What type of pressure does a compressor provide in the evaporator?

In a refrigeration system, the compressor is responsible for compressing the refrigerant vapor, which leads to an increase in pressure and temperature of the refrigerant. However, it is important to understand the specific role of the evaporator within the entire system.

The evaporator operates at a low pressure to allow the refrigerant to absorb heat from the surrounding environment. This low-pressure condition is essential for the refrigerant to evaporate and turn into a vapor while absorbing heat during the refrigeration cycle. The refrigerant enters the evaporator as a low-pressure vapor, absorbing heat as it changes phase from liquid to gas, thereby providing cooling.

The compressor then takes this vapor and compresses it, which raises its pressure significantly before it moves on to the condenser. Hence, while the compressor creates high pressure after it has processed the vapor, the pressure within the evaporator itself remains low, facilitating the heat absorption action that is crucial for the refrigeration cycle to operate effectively. Therefore, the correct understanding is that the compressor provides a low-pressure environment in the evaporator.