trishelen Posted June 24, 2008 Report Share Posted June 24, 2008 i am participating in a competition <portable cooking>. i need to built up a model without using any battry or generator in order to rise the temperature of water which is placed under the sun. therefore, i need some ideas to built the model so that the temperature of the water will experience a great rise in a short period... Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted June 25, 2008 Report Share Posted June 25, 2008 Can you use chemicals? Or is it PURELY just solar-powered? Quote Link to comment Share on other sites More sharing options...
freeztar Posted June 25, 2008 Report Share Posted June 25, 2008 i am participating in a competition <portable cooking>. i need to built up a model without using any battry or generator in order to rise the temperature of water which is placed under the sun. therefore, i need some ideas to built the model so that the temperature of the water will experience a great rise in a short period... I recommend the following thread:http://hypography.com/forums/science-projects-homework/6465-solar-parabolic-trough-charcoal-oven.html?highlight=hyperbolic Let us know if you have any questions. :shrug: Quote Link to comment Share on other sites More sharing options...
trishelen Posted June 25, 2008 Author Report Share Posted June 25, 2008 nope. v r not allowed to use chemical... Quote Link to comment Share on other sites More sharing options...
modest Posted June 27, 2008 Report Share Posted June 27, 2008 ...without using any battry or generator in order to rise the temperature of water... nope. v r not allowed to use chemical... How about a fire. I find nothing heats something up quite like a fire :hihi: ~modest Quote Link to comment Share on other sites More sharing options...
freeztar Posted June 27, 2008 Report Share Posted June 27, 2008 trishelen mentions that it must be "under the sun", which I interpret to mean "solar powered". If that is what trishelen means, then I think that solar concentration is the way to go. Hence, I referenced a *very* detailed thread regarding this, in post #3. It is possible, with solar concentration, that one could start a fire and also heat the water directly from above. This would raise the temperature *very* fast! Quote Link to comment Share on other sites More sharing options...
modest Posted June 27, 2008 Report Share Posted June 27, 2008 trishlene mentions that it must be "under the sun", which I interpret to mean "solar powered". If that is what trishlene means, then I think that solar concentration is the way to go. Hence, I referenced a *very* detailed thread regarding this, in post #3. You're no doubt right and I agree. Either a mirror or lens would be the way to go - whichever is readily available. I also would agree the charcoal via solar parabolic thread (which I found fascinating) would be a good resource. Good luck trishelen ~modest Quote Link to comment Share on other sites More sharing options...
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