E3 House Design Project for Flagstaff, Arizona

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E/3 House Design Projectfor Flagstaff, Arizona

• Jeremy Suel
• MEE 420

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Passive Solar Theme
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Passive Solar Theme
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Using the Ground
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Walls

• Wood Framing
• Cellulose Insulation
• 2x10 Studs 20 apart
• Polyisocyanurate Exterior Insulation
• Vapor Barrier
• Total R-value 32.29

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Windows

• Pella Designer Series Clad Casement Windows
• Low-E Glass
• 30x60 frame
• R-value 4.76
• Emissivity 0.55

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Roof and Ceiling

• 2x4 joist 16 apart
• 8 of Cellulose Insulation
• Total R-value 28.56

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Doors

• Steel Doors
• Polyisocyanurate Core
• Total R-value 12.11

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House on Slab

• 8 Concrete slab stores energy from solar gain
  through the windows
• Floor temperature stays above ground temperature

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Heating and Cooling

• Condensing Furnace 95 efficiency
• 30,000 to 50,000 Btu/hr
• Solar gain to high for evaporative cooling
• SEER 14 A/C
• 2 to 3 tons

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Esim Results

• Natural Gas Consumption
• 34.7 Mbtu/yr or 347 ccf/yr
• 18 of the Gas used in the Code House
• Electric Consumption
• 5,887 kWh/yr / 1,084 kWh/yr for A/C
• 97 of the Electricity used in the Code House
• Due to Large Solar Gain

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Passive Solar Sim

• Summer
• Average Ti was 9 degrees higher
• Peak High Temp was only 3 to 4 degrees higher
• Winter
• Average Ti was 9 degrees higher
• Peak Low Temp was 15 to 20 degrees higher

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Photovoltaic

• Added PV to South Roof
• Able to produce most of the houses electricity
• Makes up for the large cooling load

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Conclusions

• House very effective for cold climates
• Solar gain needs reduced in the summer
• Exterior Blinds?
• House would be comfortable in summer and winter