Hi Guys, I bought 20 of your tubes last summer. They all arrived in great condition too! My experiment was:1 tube, in the sun with a plastic Safeway bag stuffed lightly into the top about 1'' down - would produce boiling water in just less than 2 hours! But, it would be much better if you used a thermometer in this video to show how much the convection is helping heat the water. Thank you for doing that, it would really help those still interested in considering solar . Cheers, GregK.
Great video. I'm told that these tubes are being manufactured to a lower set of specs then the original design. If made from spec they will collect around twice as much energy. the original unit is good for around 300 C+ ( I had a phone call with the original designer of "Solar Tube" 5/11) Food for thought Circa 1980 Sydney Maybe also of interest was a prototype mini solar thermal unit using evac tubes, about
@CleanRepublic, For solar hot water, what you have is an excellent product at an excellent price and it is built to that price. These are ALL copies of "Solar Tube" developed here and Licensed to Chinese manufacturers. NOBODY on the planet has made the original spec product since the 1980's ! Only a handfull of original units still exist. i know because I am trying to get my hands on one! Give a little respect to the people who developed it ! So sorry but you are wrong, read between the lines
@ajsgrs My concern is if the pump fails, temperatures in the manifold can exceed 300 degrees. PVC is no match for those temps. I personally have had PVC melt at much lower temps! Try is for yourself; take a PVC fitting and place in boiling water for 5 minutes. When removed, it is like putty. Unless this is some type of special plastic, I would stay away!
I was going to say the same thing, pvc should not be used in high heat applications, you could use plumbing fixtures then get pvc that is about 3 inches larger and inject some foam in between the pvc and the plumbing.
finallymade it using smaller pvc pipes and longer heat pipes tubes, unfortunately pvc pipes melt with the heat but the experience was ok now going for copper. asap its working ill tell you, regards
PVC pipe doesn't have nearly the temperature resistance needed for use with vacuum tube solar collectors. You can easily reach a temperature that will melt the plastic.
+strato man Hey Strato, Depending on the use and what kind of system you build that can certainly be true. Check out the copper pipe manifold option available for higher temperature situations on our website: www.electric-bike-kit.com/solarwaterheater.aspx Cheers
I bought a piece of CPVC Brazilian manufacturer of Tigre, type "T" number 35mm, and sunk in a vacuum tube 500mmx58mm but got a little slack. I'm filling this gap with Teflon tape. but I have my doubts whether ocorerrá leaks. I will test.
Good video, but id wasn't detailed enough, it is obviously a demo setup so I am not worried about parabolic this and that, but it would have been good to put in some basic detail that you could have gotten while doing the shoot. Stuff like with this setup we are moving X gallons/liters of water an hour/minute, the water is reaching X degrees, The PVC melted after X hours or is still standing up to use and so on.
@CleanRepublic, You may have mis understood my comment. I was not running them down, these are great units at a great price. I made the comment to open dialogue for OTHER high performance applications. The scientist who developed the first one lives 8km from me! the Chinese units are made under lic and ARE NOT to the original specs. You are talking solar hot water, I am talking other applications. The ORIGINAL designer has personaly told me! I take it you are pushing a product?
these tubes get very hot, having this system setup the way you have it, regardless of the application would cause the tubes to break as soon as the colder water from the collection/ expansion tank entered the system. really not much info in this video.
man, the title is "DIY solar vacuum tube water heater manifold". where is the explanation of that "DYI" ? ok, you have a self regulating system. so what? self regulating are also systems at shop, but here we expected you to tell details, how to build ... etc
Poor design, need to be spaced further apart and utilize parabolic high reflective troughs ( this design is everywhere.. but foolish, half the ability of the tube), not to mention oil use would be better than water for heat storage, and as well they dont engineer these with TEG modules to make electric current either.. a simple add on area for upgrades. Its sad to see good ideas put to bad design, not to mention you could add a "crockpot" cooker indoors with the same reservoir.
![[TH] Esports World Cup : Point Rush Stage](http://i.ytimg.com/vi/eLU-jnYp3Zs/mqdefault.jpg)
![[LIVE] : ONE ลุมพินี 70 | คู่เอก "โฟกัส vs สเตฟาน"](http://i.ytimg.com/vi/_fVieQ89DRQ/mqdefault.jpg)
Hi Guys, I bought 20 of your tubes last summer. They all arrived in great condition too!
My experiment was:1 tube, in the sun with a plastic Safeway bag stuffed lightly into the top about 1'' down - would produce boiling water in just less than 2 hours!
But, it would be much better if you used a thermometer in this video to show how much the convection is helping heat the water.
Thank you for doing that, it would really help those still interested in considering solar .
