background preloader

GREENPOWERSCIENCE - YouTube

GREENPOWERSCIENCE - YouTube
Related:  Off the Grid

Beehive Wrap Up Cocoon with Environmental Monitoring Some might say I am slightly obsessive about beehive insulation for the winter, but I am only guided by other beekeeper's experiences in my neighbourhood. Two years ago people were losing 2/3 of their bees due to the cold and they're still not insulating their hives. Now, I have come up with a third design that leaves them no excuses as it is incredibly cheap and quick to accomplish, easy to mass produce and re-usable year on year. This design will be especially relevant to bee keepers who experience harsh winters in Canada, Northern USA, Scandinavia, Russia, central Europe, Scotland etc. and have quite a few hives to manage. The design is based on the principle of wrapping with fibrous insulation but rather than wrapping directly on the hive, there is an intermediary frame which allows the whole structure to be removed with great ease and speed.

georgesworkshop books RIBS - External ribs form the parabolic shape to the reflector sheet. There are seven ribs required for a single eight foot reflector or three ribs for a four foot reflector. I recommend MDO wood (weatherproof sign board) and suggest sources of supply (start with your local signmaking shop). The top inside curve should be accurately made and stable to within a millimeter to get the best results. With a bit of care, they can be machined easily to good tolerance and finish with a router and a template that you make. CNC You can use a CNC router, laser or water jet to make the ribs and hangers. Or make by hand using templates Rough blank shapes are cut with a jig saw to a pencil line traced from a template and then closer still with a band saw. Vertical drilling is marked and center punched with the template. The plans show you in detail how to make high quality parts. With the methods described, it will take you about three and a half hours for each finished part with two coats of paint.

Open Source Ecology Weblog Whole Hog Butchering: Breaking down a Mangalitsa-Red Waddle Heritage Pig Much of meat’s flavor comes from fat. People are starting to embrace fattier cuts, and cooking with pork lard is making a comeback. With the welcome of full flavored, lard-laden pork, the fat, furry Mangalitsa heritage breed of pig, native to the Austro-Hungarian Empire, is gaining in popularity. Known as the “kobe beef” of the pork world, their meat is marbled and fat stores plentiful. It’s said that their fat is less saturated that normal pig fat, and so tastes lighter and cleaner. Jointing a pig is different from traditional butchering. Calculate the size of your Biomeiler | native power How much heat do you need? You may use one of the many calculators online, use a simple formula or work it out from your last gas bills. However, you have to be aware that these calculations are very general and can have large margins of error. There is one more aspect to keep in mind - over-sizing of boilers. One of many on-line Calculators for boiler sizing - Institute of Domestic Heating & Environmental Engineers (it seems the Energy Savings Trust removed their calculator)One of many online Calculators for radiator sizing (per room) - Plumb CenterThe Formula for boiler sizing in detail - Plumbing Pages From your Gas bill: Add up or check the summary on your gas bill for see how much gas you used in the last year in kWh. How much heat do you really need? What you really need is the heat you loose once the room has been brought up to its comfort level. Now, calculate your real energy need. What size of Biomeiler do you need? Example Calculation: Calculation 1: Calculation 2: Conclusion:

The Zeitgeist Movement Stay Connected with a Solar Powered Fridge Whether you're looking for a fridge because you're off the grid, or a fridge to have as a back-up during a power outage, or as a creative way to save money, a solar powered appliance makes a viable option. When shopping for a solar powered fridge be sure to confirm whether the appliance comes with the solar panels and battery. In most cases you have to purchase those separately. The manufacturer can usually provide advice on the compatible panels and battery for their product. Below you'll find a selection of solar powered fridges including the one featured in the photo to the left. Photo: Solar Fridge by EcoSolarCool - Size is 6.18 Cubic Feet Here you'll find the 8 Cubic Foot Fridge as well as a slightly smaller one, in case your able to make due with one that's even smaller! EcoSolarCool Freezer Measures 7.06 Cubic Feet - For residential or commercial use.

Solar Energy for All - GoSol.org

Related: