What is the primary purpose of a filter drier in refrigeration?

The primary purpose of a filter drier in refrigeration systems is to clean and dry the refrigerant. This component plays a crucial role in ensuring the efficiency and longevity of the system. As the refrigerant circulates through the system, it can pick up moisture and contaminants, such as dirt or metallic particles, which can lead to issues like corrosion or compressor failure.

The filter drier contains both a filter and a desiccant. The filter element captures solid contaminants, while the desiccant absorbs moisture, thereby preventing ice formation that could obstruct the flow of refrigerant. By keeping the refrigerant clean and dry, the filter drier helps maintain system performance and reliability, which is critical for effective cooling and energy efficiency in refrigeration applications.