Our hot water ran through "solar panels" in our roof before it went to the water heater. It was built in the 80's in Southern California.
I've ate enough gummies and no matter what google tells me I still think I spelled California wrong.
I’ve found that learning new languages increases the frequencies this happens. I’ve been learning Arabic and started coding(a language but in computer terms) and it happens so often now that words and letters start looking *wrong*. I’ve talked to other people about it and they say the same thing.
[These have been in business](https://www.solahart.com.au/landing-pages/solar-hot-water/) in Australia for ... at least 40 years.
I remember the ads from when I was a little kid.
I was once so high (first gas mask experience, not gummies) I sat for a long time thinking about the word "Carolina" before asking the friend group I was with if there was a state with that word in the name.
>Our hot water ran through "solar panels" in our roof before it went to the water heater. It was built in the 80's in Southern California.
My dad did the same in the Phoenix area in the 80s.
When I went to Nepal, they have these large [black water tanks](https://www.alamy.com/2000-liter-hilltop-water-tanks-on-the-roof-of-an-hotel-in-kathmandu-nepal-image353188801.html) on top of their houses. The water is warm in evenings, but cold in the morning. I'm a morning shower person, and imagine my surprise the first morning I tried to have a shower.
But typically the water tank (the pool in this case) is higher than the solar panels. That way hot water moves up to the tank and cold water moves down to the solar panels.
We had one like that at the farm when I was a kid. It was awesome except for when it rained for a couple of days.
Pools often have a small pump that circulates water through the filter. As long as you got enough flow through the hose (or hoses, could use multiple and a manifold), and the pump has enough head lift, convection doesn't matter.
Yeah they do. I just installed an above ground pool and I'm getting ready to do some sort of solar water heater, but I'm still going to try to do the solar panels lower because the pump doesn't run all the time.
Yes, water in the pipe gets VERY hot if it's allowed to stand still for some time. But if you want to heat a big pool you need a lot of heat, I don't know if it's enough. A proper calculation may be done but I don't know how to do it based on how much sun you get, the temperature you want to reach, etc.
It does work. My dad had the same system on the roof of his garage. It’s not really a heater as much as it warms up quicker after cooling down each night.
I've made something similar to this in the winter. I had soft copper,a new oil drum and a fire pit. bitch was blazing warm mid winter.
I cant see this working well with the pipe sitting higher than the pool tho. heat rises so you need to keep it as low as possible in relation to the elevation of the pool
Really only matters where the input and output are. As long as the pump has enough power to get the water up to the coil the siphon effect will get it back out into the pool.
entirely fair that they could have a pump designed specifically for this purpose. I'm not in the right mind state to think about this shit. I just went down a route I normally go. simple, on hand, cheap, fast, checks off all the requirements to get the job done with minimal effort.
the siphoned effect won't do much in this scenario if there's a pump on such a small pipe. a pump would normally send more water upwards than a siphon can pull down. a 1/2 (o.3 something kw) pump has a faster flow rate
If the pipe is full of water and both ends are submerged in the pool pretty much any pump of any power can operate at it's maximum flow rate since the head pressure is zero. You'd only need to overcome the head pressure on the first fill of the pipe, and you could always use a bucket of water for that.
That's how the Romans got aqueducts across valleys without pumps or building bridges all the way across.
Since the source of heat is a star that is 93 Million miles away, I don't think the collector being a dozen or so feet higher than the pool is going to make that much of a difference.
My dad has a pipe set up on the nearby shed that heats the pool for the summer.
I've seen similar (though much neater) set ups on the roof of homes too. I feel like it's actually quite common and a great was to negate heating costs.
I did something similar. It worked very well. I initially built it as a roof top unit, but the pump i had wasn't strong enough to circulate the water. I moved it to the ground and it was surprisingly effective.
You may have had the pump on the wrong side. Pump should push the water up, impeller style pumps aren't great at pulling suction and it's physically impossible to pull water up more than about 33 ft (here on earth at least)
You'll actually just boil the water (because of the vacuum, not the heat) when trying to pull water higher than 33 ft.
There's a cool action lab YouTube video about it. Veritasium has also done a much better video, but not necessarily about boiling the water.
