I've seen these before and on first thought they seem very good, but plastic bottles deteriorate in UV sunlight, and now these people have a big hole in their otherwise contiguous roofs. Even if a glass bottle were used, which would be much better, that hole is going to leak sooner or later.
+Bill DeWitt plastic bottles are plentiful. It can just be replaced. If you'd seen the video of people talking about this in the villages where it's been put out you'd find that people are ecstatic because their other options were to either be in the dark or use unsafe/expensive consumable fuels.
haa.. hold your horses buddy.. we can make it a sort of temporary water tight fixtures.. like encircling bottles with outside threaded rings and packing . when it goes off.. unscrew,prepare and put another..
Glass bottles instead of plastic, put in under an eaves or ridge but still exposed to the sun, would prevent most of the problem. But roof lights are always a problem, even skylights in developed countries require continuous maintenance. The number of holes in a roof (or a hull) should always be minimized.
I guess your opinion that it's cool looking excuses loading down people who already have problems with more problems. That's alright, those problems won't show up until after you have shifted your attention elsewhere. Fine, you guys must be right, 20 years of fixing holes in roofs doesn't allow me to point out any doubts. Go ahead and insult me all you want, it doesn't change the facts.
maybe you could utilize in a different way than placing in main roof...perhaps a room within a structure could be designed with a two-tiered roof placement. By this I suppose I mean the main roof stays As Is for insulation/energy consumption purposes...a gap would separate main structural roof from the interior room's ceiling. The gap would allow lighting to be placed on underside of main roof, while Coke bottles to be placed in interior room's ceiling. This idea isn't so much about alternative energy but rather mood and ambiance ( room psychology if you will ). To put into practical example : Underside of main roof above the individual room ceiling ( gap i described earlier) has red & blue lighting which is absorbed and reflected by Coke bottles placed in room ceiling to give off a certain aura or energy. Some may view this as a silly idea but perception is all we have!
I just recently studied that the Egyptians Found out how to create light in the process of building the pyramids, NATURAL resources for Light and energy has been around much longer than they want to tell us about.
I'd imagine the bleach keeps the water clear and free of bacteria and other waterborne light hogs. Also the the 3rd photo looks so much more washed out because the bottle is the brightest thing in the room and so it got washed out. Just like how you can take a picture of a lit light-bulb close up in detail but in a non-closeup picture it's all washed out.
The Bleach sterilizes the water, ensuring no algae forms, which allows the maximum amount of light to be refracted into the structure. Given the lack of resources in some parts of SE Asia, this is a very low cost alternative to light tunnels which use chrome / reflective light materials on ducts, which are used throughout North America and Europe.
+jeff ross Putting a piece of glass there is almost no difference that not have the glass there at all. the bottle disperses the light in many more directions much like a light bulb. It's pretty clever if you ask me.
+Joe Page, the point was that most impoverished Filipino houses have no windows or interior lighting. The inside of the homes was as dark as night 24 hours a day. This way, they could at least have light in the house during the day for next to no cost.
Your attitude suggests to me that you've got a better idea that you're withholding from us. Please share. If you don't, please shut up.
+Orrian Cheatom I can't find a cheap manufacturer online but I think for about $10 USD you can make a solar rechargeable waterproof light that will run throughout the night when the sun goes down. The light output won't be the same but it'd be decent for a garage, car port or, shed.
Edit: Actually the circuit would have two paths. The charge path would be solar cell to voltage regulator to batter. The light path would be the battery to an infrared "off" diode to to waterproof light.
well if it will take 3 years before the plastic bottle deteriorates at least you get to have 3 years of free light, and then after 3 years just do the process again then again... 3 years is better than nothing, don't you think?
No serious engineer would suggest that. It's just a hole in the roof, if you live in a place like that and want light during the day, open the door or go outside, but don't put a hole in the roof. FFS.
I'm amazed that you seem worried about holes in the roof. These are not western style houses with plumbing, electricity and roof tiles! The windows are closed in the day to keep the interior as cool as possible. Also in the heat and humidity things dry out pretty easily. Spend a bit of time thinking how you educated westerners could improve upon the idea.
+John Weisz ...most of the Filipinos who use this kind of method are informal settler's.. .they live under bridge's ....we're source of light is very limited...that's why,just to survive in this kind of location...they invented this thing.
+John Stock Dude, the people who have this are poor - like poor as in can't pay for electricity. They really wouldn't care if it only works during the day as long as they don't have to light up candles during the day as well to see through a dark room.
