Purging Industrial Refrigeration Systems - ammonia industrial engineering

The video tutorial explains the operation of intelligent purging systems in industrial ammonia refrigeration systems. It covers the basic ammonia refrigeration cycle, highlighting the role of components like the compressor, condenser, and expansion valve. The tutorial addresses the issue of non-condensable gases and air, which can reduce system efficiency, and describes the operation of a purging unit that uses a separate refrigeration system to remove these gases. The purging process involves solenoid valves and a water bath to ensure optimal system performance.

What is the primary function of the compressor in an ammonia refrigeration system?

• To compress low-pressure vapor into high-pressure vapor

• To store liquid refrigerant

• To regulate the flow of refrigerant

• To condense ammonia into a liquid

How does the ammonia refrigerant absorb unwanted heat in the system?

• By condensing in the condenser

• By evaporating in the evaporator

• By flowing through the expansion valve

• By being stored in the receiver

Where do non-condensable gases typically accumulate in the ammonia refrigeration system?

• In the expansion valve

• At the top of the receiver and condenser outlet

• In the compressor suction line

• At the bottom of the receiver

What is the purpose of connecting a purging unit to the ammonia system?

• To add more refrigerant to the system

• To cool the ammonia refrigerant

• To remove non-condensable gases and air

• To increase the pressure in the system

What refrigerant is used in the separate refrigeration system within the purging unit?

• R22

• Ammonia

• R134a

• R452A

How does the purging unit ensure that only one solenoid valve is open at a time?

• By using a controller to signal the valves

• By using a manual switch

• By monitoring the liquid level

• By relying on gravity

What happens to the ammonia in the purging unit's evaporator?

• It remains in gas form

• It condenses into a liquid

• It is vented to the atmosphere

• It mixes with R452A