Hi,I was just wondering what best insulator for keeping hot water from losing temperature? I'm doing a project in science, and we have to put hot water in a can and insulate it with a materialWhoevers insulator keeps the water from losing the most temperature winsThe weight of the can after we add the insulation also mattersSo if one insulator is more efficient at keeping temperature, but weighs more than another, the one that weighs less would be best to go withthank you :)
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First consider the 5 types of heat loss your water can undergo for your design1Conduction - Heat flowing through contactYour biggest concernCreate a dead air space around your canMaybe with a foam like great stuffLook at the R value of insulatorsThe higher the R value the better the insulator2Convection - Cold air blowing across your can of water and circular water currents in your can waterMaybe try wrapping your insulator in some plastic wrap? 3Radiation - Infrared radiation emitted from your hot waterUse a shinny metal to reflect the infrared radiation back toward the watersome aluminum foil would be the cheapest method 4Evaporation - If their is no top this will be a major form of coolingmake sure you have a cap5Mass Transfer - Not really applicable for your design Basically you will want to create a lot of dead air space around your can with some layers of shiny metal foil to reflect IR radiationThen wrap all of this with plastic wrap to prevent convection cooling.
