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임채혁(Chaehyuk Im),강현웅(Hyunwoong Kang),송시몬(Simon Song) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Vapor pressure is defined as the saturated pressure when the vapor is in thermodynamic equilibrium with solid or liquid. The significance of vapor pressure can be found in various experiments. One of the most effective ways to learn vapor pressure is performing experiments. Thus, the purpose of our studies is to design and fabricate a vapor pressure measuring device that can be used in undergraduate experiment classes. We chose the triple expansion method which is not only more precise but automatable than other methods. After analyzing the data obtained by using LabVIEW, we found that the device resulted in less than 4% error in vapor pressure measurements of methanol and ethanol as compared to its theoretical value.