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[Smathis93]

At the plant, we have pipes at temperatures around 200-400 degrees with various ammonia based chemicals like ammonium nitrate, urea, and nitric acid. We are thinking gin installing flange covers/spray shields as a better defense mechanism for detecting and making leaks safer. Normally the pipes are insulated, but the flanges are exposed for leak detection but also to let the flanges stay cool so the bolts don't experience thermal expansion. If we cover the flange (and essentially recapture the heat loss through it, would it have a significant effect on the tightness of the bolts (create more leaks?) i did a calculation treating the SS. Spray shield as insulation, with the bolt side of the flange still being exposed to the air (think of the spray shield as a donut, just around the flange, but the front and back sides of the flange are still open to the air) and found that the change in conductivity was was relatively small. It's guessing what happens with the heat not lost through the flange that I need help with. how do I calculate that, or should it have much of an impact? Thanks

[breizh]

http://www.thermaxxj...lation-jackets/

 

Hi ,

You may consider the technology above:  save energy, removable .,,, 

 

My 2 cents

Breizh