Re: [RE-wrenches] discharging Rolls batteriesHi Hugh.
Positive electrode: PbO2 + 3H +HSO4 + 2e = PbSO4 + 2H2O (e= electron)
Negative electrode: Pb + HSO4 = PbSO4 + H +2e
Sorry, I can't insert the superscript symbols to show electrical charge. If it
is confusing let me know and I will repost
Hi Bruce,
At 22:58 +1300 16/1/10, Bruce Geddes wrote:
in cold weather the money counters operate more slowly and if the
temperature rises they return to normal speed. The money is still
there,
Yes but if that is the case then the actual capacity is not affected
by temperature - just th
Wrenches,
The front page of the vol 2 #12 issue of Solar Industry magazine is a very
candid article on micro inverters, primarily the Enphase. Enphase input
directed at installers may differ from their peer review simply because
other inverter mfgrs can dissect and test their competitors products t
And Sunpower. But, they're not on the list
http://www.enphaseenergy.com/downloads/Enphase_Module_Compatibility_List.pdf
because Sunpower has not officially endorsed their use with Enphase.
We should probably take any further discussion off list.
See ya!
Marv
707 763-4784 x7016
Marco Man
Hi Hugh I am copying you and wrenches as some of my posts have not shown up.
The way I look at it is: A charged battery has some number of molecules of
Ions? each carry 2 electrons. That is you store of Amp-hours, 6.25x10^18
electrons make 1 amp-sec. Now at rest and 25 C the electrons want to
Re: [RE-wrenches] discharging Rolls batteriesA battery is an open system. Heat
is lost. 2nd law of themodynamics. See
http://theory.uwinnipeg.ca/mod_tech/node70.html
- Original Message -
From: Hugh
To: RE-wrenches
Sent: Saturday, January 16, 2010 5:04 AM
Subject: Re: [RE-wre
I'm reading a piece on energy storage in the latest issue of Distributed
Energy mag.
The writer, Lyn Corum, repeatedly refers to the capacity of storage mediums
(thermal, compressed air, flywheel, battery) in kW and MW terms.
Heck, even my friends at Beacon Power refer to their flywheel sys
OK I have been studying the literature list given me by Joel. I did
study all of this theory stuff back in the 1970s when I first got
into this stand-alone windpower stuff, but it was good to go over it
again, especially with my new enquiry.
I also have three fairly clear personal answers to
Marco,
You are right on with your observation. It is extremely frustrating
when "industry experts" in a technical industry use the wrong technical
terms.
rant ON
Another example; the improper use of "panel" when the intended meaning
is "module". Check 690.2 for the definitions. Just wait
ower magazine
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H Marco
Yes both terms are important, but most of the time they are looking for power
during the time it takes to fire a peaking plant generator. It may take 10 to
15 seconds, Also one of the big uses of storage for utilities is frequency
stabilization, it is desirable to supply and absorb grea
Hello Marco.
No d'oh!
Your assessment is correct; you can't store kilowatts of power, you
*can* store kilowatt hours of energy.
Author Lyn Corum might have slipped up a couple times in there and
dropped an 'h' from the kw, but maybe not -- because when storing energy
on a utility scale, the eng
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