High temperature insulation unaffected by water absorption 1

• Feb 22, 2004

1
• #2

rnd2

Materials

Jun 29, 2003

595

AU

RNDguy
You need to explain a bit more.
How is moisture going to be present at 1000 deg. F?

 

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• Feb 22, 2004

• Thread starter
• #3

RNDguy

Mechanical

Feb 4, 2004

42

It is dificult to make the cladding of this insulation effectively water sealed. It is part of an equipment which will be necessarily hosed down every day for washing. Under these circumstances, water will keep ingressing inside insulation, and this can cause, for most insulating materials, a loss in insulation's thermal performance. Whenever the equipment is in service, this insulation will be exposed to temperatures of 1000F. So we need an insulation which can withstand 1000 degrees F, and should not derate due to water contact and absorption.

 

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• Feb 22, 2004

• #4

rnd2

Materials

Jun 29, 2003

595

AU

Consider a vacuum or semi-sealed double jacketed arrangement that closely conforms to the shape of your part and constructed of thin impervious material like stainless steel or glass, the inside of which can be vacuum or in the case of a semi-sealed arangement, filled with high quality insulation.

 

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• Feb 22, 2004

• Thread starter
• #5

RNDguy

Mechanical

Feb 4, 2004

42

Thanks. Any suggestions for insulation material if its semi-sealed?

 

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• Feb 23, 2004

• #6

rnd2

Materials

Jun 29, 2003

595

AU

Fumed silica, fine expanded vermiculite, very fine glass filler beads, talc,

 

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• Feb 23, 2004

• Thread starter
• #7

RNDguy

Mechanical

Feb 4, 2004

42

Thanks rnd2, much appreciated.

 

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