Which of the following is a common application of evaporative cooling?

Evaporative cooling is a process that utilizes the natural phenomenon of water evaporation to lower air temperature. In this method, hot air is drawn through water-saturated pads, where it cools as the water evaporates. This technique is particularly effective in environments with low humidity, making it highly suitable for greenhouses.

In greenhouses, maintaining optimal temperature and humidity levels is crucial for plant health. The evaporative cooling method provides an efficient and cost-effective way to cool the air, allowing for better control of the greenhouse environment. This not only helps in reducing temperatures during hot weather but also increases humidity, which benefits many plants that thrive in such conditions.

While commercial freezers, residential heating, and industrial chillers serve specific cooling or heating purposes, they do not typically employ evaporative cooling as their primary mechanism. Instead, they rely on refrigeration cycles or other methods that do not involve evaporation in the same beneficial and energy-efficient manner that is utilized in greenhouses.