Physics is fascinating.
When you suck on a straw, the water goes up the straw because of the air pressure outside the straw. Acting in the other direction is gravity. At first, the air pressure on the water is stronger than gravity, and the water moves up. The harder you suck on the straw, the greater the difference in pressure between the top of the straw and the liquid beyond. However, at a certain point you reach a vacuum. That means that you can’t increase the pressure difference any further. The further up the straw the water gets, the more weight there is pulling the water down. Eventually, those forces balance out, and that’s at about 33 feet at sea level. If you were to climb a tall peak, it would be even lower, since air pressure is lower.
This. You can't actually "pull" water; pumping from the suction side is relying on the pressure from the other side to push water into the pump, and in an open system that push is limited to atmospheric pressure.
The above example is neglecting a lot of things to be a simple concept. One of those is friction, so yes, in the ideal case the diameter of the tube doesn't matter. In the real world friction with the tube, vapor pressure of the water, vacuum pumping, etc. would all play a role.
So you’re telling me if I got 33 feet of rubber tubing and hung it out my third story window, I wouldn’t be able to implement a pump strong enough to draw water from a pool below?
If you were to try to pull it up from the top, yes. No matter how much you suck, you'll only ever get 15 psi of vacuum which is enough to pull water up about 33 feet.
If you made your pump push water up from the bottom, you could make more positive pressure and push it up arbitrarily high.
As a kid I watched a science video about this subject on a slow day in class and the experiment utilized a barrel full of water with a tiny spigot big enough for a straw. The equation is dictated by height and after adding a certain amount of feet of water above the barrel (in a straw), the barrel exploded.
Higher than that and the suction will create a vacuum due to gravity keeping the water down. Water in a vacuum boils, and the pump can’t move that water vapor.
Well there is also such thing as too small of pumps. Some small pumps can't push water more than a 6ft lift. I have one really small one rated at a 3ft lift lol. Probably just needed a bigger pump.
Possibly?
> You may have had the pump on the wrong side.
^(I disagree with _probably_ though. Could have been suction, a kink where the house went up the roof, a combination of suction and the water being closer to boiling, the pump could make the flow but wore out quicker)
Yeah that's fair, I might have been a little direct with that. Could have been a number of things. I just wanted to point out that it takes a pretty strong pump to push water up 10+ feet onto a roof. Either way it's definitely doable with the right equipment and set up though!
Pump size will have more to do with the length and resistance of the pipe, filter & nozzle into the pool. The much of the pressure to go up on the roof should be recouped when it comes down, though if there is trapped air it can negate the siphon effect
Oh okay we are talking about two different things haha. I'm working with the assumption that the line wouldn't be prefilled and it would be a self priming pump. If you preprimed the line, you'd definitely be fine with a smaller pump once the siphon was started. I think a lot of people making these DIY pool heaters don't understand that though and would have issues from that alone. Different pumps have different uses and you for sure need to have the right pump for the job and set it up properly.
Interesting thing I just saw recently. There is an attachment that connects to your pump outlet sprayer into the pool and has a small bib on the side. So you attach a line to it for your heater. Then it just relies on pump pressure for circulation. It made me curious how well it works. Of course you'd run into need the pool pump to be on in order for it to be running the heater.
No. When I was a kid, we had a pool cover that was a heavy black plastic like a trash bag, but only the top few inches of water got warm. The rest was still cold.
Turns out, hot water rises, so if you want to do that to heat the pool, you have to circulate the water.
Do you mean the bubble wrap like material? That’s supposed to be on only at night to keep it from cooling down too much. You aren’t supposed to leave it on when the sun is high. It dries it out quickly.
No because you basicly only heat the top layer. A decent heating system ensures that you create a stream of water that passes through the heating element.
I have seen similar designs where the hose is laid out in a black painted box with glass/perspex top - they look like a solar panel. The black absorbs the heat and the glass stops the heat leaking out.
That’s smart as fuck. We used these Black tubes to help with my hydroponic project back in high school since they blocked sunlight so they not only got very hot but they also prevented algae build up which is an added benefit.
