Hi Dan and Wrenches,
Kirk Bailey asked me to submit this on his behalf.
-------------------------
One option for PV-direct air/water heating controllers is CyboEnergy (www.cyboenergy.com). They have inverter/controllers for either off-grid air/water heating (CI-Mini-1200H series), or hybrid on/off grid units (CIM-1200A/H). Both have per-module MPPT inputs.
Cheers,
Kirk Bailey, Abundant Solar, LLC.
Bill Loesch wrote at 02:11 AM 3/10/2016:
Dan & Bill,
If mini-split equipment is what you are using/considering you might want to look further at
www.hotspotenergy.com
John Williams who runs the place was at the AHR show in Orlando earlier this year and has DC and solar HVAC equipment.
Hope it helps,
Bill Loesch Solar 1 - Saint Louis Solar 314 631 1094On 3/9/2016 9:40 PM, William Dorsett wrote:
Dan, I think it is Gree that has a PV direct mini-split heat pump for both heating and air conditioning. It may have run on two 250 watt modules. When in non-PV mode, I believe the AC is rectified to DC and run through an inverter. And there are now a few others as well .possibly Fujitsu.
Bill Dorsett
Manhattan, KS
From: RE-wrenches [ mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dan Fink
Sent: Wednesday, March 09, 2016 8:07 PM
To: RE-wrenches
Subject: [RE-wrenches] PV-direct air heating?
I have an interesting question I haven't run into before, using existing equipment, some in place, some just waiting for an install.
Has anyone here ever done an MPPT PV-direct install to DC air heaters?
Advanced Energy used to have a PV-direct MPPT water heating controller, but the residential division of their company no longer exists. We are looking at 1200-1500 watts of PV.
How would one program a Midnite Classic (for example) to most efficiently connect PV to DC heating elements without a battery bank/diversion load setup, whether for water or air?
This one's new to me; I've never tried PV direct heating before.
Thanks in advance for any input.
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
