
03-31-2010
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Senior Member
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Join Date: Mar 2008
Posts: 536
Rep Power: 5
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Quote:
Originally Posted by scottyt
why no wires or hoses, its only a paint?
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It will void any ratings the hoses and wires have.
Disturb it, either by having the hoses and wires move naturally or by removing or installing new wires and it has to be re-applied.
and I'm doubtful. here is a cut and paste:
There are coating manufacturers who claim that their ceramic microsphere or hollow glass sphere modified roof and wall coating/ paint can “insulate” a roof or wall. In some cases, the manufacturer actually assigns an “R-value” or “K-value” to their product. Some coating manufacturers go as far as to tout the ceramic material they use as “the same ceramics used by NASA on the Space Shuttle” and even use the image of the Space Shuttle in their literature. How can they make the claim of an “R-value” or “K-value”, it is simple…
The manufacturer will expose two samples to a heat lamp. One of the samples is coated with their ceramic modified coating/ paint, the other sample is not. After a period of time, a heat reading is taken from the back of both samples. Invariably the coated sample shows a lower heat gain than the non-coated sample. Here’s where they make their claim… The question is then asked, how much insulation would be required to reduce the heat gain through the un-coated sample to register the heat reduction of the coated sample. The answer given is an assumption as to what the “R-value” or “K-value” is.
Ask yourself this question, “if ceramics are such good insulators, why is there a handle on a coffee cup?”
The answer, “they are not good heat insulators.”
One may argue, if there are not good heat insulators why are they used on the NASA Space Shuttle?
Ceramics are used on the shuttle because they absorb heat and evenly distribute it, not because they are a good insulator. What keeps the interior of the shuttle from becoming an oven during reentry is a blanket made of Nomex fibers between ceramic tile and the interior of the shuttle. The Nomex fibered blanket is the actual insulation, not the ceramic tiles. This was never more apparent than with the Columbia shuttle disaster.
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