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Thread: High Humidity Chamber
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06-09-2007, 01:56 PM #1
High Humidity Chamber
We had constructed a test chamber for CAR testing. It was earlier thought that it shall be for temp. variation right from -40 to + 40 deg c. But now the client is also increasing the humidity level upto 95%.
Now this chamber is not gas leak proof as it is seen now. The reason is when the temp goes up the silicone sealent applied from inside gets separated & the steam is leaking out. THis is happeing mostly at the wall / ceiling joints.
The inside surface is SS 304 & hence it is very difficult to apply a special resin / tape which are available for such applications. Any suggestion to stop this. We can consider Al Bitu tape, but will that stick on SS 304?
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06-09-2007, 11:05 PM #2
Re: High Humidity Chamber
Could you use a 'rubber' seal secured to the base frame with a ss strip screwed over it?
Brian - Newton Abbot, Devon, UK
Retired March 2015
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06-09-2007, 11:30 PM #3
Re: High Humidity Chamber
Weld the joints and put a rubber seal around the door(s)?
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08-09-2007, 07:17 AM #4
Re: High Humidity Chamber
Welding is not possible as the panel skin thickness is hardly 0.5mm. But the idea of gasket being screwed down could be workable. We shall do this & post the result on this forum
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09-09-2007, 06:10 PM #5
Re: High Humidity Chamber
Hi,smpsmp45
I believe that special kind of pop rivets are better, more tight...with screw you have always a leak...
...maybe you can use a special aluminum self adhesive tape (50mm wide) what we use to seal cold room ceiling panel joints from top. It is very light and adhesive is very strong...I do not know the manufacturer but we use that in India.
we also use angle SS profiles riveted to ceiling and to the wall with sealant under both ends for inside corners, of course when panels are SS type...
Best regards, Josip
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.
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11-09-2007, 10:35 AM #6
Re: High Humidity Chamber
Dear Josip,
Are you talking about Al Bitu Tapes. That is a al tape with a bitumen backing. That is what is being used for ceiling joints. The problem with that is when we apply that on SS 304 surface, the sticking is not so good. & with temp variation that easily comes off.
But that works very well with precoated sheets.
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11-09-2007, 05:03 PM #7
Re: High Humidity Chamber
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.
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12-09-2007, 07:25 AM #8
Re: High Humidity Chamber
Dear Josip,
This is some new information. Can you send some specification sheets or manufacturer details?
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