Low cost passive solar innovation for green energy solution for hot water production for small scale use on residence and communities.

Beautiful orrery(solar system model) avaiable in : www.orrerystore.com .I've been experimenting with a small scale solar power system. Right now, I am just powering a battery charger for D, C, AAA, AA and 9volt batteries. So far its been very easy to work with. I will do some more experimenting with lighting and other 12 volt appliances and post the results.

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www.solarhotwaterstore.com – should you choose evacuated tube solar collectors or flat plate solar collectors for your DIY solar hot water or solar heating project? Discover the simple answer. And, to learn more, visit www.solarhotwaterstore.com

*** NEW *** Arduino code available at : code.google.com A short video of my garden and operation of the DIY solar water heater for the hot tub. About two years ago I bought a Lay-Z-spa portable hot tub. The only problem is, its has no insulation and can be expensive to run. Luckily I have a south facing garden which is quite a suntrap. Over the winter I built a solar hot water collector from 125 metres of thin walled black UV stable PVC irrigation pipe. I used tanalised timber for the frame and glazed it with UV stable corrugated clear PVC. The controller is an Arduino Duemilanove running two LM335Z temperature sensors and the pump is an old Grundfos Selectric central heating pump controlled by a 5v relay. The custom software provides both freeze and overheat protection. Thanks to Neil from reuk.co.uk for his advice and input. *** Update 09/11/2011 *** Well, we are at the end of the summer here in the UK.(Such as it was) I only designed it to run from Early April to early September and I’ve been doing some rough calculations to work out my electricity saving. Feel free to check my maths. The pump has ran for ~400 hours. It only pumps when the temperature in the coil is 4 degress higher than that of the pool and it pumps 3 litres a minute. So: 60 minutes x 3 litres x 400 hours means over the summer its heated 72000 litres of water If it take 4180 joules of energy to heat 1 litre of water by one degree it takes 16720 joules to heat it by 4 degrees. 16720 joules x 72000 …

I really need to buy some good outdoor 10 gauge fine stranded wire. My four large solar panels would only put out 20 watts today. I guess because of the small wire I used.

This is my small 3×4 inch cell panels that I have hooked up to the GTI. I don’t have my 5×5 inch cell panels hooked up to the GTI. The 5×5 cell panels are still charging my Optima Yellow top batteries and converting DC to AC Power with my 7000 watt Modified sine Aims inverter.

www.solarcells101.com This was a test of one of my DIY Solar Panels to see what a Mirror would do not to Bad at all you can find mirror cheap a yard sales and some time walmart extra amps is great and this is cheap way to do it Thanks, David www.solarcells101.com

I’ve been experimenting with a small scale solar power system. Right now, I am just powering a battery charger for D, C, AAA, AA and 9volt batteries. So far its been very easy to work with. I will do some more experimenting with lighting and other 12 volt appliances and post the results.

www.solarcells101.com This is 5 watt B-grade solar panel test , they have one cracked solar cell they are great for the DIY solar customers,,