Which restriction decreases evaporator efficiency in a refrigerated shipping container?

💡 Explanation

Frost acts as insulation due to the mechanism of thermal resistance; because frost buildup hinders heat absorption in the evaporator coils, this latent heat transfer decreases refrigeration capacity below the needed setpoint, therefore affecting efficiency, rather than mechanical or environmental factors alone.

• Which risk increases when post-tensioned concrete tendons experience unexpected moisture ingress during grouting?
• Which consequence results when exceeding the rated flow in a hydraulic actuator during rapid cylinder extension?
• Which outcome occurs when a MOSFET, used within a high-frequency switching regulator, experiences a gate oxide breakdown?
• Which impairment increases if digital signal processing uses insufficient quantization bits during down-conversion within a software-defined radio receiver?
• Which risk increases for hydroelectric power distribution systems experiencing sustained reactive power imbalance?
• During a residential AC recharge, which outcome occurs when air contaminates the refrigerant?