All serious heat pumps that have to work at or below freezing ambients also have a heating element to supply heat and avoid freezing up the unit. Many cars already have Airco with a large radiator in the grille to catch ambient air, this is typically to get rid of heat in summer to cool the cabin, but the radiator will work equally well to extract heat from the ambient air flowing through it, essentially all that is needed is to re-plumb the compressor so it can either pump heat into the cabin or extract heat from the cabin. Note that the radiator fan may need to come on when the A/C radiator gets too cold, not only when it gets too hot... in addition, it may be needed to add a (resistive) heater to the A/C circuit to avoid it freezes up when it needs to generate a lot of cabin heat in cold ambient temperatures.
Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info http://www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Robert Bruninga via EV Sent: Thursday, December 24, 2015 10:55 AM To: Electric Vehicle Discussion List Subject: [EVDL] EV Heatpump Retrofits All it takes to install a heatpump in an EV is to find a place for a cheap $89 window airconditioner turned backwards. I use Window AC units for heat in my kitchen, bathroom, and at times past in the hallway. I was astounded when I tried running one on a cheap $99 12v/120v modified sinewave inverter and it started right up. It ran with a load of about 650 watts. Now all you have to do is figure out where to put it in the EV. And that is not as much of a challenge as you might think, depending on your aesthetics. of course when you need it most, and the coldest eemperatures it wont be worth much and will freeze up. Bob, WB4aPR -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151224/4f69 fa7f/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
