Final answer:
Non-azeotropic refrigerant blends can leak from a system through diffusion, permeation, and mechanical leaks.
Step-by-step explanation:
Non-azeotropic refrigerant blends can leak from a system through several mechanisms, including diffusion, permeation, and mechanical leaks.
Diffusion occurs when the refrigerant molecules move through small openings or gaps in the system. This can happen due to a concentration gradient, where the refrigerant molecules move from an area of high concentration to an area of low concentration.
Permeation is the process by which the refrigerant molecules pass through the physical barriers of the system, such as seals or gaskets. This can occur over time due to the pressure difference between the inside and outside of the system.
Mechanical leaks can also occur if there are faulty connections, damaged pipes or tubing, or other defects in the system that allow refrigerant to escape.