Triethylene Glycol, also known as TEG, is a preferable industrial chemical for various applications which require efficient heat-transferring fluids. High-temperature applications such as geothermal plants, petrochemical reactors, hot fluid transferring pipelines, and solar systems can be named as some examples which can use TEG. TEG thermal stability is higher than many other similar glycols such as Monoethylene Glycol (MEG) or Propylene Glycol. Moreover, some scientific researchers have reported that TEG can be used up to 390 Fahrenheit degrees. In addition to the unique heat-transferring, TEG provides perfect anti-freezing properties. TEG is an ideal choice for cooling and heating transferring processes.


There are different types of heating transfer fluids, such as water, water-based fluids, natural oils, and synthetic oil-based fluids. Based on provided properties of the mentioned fluids, they are used in different industrial processes. Although, some characteristics creates some of these fluids to be superior when compared to others, such as safety in handling, low corrosivity properties, high boiling temperature, and being less hazardous to the environment.

Triethylene glycol (TEG) as Heat Transfer Fluids