When heat is introduced to a thermal fluid the molecules that make up the fluid exhibit an increase in their kinetic energy, the spaces between the molecules increase and the overall volume of the fluid increases.
It is critical when designing any system using heat transfer fluids to account for this increase through proper sizing of expansion tanks and reservoirs. Our thermal expansion calculator requires only density data and temperature differentials (expressed in either degrees Celsius or Kelvin) to calculate coefficient of thermal expansion.
Thermal Expansion
Coefficient of Thermal Expansion
(%/°C)
Learning Center

What’s the Difference Between a Flush and a System Cleaner?
We’re often asked for a flushing fluid when what’s really ... Read more

Proper Fluid Maintenance and Change-Out Procedures
With literally thousands of uses for heat transfer fluids, it ... Read more

System Cleaners: Which One is Right for You?
Ideally you never need to clean your heat transfer system ... Read more
Leaky System? Simple Steps Help Seal the Deal
If you've invested in a quality heat transfer fluid the
System Cleaners: Which One is Right for You?
Ideally you never need to clean your heat transfer system
What’s the Difference Between a Flush and a System Cleaner?
We’re often asked for a flushing fluid when what’s really