Question 108Refrigeration/AC - QMED70% to pass
If an abnormally large difference is maintained between the evaporator refrigerant temperature and the box air temperature within the refrigerated compartment, what will be the result?
AI Explanation
The correct answer is A) the evaporator coil will tend to excessively frost.
When there is an abnormally large difference between the evaporator refrigerant temperature and the box air temperature, it causes the evaporator coil to become overcooled. This leads to excessive frost buildup on the coil, which reduces the airflow and heat transfer efficiency of the refrigeration system. The other options are incorrect because an abnormally large temperature difference does not directly cause the box temperature to be pulled down too low, the compressor to trip out on high head pressure, or the compressor to overheat due to high suction temperature.
Related Questions
#106 An evaporator coil of a single evaporator, air-cooled refrigerator is accumulating excessive frost due to a failure of the defrost mechanism. If the refrigerator features a thermostatically controlled box solenoid and a low-pressure cutout controlled compressor, as well as a high-pressure cutout, in terms of the compressor, what would be the most likely operating symptom? #107 Concerning the operation of refrigeration systems, frosting or sweating of a liquid line is usually indicative of what condition? #109 If the refrigeration compressor crankcase is sweating or frosting and is operating with an unusual noise, what is most likely the cause? #110 If a refrigeration system, equipped with a reciprocating compressor, has a liquid line solenoid valve that is leaking during the 'off' cycle, what would this cause? #111 If a refrigeration system were short of refrigerant, besides an elevated box temperature, what would be an observable symptom?