Which behavior causes diminished cooling when a refrigeration system experiences oil logging?

💡 Explanation

Oil logging reduces cooling because oil collects in the evaporator; the resultant oil fouling forms an insulating layer that impedes the refrigerant's latent heat transfer. Therefore, less heat is absorbed, rather than temperature increases from compression or altered expansion-valve control.

• Which risk increases, following switchgear maintenance, if a 3-phase circuit breaker reclosing sequence is misconfigured?
• Which undesirable behavior can result within pulsed laser cooling systems if an accumulator's pressure fluctuates with insufficient recharge?
• Which risk increases when cyclic redundancy check (CRC) processing is skipped during digital television (DTV) signal transmission?
• Which effect occurs when a refrigeration system uses an overcharge of refrigerant R-134a?
• Which risk increases when inductive load current exceeds breaker rating?
• Which consequence results when rapid closing of a heavily inductive electrical circuit causes transient voltage overshoot?