Fresnel Lens Solar Distilled Water from the Sun
ฝัง
- เผยแพร่เมื่อ 20 ต.ค. 2024
- Fresnel Lens solar water filtration systems offer an off grid option to clean water This solar distiller can deliver .5 GPH The Fresnel lens concentrates sunlight to a common focal point that creates a steam boiler allowing for rapid distillation with the sun.
greenpowerscien...
If you are concerned, add 10mg Na to each liter. Also, eating food with water, all minerals are mixed with fluid in the stomach converting distilled water into mineral water. Distilled water is not magic, if you add a splash of milk to tea made with distilled water, you now have 10x the calcium of regular mineral water.
www.eves-best.c...
Distilled water is very good for you. The only areas it may cause a problem is developing nations that have near famine conditions. For the rest of the world who usually ingest 15x the sodium recommended, distilled water leaches salt first. ONLY IF you are salt deprived (extremely rare) will distilled water leach excess potassium and or calcium.
You would need to drink about 2 gallons in 10 hours for there to be a problem.
If heavy sweating, water of any kind is only a thirst quencher or temporary fluid fix. Most people can afford 7 pounds of sweat (near gallon) replaced with only water before electrolytes become an issue. At that point, electrolytes are needed regardless of water type ingested. Mineral water has very small trace minerals and represents a small fraction of where K, Na, Ca is absorbed in the body. For you to get your average daily requirements of Ca and K from water alone, the water would taste terrible.
Spot Fresnel Lens
greenpowerscience.com/SHOPFRESNELHOME.html
What is the difference between the linear and spot lenses?Good video but that lens kinda scared me at the instant fire....
What Is Islam?
Islam is not just another religion.
It is the same message preached by Moses, Jesus and Abraham.
Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God.
It reminds us that since God created us, no one should be worshipped except God alone.
It also teaches that God is nothing like a human being or like anything that we can imagine.
The concept of God is summarized in the Quran as:
{ “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)
Becoming a Muslim is not turning your back to Jesus.
Rather it’s going back to the original teachings of Jesus and obeying him
@@ahmdabdallah5811 Mohamed, Gandhi, Jesus all great men who would not abuse their wives
@@willow9530 looked like a normal bedroom mirror to me
THANK YOU FOR ENJOYING OUR WORK.
3 yrs later and going on my own projects i must admit that dan rojas was/is my first mentor in greenpower science. And if in doubt i always come back and seek more info. His prices are still to high for my mexican wage but i saw the diy linear to spot video so mabey i can do that one day, eithet way thank you dan i been a subscriber from the early days.
Yes, just make sure the pressure cooker is venting properly. Since you are using fossil fuel, make the copper tube longer with a few loops and submerge it in a small bath of room temp water. This will make it more efficient and you will collect more water. Also boil your water open for 5 minutes before starting the distillation process. This will evaporate any low boiling chemicals.
This version in this video is not very efficient since we are using the sun, it is simple and no power needed.
You mention that this could be scaled up easily. Could you create a video on making a system that could handle the drinking water needs of a household, or a community? Would love to see that. (you don't have to build it, of course, just explain with words/ diagrams, etc.) Maybe that info already exists and you could just give links. Thanks for all the vids. You guys do a great job and I am a big fan.
So far ahead of almost EVERYONE on TH-cam!
The size of the lens to the target is what makes it work. All magnifying glasses/Fresnel Lenses/Parabolic Mirrors concentrate the sunlight vs amplifying it. So if your lens is 2 times the size of the target, you can boil water in about 8-12 minutes. 4 times larger would be about 5 minutes. This is about 60:1 ratio.
Yes, if you have clear sun, it is the same. The cold will leach your temperature builds faster but the intensity is about the same Winter or Summer. Winter actually seems to have a clearer atmosphere so in my experience it is better.
