Considering Vapor Pressure...

If you're designing a closed-loop cooling system, be sure to consider the Vapor Pressure of the coolant fluid and how that pressure will change with temperature. As your application temperatures rise, so will the pressure inside your system, perhaps to the point where there's an system overpressure, a catastrophic failure, a blowout or a big huge mess, however you want to call it. Take into account both thermal expansion as well as vapor pressure when designing and choosing fluid enclosures and hose systems.


Even with open, or "free breathing" systems, high vapor pressure can cause unwanted evaporation and condensation of coolant fluid. In aerospace applications, the Vapor Pressure of any functional fluid is critical.


The Vapor Pressure of a coolant fluid is a a characteristic of its molecular structure and source. Mineral base oils or GTL "Synthetic Mineral Oil" have higher Vapor Pressure, and Overpressure Safety Devices may be recommended on closed systems. Fluorinated 2-phase fluids have high vapor pressure by design. On the other hand, AmpCool Dielectric Coolants have been engineered to have extremely low Vapor Pressure at a wide range of temperatures.


Engineered Fluids performs extensive research to determine the complete characterization of AmpCool Dielectric Coolants, and makes this information available to design engineers. On our website, you can access our extensive Materials Compatibility Guide, too.


Our Technical Support is one reason we're the world's leading supplier of Single-phase Liquid Immersion (SLIC) technology. Contact your Sales Representative or email sales@engineeredfluids.com for more information!

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