[Amel Yacht Owners] Re: Solar panels for SM


hanspeter baettig
 

Hi Paul
whow you can get 8.3 A continious during lets say 10 h in Greek with the Emek Solar installation. This is your calculation with 2.05 KWh/ day. and how you can dived kwh/day ??? Hours/day??? And pls its not 450 W our solar panel! its 450 PW. ( Peak Watt). Googel it and then maybe you understand
kind regards
Hanspeter
Tamango 2 SM 16
Von meinem iPhone gesendet

Am 01.07.2016 um 19:22 schrieb osterberg.paul.l@... [amelyachtowners] <amelyachtowners@...>:

 

Hello Ian and Judy
We have 450 W fitted by Emek. On Average in June we got 2.05 KWh/day, which I convert to about 83 Ah a day. We have been in the Ionian the whole of June. The lowest reading was 0,97 KWh or 39 Ah. A rather rainy day but some spell of sunshine. Max was 116 Ah
Ww also have 200 W on the rail but they more often come into shadow. They gave on average in June 16 Ah. Peak 23 Ah, lowest was 9 Ah
Paul on SYKerpa SM 259


Paul Osterberg
 

Hanspeter
It looks as you have very little faith in my knowledge about electricity, and you are probably right Physics and Electricity etc, was not a very strong point for me during my studies, but maybe I got it right this time anyway. 

Now at 09:45 my Emek solapanels give me + 8 A, and when the sun are a little bit higher we rather often get + 12 A and not unusually 14 A for a while.
My Victron MPPT Control gives me more data than I need, but it gives peek watt for the day, and and June they where often above 320 w with and average peek reading of 359 W. It also give total stored kwh for the day which for June was on average 2.05 kwh, given that the Victron measures correctly.
kwh is often the units you are billed at from the electricity company, in Sweden you are billed for how many kwh you consume/month, but the price could be set daily, then they calculate how many kwh/day you consume. In my case the Victron calculate how many kwh going into the battery/day.
Watt is calculated by the formula P=UxI so say 25 volt at average 8.3 A, gives P=207w, if we have this average conditions for 10 h, we get 2,07 Kwh. What's the problem ?
We run 2 fridges and one freezer, all lamps are led, usually my computer and instruments are on 24h, in the morning our batteries are around 90% according to the Victron BMV 700, and well before the sun goes down our Victron reeds 100%, this is when we are at anchor. Obvious the solar panels put in substantial amount of Energy into my batteries

Paul on S/Y Kerpa SM#259


ianjenkins1946 <ianjudyjenkins@hotmail.com>
 

Hi Paul,     Thanks for this. I think we may have seen you in Vlikho recently, but didn't have time to come over and chat.
Next time !

Ian and Judy, Pen Azen, SM 302, Cleopatra.


On 1 Jul 2016, at 20:40, 'hanspeter.baettig@...' hanspeter.baettig@... [amelyachtowners] <amelyachtowners@...> wrote:

Hi Paul
whow you can get 8.3 A continious during lets say 10 h in Greek with the Emek Solar installation. This is your calculation with 2.05 KWh/ day. and how you can dived kwh/day ??? Hours/day??? And pls its not 450 W our solar panel! its 450 PW. ( Peak Watt). Googel it and then maybe you understand
kind regards
Hanspeter
Tamango 2 SM 16
Von meinem iPhone gesendet

Am 01.07.2016 um 19:22 schrieb osterberg.paul.l@... [amelyachtowners] <amelyachtowners@...>:

 

Hello Ian and Judy
We have 450 W fitted by Emek. On Average in June we got 2.05 KWh/day, which I convert to about 83 Ah a day. We have been in the Ionian the whole of June. The lowest reading was 0,97 KWh or 39 Ah. A rather rainy day but some spell of sunshine. Max was 116 Ah
Ww also have 200 W on the rail but they more often come into shadow. They gave on average in June 16 Ah. Peak 23 Ah, lowest was 9 Ah
Paul on SYKerpa SM 259


Alexandre Uster von Baar
 

Good morning Paul,

Could you please tell me which model of Victron Mppt regulators and Victron MPPT Control units you have?

Sincerely, Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico




--------------------------------------------

On Sat, 7/2/16, osterberg.paul.l@gmail.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: [Amel Yacht Owners] Re: Solar panels for SM
To: amelyachtowners@yahoogroups.com
Date: Saturday, July 2, 2016, 9:02 AM


 









Barry and Penny!I'm fare from an
expert on solar panelsBut hear is my
thought's so fare.We have three 150 w panels
in serie on the Arc, they are Turkish origin, and so fare we
are very pleased with them. The two on the rail are from
Sunbeam (Germany I believe) light weight panels also in
serie, they give compared with the one on the arc fare less,
they give on average 15% of my total solar energy but
nominal it should give 31 % if everything equal, but they
come more often in the shadow from the mizzen boom, We have
two Victron Mppt regulators, and two Victron MPPT Control
units, and I have the feeling that the MPPT for the rail
panels "reads" what's coming in from the
larger solar system and reduce out puts. I have the same
issue with the two Battery charger I have, if I run them
both when on shore power at the same time the smaller
charger does not contribute after a few minutes. I guess it
could be the same with more than one solar charger,
especially if the charge rate for my batteries are high say
+95%, but that is not a big deal, they looks giving OK when
battery around 90%.Our thoughts was to have two
light weight panels on our Bimin in serie with the rail
panels, but the canvas man told us it's not a good idea,
as they will chafe, "destroy" they shape of the
bimin and that it will collect moist between the panels and
the canvas. So we decided not to put them there, but I'm
considering to put them there anyway, to put chafe
protection, the shape I'm less concerned about, then we
have the issue with moister, but our Bimini is not very
large and to replace it now and then is not a major
cost.Paul on S/Y Kerpa SM#259 en route to
Sicily
 











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Paul Osterberg
 

Hello Alexandre
We have an Victron MPPT 150/35 for the 450 w on the Arc
and 100/30 for the rail mounted panels
The controller there are only one model called MPPT control it's rather new been out less than a year I believe
Paul on S/Y Kerpa SAM#259


Alexandre Uster von Baar
 

Thanks Paul!



--------------------------------------------

On Sat, 7/2/16, osterberg.paul.l@gmail.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: Re: [Amel Yacht Owners] Re: Solar panels for SM
To: amelyachtowners@yahoogroups.com
Date: Saturday, July 2, 2016, 11:17 AM


 









Hello AlexandreWe have an Victron MPPT
150/35 for the 450 w on the Arcand 100/30 for the
rail mounted panelsThe controller there are only
one model called MPPT control it's rather new been out
less than a year I believePaul on S/Y Kerpa
SAM#259










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