[Greenbuilding] Passive Solar and HVR/ERV systems

[Lance Collins]

It is possible to get used to warmer bedrooms (but not very pleasant 
initially).   Our city apartment block is built of tilt-up concrete 
and has high thermal mass.   Global warming has brought us the 
warmest summer on record and the temperature in our bedroom has not 
fallen below 24C/75F since Christmas.  I'm quite impressed with to 
ability of the thermal mass to defeat cool night air.

Perhaps one should design a heated slab to have less heat for bedrooms.

If you go for AGS then your house will not have significant diurnal 
temperature swings.

Lance
(in Aus)

At 05:44 PM 27/02/2007, you wrote:

>One big issue, and expense, with a heated slab that it is impractical
>to turn it down when you go to bed, or go to work. I find this --to a
>lesser degree--to be true with my cast iron radiators. It's nice,
>even heat, but it takes at least 3 hours in the winter to get the
>house from 55 to 68. With my former, forced air house, the furnace
>could do it in a half an hour. We'd keep it at 55 at night, and when
>we went out for the day. In our new house, we only turn it down when
>we will be gone for more than a day.
>With a heated slab, it can take days to get up to temperature.
>-Ben


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