Thank you for an excellent job of explaining this thing. Everyone else skips over the basics which is what I’ve been trying to figure out. Again, thanks for an excellent job. 👍👍
Awesome! I'd like to hear more about a possible application and how to implement. For instance, if a low income community became interested in building this unit, what are the chances they'd know anything about getting the hot water to their shower? Or anywhere useful? Can you connect it to a home water system? Or how could this be simply applied to heat a room inside a house? I know nothing about this stuff, but I'm picturing a simple tube system connected to my subfloor and entering my crawl space through foundation vents. Where would the hot water go after it ran through the tubes? So many dumb questions, but it would be cool to see you guys make a video that connects this unit to a cheap, practical energy saving solution in the home - something that the layperson could actually execute. I'm going to try to build this exact system because it's cheap and cool, but I have no idea what I'll do with it when I'm done. I'd love to see more from you guys. I like your team. Keep it up.
Excellent engineering. The costing could be dollar averaged with the emergence of alibaba and other Chinese E-tailers. In bulk including shipping costs... the tubes could be sourced for probably a few bucks each... Thanks for the infotainment.
I'm not hating your effort and idea but PVC will not hold up to Hot Water. I used CPVC with a solar hot water heater and found that my CPVC began to warp badly and become like wet noodles. The next cheapest option was to use metal electrical conduit but then I had trouble keeping a vacuum seal. As dissimilar materials have different rates of expansion and contraction between day and night time temperatures. Good luck one day we will make a perfect mouse trap.
Doesn't need to contain a vacuum does it? Just the pressure of the water in the system. I'm wondering how much pressure this system could contain before the tubes pop out.
Great idea. Needs some fine adjustment though. How much pressure can the system contain? I'm sure you can think of an ingenous solution! Also any ideas on how to prevent freezing in cold weather?
Wouldn't it be easier and cheaper and quicker to just coil a 30m black garden hose in the sun and connect it to a tap at one end and close the nozzle at the other.
Not really, no. The whole point of a 'manifold' system is that it is far more efficient and effective than a simple coil. There are videos/websites that explain the physics behind it.
The tubes are double walled with a vacuum already between the walls. One end is open in the middle for water or air, but the walls are sealed. When the sun heats the tube of water, the vacuum impedes heat loss to the air.
No funciona..el plastico sera ablandado por el calor..imposible de mantener el sistema sellado o sin fugas de agua...que es lo que va a mover el agua caliente del header.? una bomba de circulacion? y otros problemas mas....
+chaki perdomo no creo que sea el diseño original es solo un prototipo, pero aun asi yo creo que si aguantara el PVC puesto que tiene mucha resistencia a pesar de ser plastico
No, no funciona...estos tubos calientan el agua a una alta temperatura, mas de lo que el pvc puede resistir...no tienen bomba para circular agua fria en el sistema...El agua caliente se acumula solo en una area y ese es la cabecera del panel....He estado haciendo experimentos con energia solar desde 1980, y he visto pasar esto con experimentos que personalmente he hecho...Los calentadores de plastico necesitan una bomba de recirculacion..para mantenerlos a cierta temperatura....Lo otro es que entre mas alta la temperatura en el plastico, mayor la contaminacion del agua..por los quimicos que despide el plastico al entrar en contacto con agua a altas temperaturas...contamination is obious.
+Jesus Alberto A cunatos grados de calor llega la temperatura en un tubo evacuado... Hasta cuantos grados de calor aguanta el pvc antes de empezar a ablandarde y colapsar... no es material compatible con un proyecto de alta temperratura... simple de entener..
Thank you for an excellent job of explaining this thing. Everyone else skips over the basics which is what I’ve been trying to figure out.
Again, thanks for an excellent job. 👍👍
I just finished my own solar heater project... its thanks to you..
Awesome! I'd like to hear more about a possible application and how to implement. For instance, if a low income community became interested in building this unit, what are the chances they'd know anything about getting the hot water to their shower? Or anywhere useful? Can you connect it to a home water system? Or how could this be simply applied to heat a room inside a house? I know nothing about this stuff, but I'm picturing a simple tube system connected to my subfloor and entering my crawl space through foundation vents. Where would the hot water go after it ran through the tubes? So many dumb questions, but it would be cool to see you guys make a video that connects this unit to a cheap, practical energy saving solution in the home - something that the layperson could actually execute.
