Which risk increases when ethylene glycol contaminates an R-134a chiller?

💡 Explanation

Glycol contamination leads to acid formation because of the esterification reaction between glycol and the POE compressor oil causing oil breakdown, therefore decreasing its viscosity, rather than improving metering; boiling point depression is the primary effect, leading to less efficient compressor lubrication.

• Which risk increases when a commercial aircraft wing's boundary layer experiences premature transition to turbulence?
• Which outcome occurs when overheating causes excessive electron-hole pairs in a MOSFET?
• Which adverse outcome is likely when a phased array antenna designed for satellite communication experiences significant element gain variation?
• Which consequence results when ultrasonic fuel injection deposits form in gasoline direct injection (GDI) engine injectors?
• Which outcome occurs when excessive vibration induces fatigue failure in a composite beam embedded in wing structure?
• Which outcome occurs when excessive cylinder pressure overcomes lubricating oil's limit in a reciprocating diesel engine?