Thank you for the nice comment. Minerals are required for sure but most diets have way too much sodium so it is only an issue for restrictive diets or during excessive perspiration. We drink about 10 gallons of distilled water a week. But also drink regular water and LOW SODIUM v8 juice (has the perfect potassium to sodium balance) Also a drop of milk or distilled water ingestion while eating basically makes it mineral water.
Check and see if the Fresnel Pattern is in the center or at 1 corner. Some small Fresnel page mag. Are actually cut from a larger sheet so you can place 4 together. If it is a center spot, you can only have 1.
The landing light system the US Marines have used a lot of these lens. We trashed cases of these that had had scratches and didn't pass QA
Thank you for the comment. The Fresnel Lens is just short of 1 sq meter so it is about 800-900 watts of direct solar thermal. The bottle is not efficient so the water is receiving 600 watts +.
Feeding the pipe becomes an issue unless you have a pump attached. Also the sediments should stay on the bottom. A Stainless steel container will work. Even if it is somewhat shiny, the lens can still give toms of heat. The glass bottles were used because they are easy to find objects. Linear lenses will not break a glass bottle filled with water, only empty, so they would work good if you are patient.
The focal point is the instant danger and that is not likely with a simple reflection. Staring at lighter objects can cause injuries similar to welders. Eye protection is recommended especially when working on glass or melting metal.
Distilled water will not harm you! Your body doesn't know where your minerals are coming from. Copper has never been the problem, in fact it has anti-bacterial properties! The copper scare is from the old days when it was soldered together with lead. Copper=good for you, Lead= not so much.
copper will sooner or later make you insane, they used to use copper in bath houses in roman times, at some point you'll get copper poisoning like wilsons's desiease.
The reason they banned lead in the paint is it blocked out their (elites) future plans to harm......
@@willow9530 you mean the Republican NWO Bush and Reagan? bush came out on national tv and states they were deep state.
@Mattx... Either party. The end result is the same. Just a different approach to get there.
@@willow9530 naa only the conservitives are the bad guys.
GREAT VIDEO. I really appreciate you addressing the pathogen issue. I've seen many similar videos where it is not mentioned, after all, that is the entire reason to distill the water in the first place.
Yes, just make sure it does not contain any lead mixtures.
I'd love to see a follow-up video where you get the desalinized water tested for salt content primarily, and any other standard drinking-water quality tests that exist.
backyard scientist i show your videos to my 2nd graders the light up like fire.....you are awesome...
Just one thing... You cannot say that UV light is going to kill bacteria if you are using a Glass bottle. Remember light at that particular wavelength (around and under 400 nm) will not go through it (it gets reflected out). It will be better if you use an alluminium base container
I think for an even finer product you should even cut back the power even more. I have a counter top distiller and it only gently boils the water so that the steam does not pick up any other particles. which may or may not have been what you experienced with the sediments in your final product.
Jacob E that's what a thumper keg does on a still it eliminates the settlement add a thumper keg and no more sediment
Thank you, this video was compressed differently. I cant change it without reloading. Thank you for the info.
It is good for drinking if you have a balanced diet containing Calcium, Magnesium. Sodium is usually consumed x 5 so distilled actually helps reduce Edema. If you eat food containing any of the above while drinking distilled water, it becomes mineral water in your stomach. It should only be avoided in large volumes and in regions with naturally low minerals in their diet or as a fluid replacement alone after heavy sweating or during dehydration.
144p we meet again >:)
2024
Some yes. If you have a high concentration. Distill then run through CARBON BLOCK filter. The distillation will extend the life of carbon filters by 10 times.
Also boil water open for 10 minutes before distilling. This evaporates many VOC with lower boiling points.
Thank you for the comment:-) This process of direct heating is very efficient.
You can but need mirrors to redirect the sunlight as the lenses only concentrate. sunlight travels in a straight line unless you use mirrors. See the Desalination videos I have, it shows multi lenses in use.
Why can't this principle be used at an industrial scale to desalinate seawater practically for free?
