Science Fair Projects

Effect of Electric Fields on the Heat of Vaporization of Water


The objective: The objective of this project is to study the effects of an external electric field on the heat of vaporization of water through both computer simulations and experiments.


Using the molecular model of the dipolar water molecules, a program was written in Java to simulate the effect of a static electric field on the transitional and rotational movements of water molecules as well as the interactions among water molecules. The average transitional velocity, rotational velocity and kinetic energy of water molecules after each step of the simulation were plotted against time. The program was run at different strengths of electric fields from 0V/m to 1400V/m. The heat of vaporization of water was measured using Clausius-Clapeyron equation experimentally under electric field strength from 0V/m to 1400V/m.


The heat of vaporization of water increased by about 5% as the result of a static electric field. Based on the consistent results from both the simulation and the experiment, the increase of the heat of vaporization underwent exponential decay as the strength of the electric field increased.


Due to the overall neutral charge of water molecules, a static electric field had no effect on the transitional movements and the transitional kinetic energies of water molecules. However, the torques created by a static electric field on water molecules tended to reorient water molecules towards the direction of the E field. The rotational movements of water molecules underwent damping oscillation in which the average rotational kinetic energy decreased. Water molecules with lower KE then needed more energy to be freed from their liquid state, thus resulting in the increase of the heat of vaporization of water in an external static electric field.

Study of the effect of external electric fields on the heat of vaporization of water

Science Fair Project done By Peiran Gao



Related Projects : Effect of Skyglow on the Visibility of Stars, The Most Efficient Automobile Sunshade, Measurement of True Noon Time Using the Sundial Principle, Saltwater and Sound, Using Solutions' Absorbance Spectra to Predict Their Heating by Light, Safely Thawing Meat Used while Backpacking, How Low Can It Go, Comparison of Thermal Conductivity for Different Metals, Observations of Gas in the Infrared Spectrum, Liquid Light, Liquid Viscosity and Temperature, Study of the Wavelike Properties of Light, Ruben's Tube, The Whispering Gallery Effect, Catch a Wave: Choosing the Right Soundboard, Comparison of the Adhesion of Liquids on Regular Shapes, Stellar Parallax, The Greenhouse Effect, The Study of Alternating Magnetic Fields, Solar Tubes vs. Conventional Fluorescent, Measuring the Speed of Light

<<Back To Topics Page........................................................................................>> Next Topic



Copyright © 2013 through 2015