Just attach a face mount A/C compressor to a aluminum plate attach to the electric motor face plate. Install the same size diameter pulley on the motor pilot shaft that is normally use on a engine. The pulley on the electric clutch is normally smaller. This keeps the rpm high during idling. Idle the motor by installing a 2nd 5k pot preset to about 300 to 400 rpm. Use a on dash switch label IDLE ON OFF that is transfer to the accelerator circuit when you turn ON the IDLE switch.
Another advantage using a IDLE switch even if you do not have the A/C on, is when you come to a quick stop and go, leave the IDLE switch ON which prevents starting up surge from a dead stop. Instead of 500 amp start up surge with out the IDLE, it is only 150 to 200 amps with the IDLE ON or PRE IDLE just before you press the accelerator peddle. I pick up all the A/C equipment from a local radiator shop, which includes the condenser, compressor, compressor clutch, expansion tank with a filter insert, A/C core and hoses. The A/C core is normally sandwich with the heater core which uses the heater fan for the air input. The air input is normally coming from the outside air for the heating cycle. The engine coolant temperature may get up to 250 F, so the outside air is use to temper the input air temperature. In A/C systems, there is a damper that blocks the outside air and recirculates the cab air. I modified this damper control to also circulate the heating air. Only need the heater turn up to 600 watts which works good here in Montana. 15 minutes of run time will bring the temperature up to 80 F. in the heating cycle or down to 70 degrees from 80 degrees ambient in the A/C cycle. Roland ----- Original Message ----- From: Ben Goren via EV<mailto:ev@lists.evdl.org> To: Electric Vehicle Discussion List<mailto:ev@lists.evdl.org> Sent: Wednesday, June 10, 2015 3:44 PM Subject: [EVDL] DIY EV air conditioning? 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://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/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/20150610/a5b3cc45/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)
