CHILLER SYSTEM - Quiz

1) How the brine freezing on cooling coil is prevented in ice plant?

Add water to brine Add glycol to brine Reduce concentration Increase salt concentration

2) What is the cause of discolouration of oil in a compressor?

Moisture in oil Dirty drier filter Low pressure of oil Liquid refrigerant in oil

3) What is the effect if the oil return from oil separator to the compressor is blocked?

Suction pressure rises Discharge pressure decreases Compressor oil level falls down Compressor oil level increases

4) What is the cause of compressor knocking sound in chiller AC plant?

High oil level Liquid refrigerant entry Shortage of refrigerant Air entered into system

5) Which causes the filter drier to become cold in chiller AC plant?

Over charge Under charge High condensing pressure Partial blocking of filter drier