I've been talking about that exact thing for many years... Is humanity truly so feeble-minded that this hasn't been considered and adopted? Every day I see news headlines about nightmarish droughts and water shortages and I can't help but want to scream, "OUR PLANET IS OVER 70% COVERED BY WATER! THERE IS NO SHORTAGE!" The only big obstacle would be deeply landlocked and remote areas, but, COME ON, we have no problem building massive pipelines across the world where oil is concerned! Why not do this with life giving water? There's enough water in the oceans and seas to turn every desert on Earth into a thriving oasis without even impacting sea levels. People just don't seem to grasp how wet our world is.
Reply to BioORII:
This principal could be used to distill any type of naturally occurring contaminated water, including seawater. The quantity of purified water produced would be limited to available sunlight and the scale of the desalination plant. There would be maintenance required for this type of plant, as salt and other minerals would be deposited in the "boilers" as the desalinated water exited as steam enroute to the condensers. These minerals could be used for other purposes as well.
However, governments around the world have begun "brainwashing" the population that there is an impending water shortage. The last thing these governments want, is for the population to procure fresh drinking water, at very little cost, without dependence upon their governments for that water.
So, it would be best to focus upon small-scale production of clean drinking water, since any large-scale persuit would likely prompt them to kill you.
And how exactly would you REPLACE the sea water?????? Use up all the ocean water instead of moisture in the air?
you don't. Water evaporates from other sources and then returns in form of rain or through rivers. Sea water will maintain a similar volume anyway.
You could even have mother nature do some of the work for you by using brackish sources of water. Pick an inlet on the sea and take the water from further up the inlet. The sediments and plant life will naturally extract some of the salt for you, making desalination easier.
We already have the capability of doing this with solar thermal power plants. In most solar thermal plants, mirrors heat a tube of some type to warm a thermal transfer medium, often a type of synthetic oil. This oil goes to a heat exchanger where it boils water to run steam turbines and make power. We could theoretically do the same thing with sea water in those exchangers, but produce drinkable water instead of electricity. Sell the resulting sea salt to offset some costs. Dump the water into ground water storage tanks for use later on, or output the clean water into local reservoirs. It requires no further treatment after desalination.
If you are in quick need yes. If you have other options distilled would be better.
@johnny102marvin You can remove a lot by open boiling for 10 minutes before distilling. They usually evaporate first.
@BJ219 You can scale up and the bottle needs to be a dark color, clear will not work at all.
Yes, I am running tests on ocean water. If I can get it to a low voltage test, I will post a video.
The copper usually does not leach in larger amounts. Stainless steel tubing is a much better choice. Hard to bend and expensive. Most old school stills had copper. Copper is an essential mineral unlike lead or mercury so is not stored as much. I would suggest the stainless if you will be drinking the water on a daily basis.
Distilled water is very good for you. The only areas it may cause a problem is developing nations that have near famine conditions. For the rest of the world who usually ingest 15x the sodium recommended, distilled water leaches salt first. ONLY IF you are salt deprived (extremely rare) will distilled water leach excess potassium and or calcium.
You would need to drink about 2 gallons in 10 hours for there to be a problem.
Linear lenses are safer in regards to instant burns etc. Both lenses and any solar concentrator, even a high quality shaving mirror should be kept away from sunlight and window when not in use. If you do get a lens, just make sure you get in the habit of not touching things. Boiling the water will work for emergency purposes but long term ingestion would depend on what else might be in the water. Many people have survived on mud water strained through a shirt. Stay safe Thank you for the comment
HI DAN,
This was 5 gallons which is tough, smaller amounts work.
Do not place your hand in the beam. It is like cooking, you can place stuff on a hot burner without cooking your hand.
The UV treatment is optional and really not necessary, I wanted to illustrate that clear glass and clear water will not boil, but debris will be zapped.
With out a lens, the bottle would never pass water to the other container. The bottle alone would yield about 1/4 oz - 1 oz a day. You would need water on a large surface with a large plastic roof to create condensation.