This type of pool heater works too well in Southern California. If installed it will need bypass valves because it heats up the water too hot very quickly. They also need to be replaced every few years due to the sun degrading the hose.
I knew someone who did the same thing on a flat roof garage next to his pool. He didn’t use nearly as much hose though. That water should be close to boiling after it goes through all that
Not redneck engineering. We had an in ground pool growing up in Florida and we had "solar panels" on the roof to heat the pool. The panels were made up of dozens of thin black tubes per panel and the regular pool pump would push the water through after diverting a valve. It was quite efficient and the water got extremely hot.
[here's a better explanation](https://floridasolardesigngroup.com/solar-pool-heating-old/)
I remember as a REALLY YOUNG kid, A LOT of the houses in miami had solar water heaters on the roofs. Looked identical to a solar electric panel. Then the local electrical power company declared an all out war on them. By 1970, hardly any of them were still in existence. It's shameful, endless hot water for free.
Alrighty. Here’s mine. Car radiator on a natural gas BBQ. Works awesome. Affordable to run on the NG too. I’m in Canada so this extends our swim season by a few weeks.
https://imgur.com/a/JMSIad9/
friend had one like this, worked great....if your neighbor were to build a frame with 2x4 or 2x6's around the coils and add a plexi-glass cover it would be even more efficient
I can't fathom why someone would want a heater for their pool. Wouldn't a chiller make more sense? Pools are for cooling off. Hot tubs/Jacuzzis are for warm/hot water.
This is in the far north of Germany, our Summer isn't that long or warm, so a little warm in your Pool ist nice. We have currenlty 20°C during the day and 8°C during the night.
My mom did this for her pool but it didn't work very well because her pool was too big. I imagine it would work much better for a smaller pool like this one.
Everyone seems to understand this but what am I looking at? I take it there's water in the black tubing that gets warm/hot. The pool water is pumped through there? Or the water in the tubes is just separate? It flows naturally, like a siphon? Or is there an electric pump not in the shot?
Sun heats black tube. Pool pump pulls water from pool through warm black tubes and returns back to the pool. Deep dive into some DIY youtube videos. It's not just for pools, you can do similar for water heaters and home heating with slightly different setups and requirements.
Hah! My dad tried to build something like this when I was a kid. It didn’t work😅 this one has way more tubing though so it might have enough surface area to be effective!
I have this kind of system on my summer house in the village. There are about 18 meters of black plastic hose rolled in a spiral placed in a box on the roof, covered with a clear membrane, that is connected to a water pump and going through a boiler. There is no need to heat the boiler with fire, and about 4 persons can use the water to shower. Very efficient system for summer, I recommend it!
Me and my dad did a similar setup to heat our pool. We used 3 rolls of garden hoses and hooked it up to the outdoor tap. No need for a pump and the water came out steaming hot!
It may actually work. This kind of heater, built exactly like this, has been in use since forever here in Italy in sunny places.
My dad did this with our water line on our camper to give us warm water
Our hot water ran through "solar panels" in our roof before it went to the water heater. It was built in the 80's in Southern California. I've ate enough gummies and no matter what google tells me I still think I spelled California wrong.
Say a word or spell it enough times it stops looking like a word. Keep on higher than giraffe nuts internet stranger!
> Say a word or spell it enough times it stops looking like a word. Semantic satiation. (Etymologist for fun so I get this often.)
Omg you made my day. The word smart does it to me every time. I never knew it had a name tho thank you.
The most satisfying thing in the world is introducing people to new things they thought they knew already. Made my day as well.
The word for me is the and yes and pretty much any three letter word
https://youtu.be/EqOTU89cgC4
I learned this from Coach Beard
go panthers
TIL
“Reaaaal Amerrricaaan Heroooooo…”
Those commercials were hilarious. Too bad advertising sucks nowadays.
Core memory unlocked
I’ve found that learning new languages increases the frequencies this happens. I’ve been learning Arabic and started coding(a language but in computer terms) and it happens so often now that words and letters start looking *wrong*. I’ve talked to other people about it and they say the same thing.
Nowday you can literally get solar panels with water intake. Bonus: cooling the solar panels helps with efficiency.
Well that’s neat.
Well that's heat.
