Originally Posted by Watsons
The FAQ's on this device say that the fuel cell needs its inards replacing every 1500 - 5000 hrs of use. This doesn't sound very long!!
Welcome to the board!
You make a good point, a thought provoking question, something to consider in the overall cost of power and energy sources.
As a DC power pack may be in some degree of service every hour of every day here is a perspective:
365 days in a long year X 24 hours per day = 8760 hours per year
1500 hour useable life / 8760 hrs = minimum .17 years of use - time to replace (about 2 months)
(1500 + 5000) = 6500 / 2 = 3250 hrs average life
3250 / 8760 = average .37 years of use - time to replace (about 4.5 months)
5000 / 8760 = maximum .57 years of use - time to replace (about 6.9 months)
Or consider using the fuel cell at maximum capacity only 8 hours a day:
8 x 365 = 2920 hours
2920 / 8760 = .33 years of use - time to replace (about 4 months)
NOTE: I am not certain if my math fully applies to the technology, as currently I do not understand what consumes or wears out the innards, and why the large variation of 1500 - 5000 hours; or why one fuel cell could last 3.33 times longer than another in a differant application.
In making a comparison of the best method of how to provide power and the related expense, each cruiser must also consider how often they need to replace the innards of their fuel tanks.
I am interested in this technology, and will study it much more. I suspect it will be refined in time, as often technology is.