Which component is responsible for pumping gas within the A/C plants?

The compressor is a crucial component in any air conditioning (A/C) system, including those used onboard naval vessels. It serves the primary function of compressing the refrigerant gas, thereby raising its pressure and temperature. This process facilitates the movement of the refrigerant through the various stages of the cooling cycle.

In the context of A/C plants, after the compressor adds energy to the refrigerant, it transforms the refrigerant from a low-pressure gas to a high-pressure gas. This compressed gas then moves to the condenser, where it dissipates heat and transforms into a liquid before being cycled back to the evaporator, where the cooling effect occurs.

Chill water refers to water that has been cooled for use in air conditioning but is not responsible for pumping gas. Reefers, which are refrigeration units, play a role in maintaining temperature for perishable goods but don't serve as the main component for gas movement within the A/C system. Seawater, while often used in various cooling processes, does not act as a medium for pumping gas in the A/C plants.

Thus, understanding the function of the compressor is key to grasping how air conditioning systems operate and the vital role it plays in managing onboard climate control.