Description:
Discussions of practical solar thermal energy use.
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Global warming due to asphalt?
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Has anyone done the calculation of the contribution that asphalt and concrete surfaces make to global warming? I visited relatives that live on the other side of a hill from the "city" and it is about 10 degrees cooler there. I frequently hear weather reports that speak of temperatures being higher in cities.... more »
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Wind power ?
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Wind Energy Reasonable Power Wind Energy Reasonable Power About wind powered generators: YOU SHOULD KNOW THIS ! ------------------------------ ------------------------------ -------------------- Calculations and Considerations (from a wind energy study): The following is my own personal opinion. Check out the facts for yourself. I give direct references.... more »
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Question about heat storage
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A solar closet is generally a south facing water filled Drumwall disposed in a super insulated box. Is there any exemple of a similar solar heat storage that runs from south to north of a building ceiling (like a duct) ? I guess one would use a Cansolair-like solar heater to recharge the "storage duct" during the day and discharge it with a fan... more »
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Massy floors for solar heat storage
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don wrote: ...I'd call that a heat store. To me, heat sinks just dissipate heat from transistors and other things. ...That depends on how fast you need to withdraw the heat, which increases with the house thermal conductance and indoor-outdoor temperature difference. ...Dry soil has about 30 Btu/F-ft^3 of thermal capacitance and about... more »
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