10 Questions
What happens if the pH drops below 7 in the system?
The system likely requires a full internal cleaning and replacement of the glycol solution
What is the main difference between propylene and ethylene glycols in terms of pumping power?
Propylene glycol requires more pumping power due to lower viscosity
Why must propylene glycol be mixed at a higher concentration compared to ethylene glycol?
To provide more effective freeze protection than ethylene glycol
What is the impact of low glycol concentrations in closed loop systems?
They create a nutrient source that promotes significant biological fouling
Why should automatic municipal water make-up not be used in glycol systems?
It introduces biological contaminants and dissolved corrosive gases
What is the primary purpose of adding glycol to closed system heating or cooling water?
To prevent freezing damage
Which type of glycol is toxic and should not be used where contact with food products may occur?
Ethylene glycol
Why should automotive glycol not be used in industrial closed loop systems?
All of the above
What is a good indicator of whether glycol contains adequate inhibitor in a system?
The pH of the system
What happens if ethylene glycol and propylene glycol are used together in a closed system?
They cause inhibitors to precipitate
Learn about the use of glycol in closed system heating or cooling water to prevent freezing damage. Understand the differences between ethylene glycol and propylene glycol, including their toxicity and suitable applications.
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