What process occurs when refrigerant is condensed in the condenser?

• A. It becomes a high-pressure liquid
• B. It becomes a low-pressure vapour
• C. It evaporates into gas
• D. It increases in temperature

Answer: (A)

When refrigerant is condensed in the condenser, it undergoes a phase change from a gas to a liquid due to the release of heat. This process occurs when the refrigerant, which is typically in a gaseous state at high pressure and temperature after leaving the compressor, flows through the condenser coils. As it passes through these coils, it dissipates heat to the surrounding air or water, leading to a drop in temperature and a change in phase.

As a result, the refrigerant becomes a high-pressure liquid. This high-pressure liquid is crucial for the refrigeration cycle to continue effectively, as it will then flow to the expansion device, where it will experience a drop in pressure and will subsequently evaporate, absorbing heat in the process.

In this context, options that suggest the refrigerant becoming a low-pressure vapor or evaporating into gas are not accurate during the condensation phase. Similarly, increasing temperature occurs during the compression phase, not in the condenser where heat is released. Thus, the correct answer aligns with the physical changes and principles governing refrigerant behavior in a refrigeration cycle.