Velloen bike Posted April 2, 2014 Share Hi I've been recently require to think of a science expo idea. I have to keep to the fields of electricity. I need the hubers to help me think of ideas. Link to comment Share on other sites More sharing options...
obree Posted April 3, 2014 Share there are many areas where energy has been used for one purpose then discarded.For instance at the Pizza shop there is a fire to cook the Pizza and a whole lot of heat is going up the chimeny. if you install a copper pipe coil inside the chimeny = free heat for the geyser.Big manufacturing companies that have smoke stacks can be used to drive a wind type turbine to generate powerThe basic idea is to use the electricty for its main purpose, ie warming water, but then to use the excess heat or water for something else. Boil the potatoes then use that hot water in the dishwasher to do the initial rinse. Link to comment Share on other sites More sharing options...
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