is it posible to run a lawn mower off of evaporation?
ok so i'm thinking of making a lawn mower to run off of electricity made by a water wheel type thing spinning by the push of the evaporation with the evaporation made by a kettle or something ....only got 2 questions..... would the push of the wheel create enough power to push the blades around i'm taking about if i use the lightest metal........and how big of battery/how many volts, would i need to run the boiler for a half and hour to an hour? thanks
I think this is going to be much more difficult than you think. First of all it will be very inefficient. The more times you convert energy into different forms the more energy you lose. For instance if your home is powered by a coal power plant then by the time that energy gets to your lawn mower it will have changed forms 4 times (actually the energy changes forms more times than this but for the sake of simplicity): Chemical Energy(coal) -> Electrical Energy (battery)-> Thermal Energy (boiler/steam) -> Mechanical Energy (lawn mower blade). Secondly to make the blade spin with a kettle and water wheel you would need extremely high pressure steam which you would not be able to get from a commercial kettle also high pressure steam is very very dangerous especially if you are going to cart it around on a jostling lawn mower. Also, using light weight metal for lawn mower blades is not ideal, the heavy weight of the blades helps keep the revolutions up when going through thick brush also if you hit a rock or anything hard you can kiss those blades good bye. The batteries necessary would depend on the wattage of the boiler you are using but I would guess that you would need a boiler capable of handling 1000 watts at the very minimum however you would probably need much much more. Can I suggest using an electric motor instead of the water wheel and boiler?