Cheers, GregK.
Great video.
I'm told that these tubes are being manufactured to a lower set of specs then the original design. If made from spec they will collect around twice as much energy.
the original unit is good for around 300 C+
( I had a phone call with the original designer of "Solar Tube" 5/11)
Food for thought Circa 1980 Sydney
Maybe also of interest was a prototype mini solar thermal unit using evac tubes, about
I wish you had a parts list so that I could make this. How did you seal the glass tubes to the PVC manifold?
@CleanRepublic, For solar hot water, what you have is an excellent product at an excellent price and it is built to that price.
These are ALL copies of "Solar Tube" developed here and Licensed to Chinese manufacturers.
NOBODY on the planet has made the original spec product since the 1980's !
Only a handfull of original units still exist. i know because I am trying to get my hands on one!
Give a little respect to the people who developed it !
So sorry but you are wrong, read between the lines
Good Video, Question, what do you use to seal the glass tube to the PVC pipe? Thanks
@ajsgrs My concern is if the pump fails, temperatures in the manifold can exceed 300 degrees. PVC is no match for those temps. I personally have had PVC melt at much lower temps! Try is for yourself; take a PVC fitting and place in boiling water for 5 minutes. When removed, it is like putty. Unless this is some type of special plastic, I would stay away!
Fantastic video. Can I ask: what solar pump do you have working with that manifold?
Thank you👍👍
I was going to say the same thing, pvc should not be used in high heat applications, you could use plumbing fixtures then get pvc that is about 3 inches larger and inject some foam in between the pvc and the plumbing.
finallymade it using smaller pvc pipes and longer heat pipes tubes, unfortunately pvc pipes melt with the heat but the experience was ok now going for copper. asap its working ill tell you, regards
me encanta esta bsby
How well does the the PVC perform with the heat? Any stats or figures on the amount of heat you can get with the system in this fashion?
PVC pipe doesn't have nearly the temperature resistance needed for use with vacuum tube solar collectors. You can easily reach a temperature that will melt the plastic.
+strato man Hey Strato, Depending on the use and what kind of system you build that can certainly be true. Check out the copper pipe manifold option available for higher temperature situations on our website: www.electric-bike-kit.com/solarwaterheater.aspx
Cheers
@@CleanRepublic
Do you all still offer the glass solar heater tubes ? Are you still CleanRepublic ?
Thx
I bought a piece of CPVC Brazilian manufacturer of Tigre, type "T" number 35mm, and sunk in a vacuum tube 500mmx58mm but got a little slack. I'm filling this gap with Teflon tape. but I have my doubts whether ocorerrá leaks. I will test.
Did you use heat pipes inside the vacuum tubes?
those vacuum tubes transfer heat through the latent heat of condensation using a small amount of methanol in them
cool
Good video, but id wasn't detailed enough, it is obviously a demo setup so I am not worried about parabolic this and that, but it would have been good to put in some basic detail that you could have gotten while doing the shoot. Stuff like with this setup we are moving X gallons/liters of water an hour/minute, the water is reaching X degrees, The PVC melted after X hours or is still standing up to use and so on.
No point in asking questions guys iv you lookmat ghe comments none havd been answered
ohh this is a great idea... but I prefer beer cans.. It heat the water more faster..
@CleanRepublic, You may have mis understood my comment. I was not running them down, these are great units at a great price. I made the comment to open dialogue for OTHER high performance applications.
The scientist who developed the first one lives 8km from me! the Chinese units are made under lic and ARE NOT to the original specs.
You are talking solar hot water, I am talking other applications.
The ORIGINAL designer has personaly told me!
I take it you are pushing a product?
no so insulated. all the heat are loosing from the expose uninsulated plastic tubing and bucket. might need a good coleman cooler.
these tubes get very hot, having this system setup the way you have it, regardless of the application would cause the tubes to break as soon as the colder water from the collection/ expansion tank entered the system. really not much info in this video.
But, can it run Crysis?
This sounds like Luke Conard.
man, the title is "DIY solar vacuum tube water heater manifold". where is the explanation of that "DYI" ? ok, you have a self regulating system. so what? self regulating are also systems at shop, but here we expected you to tell details, how to build ... etc
work goes much faster with Avasva plans.
Poor design, need to be spaced further apart and utilize parabolic high reflective troughs ( this design is everywhere.. but foolish, half the ability of the tube), not to mention oil use would be better than water for heat storage, and as well they dont engineer these with TEG modules to make electric current either.. a simple add on area for upgrades. Its sad to see good ideas put to bad design, not to mention you could add a "crockpot" cooker indoors with the same reservoir.
You can find best solutions on Avasva website.