Efficient Heating and Cooling

Minimize non-renewable energy use across the seasons

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SUMMER

Unusually Extreme Summer Days (very hot, or hot and humid)

  • High-efficiency Ground Source Heat Exchange cools radiant floor, and cools rooms with southern exposures via air handlers. Irrigation water provides nightly cooling of ground loop used by heat exchanger.
  • Solar Heating of domestic hot water.

 Regular Summer

 

FALL/WINTER/SPRING

 larger seasonal heating graph

 

Fall and Spring  

  • Solar Heating provides lukewarm water to radiant floors in house during evenings and nights.
  • Solar Heating of domestic hot water.

Regular Winter     Febrarury 2009: PRELIMINARY DATA (BOILER ONLY)

  • Solar Heating provides lukewarm water to radiant floors in house some of daytime, heat to slab rest of time
  • Ground source heat pump provides lukewarm water to radiant floors making up for shortcomings of solar collectors.
  • Domestic hot water heated by boiler, condensing heat used to raise slab temperatures.

Unusual Extreme Winter (freezing)

  • Solar Heating provides lukewarm water to raise slab temperature
  • Boiler heats the radiant floors
  • Boiler used to heat water for domestic hot water, and to supply air handlers to heat room air if radiant floors approach their temperature limits.