Asked by chunky-munky dude 9 years ago
Asked by chunky-munky dude 9 years ago
Example what should temperatures should we be at be at on lighting and what about lighting, paper, printing/coping etc.
Where can I buy a solar panel in chicago? What is the price for a solar panel?
Anybody ever tried to use a freezer or fridge condenser to preheat water (before sending it to water heater)? I'm thinking about an easy setup; a coil of copper tubing fastened to the condenser. I know It seems insignificant, but given the low cost of the setup, i think it could be worth it.
Asked by jemor143 5 years ago
Of the various renewable energy sources out there, solar and wind are among the most popular. Already windmills are springing up in various parts of the country. This got me thinking, what if you used some of that space on the windmill to harvest some energy. For example, what if you attached solar cells to the windmill rotors of tower to harvest extra power. What do you guys think?
Posted by purduecer 9 years ago
While the color green has been the hue of choice for environmentalists and companies wishing to show that they care about nature, making a product green is actually toxic. Due to the difficulty of making a green dye and all the chemicals that are used, it contaminates anything it touches. So when a product is simply putting some green to make it look a little more nature-friendly, it's actually making things worse. Yay! From the NY Times: Take Pigment Green 7, the commonest shade of green used in plastics and paper. It is an organic pigment but contains chlorine, some forms of which can cause cancer and birth defects. Another popular shade, Pigment Green 36, includes potentially hazardous bromide atoms as well as chlorine; while inorganic Pigment Green 50 is a noxious cocktail of cobalt, titanium, nickel and zinc oxide. The Toxic Side of Being, Literally, Green
Posted by fungus amungus 8 years ago
Asked by manlyman109 9 years ago
This is to spread the word about green clubs. They are a great way to get together with people and talk and do green things that help our planet. They are also a great way to raise awareness to people about our what could be destroyed earth. Great places to have them are libraries, schools, and even meeting places like local coffee shops. Please help start green clubs. P.S. I am not a Hippie or a tree-hugger.
Posted by weirdo62 8 years ago
I want to do green screen effects with a picture, but run into problems since I don't have a green screen. I have seen the XBOX 360 game "You're in the movies" which does this by taking a picture of the background to be keyed out without anybody there. So, as my question states, I want to find a program to do this effect.
Asked by The Nate Dawg 9 years ago
I only have five dollars.
Asked by Brother_D 9 years ago
I will be checking periodically for abuses of this, but I have set the permissions to allow all of the group members to be able to add any relevant instructables that you see while browsing around.
Posted by jauncourt 9 years ago
Could you please tell me how to get rid of the green jelly on my lawn as it is quite prolific in some areas i have just noticed after sipping in it made more so because i'm on a slope, this year after all the rain we have had it is everywhere more so than other years and i really need to get rid if somebody can help i'd be most grateful. Thanks.
Asked by greengage 6 years ago
Im too lazy to really care too much about the environment, but i love recycling things for different uses because im poor and thats one less thing i have to buy. is there a word for this? if you cant think of one feel free to help make one up. thanks
Asked by dannemillerd 8 years ago
Last year I bought a 5mw eBay laser (green 532nm wavelength) and it had an adjustable focus. I scratched the lens and it never focus right so I took the lens off. Now I am interested in fixing it again and I don't know how to get/make/buy/obtain a new lens for the laser. It always said it was 5mw but I think it was more powerful because it could burn through bags, light leaves on fire, pop balloons, light matches at 6 inches. This is what the laser looked like. http://www.ebay.com/itm/High-Power-Military-Adjustable-Focus-Green-Laser-Pointer-Pen-5mw-Silver-/281269467436?pt=US_Laser_Pointers&hash=item417cf7792c
Asked by waterrocketexpert 4 years ago
Is it possibe for a device to be 100% effecient???
Asked by west49rules 9 years ago
I want to make a mini hydrogen engine but dont have a big budget. i may also add an electric genorator to put on it for clean & green energy. please help.
Asked by tzq33tdq 6 years ago
1.climate change (2)green energy (3)conservation of energy.. (4)disaster management... (5)health (6)food security
Asked by pikichops 6 years ago
I finally finnished my testing prototype of my metal melting furnace. Did a few casts to get short rods for the lathe work and noticed a big problem. I used washed play sand as itwas the finest sand I could find locally. The result was good in shape but very bad in terms of surface quality. For another test I used the leftovers of my crushed perlite and mixed it bentonite and the surface was really smooth - but using perlite is not really an option. Real green sand is hard to get in my area and the postage costs for a 20kg bag are just too high on top of it. So, before I start hunting down all sand and soils shops nearby: Is there a proper name for extreme fine sand or a good alternative for a reusable casting media?