Water Concerns : For those folks concerned about the hole in the ceiling. I would chill out. To me, even if it did leak, rain water is fresh water. You could collect it and get yourself an easy source of drinking water. Probably healthier than any drinking water these folks might be having.
No Light At Night : For those of you concerned that you won't have light at night. Again, chill out. These folks don't have light during the day or night. So solving 50% of your overall problem is a good first step.
It will wear down : For those of you concerned about the bottle deteriorating. Relax. This is no different than a bulb goes out in your house. They simply replace and move on.
People in third world countries rarely look at the long term. They are more concerned with their immediate future. This is a temporary fix because the alternative for them is just not realistically reachable. Considering their location and income.
have you guys ever been to the philippines it's sad and i know cuz we went there and were moving there ooh did you guys hear about the phone? it's a camera and a phone to gether when you take pix you go on the web and post it on the web it's about 20,000 peso but in the U.S it's about $500 dollars no lie
Imo if ur using a plastic bottle filled w water and bleach to light ur house insulation is the least of ut worries! I think it'svery smart yet simple and will get the attention of environmentalist and companies looking for new ways to use resources we already have like water. Pretty cool huh?
Maybe for a shack in the bush or something, or would be good for third world countries where the power goes out multiple times a day. Not the best idea for any house with insulation in your roof. If you are using a 2x6 to build your roof it would be ok (which would never pass any building inspection anywhere in the modern world) but if you use roof trusses, even a 20' wide house will be 20" from shingles to ceiling at 5' from the wall, and would be 40" in the middle of the house. We use solatubes, or similar products here to get same green results.
The most amazing thing after this idea, is the sheer amount of ignorance on display from those rabbiting on about windows, using a sheet of glass instead, and asking why it saves electricity... Hilarious.
+jeff ross You see it with an ignorant and entitled point of view. Having never been there, you haven't seen shit. I've been to the shantytowns outside of Manila and Cebu City, where my mother grew up. These people live in a poverty that you cannot hope to imagine as you sit and expand your waistline, gorging yourself on fast food and TV.
This man has created a way of providing daylight in windowless structures using commonly available materials, and he's doing it for free. Homes that were previously unusable during the day due to darkness can now be utilized. What have you done to improve the lives of the poor?
I'm glad to see there are more positive comments than negative ones. I feel sorry for those people who have nothing but negative comments, for it shows their lack of imagination. Just an example of what you can do with this. Since it absorbs and reflects light, you can use it to concentrate light to solar cells if you want to charge your devices when camping in overcast days. It's sad to see first world arrogance leading to negative comments. Have the decency to be happy for those people who thought of it.
+Douglas Girardot Exactly. I keep seeing the same Interesting Engineering posts show up at the top of the "What's Hot List". The instant brick road machine should be working its way up to the top again any minute now. LOL.
+chris louise Try to imagine that how dark a steel shack with no windows and no electricity would be. Now imagine that you don't have money as well. Using materials you can find on the street and an hour or so of work, you can have light in your house during the day. That is far from useless.
I've lived through 2 devastating hurricanes here in Hawaii with no power. What did we do when it got dark? Sleep! Some of you b!tching about not being able to use this method at night obviously don't live in a poor 3rd world country or experienced a lengthy power outage via major disaster.
You should see the lifestyle of those people before you say any bad comment.. For those who can afford to pay electric bill of course they will not apply this but for those less fortunate this is awesome and very helpful.. Good job pinoys!
great idea!proud to be Filipino.This thing maybe funny for others, but for them who need to feed themselves first considered this as one of their fortune.Fortunate to have lights in their uncomfortable places.This maybe temporary because being a true Filipino, we are very much eager to learn & do things that can make our lives better, but of course in an honest ways...This post maybe helpful for others also.
If you have one bright LED light bulb surrounded by a bunch of fiber optic cables you could string those cables to different areas of the house and have them shine the light out the other side into all sorts of things, say a bottle of water, and you could then have a bright light in every room of your house; all running on a few watts of energy that one single LED light bulb uses.. If you wanted to turn the light off in one room you could have a switch that flips a sliding plate in front of the fiber optic cable cutting off the light from shining into the bottle or whatever.. In the day time you could quite possibly use the sun instead of a LED bulb to shine light into the fiber optic cables.
Unfair distribution of wealth, just like in other countries, few are rich, some in the middle but most are poor.This people may opt getting this trash into useful one for they can't afford to buy something. But, don't get me wrong, because they are the one who can stand most in time of calamity for they can start their lives w/out nothing. So you people don't feel bitter if you know you can do it better.