[Greenbuilding] Nansulate insulation
Norman Feldman
nfeldman at fountainhouse.org
Sun Jan 23 08:42:39 CST 2011
A few years ago Serious Materials had Thermarock, a sheetrock with builtin Aerogel. I don't see it on their website now, though, so it might have been discontinued.
http://www.greenformat.com/products/1700-ThermaRock-240-245
VIP panels (vacuum insulated panels) are thin with high R-value. Two manufacturers I was in touch with in 2009:
http://nanopore.com/
1/2" was R20. contact was Doug Smith, smith at nanopore.com
http://www.va-q-tec.com/paneele_en,2753.html
12 mm thick panel with R value of 11 (55-70 Euros/square meter) and a 40mm thick panel (two 20mm panels), R37 (140-180 Euros/sq.meter). The R values and prices have probably changed since then. The contact person was Dr. Roland Caps, Caps at va-q-tec.com.
________________________________________
From: greenbuilding-bounces at lists.bioenergylists.org [greenbuilding-bounces at lists.bioenergylists.org] on behalf of greenbuilding-request at lists.bioenergylists.org [greenbuilding-request at lists.bioenergylists.org]
Sent: Saturday, January 22, 2011 3:00 PM
To: greenbuilding at lists.bioenergylists.org
Subject: Greenbuilding Digest, Vol 5, Issue 29
Send Greenbuilding mailing list submissions to
greenbuilding at lists.bioenergylists.org
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
or, via email, send a message with subject or body 'help' to
greenbuilding-request at lists.bioenergylists.org
You can reach the person managing the list at
greenbuilding-owner at lists.bioenergylists.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Greenbuilding digest..."
Today's Topics:
1. Re: manure containing daub/hair in plaster (Chris Koehn)
2. Re: Human hair (was Re: bovine booster) (Lawrence Lile)
3. Re: Human hair (was Re: bovine booster) (kenn brown)
4. Re: Non-Motorized Rangehood (Bob Klahn)
5. Re: Human hair (was Re: bovine booster) (natural building)
6. Nansulate Insulation (elitalking)
7. Re: Nansulate Insulation (Steve)
8. Pithy python (nick pine)
9. Re: Non-Motorized Rangehood (David Bergman)
10. Heating on a half cord of wood per year. (Corwyn)
11. Re: Non-Motorized Rangehood (Lynelle Hamilton)
12. Re: Nansulate Insulation (Gennaro Brooks-Church)
13. Re: Nansulate Insulation (Corwyn)
14. Re: Pithy python (Kathy Cochran)
----------------------------------------------------------------------
Message: 1
Date: Fri, 21 Jan 2011 12:54:41 -0800
From: Chris Koehn <chris at koehn.com>
To: greenbuilding at lists.bioenergylists.org
Subject: Re: [Greenbuilding] manure containing daub/hair in plaster
Message-ID: <22F41F07-B425-40D5-A408-0BBAEFEB25E3 at koehn.com>
Content-Type: text/plain; charset="us-ascii"
The 19th C buildings I worked on in Wisconsin and elsewhere that were wattle and daub (as part of the German "fachwerk" wall technique) used hair that was brushed from horses in the spring when they shed their winter coat. Not enough rejuvenating hair in a horse's tail to amount to much. The fibres are remarkably similar to the chopped fibreglass that's sometimes used to reinforce concrete slabs these days.
The Germans also used a clay "nogging" technique in Wisconsin, as documented and reconstructed here: <http://centrevillesettlement.com/claynognlutze.htm>
Chris Koehn
TimberGuides Design&build
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/e0baf7ae/attachment-0001.html>
------------------------------
Message: 2
Date: Fri, 21 Jan 2011 17:02:57 -0600
From: Lawrence Lile <LLile at projsolco.com>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
Message-ID: <AC254829C2A6324CB4DF94CED1DB37FB663A12DDFF at exchange>
Content-Type: text/plain; charset="us-ascii"
>Dunno about using it in earthen floors or plasters, but I know a guy who collected people hair from salons and used it in lime plaster. He considers it a failed experiment. Much too fine and pliable, with a really aggravating tendency to clump up.