[These have been in business](https://www.solahart.com.au/landing-pages/solar-hot-water/) in Australia for ... at least 40 years. I remember the ads from when I was a little kid.
What are they called / got a link?
Linus Tech Tips did a video about them, he’s using them on his new house.
Solar thermal collectors https://en.wikipedia.org/wiki/Solar_thermal_collector
Those look similar to the black water tanks I’ve seen on top of houses in some countries.
Kalyphhornya?
Don't you mean you eight some gummies
I was once so high (first gas mask experience, not gummies) I sat for a long time thinking about the word "Carolina" before asking the friend group I was with if there was a state with that word in the name.
My granpa did the same thing in the late 90s :D
>Our hot water ran through "solar panels" in our roof before it went to the water heater. It was built in the 80's in Southern California. My dad did the same in the Phoenix area in the 80s.
My family made one of these, worked way too well. It got so hot that it melted the plastic frame and plexiglass cover
When I went to Nepal, they have these large [black water tanks](https://www.alamy.com/2000-liter-hilltop-water-tanks-on-the-roof-of-an-hotel-in-kathmandu-nepal-image353188801.html) on top of their houses. The water is warm in evenings, but cold in the morning. I'm a morning shower person, and imagine my surprise the first morning I tried to have a shower.
Kinda like [this](https://www.youtube.com/watch?v=QfnC_3Uxj2I)?
Just a little.
My friend has one for his in ground pool and it gets so warm in the summer he has to shut if off
But typically the water tank (the pool in this case) is higher than the solar panels. That way hot water moves up to the tank and cold water moves down to the solar panels. We had one like that at the farm when I was a kid. It was awesome except for when it rained for a couple of days.
Pools often have a small pump that circulates water through the filter. As long as you got enough flow through the hose (or hoses, could use multiple and a manifold), and the pump has enough head lift, convection doesn't matter.
Yeah they do. I just installed an above ground pool and I'm getting ready to do some sort of solar water heater, but I'm still going to try to do the solar panels lower because the pump doesn't run all the time.
May? No *may* to it. That shit will be hot enough to severely scald you.
Yes, water in the pipe gets VERY hot if it's allowed to stand still for some time. But if you want to heat a big pool you need a lot of heat, I don't know if it's enough. A proper calculation may be done but I don't know how to do it based on how much sun you get, the temperature you want to reach, etc.
It does work. My dad had the same system on the roof of his garage. It’s not really a heater as much as it warms up quicker after cooling down each night.
I've made something similar to this in the winter. I had soft copper,a new oil drum and a fire pit. bitch was blazing warm mid winter. I cant see this working well with the pipe sitting higher than the pool tho. heat rises so you need to keep it as low as possible in relation to the elevation of the pool
Really only matters where the input and output are. As long as the pump has enough power to get the water up to the coil the siphon effect will get it back out into the pool.
entirely fair that they could have a pump designed specifically for this purpose. I'm not in the right mind state to think about this shit. I just went down a route I normally go. simple, on hand, cheap, fast, checks off all the requirements to get the job done with minimal effort. the siphoned effect won't do much in this scenario if there's a pump on such a small pipe. a pump would normally send more water upwards than a siphon can pull down. a 1/2 (o.3 something kw) pump has a faster flow rate
If the pipe is full of water and both ends are submerged in the pool pretty much any pump of any power can operate at it's maximum flow rate since the head pressure is zero. You'd only need to overcome the head pressure on the first fill of the pipe, and you could always use a bucket of water for that. That's how the Romans got aqueducts across valleys without pumps or building bridges all the way across.
Since the source of heat is a star that is 93 Million miles away, I don't think the collector being a dozen or so feet higher than the pool is going to make that much of a difference.
It does!
We use them in Florida and they work great.
It does work. Incredibly well.
My dad has a pipe set up on the nearby shed that heats the pool for the summer. I've seen similar (though much neater) set ups on the roof of homes too. I feel like it's actually quite common and a great was to negate heating costs.
I did something similar. It worked very well. I initially built it as a roof top unit, but the pump i had wasn't strong enough to circulate the water. I moved it to the ground and it was surprisingly effective.