I'm going to try to build this exact system because it's cheap and cool, but I have no idea what I'll do with it when I'm done. I'd love to see more from you guys. I like your team. Keep it up.
This...looks more like a inefficient passive solar hot water heater, not an evacuated solar system.
Can't call that inventing, adapting at best
Good luck keeping the tubes in when it heats up with no bottom tube cap framing
Excellent engineering. The costing could be dollar averaged with the emergence of alibaba and other Chinese E-tailers. In bulk including shipping costs... the tubes could be sourced for probably a few bucks each... Thanks for the infotainment.
I'm not hating your effort and idea but PVC will not hold up to Hot Water. I used CPVC with a solar hot water heater and found that my CPVC began to warp badly and become like wet noodles. The next cheapest option was to use metal electrical conduit but then I had trouble keeping a vacuum seal. As dissimilar materials have different rates of expansion and contraction between day and night time temperatures. Good luck one day we will make a perfect mouse trap.
Doesn't need to contain a vacuum does it? Just the pressure of the water in the system. I'm wondering how much pressure this system could contain before the tubes pop out.
Great idea. Needs some fine adjustment though. How much pressure can the system contain? I'm sure you can think of an ingenous solution! Also any ideas on how to prevent freezing in cold weather?
What's the name of the electric bike company you buy your tubes from?
Good job... Don't listen to the haters
Genius! I will do this!
Boiling and pressure from steam?
how did you make the lid? Did you use foam to seal?
Wouldn't it be easier and cheaper and quicker to just coil a 30m black garden hose in the sun and connect it to a tap at one end and close the nozzle at the other.
Not really, no. The whole point of a 'manifold' system is that it is far more efficient and effective than a simple coil. There are videos/websites that explain the physics behind it.
can uniseal stand ti pressure, i think tubes will pop out if pressurizes
did you try to put in tap water pressure in to taht system
what about air intake ?
There is no advantage in using vacuum tube with out a vacuum rather than using pipe
The tubes are double walled with a vacuum already between the walls. One end is open in the middle for water or air, but the walls are sealed. When the sun heats the tube of water, the vacuum impedes heat loss to the air.
inventing! bought from china and selling it?
what r ur views on acetone or polypropylene as heat exchangers
no links or references. great idea but not very helpful overall
No funciona..el plastico sera ablandado por el calor..imposible de mantener el sistema sellado o sin fugas de agua...que es lo que va a mover el agua caliente del header.? una bomba de circulacion? y otros problemas mas....
+chaki perdomo no creo que sea el diseño original es solo un prototipo, pero aun asi yo creo que si aguantara el PVC puesto que tiene mucha resistencia a pesar de ser plastico
No, no funciona...estos tubos calientan el agua a una alta temperatura, mas de lo que el pvc puede resistir...no tienen bomba para circular agua fria en el sistema...El agua caliente se acumula solo en una area y ese es la cabecera del panel....He estado haciendo experimentos con energia solar desde 1980, y he visto pasar esto con experimentos que personalmente he hecho...Los calentadores de plastico necesitan una bomba de recirculacion..para mantenerlos a cierta temperatura....Lo otro es que entre mas alta la temperatura en el plastico, mayor la contaminacion del agua..por los quimicos que despide el plastico al entrar en contacto con agua a altas temperaturas...contamination is obious.
Entonces es el proyecto definitivo?
Entonces es el proyecto definitivo?
+Jesus Alberto A cunatos grados de calor llega la temperatura en un tubo evacuado... Hasta cuantos grados de calor aguanta el pvc antes de empezar a ablandarde y colapsar... no es material compatible con un proyecto de alta temperratura... simple de entener..
Tom tom
陽台使用
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epic fail doc, let your students talk/explain/grow, don't root yourvoen Dr horn, let them take pride in it, too. cool concept, tho