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Navitron Renewable Energy and Sustainability Forum > SOLAR THERMAL > Solar (and other) Data Logs > Solar cylinder temperatures
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Author Topic: Solar cylinder temperatures  (Read 24602 times)
David
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« Reply #180 on: February 17, 2008, 11:26:26 AM »
Quote from: Paulh_Boats on February 16, 2008, 09:43:16 PM
308Wp of PV gave a max of 162 Watts into the grid.

That is very impressive for a winter day.
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O MidKnight
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« Reply #181 on: February 17, 2008, 05:39:08 PM »
This system only gets the sun after 0930 hours in the summer and 1230 hours in the winter

1200 x 450mm non solar dedicated twin coil cylinder (slightly more capacity and slightly less efficient heat exchange). Panels facing due south and have a total flow and return pipe work of approximately 54 metres in 10mm copper tube. 20 vacuum tubes and some old flat plate panels situated on Salisbury Plain, Wiltshire

17/02 good sun

Start of solar gain temperature 22C Sensor 450mm from the bottom of cylinder

1 litres water drawn approx between start of solar gain and end of solar gain

End of solar gain temperature 40C

Sensor 200mm from top of cylinder start 40C finish 55C


 
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Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
Paulh_Boats
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« Reply #182 on: February 17, 2008, 06:17:34 PM »
David,

Yes its great for the middle of February. Today PV peak output was 174 Watts, generated 0.50 kWh by 12:07 but only 0.71 kWh total because the panels dont face south yet.

Tank went from 41C to 67C!
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O MidKnight
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« Reply #183 on: February 18, 2008, 05:30:37 PM »
This system only gets the sun after 0930 hours in the summer and 1230 hours in the winter

1200 x 450mm non solar dedicated twin coil cylinder (slightly more capacity and slightly less efficient heat exchange). Panels facing due south and have a total flow and return pipe work of approximately 54 metres in 10mm copper tube. 20 vacuum tubes and some old flat plate panels situated on Salisbury Plain, Wiltshire

18/02 goodish sun

Start of solar gain temperature 22C Sensor 450mm from the bottom of cylinder

1 litres water drawn approx between start of solar gain and end of solar gain

End of solar gain temperature 39C

Sensor 200mm from top of cylinder start 42C finish 52C

I will start posting under February/March etc  temperatures from now on. For newcomers, Paul`s monthly digest is the easier to follow.
« Last Edit: February 18, 2008, 05:36:02 PM by O MidKnight » Logged
Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
Ivan
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« Reply #184 on: February 20, 2008, 11:21:13 PM »
Shame we can't have an interactive graph. It would be nice to see the temperatures plotted, but too much hassle...
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wyleu
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« Reply #185 on: February 21, 2008, 09:27:31 AM »
I might have something along those lines soon...
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O MidKnight
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« Reply #186 on: February 21, 2008, 12:20:17 PM »
Good - The Great Data Professor is optimistic
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Solar heating - makes you feel good when you open the hot tap and when you look at your heating bill
Ivan
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« Reply #187 on: February 21, 2008, 10:38:53 PM »
Lord Wyleu,

We can host it/link it on the navitron website, if you are agreeable...
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