One could collect plenty of hair from my sink drains. I'd be glad to donate it, just come and get it. Bring your auger. Includes free soap.
--Lawrence
From: greenbuilding-bounces at lists.bioenergylists.org [mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Gennaro Brooks-Church
Sent: Thursday, January 20, 2011 6:09 PM
To: Green Building
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
Yes now that I look into it human hair isn't that strong. You can barely pull apart a horse hair. Strong stuff. Same for pig hair. But human hair is like wet noodles compared.
Gennaro Brooks-Church
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com<http://www.EcoBrooklyn.com>
22 2nd St; Brooklyn, NY 11231
On Thu, Jan 20, 2011 at 4:47 PM, Mark Piepkorn <duckchow at potkettleblack.com<mailto:duckchow at potkettleblack.com>> wrote:
On 1/19/2011 4:32 PM, Gennaro Brooks-Church wrote:
... earthen floor ... Human hair too - lots of hair salons here in NY! How about that for local green building - NY green builders using human hair because is the most readily available.
Dunno about using it in earthen floors or plasters, but I know a guy who collected people hair from salons and used it in lime plaster. He considers it a failed experiment. Much too fine and pliable, with a really aggravating tendency to clump up.
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
Greenbuilding at bioenergylists.org<mailto:Greenbuilding at bioenergylists.org>
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/d66f7014/attachment-0001.html>
------------------------------
Message: 3
Date: Fri, 21 Jan 2011 17:12:39 -0600
From: "kenn brown" <kenn2536 at centurylink.net>
To: "'Green Building'" <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
Message-ID: <80900D84FDC04BACA3E9F4009556810C at environm787aa3>
Content-Type: text/plain; charset="us-ascii"
All,
Don't you think that there would be too much shampoo and conditioners from
salons? Too slick..
Kenn
_____
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of
Lawrence Lile
Sent: Friday, January 21, 2011 5:03 PM
To: Green Building
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
>Dunno about using it in earthen floors or plasters, but I know a guy who
collected people hair from salons and used it in lime plaster. He considers
it a failed experiment. Much too fine and pliable, with a really aggravating
tendency to clump up.
One could collect plenty of hair from my sink drains. I'd be glad to donate
it, just come and get it. Bring your auger. Includes free soap.
--Lawrence
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Gennaro
Brooks-Church
Sent: Thursday, January 20, 2011 6:09 PM
To: Green Building
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
Yes now that I look into it human hair isn't that strong. You can barely
pull apart a horse hair. Strong stuff. Same for pig hair. But human hair is
like wet noodles compared.
Gennaro Brooks-Church
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231
On Thu, Jan 20, 2011 at 4:47 PM, Mark Piepkorn <duckchow at potkettleblack.com>
wrote:
On 1/19/2011 4:32 PM, Gennaro Brooks-Church wrote:
... earthen floor ... Human hair too - lots of hair salons here in NY! How
about that for local green building - NY green builders using human hair
because is the most readily available.
Dunno about using it in earthen floors or plasters, but I know a guy who
collected people hair from salons and used it in lime plaster. He considers
it a failed experiment. Much too fine and pliable, with a really aggravating
tendency to clump up.
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
Greenbuilding at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioener
gylists.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/843a6eac/attachment-0001.html>
------------------------------
Message: 4
Date: Fri, 21 Jan 2011 18:34:45 -0500
From: Bob Klahn <Home-NRG at dnaco.net>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Non-Motorized Rangehood
Message-ID: <4D3A1815.9060804 at dnaco.net>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Dan,
It's not a range per se, but there have been a number of
through-the-wall exhaust fans which had a chain operated outside weather
cap/flap. I believe that Nutone still lists one but have not checked
for a few years. You might be able to adapt one to whatever husk you
have now.
