SOLAR HOT WATER with black garden hose Pondmaster 1200 gph

The pump does not need to be the 100 watt version. There are lower wattage pumps on the market. A good DC pump would work too. This is 50 gallons. Pondmaster Magnetic Drive Water Pump.

Category:

Science & Technology

Tags:

• SOLAR
• HOT
• WATER
• GREENPOWERSCIENCE
• Garden
• GREENHOUSE
• BAFFLES

[alpineicecompany]

Dan Some have made a comment about the heat gain from the 100 watt electric pump. They are in error. A 100 watt pump would only generate 314 BTU/hr. That would only elevated the 55 gal of water by 0.687 degrees F According to my calculations the surface area of the 55 gal drum would quickly disipated that minute amount of heat. As per your video This little operation created , 2967 BTU/hr

[GREENPOWERSCIENCE]

@alpineicecompany Thank you for the info:-) Also the pump is a magnetic driven impeller so there is an additional barrier from the motor and not the traditional friction.

[steveBB30]

If the tank were higher than the thermal collector wouldn't the water thermosyphon without needing the pump?

[MrAlvan100]

@truebassB Thank you.

[truebassB]

@MrAlvan100 The Black Matte reflects almost no sun light,the glossy radiates it away just like a mirror,so the Matte will make any surface hotter than one painted with Glossy paint as more sunlight will be collected in the surface to heat it. :)

You can see this in practice if you can find any Matte painted car under the sun with one other having the regular Glossy Paint.

[truebassB]

What about a water circulation system into the drum with one side of the tubing having some sort of radiator and being under a Fresnel lens? That sounds good,and it wont melt as it will be water cooled.

The only problem i can find is the efficiency and speed of heating the water

[MrAlvan100]

I wonder what the differance would be when useing a flat black oposed to gloss black paint?

[MrAlvan100]

This is the second vidio I've see of the Rojas home projects. I commend you on your elegence and simplicity of your systems. Keep up the good work!

[built2bfree]

Bet the trick is slow circulation to allow the heat to build in the hose but not so slow the drum loses heat...so wrapping the drum like you said. A temp gun and a lil tuning the flow rate and your golden!

[fritzkatz]

Seeking affordable 500' black garden hose as current flow is just above a trickle.. though exits into pool over 100°. Don't want larger figuring that will move TOO fast to pick up heat but wht the hell do I know? Pure DIY on hunch, no calculations or research (till seeing this - if you can call this research- when I googled "black garden hose"). BTB Throughout the mideast, even non-desert mideast, rooftops do have just fifty gallon drums painted black as usually their sole hot water source.

[fritzkatz]

Got 500' black plastic HomeDepotOnline $30. Laid on white concrete slab took forever to undo coils flat in big racetracks. 6000 gallon pool drawn into 1/2HP submersible pump (driven by small solar panels and inverter feeding/drawing from marine battery) sitting in swimming pool (remove before swimming just to be safe) and running from 9am to 4pm (when I get home and go in) get a four or five degree rise which is just enough to avoid Polar Bear Club status midwinter Florida..

[XxGreenExpoxX]

Thumbs up for big tits

[Sutoraida1975]

I don't know if this comment has already been made but how much hotter would the water be if the hose were covered with something clear and housed in something insulated? Another thing to consider is the winding of the hose. It's hard to explain so I'll have to say that the center of it would be like an 'S' so that both either end can go to the top or bottom of the 'box' it's in.