solar water heater simple DIY project
a short video showing the small solar water heater i designed a couple of days ago. it consists of 125 feet of 1/2 inch diameter black tubing (cost ...
a short video showing the small solar water heater i designed a couple of days ago. it consists of 125 feet of 1/2 inch diameter black tubing (cost approx .00), 4 connector pieces (to connect the various pieces together and to connect it to the house (cost approx. .00)), and finally the ‘y connector’ so i could have the garden hose hooked up at the same time (cost approx .00). all purchased from home depot. total cost was approx. .00. all i did was coil 100 feet of the hose and attach it to a piece of plywood. after 30 minutes of sun the water temperature is about 130-133 degrees and after 60 to 90 minutes it can reach 150 degrees. the coil can hold 2+gallons of water at a time. if you drain and refill several times throughout the day you could easity get 10-15 gallons of hot water a day. i may expand the size of the system. (they sell a 500 foot roll of hose for .00. that would be about 10 gallons of water at a time)
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- Diy Solar Water Heater. | Pakistan Information Network
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This system will heat up a little over 2 gallons at a time.
Well if you are smart you can buy 5000ft of tubing and have hot water for a long as time….He is just showing us how to build, you can always expand to suit your needs…If his 100 fett holds up 2 gallons and you need more just multiply that by the gallons you might need….My buddy has 1500 feet of that tubbing, so i guess he has 30 gallons or so…How long will it take for that water to be used up, you now gonna run just hot water but adjust to your needs
Awesome Data and work.
have you thought of using a 50 gallon plastic barrel as a storage tank, coiling your tubing on a cone so that convection would create flow and heating 52 gallons?
Thats the ticket rolled up hose piped into a water heater,stripped & painted black.(maybe incased in shower doors?)
Have you ever thought about enclosing it in an insulated box? It would get a lot hotter.
I made a solar water heater for my house, most all of my hot water comes from it. It gets similar temps (135F or 55C)as you do, (but it did cost more). I made mine from PVC (much cheaper than copper)
Here is a video about it:
just go to youtube(dot)com(slash)watch?v= KOY49bH7Ocg
YOu could tie it to your Home Water Heater, install an intermittent timer onto a pump that kicks on every 20 mins or so and let it fill your big tank all day long. Insulate the Big Tank Very Well thou.
Great idea. You more then likely already know it, but many watching this video might not even consider. You cannot consume water out of black plastic hose as it leaches all sorts of toxics not for human consumption as does standard garden hoses. I only learned that after living in my motor home and had to purchase the white hoses for drinking water. Would not want someone to get sick, we battle enough! Good idea with lots of possible applications though! Thanks.
it would probably get to hot (at least in the summer months). the tubing is only rated to 180 degrees.
thanks for the comment. that is a very good idea
Good point. It is true that some black plastic hose and garden hoses etc… are not safe to drink from. Many types, however, are made to be perfectly safe to use for ‘drinking water’. i used the ’safe’ type.
Even if this is not safe for house hold drinking. Which to be honest who drinks from the Hot Tap anyhow.? Bu this would be Ideal for underfloor heating. Simply have the water pumped round on a timer. ever 35-30 mins cycle the flow. Simple.
that is awsome im gonna use that to heat the hot tub i built.
oh ya how long does it take for the water to heat up in the tube or can you run it nonstop without the water getting cold
the water will be cold if you run it non-stop. it takes about 30 mins to reach 130 degrees in summer time (in desert climate). the highest water temp. i achieved was 157 degrees when i let the water sit in the tube for 4 hours on a hot (100 degree) sunny summer day.
so do you have like a thermostate system set up or do you run out there every 30 mins and turn it on
in a typically day i will drain the hot water heater 2 or 3 times. no thermostat or intermittent timer connected (yet). i like the idea that ‘kchedville’ wrote in the comments below. would run the water pump and timer off of solar panel.
I know a few people who have done this with only a few changes. Black polly tubing 300ft running to a conventional hot water tank which is higher than the hose letting the hotter water go to the tank which has a pressure relief valve built into the tank. Doing this kept the water in the hot water tank warmer longer and you ran out less. Also if the water got too hot, the pressure valves would let off steam. If you have extra solar/ wind power it can be sent to hot water tank element.
Build an insulated case to put this in and paint the entire inside surface flat black and put a polycarbonate (like plexiglass but heat resistant) put the coil of tubing in it making sure that there is a small space between the coils so the hot air in the box can reach all surfaces of the tubing and this unit will double in heat efficency and will have heat almost instantly because you will not loose any heat due to it being in the open air ..nice project,, stick it to the oil man !!
Nice. Im going to use a 1/2″ x 60′ copper tubing roll in a box on the roof and plumbed to the water heater 5′ directly below.
I was thinking more like 50 gallon tank inside the attic, connected directed to the pipe that comes from outside into the attic this is my case though, to the cold water + a splitter if I want just cold water. since im in FL its very hot! in the attic could reach 130 in no time
Now if i could only get the wife to use a clothes line instead of the Energy Eating Monster Clothes Dryer…..
Lets say you used a tank and a valve on a timer with this system how would you get the pressure up to come out of the faucet without the incoming water pushing it out?Could it strictly come from gravity of the tank being higher than the pipes?I sketched a cool design of my own but I just wondered about the pressure.
so the water cames out of the main you direct it into that tube it flows through it warms up and ends in your tank?
? I am thinking of doing this for my homes hot water, but can that black tubing handle temps over 140 deg. F ?
@stangtrax – the black tubing is rated up to 180 degrees (Fahrenheit)
I made one using Sprinkler tubing which was suppose to be good to high temps, inclosed 200 feet inside an insulated box with acrylic cover, installed in on the roof,, half hour later, the box filled with water,,,, the tubing did not hold up,,,, it bursted… redone it all using soft copper tubing,,, on a sunney day, my heater stays filled with 110 degree water from the sun…
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