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Isel has developed significant expertise in industrial heat transfer fluid applications. We are here to equip you and your staff with valuable product information, training, technical properties and key product benefits.

For technical data sheets and detailed application information, please see our product pages.

Have Questions? Our expert staff will work with you to understand the unique real-world environments your systems go into and recommend the ideal fluid for those unique situations. Contact us.

News

How to Start Up and Shut Down a Heat Transfer System

Many facility operators often overlook the startup and shutdown of their heat transfer system and its effect on the heat transfer fluids. The proper operation of a heat transfer system is critical for fluid longevity, overall heat transfer efficiency, and maintenance cost reduction. In this article, we present several good practices applicable to the startup and shutdown...

How To Clean A Heat Transfer System - Part I

Even under the best conditions, a heat transfer fluid will eventually degrade. Commonly this happens over time due to a process known as oxidation — the chemical reaction that takes place between a fluid and oxygen. It’s an inevitability that ultimately brings the fluid’s useful life to an end. But it also happens due to contaminants, overheating and numerous other...

How To Clean A Heat Transfer System - Part II

(Part I) Even under the best conditions, a heat transfer fluid will eventually degrade. Commonly this happens over time due to a process known as oxidation — the chemical reaction that takes place between a fluid and oxygen. It’s an inevitability that ultimately brings the fluid’s useful life to an end. But it also happens due to contaminants, overheating and numerous...

Common Heat Transfer Fluid Problems: Oxidative Degradation

Problem: Oxidative Degradation Oxidative degradation occurs when oxygen reacts with a heat transfer fluid. This is a reaction that eventually leads to the formation of weak acids and sludge. As a result, the viscosity of the fluid increases. Because of the consequent decrease in turbulence and the coating of system components by varnish, the fluid’s thermal efficiency...

Common Heat Transfer Fluid Problems: Thermal Cracking

Problem: Thermal Cracking Thermal Cracking or degradation occurs when a fluid is heated above the maximum bulk temperature causing the covalent Carbon-Carbon bond to disintegrate into electrovalent bonds. This leads to the formation of molecules with lower molecular weights than the original molecule. Thermal cracking causes a reduction in viscosity, flash point, fire...

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