'Log homes properly built have a huge amount of thermal mass and act as a good insulator besides. Fill it up with hot or cool air and allow the temp to stabilize and you have tremendous storage capacity.'
Log homes are not prone to having 'huge' amounts of thermal mass. The reason the temperature stabilises is the properties of the wood are stopping heat leaving or entering, acting as a good insulator.
Concrete, stone or water are very good mediums for retaining heat within this context.
The concept in hand here is passively heated retro fitting technologies. Full blown passively heated homes have tonnes of thermal mass and can achieve average temperatures of 20 deg C all year round. But require a larger degree of forethought on the planning side.
To any one reading this, build a solar thermal panel, a well built one will save you thousands of kWh's a year in heating!
Regards
Jon M
www.otherpower.co.uk
"I am certainly not a perfectionist, the thing is to know where you can take short c
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