Asked by Downunder35m 3 years ago
Asked by iovsjupiter 8 years ago
Asked by mlcorbello 9 years ago
Asked by pvbvishnu1995 7 years ago
I just wanted to know who you guys thought would win
Asked by pockettown 8 years ago
I threw some hay off my lawn and some green weecds into a garbage can, some sugar and yeast and formented it to slug beer but the slugs did not like it. It then fermented further to vinegar, and a crust of green "Mold?" covered it. seems to have protected the vinegar from further fermentation. I tried a second bigger batch ( morning glory weeds) with less sugar but after a few days of good fermenting it went rotten and stinky. So there are probably thresholds for sugar content. Would the yeast be a way of adding fertilizer to organic gardens? Yeast can (I think) convert urea and nitrate to protein. Perhaps some green stuff has enough sugar to work without sugar addition. vine prunings? maybe. The first batch, i put bleach in to kill off microbes before I added water and yeast. Perhaps hydrated lime would work instead of bleach and also get the ph good for yeast fermentation. This might be a cheap way of liming your garden. (Here in victoria, hydrated type s lime is cheaper than limestone for garden addition. (But it contains more calcium!) The "yeast tea" or vinegar tea could be used on the garden and the weeds could then be transfered to normal compost or used as mulch. It might be an alternative way of using diseased materials of composting seedy weeds to kill the seeds. Brian
Posted by gaiatechnician 8 years ago
63% of Americans are struggling with obesity (http://www.americansportsdata.com/obesitystats.asp). There is also a large green movement going on. So what if we combine these two ideas? I have been looking at instructables on how to build your own wind turbine, and instructables on how to use your bike as a generator for charging ipods and cellphones... why not combine the two ideas and create a stationary bike that puts electricity back into the power grid, much the way a home turbine does? Granted... it wouldn't be much power, but the more you exercise, the more money you save--and the better shape you get in. And those pennies each month add up to dollars each year... and again... the health benefits. It's almost like getting paid to exercise, which can be a big motivating factor. Thoughts?
Posted by EdsTwin13 10 years ago
How would the shell hold up to aerodynamic and general usage pressures? What kind of cost figures would there be? Are there any government grants available to address this idea? I figure once painted and sealed there wouldn't be any problems with weather. I can only imagine that the overall result is a lighter car, improving gas mileage. Additionally, any modifications to the shell would be a lot easier.
Asked by javajunkie1976 9 years ago
Parabolic dishes are favoured because they are "perfect". Unfortunately they are only perfect if they are kept constantly pointed at the sun. In practice this is very hard to do. A better shape would maintain good reflection of the sunlight for a long time without moving the dish.I think I have found useful easy software to help with this design work. It is called art of illusion and you can see my first results and a downloadable scene file to help you get started on step 12 of this instructable https://www.instructables.com/id/Make_a_quotcompoundquot_parabolic_solar_cooker/Brian White
Posted by gaiatechnician 9 years ago
Background: I was looking at Costco and they have their big semi-rugged totes on sale this time of year for like $6! The thing I'm pondering is sticking one in inside another and filling the space between with insulation. But what to put in between? You're probably thinking what I'm thinking, Pinky: Spray it full of Great Stuff foam. But then I'm looking at my fridge going... that thing is literally freezing inside and not even cool to the touch on the outside! What kind of insulation do they use? I'm guessing something trickier than Great Stuff, what with Energy Star ratings and all. In short: What is it and where can I get some!??
Posted by PS118 6 months ago
I work in an aluminum casting facility and we're looking for ways to save energy etc... one thing that we've got no shortage of is heat (during the summer the temp near the ceiling above the furnaces is over 230F) i've looked into stuff like they do in steel mills in Germany where they run pipes through the furnace linings and then use the heat from the furnace to make steam and run steam generators. but i was thinking of something else today. would you be able to just mount a bunch (or one huge) peltier exchanger (or whatever they're called) on the ceiling above the furnaces and use that to make electricity? i'm aware that they create electricity because of temperature differences (and not specifically from being hot or cold in general) so would we have to cool one side of the unit for maximum efficiency? are there any other ways that anyone knows of to turn waste heat directly or indirectly into electricity?
