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174 posts

Master Geek
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  Reply # 1359212 5-Aug-2015 11:51
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ok. I stand corrected.

1138 posts

Uber Geek
+1 received by user: 256


  Reply # 1359480 5-Aug-2015 15:33
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Have industrial UPSs operating on 48; 72; 102 V DC battteries. 1.5 to 3 Kw

Many who are in IT/Telco industry use something similar.

How about using those (invertor part inside in particular) with extra designed and built charging curcuit to utilise Li-Ion batteries instead of AGM?

Has anyone done that?

It is on my very long "can-do-want-to-have-no-time-yet" list

 
 
 
 


469 posts

Ultimate Geek
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  Reply # 1359769 6-Aug-2015 01:49
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greenbone:
Aredwood: 

And domestic solar in NZ makes little sense from an environmental point of view. As most generation is already renewable.


https://en.wikipedia.org/wiki/Energy_in_New_Zealand


For the point of this conversation, Geothermal is somewhat misleading in that graph, in that it measures gross energy, rather than its transformed and usable 'output' energy.  With a thermal efficiency rate of only 7-15% (due to working fluid temperatures that are much lower than oil/gas/coal power stations) the energy output of Geothermal is therefore more like 10 PJ pa, or approximately a quarter of Hydro's output.  By comparison, Hydro's mechanical efficiency is above 90%, while the thermal efficiency of newer CCGT (gas) power stations is upward of 50%.

1138 posts

Uber Geek
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  Reply # 1481090 29-Jan-2016 10:28
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freitasm:

 

First Australian installs happening now.

 

 

Update on my installation:

 

Still waiting for Vector to return me the contract [signed by them]. The only person who was in charge in Solar Team (Panels + Tesla Battery) has left and they said they are about to replace that position. Called few times - contact centre unable to comment. My emails asking about the status of the contract I've signed have not being returned.

 

A lot of people are keen and I have nothing to tell them yet :-( . Will wait and see.  Will keep you posted.

 

 


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