Re: Help needed for an environment project from engineers or people with experience

[gordo]

do you have a budget. this sounds like an expensive undertacking for a school project. just the proper transformer is 500, you shouldnt need a charge controler if this is just a short term situation (if you choose to have one to show a complete system) you could probibly get by with a small morningstar charge control for about 70. ideal for inverters is a pure sinewave. but not necessary for this project. your inveter should be a minimum of 4000watt. when you intially flip the switch the transformer will draw alot of power for the capasitor. then if your water cooler has a capasitor another significant load. before the cooler actually gets power. the size of the solar pannel isn’t important. it will depend on the amount of time you have to charge your battery bank. how long would you like to run the water cooler??????. this experiment could cost thousands of dollars. maybe look into sterling engine, endothermic reactions(make ice cream) make a wind generator from a ceiling fan. think cheep..

any particular reason for picking 220 volt. for a school project i would stick with 12v.

cheers gordo