| MadSci Network: Engineering |
The LPG container is under pressure to keep the contents in a liquid state. This pressurized liquid is colder than the ambient air temperature and will cool the layer of air in direct contact with the container through both conduction and radiation. When the air closest to the tank cools below its dewpoint, condensation occurs and the tank sweats. Check out these pages from USATODAY to learn more about dewpoint temperatures and condensation.
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