Search found 68 results

by Stephen
24/06/14, 16:49
Forum : New transport: innovations, engines, pollution, technologies, policies, organization ...
Subject : Double carbon battery
answers: 7
views: 7262

In general by default it is 50%…
by Stephen
24/06/14, 12:34
Forum : New transport: innovations, engines, pollution, technologies, policies, organization ...
Subject : Double carbon battery
answers: 7
views: 7262

raymon wrote:You seem very pessimistic for example they talk about 3000 cycles if we really only get 1500 it will be very good and the same for the other parameters.

Good lead batteries already have this longevity, or even more ... and LiFePO4 do much better!
by Stephen
23/06/14, 13:21
Forum : Renewable energy: solar power
Subject : Photovoltaic Battery Park Board
answers: 8
views: 5517

No, this is not a prejudice, just an incomplete statement. (…) 2) if you are outside the standard, also specify: I am not supposed to know that you are still living as in 1930! That, not a prejudice?!? I prefer to laugh about it… In fact you're right, it's much worse !!! So according to you, the lifestyle of a ...
by Stephen
23/06/14, 00:34
Forum : Renewable energy: solar power
Subject : Photovoltaic Battery Park Board
answers: 8
views: 5517

Then, indeed, even with 4000 Wp, it is generally necessary to turn to other sources of complement (.…) Generator set for peaks and large occasional consos: welding station, drilling machine, washing machine (unless you prefer to wait to wash your shirts)) It smacks of prejudice ...
by Stephen
22/06/14, 00:47
Forum : Renewable energy: solar power
Subject : Photovoltaic Battery Park Board
answers: 8
views: 5517

Hi Jean-Christophe. Your project is not small, and if someone here, just reading your post, can give you the battery capacity you need, then you might as well classify it as a charlatan! What I mean is that it doesn't sound "fishy". The only way to get back ...
by Stephen
25/04/14, 14:36
Forum : Hydraulic, wind, geothermal, marine energy, biogas ...
Subject : Makani Power: wind flying glider
answers: 18
views: 22016

Probable hypothesis, inspired by the fact that a current racing sailboat is able to sail much faster than the wind at optimal speeds (from beam to broad reach): why not imagine that turning in circles on a trajectory necessarily always across to true wind (because it is ...
by Stephen
16/04/14, 08:10
Forum : Company and Philosophy
Subject : Albert Jacquard, society and intelligence. Tribute!
answers: 11
views: 12592

Thank you Christophe for these reminders ;-)
The great sages will unfortunately never be those who will have the power to guide the rules of our society. They swim against the tide of the flow of money ...
by Stephen
15/04/14, 08:42
Forum : Renewable energy: solar power
Subject : Isolated site: shed on the side of Aix en Provence
answers: 2
views: 4262

Frankly, with the rare exception that I have never seen before, the kits are pure scams !!! Never adapted to your needs which are by definition unique, and if you have fun detailing them (I have done it often) you will find that the price of the kit is often much higher than the sum of the prices of ...
by Stephen
30/03/14, 21:59
Forum : Renewable energy: solar power
Subject : Power supply for yurt
answers: 41
views: 29355

I am going to look at the battery file qd I will have a little time, I also have the possibility of recovering used heavyweight batteries but still op used lead batteries are breakthrough baskets, which waste enormous energy. .. it just works on a moving vehicle ...
by Stephen
29/03/14, 11:48
Forum : Renewable energy: solar power
Subject : Solar electricity for watering system of the vegetable patch.
answers: 11
views: 11056

And I am not sure that a pump accepts a completely random and variable power supply, in voltage as in intensity. Fault !! Mea culpa… it does exist. In these systems there is a regulation or stabilization of the voltage and therefore the possibility of completely dispensing with storage ...

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