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Thermally insulated structural attachment.

 
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abhio
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Joined: 08 Mar 2010
Posts: 478

PostPosted: Wed May 09, 2018 3:01 pm    Post subject: Thermally insulated structural attachment. Reply with quote

Dear Sefians,

I have to attach vertical fins to an existing vessel. The vessel being hot (150 deg. C), it is externally insulated. Hence, the fins will have to pass through the insulation to be connected to the vessel body. However, this will lead to the fins acting as heat sinks, which is not acceptable.

I would like to know of any product which could be used to provide a structural connection between the vessel and the fin while also providing a thermal break.

Looking forward to hearing from experts.

Thanks and regards,

A S Oundhakar
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sakumar79
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Joined: 18 Apr 2008
Posts: 663

PostPosted: Thu May 10, 2018 4:08 am    Post subject: Reply with quote

Dear Sir,
    Is it possible to continue the external insulation in the fins also? Will that solve the issue? Otherwise, could you give a sketch of the vessel and fin and the reason for the addition of the fin?

Yours sincerely
S Arunkumar
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abhio
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Joined: 08 Mar 2010
Posts: 478

PostPosted: Sat May 12, 2018 5:07 am    Post subject: Reply with quote

Dear Arunkumar Sir,

I had thought of extending the insulation, but that is working out to be complicated. I would prefer to use insulating washers. Could you recommend any suitable product?

Regards,

A S Oundhakar
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sakumar79
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Joined: 18 Apr 2008
Posts: 663

PostPosted: Sat May 12, 2018 5:34 am    Post subject: Reply with quote

Dear Sir,
    HILTI has a couple of Insulation Fasteners, but I dont think this is what you are looking at... As far as I can understand, you appear to require a means to connect the metal fin to the metal vessel without conducting heat from the vessel to the fin. Is that correct?

    What kind of load transfer is there at the interface? If the loads are not high, I am just having a wild thought - can you weld the head of one bolt on vessel and head of another bolt on fin and connect the bolts with a non-conducting sleeve that is threaded at each end? and fitted with insulation material inside

   Depends on temperature to be withstood and loads, etc this may or may not be feasible.

Yours sincerely
Arunkumar
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nwalavalkar
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Joined: 18 Nov 2010
Posts: 62

PostPosted: Mon May 14, 2018 5:44 am    Post subject: Reply with quote

Use Fabreeka TIM Washer or equivalent. There are many fibreglas based products available in the market.
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