This is essentially a story proving the old adage of necessity is the mother of invention. You see, in New Zealand young men have two major past times; playing rugby or cozying up in their sheds. Inevitably when one is not good for the former, he has to turn to beer to make time in latter tolerable. A quest to keep beer cool while working in his shed led a dude to create a self-made Jet-Powered Beer Cooler. Ideal has law is at play here, which basically states that when the volume of a gas decreases at a maintained pressure, the temperature of the remaining gas falls. For some physics knowledge you could click on the above link, or read on for what has been a remarkable invention, although a bit old now. The author decided to use an LPG cylinder to cool his beer and for that he created his very own Jet Engine. (By the way for that he borrowed a couple of parts from a car engine.) After doing that hard bit, the inventive kiwi just placed the tank in water and placed some (read four) beer cans alongside. A five-minute run of the engine, with a host of noise and heat of course, and voila, the beer is successfully chilled to a nice cool 2 C. What the? So, that much trouble for a drop of nine degrees, well that’s just great! By the way you can visit the official site and browse for instructions to build one of these coolers. But I can see two reasons for not doing so. For one, this is dangerous (and that’s the creator’s frank confession) and two, the thing was created way back in 2001, seven years on, the LPG don’t come that cheap!
