Samuel,
Thanks for the information. We're based Calgary, Alberta with a cross mix of clients working in Northern Alberta [and beyond] and with the winter's relatively mild in the lower half of Alberta [where we are based] it's good information to have..
Regards,
John
Royal Industrial Supply
Calgary
To my knowledge, this material is the preferred materials for cold insulation (low temperature insulation) only, and the highest applied temperature might be only at 105 Deg.C, as per National Insulation Standard (1999). For insulation field, even the 160 Deg C is not a "High temperature insulating range". It is a nice material, but with very limited temperature range for application.
Organic insulating materials should not be used at temperatures above the limits stated in the specification, since there is evidence to show that acidic species and aggressive ions, in particular chlorides, can be leached out by exposure to water at elevated temperatures. Therefore, if this product will be applied to somewhere, it is very important to verify the upper temp limit.
Regards,
Samuel
-----Original Message-----
From: John [mailto:jru@telusplanet.net]
Sent: Monday, January 06, 2003 3:44 PM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] re: pipe insulation help
Hi Guy's,
Need help with a product..My background: I own an Oilfield Supply store which sells PVF products to that end I wanted to be able to "value add" by offering pipe insulation half shells. In my search I get to talking with a local manufacturer whom has a new design, patent pending...interlocking [tongue & groove] x 5 ft long. Now my question would be: 1. would this type of half shell be of an advantage to the insulator or should I just stick with the square cut variety? This manufacturer has offered an exclusive distribution of this product but I wouldn't mind hearing some opinions from other's.
The Technical details are as follows:
Polyurethane Foam Half Shell Insulation
Size: 1" to 16"
3 lbs minimum density polyurethane
Thickness available: 1", 1.5", 2", 3"
Length: 5 ft
Optional: Fire Retardant Polyurethane as "standard"
Then he goes on to say:
a.. Closer OD tolerances results in less material waste during
installation
b.. Improved joint area integrity eliminates ingress of foreign matter and
moisture
c.. Ease of installation - center guided system tongue & groove
d.. Improves heat retention and lowers operating costs for insulated
pipeline systems
e.. High temperature insulating range to 160 degree C
f.. Minimum compressive strength 40 psi
Can someone describe the advantages and dis advantages of using this type of half shell over a straight cut AND overall opinion? Or perhaps the polyurethane is different than standard products? SOS need 411 on this..
Cheers
John
>Is that the only source?
>
>I particularly like the one about his IQ.
The site lists a number of other newpaper articles on the topic. There's
also a very good site on a guy who called up Rush Limbaugh when he was
waving the bloody shirt and pointed out (before Limbaugh's handlers cut
him off) that Limbaugh got a doctor to write him a note that he couldn't
be drafted because he had a boil on his ass. At the time of the call
Limbaugh was raking John Kerry (who won the Silver Star) over the coals
<http://salon.com/politics/conason/2002/12/05/bush/index.html>
OK--no more politics. From me, anyway. Tweaking Bush is like shooting a
sitting bird, anyway, and it's way too off-topic and tends to inflame
passions. Here's a better question, anyway. Does anyone on the list have
any hard information that CAD and FEA actually makes projects better? I
know the claims--mostly from software vendors--and I've seen all the
gee-whiz articles in Mechanical Engineering. Neither is proof and
probably isn't even true. Neater drawings and cool-looking solid models
don't count either because flashier documents don't mean much.
I'm thinking about improved products produced at lower cost at least, but
I think the proof lies in the quantum leap--stuff that could never have
been built otherwise either because of money saved or design barriers
broken. I'll trust everyone not to bring up money saved by firing
experienced engineers and replacing them with outsourced CAD monkeys.
I posed this question on a FEA list once, and there was a lot of words
exchanged about how FEA can solve bigger more complicated problems but
almost nothing specific about better designs that resulted. I'm inclined
to doubt that there's been much product improvement with CAD or FEA. We
can make more mistakes faster with a far greater impact, but are we doing
things better and smarter?
Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw@skypoint.com | this distance" (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)
http://www.skypoint.com/~chrisw
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[Non-text portions of this message have been removed] Received on Sat Jan 11 11:56:00 2003
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