The Confidence Game
I looked into it a few years ago and its something I really want to try. You’re right about needing a certain volume of ice, of course the better its insulated, the less ice you’d need.
I recall covering a lump of ice behind my house with hay accidently and uncovering it in late june to find it was still mostly there…started me a’thinkin.
While we are on Ice Boxes and Fridges, I have a question. I am finishing building an off grid house for a real nice guy. We are on a budget, but doing well. I’m trying to source a normal sized fridge (somewhere in the 16 to 21 cu.foot area) It can be new or used…..but the kicker is trying to figure out how many amps it draws on start up (surge) and running. None of the fridges seem to give that info. Does anyone have any info on Amperage requirements and are there any types of fridges that might be more efficient? Thanks in advance for any ideas.
We have the most awesome Mitsubishi 3 ton AC/Heatpump unit installed. Draws 13 amps. Has a slow start. No surge. It runs great in the 95 degree Texas heat, and the inverter has no problem, but adding a fridge might put us over the top.
Our Inverter is 9 kw, and has a 37.5 amp limit. We have good battery storage (22.5 kWh) but the bottleneck is the single Sol-Ark inverter.
Years ago I set up an off grid solar system, the trouble I did have was the sustained draw from motors (such as a fridge), I had enough juice in theory with a big margin, but the sustained draw can create voltage drops (which burns out motors). So I went to propane fridges. The 3 way fridges had some design flaws for a while, best avoided.
I thought about using a propane fridge, but was concerned about venting off the burned gas and didn’t want to open the house up to the outside.
Had some friends with an off grid cabin years ago who had a propane fridge. Once it lit, it worked like a champ!