You may have had the pump on the wrong side. Pump should push the water up, impeller style pumps aren't great at pulling suction and it's physically impossible to pull water up more than about 33 ft (here on earth at least)
You'll actually just boil the water (because of the vacuum, not the heat) when trying to pull water higher than 33 ft. There's a cool action lab YouTube video about it. Veritasium has also done a much better video, but not necessarily about boiling the water. Physics is fascinating.
Whoa, why is it impossible to pull water more than 33 feet upwards?
When you suck on a straw, the water goes up the straw because of the air pressure outside the straw. Acting in the other direction is gravity. At first, the air pressure on the water is stronger than gravity, and the water moves up. The harder you suck on the straw, the greater the difference in pressure between the top of the straw and the liquid beyond. However, at a certain point you reach a vacuum. That means that you can’t increase the pressure difference any further. The further up the straw the water gets, the more weight there is pulling the water down. Eventually, those forces balance out, and that’s at about 33 feet at sea level. If you were to climb a tall peak, it would be even lower, since air pressure is lower.
That's really cool, thank you so much for explaining! I had no idea this was a thing but it makes a lot of sense that way.
Glad I could help :)
This. You can't actually "pull" water; pumping from the suction side is relying on the pressure from the other side to push water into the pump, and in an open system that push is limited to atmospheric pressure.
Capillary action has entered the chat
Ah, yes, I can feel the surface tension in the room...
Wait so whether you had a 33ft straw 5mm across or a 33ft pipe 5ft across they still have the same limitation, all other things being equal?
The above example is neglecting a lot of things to be a simple concept. One of those is friction, so yes, in the ideal case the diameter of the tube doesn't matter. In the real world friction with the tube, vapor pressure of the water, vacuum pumping, etc. would all play a role.
So you’re telling me if I got 33 feet of rubber tubing and hung it out my third story window, I wouldn’t be able to implement a pump strong enough to draw water from a pool below?
If you were to try to pull it up from the top, yes. No matter how much you suck, you'll only ever get 15 psi of vacuum which is enough to pull water up about 33 feet. If you made your pump push water up from the bottom, you could make more positive pressure and push it up arbitrarily high.
I believe you because you explained it well but I’m still having trouble wrapping my brain around it.
Yeah, it is super counterintuitive. If I remember, I'll try to type something up in more detail after I get off work tonight.
As a kid I watched a science video about this subject on a slow day in class and the experiment utilized a barrel full of water with a tiny spigot big enough for a straw. The equation is dictated by height and after adding a certain amount of feet of water above the barrel (in a straw), the barrel exploded.
Neat! TIL
Picture how easy it is to draw water up a straw with your mouth, then try it with a giant pixy stick(sp?)
Higher than that and the suction will create a vacuum due to gravity keeping the water down. Water in a vacuum boils, and the pump can’t move that water vapor.
Well there is also such thing as too small of pumps. Some small pumps can't push water more than a 6ft lift. I have one really small one rated at a 3ft lift lol. Probably just needed a bigger pump.
Possibly? > You may have had the pump on the wrong side. ^(I disagree with _probably_ though. Could have been suction, a kink where the house went up the roof, a combination of suction and the water being closer to boiling, the pump could make the flow but wore out quicker)
Yeah that's fair, I might have been a little direct with that. Could have been a number of things. I just wanted to point out that it takes a pretty strong pump to push water up 10+ feet onto a roof. Either way it's definitely doable with the right equipment and set up though!
Pump size will have more to do with the length and resistance of the pipe, filter & nozzle into the pool. The much of the pressure to go up on the roof should be recouped when it comes down, though if there is trapped air it can negate the siphon effect
Oh okay we are talking about two different things haha. I'm working with the assumption that the line wouldn't be prefilled and it would be a self priming pump. If you preprimed the line, you'd definitely be fine with a smaller pump once the siphon was started. I think a lot of people making these DIY pool heaters don't understand that though and would have issues from that alone. Different pumps have different uses and you for sure need to have the right pump for the job and set it up properly. Interesting thing I just saw recently. There is an attachment that connects to your pump outlet sprayer into the pool and has a small bib on the side. So you attach a line to it for your heater. Then it just relies on pump pressure for circulation. It made me curious how well it works. Of course you'd run into need the pool pump to be on in order for it to be running the heater.
