Emirates National Oil Company Senior Instrumentation Technician Interview Questions and Answers

A compressor with two stages of reciprocating motion.

• Two-stage reciprocating compressors have two cylinders that compress the air twice.

• The first stage compresses the air and sends it to the second stage for further compression.

• This type of compressor is commonly used in industrial applications such as refrigeration and air conditioning.

• The two-stage design allows for higher efficiency and greater pressure output compa

The chiller refrigeration cycle is a process that removes heat from a space or substance using a refrigerant.

• The cycle starts with the compressor compressing the refrigerant gas.

• The compressed gas then flows through the condenser where it releases heat and becomes a liquid.

• The liquid refrigerant then flows through the expansion valve, where it expands and becomes a gas again, absorbing heat in the process.

• The gas then ...read more