Which component absorbs heat from the refrigerated space?

Which component absorbs heat from the refrigerated space?

• A. Evaporator
• B. Condenser
• C. Compressor
• D. Expansion device

Answer: (A)

The evaporator absorbs heat from the refrigerated space. In an ammonia refrigeration cycle, it acts as the heat exchanger where the low-pressure, low-temperature liquid ammonia takes in heat from the space you’re cooling. As it absorbs this heat, the ammonia boils and changes to a vapor, delivering the cooling effect through the latent heat of vaporization. The other components have different roles: the condenser rejects heat to the surroundings, the compressor raises the vapor’s pressure to keep the cycle moving, and the expansion device lowers the liquid’s pressure to allow evaporation.

The evaporator absorbs heat from the refrigerated space. In an ammonia refrigeration cycle, it acts as the heat exchanger where the low-pressure, low-temperature liquid ammonia takes in heat from the space you’re cooling. As it absorbs this heat, the ammonia boils and changes to a vapor, delivering the cooling effect through the latent heat of vaporization. The other components have different roles: the condenser rejects heat to the surroundings, the compressor raises the vapor’s pressure to keep the cycle moving, and the expansion device lowers the liquid’s pressure to allow evaporation.