Which statement is true regarding fabric filters?

Fabric filters are designed to capture particulate matter from flue gases and have become a standard solution in various industrial applications due to their high efficiency. When functioning correctly, these filters can consistently achieve an efficiency of over 99%. This high level of performance is a significant advantage as it effectively minimizes air pollution and helps industries meet environmental regulations.

The construction of fabric filters allows them to trap a wide range of particle sizes, resulting in the mentioned high efficiency. They also have a relatively low pressure drop across the filter, making them suitable for continuous operation in industrial settings. This capability not only enhances air quality but also increases the overall efficiency of the process by keeping particulate emissions at a minimum.

Various maintenance practices can impact their performance, including the frequency of cleaning and the materials used for construction, but their inherent design and operational principles support achieving and maintaining an efficiency rate of +99%.

In contrast, other statements about fabric filters do not accurately represent their capabilities or applications. For example, some may suggest they are variable in efficiency, but that typically occurs under conditions of poor operation or maintenance. They are, in fact, effective in industrial environments, especially where regulatory compliance for emissions is crucial. Lastly, while maintenance is needed, frequent cleaning is not always necessary if they