Failing that, could you make a top-hinged, lipped flap that is spring
loaded with a lever or chain operation? You might make it positive
opening by having a double-throw lever.
Bob Klahn
On 1/21/2011 12:08 PM, Dan Antonioli wrote:
> I have an old cottage bungalow that has a kitchen with a 9' ceiling. There's an opening for the old range-hood, which back in the day were not motorized.....they used natural "heat rises" ventilation, and while this isn't as efficient as a motorized fan vent it still works.
>
> Having used this kitchen for a number of years I've been impressed by how well the opening works, but even in our mild bay area moderate winters it still gets cold and I'd like to close the opening when not cooking. So I'm looking into range-hoods that would have a simple lever action opener. Are any such units available? I'm prepared to make a custom range-hood, but if this has been done before and is marketed then life will be a little easier.
>
> Dan Antonioli
>
> Green Builder
> Ecovillager
> Oakland, CA
> _______________________________________________
> Greenbuilding mailing list
> to Send a Message to the list, use the email address
> Greenbuilding at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
> __________ Information from ESET NOD32 Antivirus, version of virus signature database 4415 (20090910) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Home-NRG.vcf
Type: text/x-vcard
Size: 400 bytes
Desc: not available
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/a878ef5f/attachment-0001.vcf>
------------------------------
Message: 5
Date: Fri, 21 Jan 2011 15:36:21 -0800
From: natural building <naturalbuilding at shaw.ca>
To: kenn2536 at centurylink.net, Green Building
<greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Human hair (was Re: bovine booster)
Message-ID: <6C3F2C0D-6202-4F9F-B406-43078E6FF447 at shaw.ca>
Content-Type: text/plain; charset="windows-1252"; Format="flowed";
DelSp="yes"
As Gennaro pointed out, human hair is not very effective since it is
too weak and while it is good to have clear hair, the conditioner
might be counter-productive. But horse hair - particularly body hair -
is traditionally good and, depending on your location, can be
plentiful. Long strands of anything are a problem. It is also
preferable to wash the oils out of it since this helps it to mix
better, otherwise it tends to clump up badly. Mane and tail are less
desirable since the long strands need to be chopped up into short
pieces just as straw is chopped when added to plaster.
Regards,
Steve Satow
www.naturalbuildingsite.net
naturalbuilding at shaw.ca
On 21-Jan-11, at 3:12 PM, kenn brown wrote:
> All,
> Don?t you think that there would be too much shampoo and
> conditioners from salons? Too slick..
> Kenn
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/0c338364/attachment-0001.html>
------------------------------
Message: 6
Date: Fri, 21 Jan 2011 22:12:23 -0500
From: "elitalking" <elitalking at rockbridge.net>
To: "Green Building" <greenbuilding at lists.bioenergylists.org>
Subject: [Greenbuilding] Nansulate Insulation
Message-ID: <3DAB2CBC3025470D865CC9470273331C at lift>
Content-Type: text/plain; charset="windows-1252"
Does anyone have experience with Nansulate. I have been asked about it. I looked at their web site. This thin coat application is claimed to be insulation. However, they do not provide R value of insulation. They are claiming a 33% reduction in heat flow after 3 coat application. It seems to me that the most significant potential might be as an air barrier reducing infiltration. However, they are claiming significantly reduced conductance. It is hard to believe that such a thin layer could have a significant impact on conduction. In Youtube video of link below, they show reduced thermal bridging with before and after thermal image.
http://www.nansulate.com/nansulate_homeprotect_clearcoat.htm
You tube description of the science:
http://www.youtube.com/NanoPioneer#p/a/u/1/ep93L4QeEAk
Is this stuff legitamate or snake oil?
