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The passive warm bedroom. - Page 2

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Posted by songbird on January 11, 2014, 10:00 pm
Morris Dovey wrote:

  we had about 3 of those in December...


Posted by Morris Dovey on January 11, 2014, 10:19 pm
On 1/11/14 4:00 PM, songbird wrote:

That?s too bad - you?d have had to live all closed up like folks with  
conventional heating systems (except that you wouldn?t have had to pay  
for your heat). :-)

Morris Dovey

Posted by songbird on January 12, 2014, 9:37 pm
 Morris Dovey wrote:

  without sunshine for most of December i don't see how
we would avoid paying for heat with any solar system.
the best thing i can do for an upgrade here would be to
install a solar hot water system and then on the few
sunny days in the winter i could divert some of that
for space heating.  i don't think it would take much to
do that, but i've not looked into it yet.

  storage of heat or electrical energy is just not that
developed yet where i could put in a system and expect it
to supply the whole heating requirement of this house
even as small as it is.  i'd love to and i keep watching


Posted by Morris Dovey on January 13, 2014, 12:14 am
 On 1/12/14 3:37 PM, songbird wrote:

That?s a lousy situation, indeed. What we learned from the building  
shown on the web page is that the panel design will collect useful  
amounts of heat whenever there?s enough sunlight to read a newspaper  
comfortably (clear sky not required).

Iowa isn?t generally thought of as having a lot of winter sun, but we  
found that by using the concrete slab for heat storage, the building  
stayed remarkably warm. It was so surprising that I picked brains here  
to find out what was really going on. If you?re interested, you can read  
that thread at  

The results of that discussion became part of the web page linked below.

Whole-structure (or even single-room) performance is much affected by  
insulation and ?tightness? of the building. Warm air rises and if  
there?s a passage for it to escape through ceiling/roof, it will - but  
both of these things are true regardless of heating method.

I hate for people to feel a need to retreat into a single room in order  
to keep warm!

Morris Dovey

Posted by songbird on January 13, 2014, 6:53 am
 Morris Dovey wrote:

  our south facing wall is on the side of
the garage with no easy method of moving
air passively from the room next to the
garage.  this house was not designed or
sited for solar/passive use.  i think i
would do much better to use panels on the
side of the garage to heat water and then
have a small electric pump to move the hot
water around (in a closed system i'd assume
the force needed is just that to overcome

  this all is however some time away from
being done or detailed out.  when i become
the owner (if i do) is when i will need to
start costing things out as if i can get
the cost right then it makes it affordable
for me to stay.  if it is too expensive
then it becomes easier to sell it and move
to another place with fewer/less expensive
negatives to work around.

  i think it makes sense to think in layers.
the house here is effectively two rooms and
two small rooms.  it isn't set up in layers
or for getting much of the southern sun in
the winter.

  if i do stick it out here one other option
is to convert the garage to another room and
then i would be right next to the south  
exposure and could benefit from passive
solar heating and such without having to pump
air/water around.  we'll see what happens...  :)


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