An exact explanation, for everyone's understanding, something rarely seen on RUclips. No off-topic footage, no uninteresting things, just what the title says. Congratulations from me.
This is THE best video about solar heaters I've seen. There are too many others from India and Pakistan but they just go with installation, begging for subscriptions and shares etc etc.. Your video is well categorized, TO THE POINT information and that's it. Others should Learn from you. Thanks, From Pakistan
Just used one of these a few days ago while visiting in Mexico and was amazed by them, but couldn’t understand how they worked. Now I do! Thanks so much for making this video!
Greetings from South Africa - this is the bets explanation ever . Here we have many Retrofit systems - evacuated tubes connecting to the existing geyser inside the house.
I have 2 low pressure tank for total of 300 Lt of hot water ,I got my system almost 25 years ago and still going strong even if 2 tubes have lost their black colour (have to change them soon....wouldn't change the system with anything else. Small downside: the 3 top floor has less pressure the the other 2 floors but still the best/simple system out there.
i use 4 x HP tubes do add heat to my koi pond for winter having built a simple cycle system myself with a relatively low flow rate and using simple pvc tubes and large dia pipe for the small tank. still working out the kinks but its a cheap easy way to heat a koi pond slightly to try to keep 3000 litres close as possible weather depending to 20-25 deg c. great video good to the point presentation etc
Thank you for the careful explanation - I'm very curious about temperature performance during rainy season, where there may be cloud cover and only a few hours of direct sunlight per day... if at all.
We have Viessmann vacuum tube solar hot water system in conjunction with our boiler and a super insulated water tank. On the west coast of Canada it works amazing even on over cast days. We use solar power for the pumps since our tubs run horizontal and the tubes are set at the optimum angle for our latitude. This way the system sits tight to the roof and out of sight. I can see how a low pressure system could make a great for off grid shower.
great explanation, i already installed a unit at my house it works great at the sunny days but it rarely reach 35 degree during cloudy and rainy days, i wonder if you can use an alternative light source by night like strong projector , will this work ? and did any one try to put a source of light exposure to the tubes?? please let me know , again thank you all.
I've got an unpressuriesd 24T 200l system. I've just put a temp sensor at the bottom of a tube to see the water temp stratification in the night. Its still freezing outside so no water, but the temperature grows immediatly over 128C (max sensor temp) in sunlight and takes around 3 hours to fall to ambient air. Good stuff, cheap, but hard to install. I've removed with no problems a tube with water inside last year. I plan to calculate a liniarity between tank water temp and tubes so I'll know when it's safe to fill or drain earlier in the spring and farther in november and maybe install a low power heater for that .
Nick I am very new at this and have purchased two solar panel water heaters for a home at a beach front house. This house is located at latitude 11.95ª North, hence we have sun all year long. The Panel will be placed in the south to north direction and the roof has a slope of 10ª form north to South. In your experience at what slope from the horizontal do you recommend we place the panel tank to guaranty we have optimum convection flow from the tube to the tank. Thank you.
I enjoyed watching your video. You really did well.....big thank you. I am a Ugandan and i work as a natural gas heating engineer installing heating systems in the uk. I have always wondered why our homes in Kampala don't have such evacuated heating systems. One thing I would like to ask you is the risk of legionnaire contamination in tanks. Is this something anyone have experienced in African using this system? Many thanks
I have an Evacuated Solar Tube system I installed in 2007 here in south western Canada. The solar tubes are only connected to a manifold with no storage at the top. I have 4 panels of 20 tubes each. The hot water is circulated into a 160 gallon stainless tank I have fabricated. It is basically open on top with an insulated lid on it with insulation on all other sides. I coiled 100 feet of copper tubing inside the tank and the service water to the inside gas fired hot water tank goes through this coil and extracts the heat from the tank so there is no connection from the water in the tank to the hot water used in the house. There is a very small low powered ceramic pump that circulates the water from the tubes to the tank. In winter there is sometimes a lot of cloud cover here so the water doesn't get heated. We get temperatures down to -20 F and the system has not yet frozen. My tubes are the cheaper version low pressure tubes. You could describe these tubes as being like a coffee thermos. The inner tube coating absorbs infrared radiation from the sun. If you left one of those tubes outside in sunny weather even at 30 below zero the water in the tube won't freeze. In fact there would be steam coming out the top in bright sunlight.
It is good work. Is it necessary to concentrate the solar radiation? I have been studying about the impact of nanofluids on heat transfer from solar radiation. I need practical work on this kind of experiment. In addition, like in Kenya, in Ethiopia, there is excess sunlight throughout the year. Please, if you have such kind of project, let me know and participate in it. Thank you so much for such an interesting video.
