A New Language Shining the Light on Passive Solar Features and Retrofit Possibilities.

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Presentation transcript:

A New Language Shining the Light on Passive Solar Features and Retrofit Possibilities

What does a Passive Solar House Look Like?

Photo from

Photo from

Principles of Passive Solar Heating and Cooling The Solar House; Passive Heating and Cooling by Daniel D. Chiras

1. Site with good solar exposure. 2. Orient the east-west axis of the home within 10 – 15 degrees of true south. 3. Concentrate windows on the south side, go for well made, low U values & low infiltration. 4. Minimize windows on the north, east, and west sides.

Orientation – 15° West of due South S S

Demonstration of “Passive Solar” Concept – Sun Angles, Etc.

House is oriented on east-west axis – passive solar heat gain 24 Inch Overhangs Protection from Summer Sun – passive cooling Deciduous Trees Shade and Cool the House – also passive cooling

Triple-Pane Glasse Low-e Coatinge

5. Provide overhangs and shade to regulate solar gain. 6. Insulate ceilings, walls, floors, and foundations. 7. Provide the appropriate amount of thermal mass. 8. Protect insulation from moisture.

8” SIPs, R-32 12” SIPs, R-48 6” SIPs, R-2411” ICFs, R-22

4 inch thick concrete slab with bluestone on top in LR & DR areas, retain solar gain

Temperatures of Floor from Passive Solar Gain (heating) Sunday, February 10, ° 74° 77.5° 80° 76.5°

Programmable Thermostats

WINDOWS AND DOORS: MAIN FLOOR - SOUTH SIDE WINDOWS AND SLIDING GLASS DOORS ARE TRIPLE PANE, WITH DOUBLE CELL, CELLULAR BLINDS AS WINDOW TREATMENTS.

9. Design house so that rooms are heated directly and for optimal natural heat distribution. 10. Create sun free zones for computer work and viewing television. 11. Seal leaks and cracks but ensure adequate fresh air ventilation.

12. Provide efficient, properly sized, environmentally responsible, back-up heating and cooling systems. 13. Protect home from winter winds with landscaping or earth sheltering. 14. Design interior space to correspond with solar gain and living patterns. The Solar House Book by Daniel D. Chiras

GeoExchange Heating and Cooling 3 Ton Water Furnace Ground Source Heat Pump (Dual Stage Compressor) Water to Air System Desuperheater – Excess heat from air conditioning mode is extracted and sent to water heater

“Speak a new language so that the world will be a new world.” Rumi, 13 th Century Philosopher