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Heat Transfer Fluid Deterioration Phenomenon
Source:Views:38Release time:2018-07-17
   

Every product has its own usage life and so does the heat transfer fluid. Heat transfer fluid will deteriorate after years of high temperature operation and other external factors, showing the increase of light components and carbon residue. When the fluid deterioration occurs, measures shall be taken in time. Otherwise, fluid flash point decreases gradually and viscosity increases, triggering energy consumption growing and system safety risks.


 

Light Components

Fluid thermal cracking occurs and generates light components in long-term of system high temperature operation. Light components decrease fluid flash point, causes system circulation pump cavitation and the over-temperature issue in system head tank, risking the system safety operation. 


Carbon Residues

The main reason of growing carbon residue is the fluid thermal polymerization. Different types fluids have the diversified thermal stabilities and applicable operation temperature ranges. Ignoring the applicable temperature range and over-heating operation will cause fluid carbon residue increases rapidly. 


Additional, system improper design and installation, incorrect operation and maintenance will also increase system carbon residues. Carbon residues adhere to the pipeline inner walls, adding the system thermal resistance and reducing thermal conductivity. Operator increases fluid temperature to achieve the process demanded temperature, which further over-heats the system and increases the carbon residues. Carbon residues also lift the fluid viscosity up and damage system seals, adversely affecting system normal operation.

 


Zhongneng Chemcial
Lianyungang, Jiangsu, China
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