On the other hand a friend in St Petersburg, FL. uses a 7,500 BTU ac in his S-10 Pickup (About a 400 watt load) and runs it from a 1,000 Watt 110v. inverter... Your 25000 to 30000 btu/hr are two to two and a half tons (Same as HP or similar to Kw. ) and that is as much a a small house. I used a 42,000 btu/hr a-cond to cool a 2,240 sq ft manufactured home in Florida, and it ran 2/3 s of the time. And now I am using 7,500 btu to cool 900 sq ft with better insulation...
Dennis Lee Miles (*[email protected] <[email protected]>)* * Founder: **EV Tech. Institute Inc.* *Phone #* *(863) 944-9913 (12 noon to 12 midnight Eastern US Time)* *Educating yourself, does not mean you were **stupid; it means, you are intelligent enough, **to know, that there is plenty left to learn!* * You Tube Video link: http://youtu.be/T-FVjMRVLss <http://youtu.be/T-FVjMRVLss> * On Sat, Aug 2, 2014 at 12:22 AM, EVDL Administrator via EV < [email protected]> wrote: > On 1 Aug 2014 at 13:17, Ben Goren via EV wrote: > > > it probably also makes sense to get an air conditioner that runs [on] > > the 12V system so it, too, can run when the car is plugged [in] ... > > I'm not so sure. I've read that a typical automotive aircon moves around > 25000 to 30000 btu/hr. That can take a fair bit of power and energy. > > For example, I just found (online) a 24500 btu/hr LG room aircon that uses > 12.7 amps at 230 volts (2.9kW assuming unity power factor). A comparably > efficient unit running on 12.7 volts would require 230 amps. That's a > pretty sizable long-term load for your 12v system. > > To look at it another way, you'd need twelve fully charged 90ah lithium > cells to run that aircon for an hour. Even at 50% duty cycle, you'd still > need eight 60ah cells. > > The energy usage isn't so much of a problem if you're just talking about > cooling the car while it's parked and charging, though don't forget that > any > power the aircon uses isn't available for charging. However, you'd still > have to have a pretty robust 12v system to power it. > > I think you'd be better off with an aircon powered by the main traction > pack > voltage. At least the current required would be more manageable. > > David Roden - Akron, Ohio, USA > EVDL Administrator > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > EVDL Information: http://www.evdl.org/help/ > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > Note: mail sent to "evpost" and "etpost" addresses will not > reach me. To send a private message, please obtain my > email address from the webpage http://www.evdl.org/help/ . > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140802/fb6f68fc/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