3:07 So the convection is a counterflow within the same tube? Cold water flowing down / hot water flowing up at the bottom half / top half crossection of the same tube, the flows meeting in the middle... without mixing?
Dear Sir, you have explained the system very well. My small tank was replaced with pvc pipes by the plumber during that time he said the two pipes are leaking. Now he is not coming to repair.I have three hundred liters solar water heater having 30 tubes, two tubes are leaking. How to change washer and measure size, please explain.
In such tubes, the alcohol never leaves as it is sealed in. When temperatures cool, the gaseous alcohol condenses into liquid alcohol and the vice versa happens
I would suspect the build up of limescale would be of particular concern. A low cost solution would probably be to add to the tank citric acid and flush out thoroughly.
Thank you for a great presentation i now understand the difference. I recently purchased a high pressure system. can you explain what happens if I don't use the water heater in a day or 2? if I am not at home I was told that the pressure will build up and could damage the water heater.
@@PropertyNoma thanks for your reply, there is a pressure release valve on it. I was thinking I could cover the solar tubes if I am going to go away for a long time and turn off the supply of cold water to it. Could that help?
Hi, how much is 200l tank, evacuted Borosilicate Glass tube, stainless steel, high pressure solar water heater? All information from your video. Am a woman with no knowledge from this topic and am currently not in kenya but building there. Niambie please before nidanganye price na fundi mwenye amesimamia mjengo.
Sir, on the high pressure system, when the alcohol flashes off, it’s there any way to force this vapor through an orfice into an evaporator as in a refrigerator?
Howdy I’m concerned about the glass tubes getting broken if hit by a rock or something. Can the tubes be covered with a glass pane and still be functional? Thank you very much
High water pressure from your local municipality can direct water into the system without a pump. Or you can put up a storage tank above the solar heater to direct water through gravity. But this option will need a pump to take water into the storage tank
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
You're the 1st person who clearly explained what the difference between a low & high pressure system is
they use Assistant tank. That means the system is Low Pressurized or Non Pressurized solar system.
You could have a low pressure system without an assistant tank. It would have an electronic switch to regulate the flow of water into the tank.
@@Mramoyaw23 That's one of the way. And also It seems the system didn't use magnesium rod. correct?
Very true. From India
An exact explanation, for everyone's understanding, something rarely seen on RUclips. No off-topic footage, no uninteresting things, just what the title says. Congratulations from me.
This man is a star. Watching from South Africa.
This is THE best video about solar heaters I've seen. There are too many others from India and Pakistan but they just go with installation, begging for subscriptions and shares etc etc..
Your video is well categorized, TO THE POINT information and that's it. Others should Learn from you.
Thanks, From Pakistan
Thanks
Just used one of these a few days ago while visiting in Mexico and was amazed by them, but couldn’t understand how they worked. Now I do! Thanks so much for making this video!
This is the most accurate description I have seen so far! Well done.
Greetings from South Africa - this is the bets explanation ever . Here we have many Retrofit systems - evacuated tubes connecting to the existing geyser inside the house.
Thanks for your kind words!
Fantastic explanation. Uncomplicated and simply laid out for the "didn't know"people like me!! Presenter with a delightfully humble style.
Glad it was helpful!
Well done to you for a great explanation! Absolutely perfect description. Thanks for explaining and sharing your knowledge!
Big up man, you are indeed a professional, simple and professional explanation.
Fantastic. Very clear and nice explanation of the systems and thanks for clearing the difference between low and high pressure system
U are just the one I fill left out that I hadn't subscribed to the channel earlier enough ...precise n informative explanation
I have 2 low pressure tank for total of 300 Lt of hot water ,I got my system almost 25 years ago and still going strong even if 2 tubes have lost their black colour (have to change them soon....wouldn't change the system with anything else.
Small downside: the 3 top floor has less pressure the the other 2 floors but still the best/simple system out there.
Among the best detailed explanations on how this works, congrats, quite detailed.
Thanks, glad you liked it
i use 4 x HP tubes do add heat to my koi pond for winter having built a simple cycle system myself with a relatively low flow rate and using simple pvc tubes and large dia pipe for the small tank. still working out the kinks but its a cheap easy way to heat a koi pond slightly to try to keep 3000 litres close as possible weather depending to 20-25 deg c. great video good to the point presentation etc
Thank you for the careful explanation - I'm very curious about temperature performance during rainy season, where there may be cloud cover and only a few hours of direct sunlight per day... if at all.
By far, this is the BEST solar water difference explanation on the internet that I've seen so far. Well done sir, hats off to you.
