On 27/02/2018 22:11, Peter Parry wrote:
On Tue, 27 Feb 2018 20:41:58 +0000, Enrie Membership
wrote:


I've just had a 6' x 6' shed erected in the garden to house a few
stationary engines which I want to keep above freezing in the winter. I
do have an electrical supply nearby. What are folks thoughts on the most
efficient form of heating that will keep the shed just above freezing
point?.

Dehumidifier suitable for low temperatures. Dries and heats air.


My Ebac homedry has a circuit board with a 555 timer.

Once per hour it operates a solenoid valve in the gas stream
reversing the flow of warm refridgerant through the cooling
coils, so the ice crackles, melts and falls off. It does this
for about 3 mins and then reverts to normal operation.

QED, should work at very low temperatures.

I bought it 2nd hand in 1988, it's been around the world, to
the pacific for 2 years, and back. Still going strong.

You can buy special heating cable that is mains rated.