For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then_________________?

Refrigeration and Air Conditioning 23/05/2020

A. bigger cabinet should be used
B. smaller cabinet should be used
C. perfectly tight vapour seal should be used
D. refrigerant with lower evaporation temperature should be used
E. refrigerant with high boiling point must be used

Related Mcqs:

    Allowable pressure on high-pressure side or ammonia absorption system is of the order of_________________?
    A. atmospheric pressure B. slightly above atmospheric pressure C. 2-4 bars D. 5-6 bars E. 7-10 bars...
    Presence of moisture in a refrigerant affects the working of___________________?
    A. compressor B. condenser C. evaparator D. expansion valve E. heat transfer...
    In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be_________________?
    A. high, of the order of 25° B. as low as possible (3 to 11°C) C. zero D. any value E. none of the above...
    The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will______________________?
    A. increase B. decrease C. remain unaffected D. may increase or decrease depending on the type of refrigerant used E. unpredictable...
    A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is________________?
    A. Ammonia B. Carbon dioxide C. Freon D. Brine E. Hydrocarbon refrigerant...

Leave a Reply

Your email address will not be published. Required fields are marked *