FRESNEL LENS SOLAR HOT WATER, Heat Solar Pool Heater Solar Swimming Pool Heater

http://greenpowerscience.com/
This is a large Fresnel Lens focused on a copper tube with a 12 V pump (powered by two 6 watt solar panels) with water circulating through the unit. Water, seven gallons, was raised from 63 F to 106 F in one hour. It is not super efficient as heat is lost at the open top of the glass tank. This is designed to illustrate one method of solar heating a swilling pool with a Large Fresnel Lens.

TESTING HDD AQUA BLOCK.

Category:

Howto & Style

Tags:

• SOLAR
• POWER
• ALTERNATIVE
• ENERGY
• PV
• PANELS
• PHOTOVOLTAIC
• SUN
• FRESNEL
• LENS
• PARABOLIC
• REFLECTOR
• HDD
• WATER
• COOLER
• CPU
• LIQUID

[diamencik1]

where do U buy this big Magniffying Glass? Plese help me with the info ..

[GREENPOWERSCIENCE]

Check our website for a link.

[PsycoDirector]

what would happen if you were to send the ray through a second glass?  would it dolute it or strenghten it?

[GREENPOWERSCIENCE]

@PsycoDirector

Hi,

You would concentrate it to a smaller area. The power would not increase on heat a smaller area hotter.

[sjh7132]

106F - 63F = 43F degrees = 23C degrees

7 gals of water = 26 liters = 26 Kg (approx)

Specific heat of water = 4.2Kj/Kg*C

1 hour = 3600 seconds

Total energy = 2511 Kj in 3600 seconds

power = 697 watts.

I think it would take a while to heat a pool. The black hose probably puts out more power because it has more area. You can also just put black plastic in the pool.

[GREENPOWERSCIENCE]

Black plastic is a great idea. Winter is tough because the sun is lower, most pools do not get bottom direct sun. Cheap yardsale mirrors and plastic drop cloth with some weights. $30 pool heater:-)

[MrEnergyCzar]

This is brilliant Dan, brilliant....

[henderman2008]

I love your videos... very very interesting and informative... great work!! One question though... where can I buy the 'Copper Looping System' shown in the video (the heat exchanger piece). Is it something that could be built at home... or better to be purchased? I really appreciate your videos... A+!! Thanks!!

[AnUnlimitedRecord]

Hey Dan/wife,

Your efforts in promoting alternative energy technologies are admirable!

Just wondering what kind of videocamera you use?

[DarthMai]

This is good but you have to consider the scale that will form inside tubes...pool water has high alkalinity, high hardness, or salinity (for salted pools)...flow rate would be important to prevent any scale formation.

[CJLeTeff]

Dan, thanks for putting out the video. Question, would this not give better results if copper tubes were black as well as the back plate?

[savagenomore]

I'd like to see him stick his hand under that....

[olzzn]

You should cast a soild block with tubing inside for more effective surface area

[redrosejewelry]

Any ideas on how to adapt it to work for an above ground pool? Runs with a 3/4 hp Hayward pump and filter with standard 1 1/2" pvc fittings for the hoses. My main question is how to connect the larger fittings/hoses to the smaller copper.

[utsports]

thanks for your videos Ive learned a lot lots of good Idea's

[kcummings545]

Your video was helpful and a good start for us learning about fresnel lens.

How did you keep the water flowing? with a pump or did you siphon the water and somehow got it moving?

BTW, are you in TX? the birds in the background reminded me of birds I've heard in Texas.