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From: P.J.Lawless <plawless@post.avnet.co.uk>
Date: Wed, 23 Aug 1995 15:20:51
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> Temperature Control
> 
> 
> 
>      Subject: Temperature Control
>      From: Peter.Thomas@burton.co.uk
>      Date: Tue, 25 Jul 1995 09:39:51 +0100
> 
> 
> 
>      Hello everyone on the Europa Mailing List !
> 
>      Jim Poole recently wrote .......
> 
>      <<Working with composites seems to be fairly straight- forward except
>      the heat (30C) has made things tricky lately.>>]
> 
>      Jim Poole in the States has highlighted (IMHO) the downside of working
>      with composites; temperature and humidity control.
> 
>      I am about the same distance in to the project as Jim, half way
>      through the tail kit (early days !).  So I would also appreciate
>      advice from builders who are further down the track.
> 
>      The 'good book' emphasises the importance of a warm and dry workshop.
>      It is summer here at the moment (Yorkshire UK), with my insulated
>      garage it is quite easy to get the temp up to 32 C and RH down to 45%
>      (+-5%).  (The heaters I use are two 1.5KW oil filled radiators)
> 
>      The trouble is when I go in and start working I am soon perspiring
>      pints ! (Yuk ! I know, but I have to tell the truth :)  ).
>      Consequently the humidity begins to rise. By the end of a lay-up it is
>      back up to 60% even though the temp is 30+ C. As soon as I leave it is
>      back down to 40%. Basically I am the problem !!!!
> 
>      (1) Does anyone use a lower temp and accept an (initially) higher 
> humidity?
>      (2) Does anyone use a dehumidifier ?
>      (3) Any (survivable) ways to stop perspiration ?
> 
> 
>      Thanks in advance for any comments.
> 
>      Pete
> 
>      York.........UK
> 
> 
> 
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> 
I use an extractor fan to keep the air turning over. 
 You pay to heat up the world - but the humidiy stays low.  
 Pete Lawless 109



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