Eli
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110121/a6a2c182/attachment-0001.html>
------------------------------
Message: 7
Date: Fri, 21 Jan 2011 19:32:58 -0800
From: Steve <steve at greengeek.ca>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Nansulate Insulation
Message-ID:
<AANLkTi=g1AASxp2ig-arioaa2xd2TueJo6gC5MOnLxE4 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi Eli,
> http://www.nansulate.com/nansulate_homeprotect_clearcoat.htm
>
> Is this stuff legitamate or snake oil?
I've looked into several similar products over the last few years,
invariably none of them were any more effective at insulating than a
clay-based paint. I have no experience with this particular product,
but based on similar ones I've seen, I'd lean towards snake oil. I
hope I'm wrong about one of these products eventually though, as
paint-on insulation would be very beneficial!
The closest I've seen to a thin insulation that have proven results
are aerogel-based products:
http://en.wikipedia.org/wiki/Aerogel
http://inhabitat.com/exciting-advances-in-insulation-with-aerogel/
http://www.aerogel
-Steve
--
http://www.greengeek.ca
------------------------------
Message: 8
Date: Sat, 22 Jan 2011 07:46:05 -0500
From: "nick pine" <nick at early.com>
To: <greenbuilding at lists.bioenergylists.org>
Subject: [Greenbuilding] Pithy python
Message-ID: <11559C71817D4A818565720788182A26 at nickacer>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Nathan Hurst writes:
>nick pine wrote:
>> 2011 is the sum of 11 consecutive primes.
python
>>> primes = [2]
>>> for i in range(2, 2011):
... if all((i % x) for x in primes):
... primes.append(i)
...
>>> firstprime = bisect.bisect_left([sum(primes[i:i+11]) for i in
range(len(primes))], 2011)
>>> print firstprime
36
>>> sum( primes[36:36+11])
2011
>>> primes[36:36+11]
[157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211]
njh
------------------------------
Message: 9
Date: Sat, 22 Jan 2011 10:48:43 -0500
From: David Bergman <bergman at cyberg.com>
To: Green Building <greenbuilding at lists.bioenergylists.org>, Green
Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Non-Motorized Rangehood
Message-ID: <6.2.3.4.2.20110122104610.0a420ab0 at mail.cyberg.com>
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
At 06:34 PM 1/21/2011, Bob Klahn wrote:
> Dan,
>It's not a range per se, but there have been a number of
>through-the-wall exhaust fans which had a chain operated outside
>weather cap/flap. I believe that Nutone still lists one but have
>not checked for a few years.
I've had one of those Nutone fans for years and the flap doesn't seem
to help much. In the winter, I put a plexi enclosure over the inside
to prevent drafts (and, of course, have to remove it whenever I need
the exhaust).
David
DAVID BERGMAN ARCHITECT / FIRE & WATER LIGHTING + FURNITURE
architecture . interiors . ecodesign . lighting . furniture
bergman at cyberg.com www.cyberg.com
241 Eldridge Street #3R, New York, NY 10002
t 212 475 3106 f 212 677 7291
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110122/6aeddcdb/attachment-0001.html>
------------------------------
Message: 10
Date: Sat, 22 Jan 2011 11:21:00 -0500
From: Corwyn <corwyn at midcoast.com>
To: Greenbuilding <greenbuilding at lists.bioenergylists.org>
Subject: [Greenbuilding] Heating on a half cord of wood per year.
Message-ID: <4D3B03EC.3040604 at midcoast.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Greetings,
It was claimed recently that a house in a cold climate (mine is 7482
Degree-Days) would be unable to be heated on a half cord of wood per
year. This got me thinking, what it would take to turn my house into
such an impossibility?
To start, my house is pretty energy efficient as it stands (details can
be seen at my website) and used 1.5 cords last year (it was a warm
year). Additionally, I have a energy model for it, that currently is
within 3% of actual fuel usage. So, if someone were offering a free
Nissan Leaf to anyone who could heat on only 1/2 cord of wood, what
would I do?
Step 1: Get more heat compact firewood. Currently, I use deadfalls,
scrub, some hardwood, some softwood (say 20MBTU/cord) off my property.
