Which equipment breaks up liquid via heat and produces a fine mist, yet is susceptible to wind or air currents?

The equipment that breaks up liquid via heat and produces a fine mist is a fogger. Foggers operate by using heat to vaporize the liquid pesticide, which is then turned into a fine mist or fog. This mist can cover large areas effectively and is particularly useful for applications in pest control where a broad distribution of the product is desirable.

However, foggers are susceptible to wind or air currents. This susceptibility means that when external factors such as wind are present, the fine droplets created by the fogger can be easily drifted away from the intended target area, reducing effectiveness and potentially posing risks to non-target organisms or locations. This characteristic is an important consideration in pest control planning to ensure accurate applications and minimize environmental impact.

In contrast, granular applications involve solid formulations and do not utilize heat or create a mist. Roller and gear pumps are types of pumping equipment used for liquid transfer but do not break up liquids into a fine mist nor are they reliant on heat, therefore, do not fit the description provided in the question.