[Strawbale] Message from Jenik in Hostetin

[Mark Bigland-Pritchard]

I think Jenik's experiment is interesting, and I hope he will have some 
monitoring results to share with us all.

My reading of the fluid mechanics literature is a bit different from 
Jenik's, though, so on the small project I'm putting in this September I 
will be going for a rather simpler anti-convection technique, breaking 
the hypothetical airflow with horizontal rather than vertical divisions. 
I'm hoping I can scrape together the funding for comparative monitoring 
on this, too. Watch this space.

I do think that both his approach and mine also need laboratory tests to 
determine wall assembly U-values, conducted to recognised 
national/international standards, and with a "standard" wall as a 
control. Anyone know of any educational / ecological trusts which might 
fund this sort of thing in Canada? (or indeed anywhere)

Mark


Michael lough wrote:

>
> For those not subscribed to the European SB list with an interest in 
> the avante garde of straw bale construction.(message below dashed lines)
>
> The link to Jeniks movies works well.
>
> Michael Lough
>
> ~even more disinclined to travel anywhere by polluting jet after this 
> last week…
>
>
>
> =============================================================
>
>
>
>
>
>
>
> Dear balers,
>
> what about becoming devoted bale-splitters, at some occasions?
> Of course,
> I'm returning to my ``old'' idea of composing the insulation
> layer of
> several sub-layers, creating separate convection chambers (a
> kind of
> queven even adruple window, with three air spaces) and reaching the best
> possible
> lambda 0.04 W/m.K this way (i.e., 40cm insulation layer of
> U=0.10 W/m2K).
>
> Our work in Hostetin went even better than I expected. 85cm
> sided large
> bales were split in 7cm to 11cm slices easily, and the slices
> were easy to
> put vertically to the wall, among hollow ``ladders'' made as a
> support for
> the future larch cladding. Even from a dozen small bales we had,
> this was
> easy (for one narrow module, the one before the last, they were
> excellent). In just one field (first floor, left from the last
> window) we
> have employed small bales ``as is'', without unpacking and
> separating
> their slices by paper.
>
> During some five days of installation, we improved the procedure
> to be
> quicker and to give better quality. E.g., we've made the ladders
> smoother,
> by putting 3cm EPS between their sides.
>
> A series of pictures (and four ``movies'') from the installation
> (some
> show wet bale surfaces, which were successfully cut away by a
> chain saw)
> is at
> http://amper.ped.muni.cz/jenik/sb/3-4ply/
>
> At home, I plan to put straw slices to OSB?-sided modules
> horizontally, at
> the ground, and just then attaching these modules to the wall.
> I'll report
> about it when realized.
>
> wishing you dry weather for straw manipulation,
> jenik
>
>
>
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