Subject: Re: [BEE-L] water jacketed tank antifreeze


> Mineral oil is used in the Cook&Beals heat exchanger instead of water by a 
> few beekeepers.
>
FWIW- oil, not necessarily mineral, is used as a thermal medium in a number 
of electrical devices for cooling, transformers for one. Therefore it is 
just as god for heating with the much higher temperature capability and 
negligible evaporation.

Alden Marshall
Hudson, NH 

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