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Old 03-07-2018, 01:31 PM   #1
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Default Hymer and WATT Fuel Cell

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Erwin Hymer Group of North America and WATT Fuel Cell Sign Supply and Engineering Cooperation Agreement.

https://www.prnewswire.com/news-rele...300609304.html



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Old 03-07-2018, 02:58 PM   #2
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I'm a tad confused... would this replace the underhood generator to charge the battery? ...using propane? RTs would need bigger propane tanks then.
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Old 03-07-2018, 03:00 PM   #3
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How Does a Fuel Cell Work?

https://www.wattfuelcell.com/portabl...uel-cell-work/


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Old 03-07-2018, 03:21 PM   #4
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500W of continuous power at 0.34 lb/hr? The conversion rate isn't bad, but that's hardly going to power an AC unit. You'll need three of those units and then we are talking 1lb/hr. So as someone else mentioned, they are going to need a bigger tank
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Old 03-07-2018, 03:42 PM   #5
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You need to put it into the context of the Fuel cell running 24/7. At a 0.5kW capacity it should provide 12 kWH/day. Normally an A/C unit would not run continuously but the FC would continue to charge the battery. To really get an handle on things you would have to put a kWH meter on the A/C unit to see how much energy it actually uses over a 24 hour period. You would still need a battery as a storage device to even out the load over a 24 hour period.
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Old 03-07-2018, 03:54 PM   #6
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Looks like about 2 hours of running and .75# of propane to get 70ah, which would be about 1 days worth for many with compressor frigs of the 5ish cf size or smaller. I think a 30# tank like most of us have has about 24 usable, do you would be good for month of power if you didn't need the propane for anything else. Not all that bad, I guess, but I would be in line to get one if it ran on gasoline.
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Old 03-07-2018, 04:56 PM   #7
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I just found this write-up of a fuel cell install in a truck camper...

https://www.truckcampermagazine.com/...truck-campers/

I agree that gasoline or diesel would be more interesting
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Old 03-07-2018, 05:48 PM   #8
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My question is, how much is this going to cost? Truma tried propane fuel cells with their VeGA line, and quietly killed them after a few years.

If they are reasonable (less than the price of the EFOY cells), this would be a technology that kills propane fridges dead.
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Old 03-07-2018, 06:26 PM   #9
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I'm not confused. Where do I send my money?
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Old 03-07-2018, 06:54 PM   #10
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Looks like Efoy has US dealers in SC and on the west coast. This looks like the answer to the 24/7 small generator suggestion in the other thread. With a decent lithium battery bank to handle surges, this would be pricey but awesome.
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