Very good observation. Especially what is related to hydrogen. I always insisted, that photovoltaic is more or less fake idea. But on other hand I insisted that photovoltaic efficient solution for special cases. For EV is quite efficient solution since there is no need of expensive invertors, the energy volume would be simply increased by 5% improving travel distance and would serve as emergency power as well. For the house roof solution you have to spend lot of money for synchronization with el.grid. And that makes this idea more or less extravagant.

Ever wonder why electric cars have been around over 100yrs and in the year 2008 they are still in “developement”

ICE cooling fluid is near 200degF, way too hot for the batteries so the two loops must be isolated most of the time. The Volt must have a complex cooling system.

So brushed or brushless motors in these pumps?, probably brushed..

This is extremely picky but in engineering its all about the units. When describing power, lower case “m” denotes “milli”, while upper case “M” denotes “mega”.

So 6.5mW is equivalent to the electrical energy of an ant farting. Now 6.5 MW is serious power.

Sorry for the anal retentive comment….lol. (No DRE here…)
——————————————–

Lock your doors, I’m coming for you and I’m bringing a world of pain with me, just like Steven Seagal in…every Steven Seagal movie.

Cry havoc and let slip the dogs of war!
(…or I’ll remember to capitalize my ‘m’ next time)

Side note: Look for Steven next in Ruslan.

“A former Russian mobster named Ruslan, who is now a crime novelist, returns home and discovers his daughter is marrying his arch nemesis. His past also comes back to haunt him when his family is threatened. Hungry for justice, Ruslan returns to the life he once knew…with a vengeance.”
–quite a stretch for Mr. Seagal, can’t wait to see it release…at Blockbuster

Reasoning
The Tesla water pump draws 167 Watts for a 56KWh battery scaled down to a 16KWh battery, this equates to 47.7 Watts.

Using Logic
It takes considerably more power to overcome the friction of pushing coolant through hundreds, and hundreds, of small pipes in the battery, as opposed to having, one relatively large pipe to the cylinder heads, and one large pipe from the heads back to the radiator.

As someone else here pointed out, the Tesla water pump runs 24/7, if over 50% charge, so huge parasitic drains on the battery, 22% in Martin’s case.

LJGTVWOTR

NO plug, NO Sale.

“I suppose there won’t be a thermostat like on traditional cars. Usually, the water pump maintains a constant pressure against the thermostat which opens once the temperature is high enough.”

*** *** ***

Actually it’s a misconception that the t-stat opens and that’s all there is to it. Actually on any car the thermostat opens and closes many many times to regulate temperature regardless of whether or not you’re in Green Bay in winter, or Tampa in summer.

The BMS and TMS related to the Volt’s batt. pack will be probably be quite a bit more sophisticated. Since GM hasn’t said, we don’t know and again, the point I’ve been making for quite some time is that development of this vehicle is no small task! It seems that the variables are never ending and the targeted release is a matter of time.

Thanks for the mention of my motor ‘blurb’ of post # 72. I am not saying this is exactly what the Volt will use, just saying that I am familiar with this type of motor/pump system.

My experience is with pumping cooling and heating fluids to molding machines and plastics extrusion machines. The heat range I have worked with is as low as 50 degrees F and as high as 180 degrees F. I have worked with water as well as ethylene glycol systems.

As far as batteries go, I believe the problem is not that a battery gets too cold or too hot. It’s that the life of a battery lessens when charged “hot”. The Volt cooling system will most likely focus on pre-charge temperature control. A ‘cold’ battery should be fine and not require pre-heating. Perhaps the first 30 seconds of time during garage plug-in (post depletion point ~ ‘hot’) will be battery temp adjustment. Seems easy enough.

Thanks to Lyle and to all here for your comments. It’s a long way to the delivery of the Volt and it’s fun to talk about it beforehand.

=D~