[permaculture-oceania] Trombe walls

[Robyn Francis]

The solar box collector is a box-like device added or built into to a  
building which works on the same principles of heat collection and  
convection as a Trombe Wall during the day but provides no thermal  
storage for evening heating. A Trombe Wall is generally the actual  
wall of the building on the sun side, painted black with glass on the  
external side - usually materials with good thermal mass qualities  
are recommended for the wall (e.g. earth, brick). Painted black, more  
heat is absorbed during the day & the glass provides insulation to  
ensure greater internal heat gain (or less heat loss) during the  
night. These have been particularly successful in cold dryland  
climates with extreme daily temperature fluctuations.
ciao
Robyn

On 01/08/2006, at 6:43 PM, Graeme George - Earthcare Permaculture wrote:

> I'm surprised to find that we're not all talking the same language  
> here. I've always known them as Trombe Walls (Michel-Trombe  
> actuallly). The Designers Manual lists trombe wall in the index,  
> but there's no mention of them on the page cited and I can't  
> l;ocate the text where they are mentioned. Wikipedia has a good  
> description and history. I've never heard them referred to as Solar  
> Box Collectors, that must be a NSW term. That is their function,  
> but the warm air is collected on the outside and vented into the  
> house from the top of the collector to be replaced by cooler air  
> drawn in from the house at the bottom of the unit, setting up a  
> convection current. There's a good demo unit operating at the  
> retrofitted house at CERES in Brunswick, Victoria.
>
> Graeme (Healesville, Victoria).
>
> P Ferguson wrote:
>> Re heat collectors Pat, are you thinking of a trombe wall?
>> Kerry Dawborn
>>
>>
>> No. trombe walls are  USUALLY INSIDE the building storing heat  
>> from big windows, and sometimes  they are filled with water.
>>
>>
>> Robyn answered th question.
>>
>> Those angled black things under a window are apparently called  
>> solar box collectors.
>>
>>
>>
>>
>>
>>  I wrote:
>> Can anyone recall what those heat collectors were called in the  
>> early days of solar energy?  Set at an angle below a window, they  
>> collected heat and it flowed into the room behind, and the vent  
>> could be closed in summer.
>>
>>
>>
>> P Ferguson
>>
>> Illawarra NSW
>>
>>
>>
>>
>>
>>
>> __
>
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Robyn Francis
Permaculture Education
Djanbung Gardens Nimbin NSW Australia
-  Accredited Permaculture Training & PDC
-  Design & consulting services
www.permaculture.com.au
robyn at permaculture.com.au
Ph 02-6689 1755 Mob 0429 147 138


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