Anyone who has a home heat pump can check the register temperature with a thermometer. You will find if the heat strips are not energized the maximum temperature is about 90 F with an outside air temperature of about 68 F. Give it a try. Then tell me I am incorrect. In addition, the current building codes require a 15% fresh air intake to the return air. The old codes allowed a closed recirculating system. This does not help the efficiency but improves the air quality in the structure.
________________________________ From: EV <ev-boun...@lists.evdl.org> on behalf of EVDL Administrator via EV <ev@lists.evdl.org> Sent: Wednesday, November 29, 2017 10:13 PM To: Electric Vehicle Discussion List Cc: EVDL Administrator Subject: Re: [EVDL] Heat pump vs resistive Heater (never buy another AC unit) On 29 Nov 2017 at 18:14, ROBERT via EV wrote: > A heat pump outputs a register temperature of approximately 90 F. This > low a temperature blowing across your skin is not comfortable to a lot > a people. I think this is less true of recent heat pumps. I'd like to hear from someone who owns an EV with a heat pump -- how warm does the air from the vents feel in the winter? I think that many or most older heat pumps did have this annoyance. It's not an EV, but I knew someone who had a late-1990s GSHP (Waterfurnace brand) at home. The heating air from the vents always felt cool to me, meaning that it was below body temperature. Ninety deg F would be quite believeable. That's definitely not the case with my Mitsubishi mini-split from 2013. Although I haven't measured its outlet temperature in heating mode, most of the heating seasons it feels quite warm, almost hot. So it has to be well above body temperature. As the outdoor temperature falls, its outlet temperature declines too. However, it stays noticeably above body temperature down to an outdoor temperature of around -15 deg C. Thus I see no reason that an EV heat pump would have to produce air that feels cool under most conditions. For the times that it did, I'd expect it to have auxiliary resistive heat. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ [http://www.evdl.org/images/evdl.jpg]<http://www.evdl.org/help/> EVDL Subscription Information and Help<http://www.evdl.org/help/> www.evdl.org About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by EV enthusiast Clyde Visser, is an active and vital source of information and help for people ... = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 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/ . [http://www.evdl.org/images/evdl.jpg]<http://www.evdl.org/help/> EVDL Subscription Information and Help<http://www.evdl.org/help/> www.evdl.org About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by EV enthusiast Clyde Visser, is an active and vital source of information and help for people ... = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub [http://www.evdl.org/images/evdl.jpg]<http://www.evdl.org/help/index.html#usub> EVDL Subscription Information and Help<http://www.evdl.org/help/index.html#usub> www.evdl.org About the EVDL: The Electric Vehicle Discussion List, founded in 1991 by EV enthusiast Clyde Visser, is an active and vital source of information and help for people ... http://lists.evdl.org/listinfo.cgi/ev-evdl.org EV -- Electric Vehicle Discussion List - lists.evdl.org ...<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> lists.evdl.org The Electric Vehicle Discussion List is a forum for discussing the current state of the art and future direction of electric vehicles (EVs). We define an EV as a ... Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) [https://s1.yimg.com/dh/ap/default/130909/y_200_a.png]<http://groups.yahoo.com/group/NEDRA> Yahoo! Groups<http://groups.yahoo.com/group/NEDRA> groups.yahoo.com / -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20171130/6b161376/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