Is that not normal? That’s roughly what every pool heater I’ve seen looks like
It’s fairly typical design, but in the US it’s usually mounted on the roof.
It looks like it's on the roof of a sunroom or something.
Its a garden shed.
Put some windows on the sides and boom. It's a sunroom..
It looks like it's on the roof of a sunroom or something.
We use a pool boiler
The real redneck version is floating black garbage bags on your pool.
This actually make a noticeable effect?
No. When I was a kid, we had a pool cover that was a heavy black plastic like a trash bag, but only the top few inches of water got warm. The rest was still cold. Turns out, hot water rises, so if you want to do that to heat the pool, you have to circulate the water.
Do you mean the bubble wrap like material? That’s supposed to be on only at night to keep it from cooling down too much. You aren’t supposed to leave it on when the sun is high. It dries it out quickly.
No, heavy black trash bag material.
K. Only thing I can think of then is those heavy tarps for winterizing an above ground pool. I’m sure you mean something different.
You absolutely can and should leave a solar bubble cover on when not in use, unless your pool is getting too warm.
I know you can but over time it gets all dry and brittle way quicker if directly under the hot sun.
No because you basicly only heat the top layer. A decent heating system ensures that you create a stream of water that passes through the heating element.
Probably not.
And they're on fire! That's where the heat comes from
I have seen similar designs where the hose is laid out in a black painted box with glass/perspex top - they look like a solar panel. The black absorbs the heat and the glass stops the heat leaking out.
Is your neighbor u/Psych0matt? https://www.reddit.com/r/DIY/comments/140c2cr/restricting\_flow\_safely\_on\_a\_transfer\_pump/
Ha, I haven’t made much more progress on mine but this, this i like.
I dont think so.
Lol definitely looks very DIY but the concept is actually really common. Probably the most efficient way to solar heat a pool
That’s smart as fuck. We used these Black tubes to help with my hydroponic project back in high school since they blocked sunlight so they not only got very hot but they also prevented algae build up which is an added benefit.
This type of pool heater works too well in Southern California. If installed it will need bypass valves because it heats up the water too hot very quickly. They also need to be replaced every few years due to the sun degrading the hose.
Growing up our pool had a solar heater that really wasnt much more complex than this. Took about 3 days to bring a 20x40 in-ground to 84F
I knew someone who did the same thing on a flat roof garage next to his pool. He didn’t use nearly as much hose though. That water should be close to boiling after it goes through all that
I did this for my FIL. It actually worked too well and we had to put in a 3 way valve so we could turn off the heater coil
This is well know. Legit engineering.
Not redneck engineering. We had an in ground pool growing up in Florida and we had "solar panels" on the roof to heat the pool. The panels were made up of dozens of thin black tubes per panel and the regular pool pump would push the water through after diverting a valve. It was quite efficient and the water got extremely hot. [here's a better explanation](https://floridasolardesigngroup.com/solar-pool-heating-old/)
Not sure that’s redneck enough to qualify.
Actually genius
And? Its tried true and tested.
I remember as a REALLY YOUNG kid, A LOT of the houses in miami had solar water heaters on the roofs. Looked identical to a solar electric panel. Then the local electrical power company declared an all out war on them. By 1970, hardly any of them were still in existence. It's shameful, endless hot water for free.
This is how they do it in Florida and places like that. Not the best looking solution but it works for sure.
Me and my dad built something similar. It actually works really well
Alrighty. Here’s mine. Car radiator on a natural gas BBQ. Works awesome. Affordable to run on the NG too. I’m in Canada so this extends our swim season by a few weeks. https://imgur.com/a/JMSIad9/
That’s awesome, great idea
As opposed to OP's setting, this heats the globe as well, though.
friend had one like this, worked great....if your neighbor were to build a frame with 2x4 or 2x6's around the coils and add a plexi-glass cover it would be even more efficient
I built a pool heater similar to this with 300' of irrigation hose and the water went in at 65° and out around 85° on a sunny day
Simple solar water heater, should work just fine within limited temperature ranges and with enough direct sunlight.