They differ from lens to lens. I have found that lower LPI actually works better for solar collecting down to 30LPI
Excellent: I want one of those lenses! A couple points: I wouldn't count on the first step to kill much bacteria through UV. Both glass and plastic (which looks like the material of your lens) transmit UV very poorly. Also, I would suggest starting the distillation with a bottle only half full, to avoid blowing unpurified water through the tubing when it starts boiling. Sweet setup though...
16" is the smallest for boiling water. Anything smaller is just not enough sq ft. of sun. Search this "ROUND FRESNEL LENS ON A STICK 2" it works very good, boils 12 oz. in 3 minutes in a brown bottle.
I have been collecting fresnel lenses from old overhead projectors ... 4 so far ... now I'm looking for project designs and ideas. Great video.
Yes,
I have a video on that:
5GhkOnEO3X0
Long series and a bigger tank. It would work for this setup too.
Concentrated sunlight is very powerful and can handle small volumes of liquid rapidly.
This gives the fastest result I have seen so far
Not if you allow it to boil open for 10 minutes, they evaporate first as most have a lower boiling point.
After 16 years of publishing this video it came handy cuz i work in the border of my country and it happens that the only available water is from a well and it's salty and full with bacteria that makes u harsh ... Thanks alot
You need to let it open boil for a about 10 minutes. Also try making your copper tubing longer.
I like the potential ease of use in survival situations that these lenses could offer. I wonder if you could offer some insight with your experience with these lenses. At what volume of water does the attempt of boiling it become impractical? i.e., involving multiple lenses in cumbersome setups. If, say, I utilized only one large lens (you'd have to specify which size would be most appropriate) how much water could I potentially disinfect throughout a clear sunny day? Would it be most appropriate for providing enough water daily for a single person, or multiple?
Chemicals pollutants like gasoline evaporate as well, but evaporate before the water. As a precaution, just allow evaporation for a little while before attaching cap and hose.
I'm building this setup for my RV as an emergency backup for cooking and distillation.
What if you set up MANY Fresnel lenses, rigged with sun-chasing mechanisms to align with the sun all day, along a mile-long copper pipe, which is mostly encased in thermal insulation, so by focusing these many lenses on exposed sections of the pipe, you can pump air into one end, so it will be superheated, and come out the other end of the copper pipe, like a BLOWTORCH, for industrial scale operations involving great heat?
@Soldier957 Yes, UV as well as IR are blocked by glass. However, it does not usually block all of it. One can take a piece of window glass and hold it between a heat source and your face and you will notice a definite effect. Some of the heat does get thru. Another material that may be used is acrylic plastic sheet. This does not block as much, if any.
Could you not use a metal container to use as a boiler and not worry how fine you focus the focal point?
Yes, I was worried a bit at first. felt fine. Thank you for posting:-)
Not a concern really, but I am using stainless for the newer one, pain in the butt to coil/turn.
I really enjoyed your episode on Dooms Day Preppers as well as this video.
fawn montelongo Thank you for the nice comment Fawn.
GREENPOWERSCIENCE
where you buy your fresnel lense. I want to use it as a oven. price and average temp in a sunny day?
someone, find an old 3 gun big screen TV set out for the trash and you get the lens for free.
@@arttrombley7385 Actually what you'll usually get out of those TVs are inferior linear lenses that don't perform anywhere as well as these lenses Dan sells. I have taken numerous lenses out of those TVs over the years. I have 4 different size spot lenses from GreenPowerScience as well as 5 parabolic lenses and a tracker, among other things.
These are by far the best quality lenses I've found anywhere and the mirrors are the best I've seen, as well. I've been making solar cookers for years as well as other inventions, from solar hot water heater to snow melting. I even have a bunch of lens scraps that I bought for cheap in large quantity from his site for other projects.
