passive Solar
Window ShadesControl LightInsulate at nightInsulate large windows
Four types of glassDual clearLow ESmart SunTM
Passive SunTM
Sun heats thermal mass in winterAwnings panels shade in summer
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Glass Selection
North: Insulate with Low-E
East and West: Block summer morning and evening heat with Smart SunTM
South living area: Allow solar gain and block UV with Passive SunTM.South basement: Maximize solar gain with dual clear glass.
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Passive Solar Gain
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Basement levelWindows for solar gainDual pane clear glassInsulated concrete floorWindows for plantsNight window insulation
Main LevelView importantSmart sun glassSolar shades
Upper levelThermal gain UV controlPassive sun glass
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3.
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Bio-Mass Heating
Masonry heater heats houseHeats thermal massUsing 1 cu. ft. woodLasts 12 hrs.
94% efficientNatural stone provides attractive heat storage“Pizza” oven
Great for cooking Secondary combustion chamber
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Biomass Heating SystemTemp-Cast
safe (enjoyable) to touch
Temp-Cast
Temp-Cast
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The masonry heater is the heart of our Biomass heating system. There is no safer wood burning heater. After the brief fire all surfaces are . Because of its high (94%) combustion efficiency it not only qualifies as a Biomass heater but also ensures that there is virtually no threat from chimney fires.
The unit is wrapped with Indiana limestone (~70,000lbs.) to store the energy created by a high temperature fire from 1 cu. ft. of wood. The heat (~200,000 BTU) is slowly released throughout the day.
Masonry heaters have evolved over the past 300 years in places like Russia, Finland and Sweden. For these northern people effective wood heating was absolutely necessary to survive.
is based upon the same design and is manufactured just across the Canadian Niagara Falls border and is distributed through North America.
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~40 lbs. wood
Burns at ~1200 F
1 hr. burnTime laps
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Video Clip: Seth Rouse
Outside temperature first year.
-24 Degrees outside
67 Degrees inside
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4. Solar Electric
Dual use of solar panels
Winter and Summer orientation5 KW summer 27 degree roof pitch
4 KW winter 45 degree for snow shed
Dual mode of operationSustainable service
Power when the grid is out
Emergency service (battery back-up)Power when the grid is out
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Uninterrupted system realization
The Grid
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Solar panels Solar panel controller
Batteries
Inverter
Network interface
House electricpanel
Critical power panel
Sustainablepower panel
HOUSe
Blue – W/O PV
Red – Uninterruptable PVGreen – Grid tied PV
Usage Meter
Making it happen
Brandon KinnardKinnard Construction
Richard DownsSunrise Solar
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Accumulative Electric View
KWhr
/mth
2014 2015 2016
Used
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Yearly Electric Usage
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One More Limit Panel
April May June July Aug. Sept. Oct. Nov. Dec. Jan. Feb. March
Meter Reading in KWhr
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Predicted
AC Produced
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Generated, used and predicted by month
2015 2016
Real-time power plot!
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Why add batteries?
Power when grid is downSun shining
No sunshine
Manage utility charging structuresSelf consumption (price differential)
Peak charging premiums
Time of day charging premiums
Network overload conditions
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Our Energy Usage Classification
Critical ServicesWeather radio
Night/Critical Lights
Refrigerator
Internet access
Critical outlets
Sustainable livingWell pump
Hot water
ERV and Air circulation
Microwave/stove top
Laptop/phone charging
Washing machine
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Normal ServiceClothes DryerDishwasherAccent lightingFlood lightsSink waste disposalHeat pumpPrinter/scannerEntertainment centerOvenCordless phoneToolsEverything elseRemaining outlets
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Electronics
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“The question”?What is the “payoff period”?
Is this a meaningful question?
What is the value of clean air and water?
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System cost is less than 5% of house cost.
Increased resale value of no utility bills?
What is the payoff of our window awnings?
What is the payoff of our fireplace?
What if we used stone in front of house?
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The real reason we are doing this!
And for all generations!Ella Marie Addie
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