Cohousing-L Mailing List: Re: Common house heating

[dghungerford (dghungerford]

I was also curious about the LPG price, which Ian H. gave in Kwh.  Ian, 
is that a conversion?  And what method did you use to convert?  The 
reason I ask is that if it was a BTU or joule conversion factor (that is, 
you converted ccf, therms, gallons, or lbs of pressure to a universal 
energy unit) then converted that to Kwh, the assumption of conversion 
efficiency, and conversion technology, becomes important--certainly 
important enough to question the slight price difference per unit you 
indicate. A valid comparison would be:  how many BTU's of heat would I 
get from a particular kind of system (by the way, radiant systems can be 
installed under wood or tile floors in pier and beam construction, or if 
the room is small enough, in baseboard systems) per dollar amount spent 
compared with how many BTU's/dollar from an electric resistance radiant 
system. 

David Hungerford
Muir Commons