Nothing, I mean NOTHING-comes close to outperforming Dan's lenses and mirrors, in fact ALL his products. So yeah, you can get a floppy, low quality, linear lens, that can't hold a candle to Dan's linear lenses, but it's not worth it in my experience. I saved enough money in 1-3 months, in electricity and natural gas, to pay for the product I bought, each time.
Thanks Dan! From Amy in BC Canada.
Go to my website and click on the Fresnel Lens Link. There is a page explaining the difference in relation to solar. Crystal Clear lenses are manufactured differently. They allow more light to enter the project. More heat.
yes there are filter sytems useing a simple fish tank filter sytem but from an old boy scout sytem is to hang three neck scarfs with grass sand and burnt fire wood then to boil the water for 30 minutes on a camp fire but a Fresnel lens could do the boiling in a few minutes
It should work. I was thinking of a porta potty - got grossed out with the thought.
Thank you very much. After my comment, I realized that of course it has been done. I had just not seen it, and was a little over excited about the possibilities. I thank you!
Thanks for always making informative videos. Realy enjoy watching. Here in South Africa the drought has hit us hard for the last 2 years due to the elnino effect. Although the elnino tide is turning our dams are
still at a critical capacity some towns are without water and people are fighting and rioting over it. We have 3 months till winter and when the winter hits we get no rain at all. why cant they build a rig on the coast that will use evaporation to desalinate the water. Most days even in winter we have hot sunny days to allow this to work.
I love what you're doing here Dan! We live in the Southwest, and your ideas are really helpful. You should move here. You'd have a lot more fun because you wouldn't have to wait for the clouds to pass every time you did something. ;)
Nicely put. Thanks for sharing your videos. I also like how you didn't cut out the scene of the glass shattering. It was good comic relief. :)
That was a surprising and impressive demonstration. Thanks!
Nice video! Fun science. So a quick question or two. I boil sap each spring for maple syrup. I'm wondering if I could use the Frensel lens set up to boil sap effectively. I use a 5 gallon pot over a propane burner now. Would you suggest I use a spot or a linear lens focused on the sap in the pot? Also, the price for the lens is a bit steep for me. Where might I salvage one? Thanks!
What a great learning experience.
May I ask a few questions.
1. Where would you buy such a lense
2. Would a large magnifying glass work
3 would this work with salt water.
4 have you made such a device with steel drums?
I will Google this some more.
Thanks for sharing.
You could use a metal can to boil the water in. Focus the lens on the bottom, where the water will be until the end. Instead of a lens, you can coat an old, big video dish antenna with foil, and point it at the sun. Hang the can near the focal point. Use a smaller diameter copper tube, with more length, even coiled, so it has more surface area for more rapid cooling. And you could introduce a slow drip of dirty water into the heated can so you have a continuous distilling process, that can make you several gallons of clean water per day. All without that really expensive Fresnel lens.
Your videos are always a great learning tool but, with this one, I sure wish the volume wasn't all over the map
Connect it to the radiator that's sinked in cool water, that you can have more condescension. Some of the water is evaporating. Probably you're having less recovery.
Fields of these in the deserts could solve water shortages and stored in water towers to avoid evaporation
First, common glass blocks UV light. Is the lens glass? The bottle certainly is. That soup you start with is NOT sterile.
5:08
You super heated the liquid! Scratching the inside glass a bit or adding some boiling chips would keep this explosion from happening. Good boiling chips: PTFE (Teflon) but charcoal might work here, too. They provide nucleation sites for the vaporization of water.
@LACSMOB because most of the light passes through the claer glass. The darker coloured bottle absorbs alot of the light.
@johnny102marvin Actually that completely depends on the boiling point of the contaminants in question. They would have tg be pretty darn close to 100°C in order to come off at the same point as water.
If they have a lower bp they will evaporate first so as long as you only collect the steam after the water has boiled then you will be OK.
If the contaminants have a higher bp than water then they will not evaporate until the water has all evaporated first.
