You would need 12k BTU if you were cooling the whole cabin, but I'm talking about cooling individual passengers. With conduction, not convection. Whole different ballgame. The concept must have some merit, or seat heaters wouldn't be commonplace. Besides astronauts and pilots, cooled seats and/or vests are also used for race car drivers.
Chris On Jun 11, 2015 10:03 AM, "Bill Dube" <[email protected]> wrote: > > You would need a lot of ice, hundreds of pounds, to provide the refrigeration needed. > 12,000 BTU/hr is the rating of a typical car air conditioning unit. This is literally equivalent to one ton (2000 lbs) of ice per day. > > "Hacking" some OEM EV air conditionaing, like from a Prius, is likely the best option. There are also inverter driven (VFD) home compressors that would likely work as well, but aren't as rugged as the OEM EV air conditioning compressors. > > I would investigate small, single phase input, three phase output, variable frequency drives (VFD) instead of building my own inverter from scratch. Like a TECO: > http://www.surpluscenter.com/Electric-Motors/3-Phase-Motors/Variable-Frequency-Drives/1-HP-TECO-VFD-115-VAC-1PH-INPUT-3PH-OUTPUT-11-3424.axd > Likely will run nicely from DC. Certainly cheap to try. > > Bill D. > > > > > On 6/11/2015 6:35 AM, Chris Tromley via EV wrote: >> >> If A/C demands aren't great, I've wondered if you could get away with a >> cooler, some ice packs, some water to carry the "cold" and a circulation >> pump to run the water through a tubing network installed in a seat cover. >> I know it sounds crude, but that's how NASA cools astronauts. Almost all >> the energy would come from the freezer that chills the ice packs. Could be >> inconvenient, but if the car is for commuting, just throw ice packs in the >> fridge at work. >> >> Chris >> On Jun 10, 2015 5:44 PM, "Ben Goren via EV" <[email protected]> wrote: >> >>> So, I can imagine all sorts of ways that one might run air conditioning in >>> an electric vehicle, but I'm sure others have actually tried and done >>> different ways and likely figured out the best general approach. >>> >>> Any of those others reading these words and care to point me in a good >>> direction? >>> >>> This'll be starting from scratch in a vehicle that never had air >>> conditioning in the first place but for which both factory and aftermarket >>> air conditioning systems are available that run off of a pulley on the ICE >>> engine. >>> >>> Thanks, >>> >>> b& >>> _______________________________________________ >>> 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/20150611/fbac298a/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) >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150612/8c0c81b4/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)
