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No Furnaces but Heat Aplenty in "Passive Houses" http://apocadocs.com/s.pl?1230407915
...Even on the coldest nights in central Germany, Mr. Kaufmann's new "passive house" and others of this design get all the heat and hot water they need from the amount of energy that would be needed to run a hair dryer...The concept of the passive house, pioneered in this city of 140,000 outside Frankfurt, approaches the challenge from a different angle. Using ultrathick insulation and complex doors and windows, the architect engineers a home encased in an airtight shell, so that barely any heat escapes and barely any cold seeps in. That means a passive house can be warmed not only by the sun, but also by the heat from appliances and even from occupants' bodies.
And in Germany, passive houses cost only about 5 to 7 percent more to build than conventional houses.
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[Read more stories about:
technical cleverness, sustainability, low-energy future, efficiency increase]
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Nora says: "Depends on how aggressive that passive is."
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'Doc Michael says:
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And I used to think "passive" was a bad thing!
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