What is the correct sequential order of steps in the vapor-compression process?

The correct sequential order of steps in the vapor-compression process is compression, condensation, expansion, and vaporization. Understanding this process is key in air conditioning operations where a refrigerant circulates and changes state to absorb and release heat, thereby cooling the environment.

Starting with compression, the refrigerant enters the compressor as a low-pressure gas and is compressed to a high-pressure gas, raising its temperature in the process. This high-temperature, high-pressure gas then flows into the condenser. In the condenser, the refrigerant releases heat to the surrounding environment and condenses into a liquid as it cools down.

Next in the sequence is expansion. The high-pressure liquid refrigerant passes through an expansion valve or device, where a sudden drop in pressure occurs, allowing the refrigerant to expand and cool further. This low-pressure, low-temperature liquid then enters the evaporator.

The final step is vaporization, where the refrigerant absorbs heat from the indoor air as it evaporates back into a low-pressure gas. This process cools the air, and the cycle begins anew as the refrigerant returns to the compressor.

This cycle is fundamental to the operation of vapor-compression refrigeration systems, making the correct order essential for understanding how these systems function efficiently to provide