Welcome to Tuesday's Tech Tip. Each week Harris will bring you a tip straight from our technical service hotline. This week's tip comes from Harris helping a food processing company that needed to control large volumes of CO2 gas in a process they were developing.
Carbon Dioxide (CO2) gas can, under certain conditions of temperature and pressure, freeze-up and form a solid (dry ice). If this condition occurs the required CO2 gas flow can be restricted or blocked entirely.
When working with CO2, gas pressure and temperature are the most critical elements to control or prevent the fomation of dry ice. Freeze up can be eliminated or minimized by either adding heat from an external source (i.e. electrically heated or fin style regulators) or operating the gas systems at pressures at or above 80 psig.
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