[ausev] A/C in an EV

[jefoy at mindspring.com]

For me, I would contact Sanden about their line of DC inverter scroll compressors. Assuming they offer something or can build something to operate from the full pack voltage (should not be difficult), use that with an underdash blower unit from Vintage Air or the OEM A/C blower unit if the vehicle was originally air conditioned. 

What you get is in my opinion, the best compromise between cooling and efficiency. The DC inverter compressors are demand based allowing them to run at reduced power when the demand is low (already cooled vehicle or cooler day). Using conventional refrigerant based systems eliminate the the need to transfer ice or dispose of melt water. 

Park in the shade and pre-cool while still on the charger and you have minimal impact on range. Even better if you can opportunity charge while at work you can pre-cool for the trip home as well.

For me, (if I ever get the project going) the commute is 12 miles so even with a nominal 50 mile range I can stand the reduction. Worst case is a trip to the airport  - 40 miles round trip. Maybe some solar cells to trickle the pack while I'm gone would help..

Jack

-----Original Message-----
>From: Claire Sorenson <csorenson1 at austin.rr.com>
>Sent: Jun 13, 2007 10:34 PM
>To: chris at ohmbre.org, 'AustinEV News Announcements and General Discussion' <ausev at austinev.org>
>Subject: Re: [ausev] A/C in an EV
>
>I saw that the company offers two lines of portable 12v coolers, those that
>use water for drier climates and those that use ice for more humid climates.
>If you don't have the space or the power they seem like a good alternative.
>They cost from  about $290 to $700.  If money is an issue, it is cheaper
>than a built in system.  Otherwise a built in system is probably a lot more
>effective for cooling.
>
>I have heard so many ideas about A/C for EV's.  I am curious what would be
>people's number one choice if money was not an issue.  Or if you wanted to
>factor in power, space, and money, what would be the number one choice out
>of everything that has been listed?
>
>
>CS Unlimited
>Claire Sorenson
>Ph: 512-689-5911
>Fax: 512-282-9942
> 
>
>-----Original Message-----
>From: ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On
>Behalf Of Christopher Robison
>Sent: Wednesday, June 13, 2007 9:02 PM
>To: ausev at austinev.org
>Subject: Re: [ausev] A/C in an EV
>
>On Wed, 2007-06-13 at 20:43 -0500, Claire Sorenson wrote:
>> ...
>> all out.  Meanwhile, even a few degress cooler is better than nothing.  
>> I found two more websites with 12 volt portable water coolers if 
>> anyone else wants a short term fix.  They are listed below:
>> 
>> http://www.swampy.net/hprices.html
>
>You may already know this, but be aware that this product line is a horse of
>a different color. These are evaporative coolers, or "swamp coolers" which
>are an enclosure-contained version of the patio mist idea. A true air
>conditioner and an icewater contraption both reduce humidity as they cool. A
>swamp cooler instead increases humidity. They can cool the air
>substantially, but work best when it's dry. At the same time, they'll also
>reduce the cooling effectiveness of your own perspiration to some degree.
>
>>  
>> http://www.kooleraire.com/
>
>Now *there* you go!  That's more like it. If you want to experiment with the
>icewater idea, here's a price that's actually fair.
>
>
>--
>Christopher Robison
>chris at ohmbre.org
>http://ohmbre.org          <-- 1999 Isuzu Hombre + Z2K + Warp13!
>
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