GJ at all :) wery smart work you have done! :)
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GJ at all :) wery smart work you have done! :)
Just a small update about revisions to the design;
In reading this you must remember that living where I do it is probably fair to say that for 300 days of the year the temperature is under 20° C and for the remaining days I rarely see > 30° C.
The original layout had just the rad and fan and pipework with a tiny res fitted at high level.
This was replaced with a large diameter (2 1/2") return pipe/res which worked somewhat better.
I ran the fan full time but at minimum speed but the cost of doing so was painful (inefficient fan controller)
So I added a programmable thermostatic controller to the fan circuit whereby I had the temperature hysteresis set to 4° above 20° C. With the fan on full I found that typically, as long as ambient temps remained below 20 the fan would run for about 10% of the time, on for 3 mins, off for almost half an hour. Once temps rose above 20° the fan would maintain water at ambient plus about 1° C
Not being happy with unnecessary switching I decided to fit a proper res in the hope that having a larger mass of water to be heated the switching of the fan would be less frequent and perhaps, at certain times of the year, the ambient temperature surrounding both rad and res would contribute to the cooling effect thus preventing the fan from running altogether.
Currently the time it takes to heat the water to 24° C is in the order of 6+ hours and the fan, running at full speed is most efficient at quickly reducing that back to 20°
Flow rate shared between 4 rigs currently is 17ltrs/min and as such provides a certain amount of circulation in the res which is induced with the view to adding to the cooling effect
Flow rate
http://img526.imageshack.us/img526/3...1208261642.jpg
Temperature controller
http://img715.imageshack.us/img715/7...1208261641.jpg
After being introduced to the MOAF do you want more???
OK, here it is; The MOAR
http://img100.imageshack.us/img100/9...1208261644.jpg
A 44 gallon rez ... nothing extreme about that :rolleyes:
:rofl: