12V dc refrigerators are great but they consume a lot of electricity this the need for so many batteries and solar panels. What we need is a good and cheap fuel cell that runs on propane!
I have seen a couple of fuel cell electric vehicles up close and ridden in them that were powered by hydrogen. Their performance was woefully unimpressive. There are electric generators that run on propane. And quite affordable too, that will recharge batteries to run a compressor refrigerator. While propane is hydrogen rich, I think the carbon atoms must be stripped from it before it can be used in a fuel cell, although I have not researched propane as a direct fuel cell, fuel.
I've seen propane powered fuel cells designed for RVs up close and personal, but I'm under NDA not to disclose anything about them. However, they do work...
Can you expand on the “rule of thumb” that you reference? How was the 300-400 watt-hrs /day calculated from a 100 watt solar panel? (I.e. what is the charging rate used, number of hours a day/ any conversation factors?)
That’s too difficult for me to model, so this is from anecdotal data in the field. In the northern states during winter there will be a lot less Wh/day, while in the southern states during the summer there will be a lot more Wh/day. I’ve found that 300 Wh/day per 100 Watts of solar panel is a good place to start. But as I always say, your mileage may vary.
12V dc refrigerators are great but they consume a lot of electricity this the need for so many batteries and solar panels. What we need is a good and cheap fuel cell that runs on propane!
I have seen a couple of fuel cell electric vehicles up close and ridden in them that were powered by hydrogen. Their performance was woefully unimpressive. There are electric generators that run on propane. And quite affordable too, that will recharge batteries to run a compressor refrigerator. While propane is hydrogen rich, I think the carbon atoms must be stripped from it before it can be used in a fuel cell, although I have not researched propane as a direct fuel cell, fuel.
I've seen propane powered fuel cells designed for RVs up close and personal, but I'm under NDA not to disclose anything about them. However, they do work...
Can you expand on the “rule of thumb” that you reference? How was the 300-400 watt-hrs /day calculated from a 100 watt solar panel? (I.e. what is the charging rate used, number of hours a day/ any conversation factors?)
That’s too difficult for me to model, so this is from anecdotal data in the field. In the northern states during winter there will be a lot less Wh/day, while in the southern states during the summer there will be a lot more Wh/day. I’ve found that 300 Wh/day per 100 Watts of solar panel is a good place to start. But as I always say, your mileage may vary.