Renewable Energy and Sustainability Forum
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Anyone wishing to register as a new member on the forum is strongly recommended to use a "proper" email address. Following continuous spam/hack attempts on the forum, "disposable" email addresses like Gmail, Yahoo and Hotmail tend to be viewed with suspicion, and the application rejected if there is any doubt whatsoever
Recent Articles: Navitron Partners With Solax to Help Create A More Sustainable Future | Navitron Calls for Increased Carbon Footprint Reduction In Light of Earth Overshoot Day | A plea from The David School - Issue 18
   Home   Help Search Login Register  
Pages: [1]   Go Down
Author Topic: Newby starting a very small system  (Read 866 times)
Offline Offline

Posts: 3

« on: November 19, 2018, 03:37:30 PM »

I am looking to install a small system in my woodworking shed to keep the temperature around 6-8C during the winter nightime primarily.
Since retiring from caravaning I have a 8.8a 20w Solar panel, a charge controller and the 110a deep cycle battery.
As thing progress I intend adding another 110a battery and possibly another Solar panel.
My question is, will a Modified Sine Wave inverter of around 3000w peak work with a 500w oil filled electric heater.

I am open to suggestions regarding the setup and size of the equipment. Most of the system would be located in a storage area
adjacent to my workshop with the panel located on the sloping roof which faces almost due south with a clear line of site.

many Thanks. Huh winter
Full Member
Offline Offline

Posts: 184

« Reply #1 on: November 19, 2018, 04:35:44 PM »


Insulate and make airtight (as best you can) first off - pointless otherwise.

What if the temperature was below 6-8 degrees  for days at a time?

Winter sun is not going to charge batteries to run your radiator for hours on end.  Unless you have far, far more panels much larger than your existing.

Insulate and make airtight might be the best you can hope to achieve.

Hero Member
Offline Offline

Posts: 846

« Reply #2 on: November 19, 2018, 08:21:18 PM »

Your inverter will run your heater. However, a fully charged battery would power it around 2 hours.
A number of halogen bulbs direct off the battery would provide some heat, more efficiently *, but you'd need impressive levels of insulation for it to make a difference.

*efficiency isn't really the issue here, as the inefficiency is heat, which is what you want. Simply may be a better word.

1.1kWp PV & SB1700. 7kW log burner.
Sr. Member
Offline Offline

Posts: 299

« Reply #3 on: November 20, 2018, 02:00:39 PM »

For low energy needs heating the person is often a better bet, either with infra red bulbs or heated clothing.

Making the shed airtight as possible will definitely help.

If you need to run the 500w heater and extension lead is a better bet, the solar should manage a few LED bulbs though.

Outback FM60. EPsolar 30a MPPT and a bunch of Tristar 45's. Hodge Podge of solar ~ 4500w. Various generators and 1000ah 24v forklift battery.

Turkish Turnip
Full Member
Offline Offline

Posts: 153

« Reply #4 on: November 20, 2018, 06:00:20 PM »

Small air to air heat pump for a few hundred pounds ?  Would work well, especially if you dont expect to use it during freezing weather.  The ones with R32 refrigerant are more eco friendly
Pages: [1]   Go Up
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!