Posted by crapflinger 7 years ago
So I had an idea that you could make solar cells that looked like Terracotta roofing tiles example. I figured if they were durable enough you could cover an entire roof in them. They're definitely no uglier than standard shingles. Also figured since they're curved you might get more performance out of them, but I could be completely wrong and they could be absolutely useless up there.The only solar cell I've ever seen that didn't look like a giant rectangle was this little, thin sheet that was in the back of a Wired magazine. It could eliminate the eyesore issue that you might run into with the neighbors. I guess the second problem that you'd run into would be how costly this would be. Since you would have to buy them, install them, then wire them through the attic.And for the record, I know absolutely nothing about solar panels, I was just brainstorming ideas....Ideas? Suggestions? Possible? Impossible?
Posted by casshan 9 years ago
Mechanical Heliostats were important scientific instruments over a hundred years ago and one mirror heliostats were often used to focus sunlight on an experiment. Better mirrors became cheap and 2 mirror heliostats replaced them. Then electric light killed off both types.But now, solar energy is becoming important again. Big fairly low efficiency mirrors can be made with mylar stretched across a frame. Perhaps now is the time to get 1 mirror heliostat research going again! (With low efficiency mirrors, 70% efficiency becomes 49% if you use 2 mirrors to reflect the light) So you get less efficiency for twice the expense if you use 2 mirror heliostats!But first we need to model the process. It just takes too long to test your ideas outside! Here is the start of my model of mirrors on an equatorial mount (also called a polar mount) and the sun moving on the celestial sphere. I think that it will end up being very useful. I just gotta find the right mirrors and the right laser pointer. A heliostat with the mirrors moving at one rotation every 2 days, can do this perfect reflection but it is limited to certain angles because the mirror must be upright on the mount.In my model, I have left out the earth's surface for them moment. So we will just model the suns movement, the heliostat mirror movement and have a target to see how much the reflection moves too.Brianhttps://www.instructables.com/id/S1QAZI9FS8O1X6Z/
Posted by gaiatechnician 9 years ago
I have an instructable about designing better reflectors for solar cookers. (Better than parabolic dishes). Basically you can design your own dish, and compare it to the parabolic dish and other shapes with the software. On step 1 there is a zipped folder for download. It contains an art of illusion scenefile. Art of illusion is the modeling and animation software I used. It is easier to learn than its competitors and it is free. The folder also contains a html file for almost automatic tabulating of your results and comparison with other reflector shapes. I have "starter" jpg images for when you create series of 10 images for comparison. I hope to put in a help html file too but thats all for now. To test it, you do need to download art of illusion too. I know this type of project can be a bit of a pain but with feedback, I can refine it. And where else do you have free tools to test solar reflectors? https://www.instructables.com/id/Use_software_to_design_a_better_solar_cooker/I hope that this will grow. A guy in Finland has already done a rudimentary "sun engine" that will do the shadows from a day as an extension to this project! That could be used to design passive solar houses and to site vegetable and fruit gardens in the best spots. (Depending on the seasons and day length, shadow patterns from trees and houses are very different). This is not something you can imagine just from surveying a site! Anyway, hopefully I will get some input.The instructable has grown and changed a lot as I have improved the scenefile. There are certainly parts that need trimming now. Hopefully I get round to it in the next couple of days. Brian
Posted by gaiatechnician 9 years ago
IS there a way to do a green screen effect without a green screen on obs
Asked by fbievan3. 1 year ago
Like the weather-guy uses, the backround of the set is green so that they can use a computer to show images on the screen. Does the backround have to be green? Why green? It does not seem like a special color, i would think maybe white, red or blue?
Asked by MechEngineerMike 8 years ago
"We're going to look at some of the best Do It Yourself green projects" ABC just ran a piece interviewing Julie Gerstein from The Daily Green about their Heart of Green Awards. The interview spotlighted the Trash-to-Craft Challenge in which The Daily Green teamed up with Etsy to show off green projects that highlight the resuse and repurposing aspect of the materials. And as luck would have it, all of the projects shown in the interview can be found on instructables! You can go check out the piece on ABC News, and check out the instructables here! In order of their appearance: #1 - Bike Chain Bracelet #2 - Tin Can Reading Lamp #3 - Succulent Plant Quilt #4 - Cardboard Chaise Lounge #5 - Vertical Vegetable Garden #6 - DIY Sock Creations #7 - Berry Picker
Posted by StumpChunkman 8 years ago
One last reminder to y'all that the Go Green contest ends on Sunday night! Upload the photos, type in your eco-tips ,and publish something useful for everyone else. If you don't have a green thing to work on, there's also the Science Fair Contest that ends in a couple weeks. Show us something cool! OK, that's it. Have a great weekend, everyone.
Posted by fungus amungus 10 years ago