Cob: Thermal Mass

Tue Mar 25 20:38:34 CST 2003

It's also true as you say that other items in the house will contribute 
to thermal mass,,  but it combined total alone would be  insufficient 
for any thermal flywheel affectt, even I would say for as short a period 
 as 12 hours.   To think it would have a lag time of over 12 hours is 
unrealistic.

The case mentioned was, a raised, standard wooden joist floor and wooden 
joist ceiling.   The thin walls where light sinsulation with very little 
thermal capacitance. Same for the floor and ceiling.

So Chandra's strategy would not be good for a  low thermal mass home.   
You would be simply making yourself uncomfortable trying to charge the 
insignificant mass which has a very low capacity. She should follow the 
rules for keeping a house warm or cool that are applicable for low 
thermal mass, i.e., standard homes, which is what she described.    Why 
on earth do you say people should be doing something which makes them 
uncomfortable and has absolutely no effect on storing heat or acting as 
a sink to any signifigant degree over a period of a couple of hours, I'd 
say.

Darel

Dorothy Bothne wrote:

> It's true that the thermal mass from the plaster alone is negligible, 
> but the cumulative affect of everything in the house (walls, floors, 
> ceiling, furniture) would contribute to the thermal mass.  Chandra's 
> strategy is a good routine to follow, Cob or not.
>
> Dorothy
>
> Darel wrote:
>
> The plaster on lath would not have sufficent thermal mass to do much at
> all during a diurnal period, let alone do anything close to a month,
> three, or six month lag.
>
> Thermal mass of a thin plaster on lath is nearly negligible.
>
> For structures with a lot of thermal mass this strategy is recommended,
> but NOT, just plaster on lath.
>
> Chandra wrote:
>
> Another hint for coping with temps using thermal mass: I let the house
>  cool down to 60 or a bit cooler in the spring (April) and allow it to get
>  over 90 in the fall (Sept) to give myself a bit of extra wiggle room 
> in the
>  extreme seasons.
>
>
> ------------------------------------------------------------------------
> Do you Yahoo!?
> Yahoo! Platinum 
> <http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html> 
> - Watch CBS' NCAA March Madness, live on your desktop 
> <http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html>! 

-------------- next part --------------
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title></title>
</head>
<body>
It's also true as you say that other items in the house will contribute to
thermal mass,,  but it combined total alone would be  insufficient for any
thermal flywheel affectt, even I would say for as short a period  as 12 hours.
  To think it would have a lag time of over 12 hours is unrealistic.<br>
<br>
The case mentioned was, a raised, standard wooden joist floor and wooden
joist ceiling.   The thin walls where light sinsulation with very little
thermal capacitance. Same for the floor and ceiling.<br>
<br>
So Chandra's strategy would not be good for a  low thermal mass home.   You
would be simply making yourself uncomfortable trying to charge the insignificant
mass which has a very low capacity. She should follow the rules for keeping
a house warm or cool that are applicable for low thermal mass, i.e., standard
homes, which is what she described.    Why on earth do you say people should
be doing something which makes them uncomfortable and has absolutely no effect
on storing heat or acting as a sink to any signifigant degree over a period
of a couple of hours, I'd say.<br>
<br>
Darel<br>
<br>
Dorothy Bothne wrote:<br>
<blockquote type="cite"
 cite="mid20030325135204.36008.qmail at web41801.mail.yahoo.com">
  <p>It's true that the thermal mass from the plaster alone is negligible,
but the cumulative affect of everything in the house (walls, floors, ceiling,
furniture) would contribute to the thermal mass.  Chandra's strategy is a
good routine to follow, Cob or not. </p>
  <p>Dorothy </p>
  <p>Darel<b><i> </i></b>wrote: </p>
  <p>The plaster on lath would not have sufficent thermal mass to do much
at<br>
all during a diurnal period, let alone do anything close to a month,<br>
three, or six month lag.<br>
  <br>
Thermal mass of a thin plaster on lath is nearly negligible.<br>
  <br>
For structures with a lot of thermal mass this strategy is recommended,<br>
but NOT, just plaster on lath.</p>

  <p>Chandra wrote:</p>

Another hint for coping with temps using thermal mass: I let the house 
 cool down to 60 or a bit cooler in the spring (April) and allow it to get 
 over 90 in the fall (Sept) to give myself a bit of extra wiggle room in
the 
 extreme seasons. 
 
 
 
 
 <hr size="1">Do you Yahoo!? 
 <a
 href="http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html">Yahoo!
Platinum</a> - Watch CBS' NCAA March Madness, <a
 href="http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html">live
on your desktop</a>! </blockquote>
 
</body>
</html>

Rethink Your Life! Finance, health, lifestyle, environment, philosophy	The Work of Art and The Art of Work Kiko Denzer on Art