Since the benchmark is measured in cords (volume), I would use nice dry
white oak at 26 MBTU/cord. With the assumption my wood stove gets its
rated 75% efficient, that means I need to reduce my heating needs from
the current 30,780,000 BTUs / year to 9,640,000 BTUs / year.
Step 2: Put in a Heat Retaining Ventilator (HRV), so that I can reduce
my air infiltration. The goal would be the Passivhaus maximum of 0.6
ACH50. This should save 7,700,000 BTUs / year. (23,100,000 total)
Step 3: Turn the basement from a semi-heated space into an unheated
space (includes some sealing and insulating). Insulate the ceiling with
12 inches of cotton batt insulation. Saving 12,700,000 BTUs / year.
(10,300,000 total)
Step 4: Build shutters for the wooden door, out of R-10 foam board
(completed last summer). Finish the triple layer interior storm for the
french door (should be done this weekend). Savings 770,000 BTUs / year
(9,580,000 total)
And we're done. This would make a very cheap Nissan Leaf for me.
Anyone willing to put up the Leaf?
Thank You Kindly,
Corwyn
--
Topher Belknap
Green Fret Consulting
Kermit didn't know the half of it...
http://www.greenfret.com/
topher at greenfret.com
(207) 882-7652
------------------------------
Message: 11
Date: Sat, 22 Jan 2011 11:33:12 -0500
From: Lynelle Hamilton <lynelle at lahamilton.com>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Non-Motorized Rangehood
Message-ID: <4D3B06C8.8010406 at lahamilton.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I've used one of those magnetized sheets that are sold to put over floor
registers. It helps and is easy to pull off. Depending upon the size of
the vent opening, you may need to duct tape 2-3 together. They don't
show once in place, so the "decor" hit isn't an issue.
Lynelle
On 22/01/2011 10:48, David Bergman wrote:
> At 06:34 PM 1/21/2011, Bob Klahn wrote:
>> Dan,
>> It's not a range per se, but there have been a number of
>> through-the-wall exhaust fans which had a chain operated outside
>> weather cap/flap. I believe that Nutone still lists one but have not
>> checked for a few years.
>
> I've had one of those Nutone fans for years and the flap doesn't seem
> to help much. In the winter, I put a plexi enclosure over the inside
> to prevent drafts (and, of course, have to remove it whenever I need
> the exhaust).
>
> David
>
> *DAVID BERGMAN* ARCHITECT / *FIRE & WATER* LIGHTING + FURNITURE
> architecture . interiors . ecodesign. lighting . furniture
> bergman at cyberg.com _www.cyberg.com_ <http://www.cyberg.com>
> 241 Eldridge Street #3R, New York, NY 10002
> t 212 475 3106 f 212 677 7291
>
>
> _______________________________________________
> Greenbuilding mailing list
> to Send a Message to the list, use the email address
> Greenbuilding at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
--
Effective immediately, please use the following e-mail address to reach
me: lynelle at lahamilton.com
------------------------------
Message: 12
Date: Sat, 22 Jan 2011 11:52:43 -0500
From: Gennaro Brooks-Church <info at ecobrooklyn.com>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Nansulate Insulation
Message-ID:
<AANLkTimqdMPdPie2MLB=7caVCEdcQxuxqJO27bRVwSY6 at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
I partnered up with nansulate a couple years ago to show the stuff in my
show house. I didn't test the heat loss properties, although I suspect it is
in the realm of other radiant barriers foil (but less effective).
I wasn't impressed. It smells toxic. If you are not careful it dries as a
milky white instead of clear. In some places it started flaking off.
I have concerns that if in fact it is nanotechnology then the dust could
enter our body and cause possible harm.
Nano particles are still a new frontier and the effect of small synthetic
particles on our body needs to be looked into.
I classify nanotechnology in the same realm as playing with food genetics -
it is still up in the air whether we are the sorcerer or the sorcerers
helper. Probably a mixture of both.