Wow, thanks!
It works. I installed in Peru, south America. Thanks for the info
Awesome
Very good video. Clear and easy to understand.
Thanks - very clear and understandable. Answered a lot of questions.
God bless you too
We have Viessmann vacuum tube solar hot water system in conjunction with our boiler and a super insulated water tank. On the west coast of Canada it works amazing even on over cast days. We use solar power for the pumps since our tubs run horizontal and the tubes are set at the optimum angle for our latitude. This way the system sits tight to the roof and out of sight. I can see how a low pressure system could make a great for off grid shower.
You really know how to explain how the whole system works
you should look into it ...very important
I need to attend one of your installations and learn there..
Brilliantly explained Thank you!
That's the way of explanation I like it buddy it helps me lot. ❤ From India. Keep it up.
Very well explained, answered many of the questions I had about these. Thank you. 🔥
very nice presentation - comprehensive description.
Great explanation. Easy to understand thank you Nick , at least now I have an idea of what I want.
You did a great job explaining the working process of the solar tanks.. thanks a lot
You're welcome Eric
You deserve more subs. Great content.
Sending Thanks and good wishes from Bangladesh. A very well detailed video.
Thank you for the video. Hard to find info on passive solar water heater here in US.
well explained Mr. Noma thank you
Now here in Zambia dose solar geyser working properly during cold season
great explanation, i already installed a unit at my house it works great at the sunny days but it rarely reach 35 degree during cloudy and rainy days, i wonder if you can use an alternative light source by night like strong projector , will this work ? and did any one try to put a source of light exposure to the tubes?? please let me know , again thank you all.
I've got an unpressuriesd 24T 200l system. I've just put a temp sensor at the bottom of a tube to see the water temp stratification in the night. Its still freezing outside so no water, but the temperature grows immediatly over 128C (max sensor temp) in sunlight and takes around 3 hours to fall to ambient air. Good stuff, cheap, but hard to install. I've removed with no problems a tube with water inside last year.
I plan to calculate a liniarity between tank water temp and tubes so I'll know when it's safe to fill or drain earlier in the spring and farther in november and maybe install a low power heater for that .
Thanks for the info Samuel
Thanks for the info Samuel
Brilliant, you should publish the information somewhere and drop a link.
Am looking to install one, and I've learnt from two of your videos. Thanks.
thanks for the detailed video. Clear and touches all aspects..
Thank You for the Clear and concise explanation!
Glad it was helpful!
Very well-presented.
Amani brother!!!
Thank you from N.America...😊
Comprehensive explanation
Yes, I recently installed one. Thank you❤
Thank you so much for sharing your knowledge. Much appreciated
You make it so simple.
Thanks Gareth
Nick I am very new at this and have purchased two solar panel water heaters for a home at a beach front house. This house is located at latitude 11.95ª North, hence we have sun all year long. The Panel will be placed in the south to north direction and the roof has a slope of 10ª form north to South. In your experience at what slope from the horizontal do you recommend we place the panel tank to guaranty we have optimum convection flow from the tube to the tank. Thank you.
Thanks for the clear explanation, a first for me, I'm greatful
Great job Nick!
Very Informative Sir, Thank you for sharing, i've learned a lot.
I enjoyed watching your video. You really did well.....big thank you.
I am a Ugandan and i work as a natural gas heating engineer installing heating systems in the uk.
I have always wondered why our homes in Kampala don't have such evacuated heating systems.
One thing I would like to ask you is the risk of legionnaire contamination in tanks. Is this something anyone have experienced in African using this system?
Many thanks
I have no idea about legionnaire contamination.. Could you elaborate more on this?
Great explanation of the solar heating system 😇
You did a great explanation, thanks from MX
I have an Evacuated Solar Tube system I installed in 2007 here in south western Canada. The solar tubes are only connected to a manifold with no storage at the top. I have 4 panels of 20 tubes each. The hot water is circulated into a 160 gallon stainless tank I have fabricated. It is basically open on top with an insulated lid on it with insulation on all other sides. I coiled 100 feet of copper tubing inside the tank and the service water to the inside gas fired hot water tank goes through this coil and extracts the heat from the tank so there is no connection from the water in the tank to the hot water used in the house. There is a very small low powered ceramic pump that circulates the water from the tubes to the tank. In winter there is sometimes a lot of cloud cover here so the water doesn't get heated. We get temperatures down to -20 F and the system has not yet frozen. My tubes are the cheaper version low pressure tubes. You could describe these tubes as being like a coffee thermos. The inner tube coating absorbs infrared radiation from the sun. If you left one of those tubes outside in sunny weather even at 30 below zero the water in the tube won't freeze. In fact there would be steam coming out the top in bright sunlight.
