Here's the extent of my solar experience... You've probably seen these before. These black strips are 20 feet long. One is 4 feet wide, there other two are 2 feet wide.. They have tiny tubes that water flows thru. My pool pump has a diverter valve so when the sun is pounding on it, I can send water out to the solar palnels. The water that returns is around 10 degrees warmer in direct sunlight at a flow rate of 10 gallons per minute. These are measured numbers, not guesses...
That's 600 gallons raised 10 degrees in one hour.
Since the British Thermal Unit, BTU, equals the amount of energy that is needed to raise the temperature of one pound of water by one degree Farenheit then you would need 8 BTU's to raise one gallon one degree as one gallon is the equivalent of eight pounds of water.
8 btu per gallon per degree
8 btu x 600 gallons x 10 degrees = 48,000 btus per hourThat's a FREE 48,000 btu's per hour of solar heating!!!
Not bad in my book
Helps heat my pool quite nicely. One summer it hit 94 degrees.. Yes the pool did
SO - what I would like to do is use this to more advantage. I've thought about putting one on my roof to preheat my temper tank (that I use in the winter for coal).. If successful, I would cut electric for DHW by $30 a month for 5 months for savings of $150 for that year. Total investment around $300 So payback on this is around 2 years... Hot dam lol time to get busy, next year