I have developed an alternative air conditioning system that works even in the hot summers of Gilroy. I hope to get the attention of PG&E who should love the idea as well as other local inventors.
To summarize how it works, I use 360 concrete blocks to store the coolness of the night air and then blow it into the house in the day time when it gets hot. I’m time shifting the coolness of the night into the daytime.
Additionally I have drip lines in the concrete blocks so I’m using wet concrete. That increases the thermal mass and it provides evaporative cooling which greatly increases the cooling power of the system. The hotter it gets the better it evaporates water. Think of it as a personal cave.
Gilroy California is a small town about 25 miles south of San Jose California. Gilroy is somewhat known for the hot summer days setting records for the area. But at night the temperature usually drops in the range of 55-60 at night. This isn’t something that would work in Georgia, but west of the Rock Mountains it’s ideal.
The system was very inexpensive to build. It uses simple controls – no computers – and it works pretty well. Runs off a standard thermostat, a hose timer, and another timer to run it at night to coll it off from 12 midnight to 6:00 am. Had to use a couple relays to activate the fans and 2 damper valves. it uses about 12 gallons of water a day.
Because it uses just fans and water the electrical draw is far lower than an air conditioner. It also saves power at the hottest part of the day when PG&E really needs people to save power. This system works up to about 105 degrees. If I had used bigger ducting and 500 concrete blocks it would work all the way up to 110 degrees. that’s how hot it got here this summer in Gilroy. It is not August and only hard to use the air conditioner for 3 days this year for 1/2 hour a day.
If this system were incorporated in new construction it would save enough power so that PG&E could build less power plants to take care of peak capacity. Hoping that PG&E is interested in green alternative energy systems that save a lot of electricity.
More Pics: http://ctyme.com/pics/aircond/