This video shows the build of a redneck style off grid wood burning heat exchange we use to heat our house in the winter. It will keep your home warm without electricity, or using the furnace. The air comes in through the front, where there is a lot of spaces along the bottom of the barrel, then gets heated and rises through the duct in to the house.Here,the air from the house does not go into the exchanger, it only pushes warm air into the house.
- How to build a Simple and Efficient Homemade Garage Fan out of Old Furnace BlowersThis video shows the build of a Homemade Garage fan made out of Old Furnace blowers that is easy to make and really efficient.Once you try one of these you'll never use a box fan again. These fans are designed to run with constant restriction. So you need to recreate this when used out in the open by blocking roughly 25% of the air intake or output. If you don't restrict the airflow the motor will pull significantly higher amps than it is rated for and will overheat/burn out. If you want to be scientific you can look at the side of the motor and read the rated amps. Then with a load meter hooked up, run it and block off the air flow until the amp draw drops to or close to the rated amps.Centrifugal fans are amazing at moving a large quantity of air and the output can be ducted unlike axial.
- How to build a Simple Homemade AC Air Cooler using an Old Juice CartonThis video shows the build of a Simple Homemade Air Cooler using a Used Tropicana half gallon Juice carton.This desktop sized unit works very well and couldn't be simpler to makeThis is made using made a "half gallon" (specifically 59oz./1.75L) juice carton, 80mm DC fan (blue-lit), 1.5" PVC pipe coupler and a 3/8" square wooden dowel.It holds about 2 ice-cube trays worth of ice at a time (and it has a built-in drain! so as ice melts you can drain the ice-water into a glass for a cold drink). Thisonly took me 10 minutes to make it. cost about $8.50.This can be run using a 12v solar panel (2.4 watt or higher), a 12v battery or wall current (just use an ac to dc transformer that puts out 12vdc).
- DIY Video: Generate power from slow moving streams and rivers that have no speed or head by building a Hydrofoil Hydroelectric Generator