A cooling system that works best in dry climates is called which?

• A. Absorption
• B. Evaporative
• C. Geothermal
• D. Refrigerant-based

Answer: (B)

The main idea here is how humidity affects cooling methods and why evaporation-based cooling shines in dry climates. Evaporative cooling lowers air temperature by letting water absorb heat as it changes to vapor. When the air is dry, it has plenty of capacity to take up that water vapor, so evaporation proceeds quickly and a strong cooling effect results. In humid climates, the air is already saturated with moisture, so evaporation slows down and the cooling benefit drops.

That’s why evaporative cooling is especially effective in dry environments: it leverages the air’s low moisture to provide significant cooling with relatively low energy use. Other methods—absorption, geothermal, and refrigerant-based cooling—don’t rely on humidity to deliver their cooling, so they don’t have the same climate-specific advantage.