I would have liked to see him measure the total dissolved solids in the water before and after.
That frensnel lens is enormous! What size is that and from where did you get it?
Stainless Steel fire extinguisher for heating the water? I use one with a wood burning pit, copper line into a S/S tea kettle. I recently got a lens from a big screen and was wondering how you mounted that overhead. Did you back that with a piece of glass for support? I find that the lens it is quite flimsy by itself.
The distilled water can still have harmful stuffs because some of the nasty stuffs dissolved in the dirty water can have steaming temperature lower than that of water.
Glass blocks most UV rays. Try using a clear plastic bottle or a container made of quartz glass.
@MasterUndead225 Yes, it would, but only for a few seconds. The water on the cloth would quickly evaporate, and then the cloth would ignite and burn away from being in contact with the hot pipe.
Great post..... why isn't this being done???
you need a charcoal filter at the end to filter out any VOC's
@acedagaiin Distillation will not remove radioactive particles. However, as cited in the vid you linked, reverse osmosis can neutralize some of the radiation.
then there's sea water and "hard" water ( as in lots of minerals in the water, it happens here in oz).
Are you using a fresnel lens from a big screen television or did you purchase another type?
I did not want to go off-topic, but the first thing I thought when I saw that water boil was a steam engine. It could turn an alternator and store electricity in batteries. Would this be strong enough to accomplish that?
If so, here in New Mexico with plenty of sun, and a stream or river, you would have the resources to create Massive amounts of energy! Incredible.
Egregius didn't dole out an absolute, glass only filters out some UV, depending on the type and thickness of glass. Stand under an Arc followspot for about an hour without the UV filter but with the 3 thick lenses, you'll get sunburned. A mason jar isn't going to block nearly 100%
man im planning on living by the beach and off'grid.. you solved my water puryfing problems!! thanks
How U livin' ?
@GREENPOWERSCIENCE LOL! I seen that moment just before your first sip. It was the, "Please don't let me get sick off this...."
It would heat up faster if you spray painted a small 2'' round circle at the focal point...
Just wondering Josh - is the water piped throughout your house not done by copper tubing?
What is the smallest heat source, ie. Fresnel or parabolic that is small enough to travel with but boil your Teavana with steel wool example? I see you were boiling the blue glass, but could we paint your Teavana black on the walls and keep bottom clear and direct the parabolic focus to the bottom of the bottle. Would that work?
Interesting as always - if only somebody *would* scale it up!
A few comments: firstly, you'd probably be better off with a copper still than a glass bottle. Secondly, adding a mechanical filtration stage would remove the sediment more effectively: a simple coffee filter can be most effective. Thirdly, be careful drinking distilled water: it has little or no mineral salts in it, which has the potential to cause electrolyte poisoning.
Why use a glass bottle that will break on you? Use a black cast iron tea kettle instead.
TheMittster We use both, this is a simple example. New videos incorporate solar evacuated tubes that are much more efficient.
th-cam.com/video/JkgFk15uBxw/w-d-xo.html
TheMittster
I thought he did that to show the water boiling, but you're absolutely right.
dude i love ur vids :D have u tried this with sea water??
Very nice experiment/demonstration. I'm almost afraid to ask, though: How much is a fresnel lens of that size and quality?
Its also a nice thing if you can distill ethanol using the lens... Just leave it under the heat of the sun, you can make ethanol...
How about you use a clear bottle with the stainless steel wool instead of the blue bottle? Hopefully that wouldn't break so easily. I also wonder if you setup a siphon from your first bottle to the second how much more water you could get through this system. At the very least it should help keep water in it so the bottle wouldn't get fatigued so easily and break.
awesome dude... i think I'll give it a go... we dont really have such good sunlight though.. have you figured out the equivalent wattage going into the bottle?
So basically, we can use rainwater and do the same thing?
dan you sound is swithing up to one sided mono and flipping back. then it headfs back to stero. Thank you for posting this video.