Re: Aquatic Plants Digest V1 #59

• To: Aquatic-Plants at actwin_com
• Subject: Re: Aquatic Plants Digest V1 #59
• From: pstaeh at aplcomm_jhuapl.edu (Peter Staehling)
• Date: Wed, 4 Oct 1995 08:20:54 -0400

>	Re: Roof de-icing cables
>I was thinking of something:  They state "not to use in conditions
>over 0 Celsius"?  This may mean the cables rely on the surrounding
>environment to cool them (the insulation can't handle higher
>temperatures, like operation at room temperatures which would
>raise the temperature of the insulation above a certain level).
>
>Because they are intended to be used only in colder temperatures
>to melt ice, it may assume a low level of heat before the
>insulation breaks down.
>
The fact that they are submerged should provide a much better 
heat exchange than if they were in open air.  I think that 
this would probably more than negate the overheating problem
at aquarium temperatures.
Pete

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