Ken's DIY Solar Air Heating Collector -- Aluminum Soffit Absorber Search The Renewable Energy site for Do-It-Yourselfers Overview This is my homemade solar hot air collector. Features of this collector: No wood is used in the collector. Materials and Cost Material list and prices as of 10/10/10: 1-4x8 sheet of 6mm twin wall polycarbonate $40 (bought at Menards) 2-4x8 sheets of 1” polyisocyanurate insulation $27 (the yellow stuff with foil) 2-16’x12" full vent aluminum soffit or 4-half vent $30 3-5 ½ inch stud track 10’long $? For a total of around $200. How it Works Building the Collector The collector is a sandwich of the glazing, a foam spacer that holds the soffit, and the back insulation held to gather with the stud track. The picture above is a cutaway of the collector sandwich: - The glazing (front of the collector) on the left (has the white cover plastic on it) - The foam spacer with the soffit (inserted ½ “into it) in the center - The insulation panel on the right - The stud track holding it all together Bending the top down Questions?
DIY Solar Water Heater | DIY This simple solar water heater provides both domestic hot water and space heating. You can adjust the size and design to meet the needs of your home. You’ll find nearly all the materials at your local hardware or lumber store, and to build it, you need only basic carpentry skills and a little plumbing know-how. Amazingly, the cost of this DIY system is only about one-eighth of what you would pay for an equivalent commercial system! How It Works The system takes water from near the bottom of a solar heat storage tank and pumps it through a collector — where it’s heated by the sun — and then back to the tank. Water is preheated in a single pass through a large coil of PEX pipe immersed in the solar storage tank. The floor heating system pumps water from near the top of the tank through the radiant floor loops, and then back to the bottom of the tank. A key feature of this design is that the storage tank is non-pressurized. Building the Collector
Fog Harvesting Projects Hit The Big Time Everything old is new again. Even water. Fog harvesting, a technique used by nature and ancient civilizations to wring water out of the air, is getting a second look as modern technology tackles an age-old problem. The technology works by creating surfaces where tiny airborne water droplets condense on a surface. For humans, the answer is mesh (we covered how MIT is borrowing the beetles’ technology for its own design). Now, the research is getting more serious, with organizations such as the nonprofit FogQuest dedicated to fog and rain harvesting in rural areas. But the technology is still in the experimental stage. The coming decades should see plenty of researchers exploring ways fog harvesting can free communities from the vagaries of drought.
How to Build a Solar Heating Panel with Soda Cans If you’ve got good sun exposure on one side of your house, you can take advantage of free heat from the sun with this DIY solar heating panel, which uses old soda cans to collect and transfer the sun’s energy into your house. Sometimes, low-tech solar devices are much better than high-tech ones for home use, as they not only tend to be cheaper to make, but will also last much longer before any repairs or maintenance are necessary. And even better, they can be built in part from repurposed or recycled components, which is something you don’t see very often in new solar devices. This solar space heater design uses old soda cans to increase the surface area for heat transfer inside of it, and in its most basic design, uses no external power to move the air. Double-glazed glass or polycarbonate panels make up the front of the device, allowing the sun’s rays to enter it while restricting heat loss to the outside air, and the box is also insulated for more efficiency. Source: Blackle Mag Related:
Brian's Pop Can Solar Heater Quick Links 11/15/10: 1. Solar Hot Water Heating Test Project: 2. 1. I spent about $33 on it ($5 OSB, $9 RMAX Insulation, $5 Silicon, $6 on 2x6s, $4 on spray paint, another $4 on more caulk, fan controller was built with spare parts, cans, windows and salvaged fans free)The entire project (except collecting the cans) took about 12 hours. 6 Hours to build 12 tubes 1 Hour to construct box 1.5 Hours to build and install manifolds 0.5 Hours to paint cans 1 Hours to install and wire fans and put in fan controller 1 Hour to build fan controller 1 Hour to install windows and seal plenums and caulkSize: 8ft x 35 inches x 6 inches deep Glazing Area: 2.75ft x 7.25ft = 19.9 sq ft Here are some pictures of the collector being constructed. Here are the free storm windows (thanks Paul) and the insulationfor the collector. Here are some of the cans getting rinsed before assembly into collector tubes Here's whats done so far. Google Spreadsheet Brian Smith
Gernot Minke- Building With Earth : Gernot Minke Author: Gernot Minke Keywords: Germany; Earth Building; Soil Testing; Green Technology; Stabilised Earth; groundwater effects; Testing Earth; Building; Seismic; Seismic Design, Architecture; Earth Architecture; Pise; Super Adobe; Loam; Terrestrial; Sustainable Architecture; Green Buildings; Soil Testing; Construction Handbooks; Golbal Warming; Climate Crisis; Housing; Affordable Housing; Owner Builder; Year: 2006 Language: English Book contributor: Gernot MinkeCollection: opensourceNotes: One of the most complete and up to date (2010) handbooks around this subject available. This volume is loosely based on the German publication Das neue Lehmbau-Handbuch (Publisher: Ökobuch Verlag, Staufen), first published in 1994 and now in its sixth edition. Of this publication a Spanish and a Russian edition have also appeared. Description Gernot Minke Building with Earth Design and Technology of a Sustainable Architecture Written in response to an increasing world- sibilities of optimising them.
f.a.q. The information below is drawn from both more than 20 years experience and from published papers and reports. More information is available in the FogQuest Fog Collection Manual (2005), which can be purchased from FogQuest. Detailed scientific and technical information is available, in the form of many published papers, to our members in the Members’ Section of this web site. What is fog? Fog is the same as a cloud except that it touches the ground, whereas a cloud has a base that is above the ground. How much water is in fog? There is typically from 0.05 to 0.5 grams of liquid water in a cubic meter of fog. Does fog collection work in humid air? Our fog collection technology has many applications and can provide clean water in parts of the world where conventional sources are unavailable. Does it have to rain in order to collect fog? It is not necessary that there be rain in order to collect fog, though the fog collectors are also efficient rainfall collectors. Is the fog water clean?
How To Build DIY Solar Panels Out of Pop-Cans At the end, the solar absorber is painted black and placed in the diy solar panels casing. The casing is covered with plexiglass that we attach to the frame and thoroughly corked with silicone. Polycarbonate / plexiglass is slightly convex in order to gain greater strength. You can see installed solar absorber without plexiglass in picture 18. On YouTube you can see how our diy pop-can solar panels work. Important note: Our solar system is not able to accumulate thermal energy after producing it. Differential thermostat (snap disc) controls the fan. If on/off temperatures are set carefully, diy solar panels are able to produce an average 2 kW of energy for home heating. Dress rehearsal of solar collectors carried out in the backyard before installing the system on the house. After completing installation of collector, the outside temperature was -3 ° C, and from the solar collector is coming out 3 m3/min (3 cubic meters per minute) of heated air.