| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 955
Registered: 05-2003
| | Posted on Thursday, January 24, 2013 - 11:51 pm: |    |
These look to be very cool, Dow has one such product, anybody else? Are they avail for use now? Of course, at what cost? Would like to get more info on these new products. |
Dave Metzger
Senior Member
Username: davemetzger
Post Number: 451
Registered: 07-2001
| | Posted on Friday, January 25, 2013 - 04:01 am: | |
Dow Corning states in their product data sheet (http://www.dowcorning.com/content/publishedlit/62-1556-01.pdf) that it is a "developmental product", so may not yet be available commercially. They also state limitations:
• Careful handling is required to avoid damage
• Cutting panels will cause loss of vacuum and core material
• Loss of internal vacuum from damage or aging will result in increase of panel thermal conductivity to levels approximating aerogel insulation
To which I would add, puncture by a fastener also would result in loss of vacuum. Careful handling and jobsite conditions are not a happy combination.
They mention it can contribute to green rating systems due to its high recycled content. But I think it's inherently not sustainable--because nature abhors a vacuum. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 956
Registered: 05-2003
| | Posted on Friday, January 25, 2013 - 05:36 am: | |
You're a good man David, thanks for the input, why the hell are you posting at 4am? you're retired now, you're supposed to be sleeping at normal hours...not specifier hours, sweet dreams. |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 417
Registered: 12-2006
| | Posted on Friday, January 25, 2013 - 09:09 am: | |
I'm hoping that Dave is off in Europe or something and that he was just getting up from a gourmet meal to respond to your post.
On the other hand Jerome, you posted at 5:36 AM Florida time. I hope you get up early and didn't just pull another all-nighter. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 957
Registered: 05-2003
| | Posted on Friday, January 25, 2013 - 10:03 am: | |
No Ken, I actually went to bed before midnite (not my usual M.O.), but my faithful Eskipoo (wife's dog) has a bladder problem, though last night she was good to wake me before she made a big mess...on my way to toss the mess, I decided to log in some time online...I expect you are right about David & Carol, they do enjoy traveling. |
Anne Whitacre, FCSI CCS
Senior Member
Username: awhitacre
Post Number: 1297
Registered: 07-2002
| | Posted on Friday, January 25, 2013 - 06:34 pm: | |
we have vacuum insulation panels specified as part of a curtainwall assembly for our under-construction tower in Pittsburgh. The products are Isolar Glass Vacurex and Schuco VacuTherm. they both have a U value of 0.19 (European U value) and are fire rated. I haven't seen the submittals come through yet, but the systems have been bid and I'm not aware of any substitutions. The conversion of the European U value comes out to approximately an R30. (Divide .18 by 5.678 to get US U value, and take the inverse.) |
Randall A Chapple, CSI, CCS, AIA, SE, LEED AP
Senior Member
Username: rachapple
Post Number: 74
Registered: 12-2005
| | Posted on Monday, January 28, 2013 - 12:39 pm: | |
I went to a presentation on this product a few weeks ago given by Dow Corning. It is an interesting product but still in the developmental stages. As was stated, the panels cannot be cut and there is a maximum size limit. So for wall insulation it becomes a jigsaw puzzle to fit the panels together to accommodate the wall configuration. I think the primary market is spandrel panels for high energy efficient curtain wall systems. |
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