What kind of battery's are you using For rooftops solar ? sealed lead acid batteries?, lead-acid ? lithium-ion battery? I see In most cases, lithium ion batteries are the best option for a solar panel system,
we try to keep it above 50%, but the 2500 cycles is quoted as discharge to 25% (I.e. using 75% of capacity)@Ian0
Out of interest, what depth do you charge / discharge to ?
How is the cycle calculated ? I was told by one company that was per day, another told us that was when it stopped charging and started discharging, which with the clouds we have, could be many times per day ,
Thank you,we try to keep it above 50%, but the 2500 cycles is quoted as discharge to 25% (I.e. using 75% of capacity)
I wouldn't - they'd be dead in no time - SLI batteries are good for peak current, but dreadful for cyclic use.For a house, I'd be tempted to try a whole bunch of recycled car batteries.
Why are they so dear? They're not exactly complicated and the design in a century old. The cynic in me suspects that it is something to do with never being able to sell replacements!Nickel-iron "Edison" batteries have a lifespan measured in decades rather than years, but they are about as expensive as lithium.
Lead-acid batteries do that too. That 'useful' property is the reason why smoking is strictly prohibited in battery vaults and why non-sparking brass tools are generally required inside of them. Work on battery vault ventilation equipment is done with a live work permit because shutting down the exhaust fans creates a greater danger.Nickel-iron "Edison" batteries [...] may also have the useful property of turning surplus energy into hydrogen, but that's still in the research stages.
How much energy would be wasted in compressing said gas into an 1800+ PSI high pressure cylinder, and how much would you net when it comes time to burn it? Compressors and their discharge piping tend to get mighty hot. Despite burning hot, hydrogen is a very low energy-density fuel compared to hydrocarbons. How would you separate the hydrogen from any oxygen contamination so your storage cylinder doesn't become a bomb?What would be handy is a way of storing all that hydrogen which you could produce in the summer and would be nice to burn in the winter. . .
There's plenty of people working on it:How much energy would be wasted in compressing said gas into an 1800+ PSI high pressure cylinder, and how much would you net when it comes time to burn it? Compressors and their discharge piping tend to get mighty hot...
Nevermind the investment cost for such a system. The expense for the volume of gas produced would be unrealistic.
by Aaron Carman
by Duane Benson
by Duane Benson
by Aaron Carman