Abstract: The performance and reliability of air-conditioning system are greatly affected by the connection of air-conditioning system components, the processing quality and the cleanliness in the pipe. The quantitative calculation of the performance and reliability of air-conditioning system is carried out by using industrial endoscope combined with metallographic analysis, vacuum helium inspection, fatigue technical life, cooling capacity loss and so on. It is found that the pulse test life is reduced by 84% due to the internal machining defects. The air conditioning cooling capacity is 200 W, EER energy efficiency ratio is 0.25, and the total power loss is 58.2%. The quantitative control standards of air conditioning pipe welding, machining defects, and oil blockage are further formulated.

Key words: Endoscope, Air conditioning, Performance, Reliability, Quantitative control