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MikeHolm
14-02-2014, 01:45 AM
I have a situation where is -50C on the fridge side and I need to transfer the heat/cool to a fan coil but I cannot use glycol as it turns to jello. What is used at these temps for a heat transfer fluid?

Magoo
14-02-2014, 03:36 AM
Hi Mike.
I believe a product called temper goes down to -55' C and stays fluid.

MikeHolm
14-02-2014, 11:43 AM
Thanks Magoo, Found it but not found a supplier in Canada. Europe so far.

al
14-02-2014, 08:53 PM
Would Dowtherm or siltherm work at -50?

passandscore
14-02-2014, 11:25 PM
You may find this helpful.

MikeHolm
14-02-2014, 11:53 PM
Yes, thanks...

Magoo
15-02-2014, 12:53 AM
Hi Mike
if a small system volume, consider pure alcohol. The non drinkable stuff, highly volatile though.

northernbeach
20-03-2014, 04:34 AM
Thanks for sharing it.

MikeHolm
25-03-2014, 12:08 AM
We used 55% Dowtherm. works a treat

mbc
26-03-2014, 05:34 AM
Kerosene ( with out any wax ) is a good for this kind of jobs.
it is more safe than alcohol.

sterl
29-04-2014, 09:39 PM
Delimone. Its somewhat corrosive and it likes mineral oil; not flammable and very low viscosity even at these temps.