Gennaro Brooks-Church
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231
On Fri, Jan 21, 2011 at 10:32 PM, Steve <steve at greengeek.ca> wrote:
> Hi Eli,
>
> > http://www.nansulate.com/nansulate_homeprotect_clearcoat.htm
> >
> > Is this stuff legitamate or snake oil?
>
> I've looked into several similar products over the last few years,
> invariably none of them were any more effective at insulating than a
> clay-based paint. I have no experience with this particular product,
> but based on similar ones I've seen, I'd lean towards snake oil. I
> hope I'm wrong about one of these products eventually though, as
> paint-on insulation would be very beneficial!
>
> The closest I've seen to a thin insulation that have proven results
> are aerogel-based products:
>
> http://en.wikipedia.org/wiki/Aerogel
> http://inhabitat.com/exciting-advances-in-insulation-with-aerogel/
> http://www.aerogel.com/
> http://thermablok.com/
>
> -Steve
> --
> http://www.greengeek.ca
>
> _______________________________________________
> Greenbuilding mailing list
> to Send a Message to the list, use the email address
> Greenbuilding at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20110122/43515e87/attachment-0001.html>
------------------------------
Message: 13
Date: Sat, 22 Jan 2011 12:09:37 -0500
From: Corwyn <corwyn at midcoast.com>
To: Green Building <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Nansulate Insulation
Message-ID: <4D3B0F51.6050807 at midcoast.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 1/22/2011 11:52 AM, Gennaro Brooks-Church wrote:
> I partnered up with nansulate a couple years ago to show the stuff in my
> show house. I didn't test the heat loss properties, although I suspect
> it is in the realm of other radiant barriers foil (but less effective).
> I wasn't impressed. It smells toxic. If you are not careful it dries as
> a milky white instead of clear. In some places it started flaking off.
> I have concerns that if in fact it is nanotechnology then the dust could
> enter our body and cause possible harm.
> Nano particles are still a new frontier and the effect of small
> synthetic particles on our body needs to be looked into.
> I classify nanotechnology in the same realm as playing with food
> genetics - it is still up in the air whether we are the sorcerer or the
> sorcerers helper. Probably a mixture of both.
Nanotechnology is almost certainly not involved.
'Nanoparticles' would seem to be a fancy name for 'molecules'.
Thank You Kindly,
Corwyn
--
Topher Belknap
Green Fret Consulting
Kermit didn't know the half of it...
http://www.greenfret.com/
topher at greenfret.com
(207) 882-7652
------------------------------
Message: 14
Date: Sat, 22 Jan 2011 11:22:31 -0800
From: "Kathy Cochran" <kathys_old_house at goldrush.com>
To: "'Green Building'" <greenbuilding at lists.bioenergylists.org>
Subject: Re: [Greenbuilding] Pithy python
Message-ID: <02c901cbba69$bae58ed0$30b0ac70$@com>
Content-Type: text/plain; charset="us-ascii"
Does that mean that something either fabulous or catastrophic is going to
happen this year? (But I confess, being a "numbers nurd", that is rather
interesting.)
Kathy
-----Original Message-----
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of nick
pine
Sent: Saturday, January 22, 2011 4:46 AM
To: greenbuilding at lists.bioenergylists.org
Subject: [Greenbuilding] Pithy python
Nathan Hurst writes:
>nick pine wrote:
>> 2011 is the sum of 11 consecutive primes.
python
>>> primes = [2]
>>> for i in range(2, 2011):
... if all((i % x) for x in primes):
... primes.append(i)
...
>>> firstprime = bisect.bisect_left([sum(primes[i:i+11]) for i in
range(len(primes))], 2011)
>>> print firstprime
36
>>> sum( primes[36:36+11])
2011
>>> primes[36:36+11]
[157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211]
njh
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
Greenbuilding at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioener
gylists.org
------------------------------
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
Greenbuilding at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
End of Greenbuilding Digest, Vol 5, Issue 29
********************************************
More information about the Greenbuilding
mailing list