What can be effectively used for leak detection with high-pressure refrigerants?

Using soap bubbles for leak detection with high-pressure refrigerants is effective because soap creates a visual indication when there is a leak. When applied to areas where leaks might occur, such as joints or seals, the soap solution will form bubbles at the point of escape, clearly indicating the presence of refrigerant gas. This method is widely used because it is straightforward, cost-effective, and can be applied quickly without needing specialized equipment.

In contrast, while electrical detectors can be used to sense the presence of refrigerants, they are more suited for low-pressure scenarios or continuous monitoring rather than immediate leak detection in high-pressure systems. Colored dyes, although they can sometimes be used in certain applications, typically require specific systems designed to utilize them, making them less versatile for general leak detection with high-pressure refrigerants. Paper towels, while useful for cleaning, do not provide a reliable method for detecting leaks as they cannot visibly indicate where gas is escaping. Thus, soap bubbles stand out as a practical and effective solution for locating leaks in high-pressure refrigerant systems.