Energy. This is what drives us. This is what makes life in the modern world possible.
Ironically, doing something for yourself again is the best way. Just ask the Amish about living off the grid. Or start using smart home devices to save money and energy Let’s see how we can implement some simple alternative energy projects. and save a lot of money.
Before we start, I am not an engineer. The values are calculated as best as possible by this layman and the data comes from external sources.
Solar Air Heating — Save $20,440
Two principles at work: dark surfaces absorb light and the main thermosyphon. Dark things look dark because they don’t reflect as much light. As you know, light is energy, but when it is absorbed by something, that light energy is converted into heat energy.
The main body of the box will have a black material to trap the heat from the sun. This heat is transferred to the air in the box.
As the air warms up, it wants to rise out of the box. As warm air rises, it pulls colder air into the box. This is a thermosyphon that works with the help of convection. Now our solar air heater is working. It happens without moving parts!
The most efficient and effective design uses a black metal window screen as a heat collector. This works great because it has a large surface area and is already rated for maximum airflow. If you can get a black metal screen, this is the best. If you can’t, it’s easy to spray paint on a black screen. Just use a heat resistant paint such as barbecue or wood stove paint.
How much will a solar air heater save? Gary Reis posted his results on BuildItSolar.com. He did his test a day, which averaged 60 degrees. F or 15 deg. C. Cool day by most people’s standards. The heater he used was 32 square feet. Sounds pretty loud, but it’s just a box 8 feet high, 4 feet wide, and 6 inches deep. You can of course make them smaller.
The test took place from 10 a.m. to 2 p.m. — the peak sunny hours of the day in winter. The heater sucked in air, which averaged 60 degrees. F and pumped it out at an average of 109 degrees F. Wow.
He did this at a rate of 87 cubic feet of air per minute (cu ft). The average living room is about 2560 cubic feet. This window-mounted solar air heater will circulate all the air in that room for 30 minutes. This means that if your room is at 60 degrees Fahrenheit at 10 a.m., it can be warmed up to a comfortable level in half an hour. Electricity is not required. This is the ideal application of alternative energy.