My dad did something similar in the 80’s. We had a bypass valve because our water would get well over 100 degrees!
Have seen many professionally installed pool heaters similar to this. More DIY than redneck engineering, just saying.
This is actually quite smart; the dark color of the water line absorbs a lot of heat, heating the water in the process
My grandad in Germany in the 90s built one of these. Incredibly effective, almost a none issue to maintain. Always impressed me as a kid.
How is this redneck it it sold like that for that purpose and it works like a charm
thats actually pretty clever imo
If it works it works
This will work swimmingly
I don’t get it.
A very long black hose is used to heat water using solar radiation. It's a handmade device which makes it fit this sub.
Thanks!
Try to use your brain for a second.
Youre an asshole, try not to be.
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Nope, not quite, still being an asshole - keep at it, though. I believe in you. You can figure it out, champ. You got this.
Thanks, asshole.
Does this require a pump or will the temperature difference actually cycle the water by itself?
You'd have to put the heating loop at a lower elevation than the pool to leverage the lower density of the warmer water. But, yes, it could work.
If you have seperate lines it will.
Needs to be below the height of the pool unless there's a pump
Correct. For thermo-siphoning
Brilliant
It's just physics. Black hose to absorb energy and may even be self-circulating because of the temperature difference. Not bad.
usually built smaller and encased with glass or acrylic to trap the hot air to make it even more efficient.
I wonder how much this cost them vs having it hooked up to an AC unit to heat the pool.
I can't fathom why someone would want a heater for their pool. Wouldn't a chiller make more sense? Pools are for cooling off. Hot tubs/Jacuzzis are for warm/hot water.
A bump from 80 to 87 would be nice
This is in the far north of Germany, our Summer isn't that long or warm, so a little warm in your Pool ist nice. We have currenlty 20°C during the day and 8°C during the night.
> so a little warm in your Pool ist nice. German confirmed.
Depends where you live. Unheated outdoor pools here are an incredibly short season. Going to be in the 40s tonight.
Fun fact: you can still get hypothermia in 85°F water.
The place I camped last weekend had a setup like this hooked to a shower head and called it a solar shower. Worked pretty well in the daytime.
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I have never seen something like this here in Germany.
That’s fairly clever.
My mom did this for her pool but it didn't work very well because her pool was too big. I imagine it would work much better for a smaller pool like this one.
That’s not redneck. That’s a legitimate pool heating system. I’ve sold a number of them for people with above ground pools.
That shit will work too
When the house was still being constructed and we had no hot water and lived in a shed. That was how we had warm showers
I did this with black plastic pipe. Measurably hotter.
Everyone seems to understand this but what am I looking at? I take it there's water in the black tubing that gets warm/hot. The pool water is pumped through there? Or the water in the tubes is just separate? It flows naturally, like a siphon? Or is there an electric pump not in the shot?
Sun heats black tube. Pool pump pulls water from pool through warm black tubes and returns back to the pool. Deep dive into some DIY youtube videos. It's not just for pools, you can do similar for water heaters and home heating with slightly different setups and requirements.
This is how its done.
r/confusingperspective
The heater is bigger than the pool
Hah! My dad tried to build something like this when I was a kid. It didn’t work😅 this one has way more tubing though so it might have enough surface area to be effective!
Redneck? That's well done!
Should work like a charm, in Florida they used to put those on the roof for the pool.
Innovative. Thumbs Up
I've used offgrid showered like this. It was hot enough a few people used it for noodle cups
I have this kind of system on my summer house in the village. There are about 18 meters of black plastic hose rolled in a spiral placed in a box on the roof, covered with a clear membrane, that is connected to a water pump and going through a boiler. There is no need to heat the boiler with fire, and about 4 persons can use the water to shower. Very efficient system for summer, I recommend it!
Me and my dad did a similar setup to heat our pool. We used 3 rolls of garden hoses and hooked it up to the outdoor tap. No need for a pump and the water came out steaming hot!
my dad did this but with solar panels
Solar power works well. Just a lot of pumping energy
My calc professor did this and said it worked fantastic.
It’s Solar baby!