what temp was your hot water solar panel today (or anyday)?

baby fish

HI, I'm wondering what temp can I expect my solar panels on roof to reach??

Had a problem with them, max temp they reached since they were installed was about 65 degrees, thats since end of last year .

Had plumber look at them again and they seem to be better now and reached 90 something degrees today, water in bottom of tank was heated to something like 40 or 50 degrees.

panels are facing south and it was very sunny all day today. They are flat panels and are supposed to go up to 120 degrees max I think, so should they have reached this today? , is 90 degrees good?

paddy147

My solar system and tank is set to 65 degrees C.Constant hot water 24/7.:)

baby fish

Thanks for that info:), my system is set to something like that too, 65 degrees , so the water shouldn't get too hot,

but my problem was the panels on the roof weren't absorbing the suns heat, they were barely getting the water to 35 or 40 degrees in the cylinder!!!! :mad:

Can read the panel temp on the little screen and it never went over 70 until today it reached 90 and got the water to 40 or 50.

By the way what are the panels in the picture called, one panel will heat what size cylinder? They look very small compared to mine but are very good??

paddy147

baby fish wrote: »

Thanks for that info:), my system is set to something like that too, 65 degrees , so the water shouldn't get too hot,

but my problem was the panels on the roof weren't absorbing the suns heat, they were barely getting the water to 35 or 40 degrees in the cylinder!!!! :mad:

Can read the panel temp on the little screen and it never went over 70 until today it reached 90 and got the water to 40 or 50.

By the way what are the panels in the picture called, one panel will heat what size cylinder? They look very small compared to mine but are very good??

Its an 8 foot panel,weights a mere 8 kilos and will supply a 300 litre tank and family of around 5-6.

Have had the system in over a year now,and its been absolutely faultless and great to use.:)

baby fish

Do you know who makes them?

paddy147

baby fish wrote: »

Do you know who makes them?

Name is in the 2nd pic.;)

The system was installed in my house by LVP.

ccsolar

Hi
Have you a solid fuel back boiler installed,?
Check for thermosiphining ...
The back boiler could be draining the heat from your tank.
Cc

baby fish

ccsolar wrote: »

Hi
Have you a solid fuel back boiler installed,?
Check for thermosiphining ...
The back boiler could be draining the heat from your tank.
Cc

thanks:)

but no its just straight forward - from the panels through the bottom of the coil and back to the panels. They seems to be working better since there was a new pump installed a few weeks ago, I'm no longer trying to locate the problem, I think!
(if there still is a problem, I'll leave that to the plumber;) )

I suppose at the moment I just need to establish what temp can I expect the panels on the roof to reach on a very sunny day with no clouds, there was a strong sun shinning on my panels(3 flat panels) all day yesterday, is 90 degrees good? or should it be higher.

If somebody can post the max temp their panels reached ever ( you will need a thermostat on the actual panels to read this), I can then compare to mine, if mine cant reach high temp on a sunny day then I have no chance on a dull day.

brophis

One thing to note is that the hotter the water going into the panels the higher the temperature will be. This means that the temperature at the panels will rise as the day goes on as the water in the tank gets hotter.

The panels at my girlfriends hit bout 90 the other day too

baby fish

[QUOTE The panels at my girlfriends hit bout 90 the other day too [/QUOTE]


seems mine might be working properly at last :D

thanks for that

JohnnieK

paddy147 wrote: »

Its an 8 foot panel,weights a mere 8 kilos and will supply a 300 litre tank and family of around 5-6.

Have had the system in over a year now,and its been absolutely faultless and great to use.:)

Did you ever clock the energy usage of the system paddy?

paddy147

JohnnieK wrote: »

Did you ever clock the energy usage of the system paddy?

Havent got around to it yet,but my bi-monthly leccy bills have only gone up a very slight bit,but that is also due to having a rather large Discuss fish tank and all the equipment on 24/7 too.;)

Must get around to having a look sometime soon.