navitron
 
Renewable Energy and Sustainability Forum
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Anyone wishing to register as a new member on the forum is strongly recommended to use a "proper" email address - following recent spam/hack attempts on the forum, all security is set to "high", and "disposable" email addresses like Gmail, Yahoo and Hotmail tend to be viewed with suspicion, and the application rejected if there is any doubt whatsoever
 
Recent Articles: Navitron Partners With Solax to Help Create A More Sustainable Future | Navitron Calls for Increased Carbon Footprint Reduction In Light of Earth Overshoot Day | A plea from The David School - Issue 18
   Home   Help Search Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Electric space heating off-grid  (Read 1509 times)
stephendv
Hero Member
*****
Offline Offline

Posts: 928



WWW
« on: November 14, 2013, 07:01:00 AM »

The chill is supposed to start setting in next week, so I've started leaving the air-air heatpump/air conditioner on over night, set at 21C.  Woke up this morning with a warm house and 7C outside- the hit on the batteries wasn't too bad.  Next week we'll see 3C, so will really get to test this out properly.





* Screen Shot 2013-11-14 at 07.57.21.png (28.39 KB, 1133x356 - viewed 358 times.)
Logged

http://www.casanogaldelasbrujas.com
2.8kW PV, SMA Sunny Island 5048, 5 PzS 700 battery bank, stinky diesel.
w0067814
Full Member
***
Offline Offline

Posts: 239


« Reply #1 on: November 14, 2013, 08:47:27 AM »

What is are vertical axis units?
Logged
billi
Global Moderator
Hero Member
*****
Offline Offline

Posts: 8921



WWW
« Reply #2 on: November 14, 2013, 08:53:48 AM »

state of charge Huh?
Logged

1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
stephendv
Hero Member
*****
Offline Offline

Posts: 928



WWW
« Reply #3 on: November 14, 2013, 09:35:33 AM »

That's the state of charge graph, 80% at 8am, which I think is acceptable _IF_ the next day is going to be sunny.
Logged

http://www.casanogaldelasbrujas.com
2.8kW PV, SMA Sunny Island 5048, 5 PzS 700 battery bank, stinky diesel.
stephendv
Hero Member
*****
Offline Offline

Posts: 928



WWW
« Reply #4 on: November 28, 2013, 06:10:38 AM »

-2 degrees this morning and had the air source heat pump running all night to keep the house at 20C.  Battery state of charge was 100% yesterday at 5pm and 82% this morning.  Below is the inverter power draw during the night, the 1kW spike on the right is the toaster Smiley


* Screen Shot 2013-11-28 at 07.03.18.jpg (116.51 KB, 3028x788 - viewed 245 times.)
Logged

http://www.casanogaldelasbrujas.com
2.8kW PV, SMA Sunny Island 5048, 5 PzS 700 battery bank, stinky diesel.
dtl
Sr. Member
****
Offline Offline

Posts: 345


« Reply #5 on: February 12, 2014, 02:24:57 PM »

Hi,

What type of air to air heat pump is it?

Thanks
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!