Thanks John for such an informative comment. Learned a lot from your DIY project
Water heater and solar heater among the two which one is the best
great video, thank you very much!
very well explained
Thanks for liking
You explain very well. Thank you
You're welcome
It is good work. Is it necessary to concentrate the solar radiation? I have been studying about the impact of nanofluids on heat transfer from solar radiation. I need practical work on this kind of experiment. In addition, like in Kenya, in Ethiopia, there is excess sunlight throughout the year. Please, if you have such kind of project, let me know and participate in it. Thank you so much for such an interesting video.
Really informative thanks you
Thanks bro for your explanation
Perfect presentation 👌
Very informative thanks
Good job bro !
Thanks for this. I had never heard of this before.
You're welcome Robert
3:07 So the convection is a counterflow within the same tube? Cold water flowing down / hot water flowing up at the bottom half / top half crossection of the same tube, the flows meeting in the middle... without mixing?
Dear Sir, you have explained the system very well. My small tank was replaced with pvc pipes by the plumber during that time he said the two pipes are leaking. Now he is not coming to repair.I have three hundred liters solar water heater having 30 tubes, two tubes are leaking. How to change washer and measure size, please explain.
Very good explanations
HOW to calculate heat loss tank coefficient ???
Great explanation!
Nice video, well done.
Thanks
How does the alcohol get back in the copper tubes after evaporation
In such tubes, the alcohol never leaves as it is sealed in. When temperatures cool, the gaseous alcohol condenses into liquid alcohol and the vice versa happens
What about if the hot water is coming from the assistant tank what do uu do
Excellent explained. Thank you!
Thanks
Great video, thanks
Thanks a lot
Can ppr pipes do the pipe fitting of the systems??
Yes they can
Big up, we mzee 🤝🔥
Thank you for an excellent job. 👍👍
Thanks dude😊
Sir, I am thinking of a Physics Project with my students and we would love to make use of Evacuated Tubes. How much is the cost of one of this tube?
Hi, team
How to clean it? What is cleaning maintenance?
I would suspect the build up of limescale would be of particular concern.
A low cost solution would probably be to add to the tank citric acid and flush out thoroughly.
Thank you very much
Good job
Thank you for a great presentation i now understand the difference. I recently purchased a high pressure system. can you explain what happens if I don't use the water heater in a day or 2? if I am not at home I was told that the pressure will build up and could damage the water heater.
As long as there's a pressure release mechanism I think your system will be okay...kindly consult your local solar heater technician for clarity
@@PropertyNoma thanks for your reply, there is a pressure release valve on it. I was thinking I could cover the solar tubes if I am going to go away for a long time and turn off the supply of cold water to it. Could that help?
@@zavnet I'm not really an expert of solar heaters but I think that can help as long as it's only a few days.
Can you also cover how to do raised foundations on black cotton soils?
If I get a site with a similar issue, I'll make a video in future.
Waiting for this content too🙏
Hi, how much is 200l tank, evacuted Borosilicate Glass tube, stainless steel, high pressure solar water heater?
All information from your video.
Am a woman with no knowledge from this topic and am currently not in kenya but building there. Niambie please before nidanganye price na fundi mwenye amesimamia mjengo.
Good work bro
Sir, on the high pressure system, when the alcohol flashes off, it’s there any way to force this vapor through an orfice into an evaporator as in a refrigerator?
I am sooner install one for higher pressure like 2ool Ian water engineers. thanks
Fantastic
God bless you too l like it
Thank you for sharing
You're welcome
You are a SCHOLAR. Watching from Nigeria. God bless you. Application of the topic Modes of Heat Transfer.
(Jed kin ) has a very good intersecting comment this system we can us it to convert salt water into drinkable water.
Howdy I’m concerned about the glass tubes getting broken if hit by a rock or something. Can the tubes be covered with a glass pane and still be functional? Thank you very much
Maybe if the glass pane is transparent, but I think it will negatively impact the heating capacity of the SWH
Well done 👍
Thanks a lot sir.
You're welcome
Can I use 0.5 pump before solar tank can the glass resist the pressure ?
As long as there isn't too much pressure, the glass tubes will heat the water adequately
You need a building with lots of use of hotwater, kitchen, big family etc.
Good video! May i asked how to get cold water up to a roof installed low pressure system without using a pump? Thank you!
High water pressure from your local municipality can direct water into the system without a pump. Or you can put up a storage tank above the solar heater to direct water through gravity. But this option will need a pump to take water into the storage tank
Not possible
Without pump?? Take one bucket and go there to fill it Manually