In order to contribute to a better understanding of the electrostatic phenomena appearing during splash filling of liquids and to clarify the reasons why this process is suspected to increase static electrification especially due to atomization, accurate experiments of charge measurements were made on droplets of various liquids falling over a large distance (5 m). Eleven liquids of different conductivity and surface tension were tested. The results confirm that no charge evolution appears even over a long falling distance. A possible explanation of the static charge increase in splash filling is presented.
When filling a tank with liquid via a tube, the tube may either reach nearly to the bottom of the tank or end at a certain distance above the bottom, allowing the liquid to splash into the tank from a certain height. Up to now, the electrostatics experts do not know exactly whether splash filling may create an electrostatic hazard or not. For this reason, the research project Splash Filling was started. The first part of this project has already been published in this journal. This work is the second part of this project and answers the question whether electrostatic discharges do occur during splash filling of several liters and which safety precautions may be necessary.
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