Lister Engine Forum

How to / DIY => Everything else => Topic started by: mikenash on November 08, 2022, 06:17:51 PM

Title: small heater
Post by: mikenash on November 08, 2022, 06:17:51 PM
Hi guys

Building myself a shed with a sloping front for a bunch of solar panels (4 X 375W) plus room inside for batteries, a couple of gensets . . .

Shed has a two-layer floor with insulation; and I'll do the same for roof and walls - mostly for sound-deadening

But, also, with a big LiFePo4 battery, and occasional sub-zero temperatures - I'm looking for an easy way just to trickle a few watts of warmth into it overnight.  I was wondering if something like one of those small panel-heaters that are used to keep the chill off small bedrooms etc might generate a few watts if run on 12, 24, or 48VDC

Shed is 3.6M X 3.6M X about 2m - very small area, and, once well-insulated, will take very few watts to keep above freezing I would think

I'd appreciate any thoughts from someone who may have done similar

Cheers
Title: Re: small heater
Post by: ajaffa1 on November 08, 2022, 08:11:51 PM
Hi Mike, glad to see you making progress with your off grid system. I assume you will be fitting some sort of invertor, check the specs on whatever you are going to be using, most of them have a large heatsink and often a cooling fan, might just be enough to keep out a light frost but will only work while you are drawing electricity.
Failing that have a look for a small infrared heat lamp, the sort of thing they use for keeping newly hatched chicks warm. Coupled with a frost stat it would turn on only when needed.
Let us know what you come up with.

Bob
Title: Re: small heater
Post by: mikenash on November 09, 2022, 04:04:10 AM
Hi Mike, glad to see you making progress with your off grid system. I assume you will be fitting some sort of invertor, check the specs on whatever you are going to be using, most of them have a large heatsink and often a cooling fan, might just be enough to keep out a light frost but will only work while you are drawing electricity.
Failing that have a look for a small infrared heat lamp, the sort of thing they use for keeping newly hatched chicks warm. Coupled with a frost stat it would turn on only when needed.
Let us know what you come up with.

Bob

hey Bob - yes, a heat lamp - good idea.  I'll have a look.  Cheers
Title: Re: small heater
Post by: mikenash on November 09, 2022, 04:05:40 AM
Hi Mike, glad to see you making progress with your off grid system. I assume you will be fitting some sort of invertor, check the specs on whatever you are going to be using, most of them have a large heatsink and often a cooling fan, might just be enough to keep out a light frost but will only work while you are drawing electricity.
Failing that have a look for a small infrared heat lamp, the sort of thing they use for keeping newly hatched chicks warm. Coupled with a frost stat it would turn on only when needed.
Let us know what you come up with.

Bob

hey Bob - yes, a heat lamp - good idea.  I'll have a look.  Cheers

Should have said, also, I like the look of the Victorn Easy Solar inverter/charger - especially as they aren't fussy about sine wive, hertz, volts etc of a generator input.  Cheers
Title: Re: small heater
Post by: Oiler on November 18, 2022, 10:03:16 AM
A 60 watt ligt bulb might do the trick. You only need to turn it on if frost is in the forecast.
Title: Re: small heater
Post by: glassblower on November 19, 2022, 02:19:26 PM
I have a similar system in my barn and use a greenhouse mat heaters under the batteries to keep them mildly warm. I believe they also make a mat just for batteries assuming you want to just keep those warm. If the inverter is a concern we use a heater strip at work in small control panels that only run 25-50 watts we install in small outdoor control panels for frost issues. Mount one below the inverter but I would concerned with making condensation there as well. The same can be done with a reptile heater ( I call them lizard heaters) found on flea bay and Amazon for cheap. They alast way longer than a light bulb and less likely to break since they're ceramic.
Are you installing a lister in the shed? Curious what base you would use for that beast.