What method can be used to hasten the removal of refrigerant from a system?

Cooling the recovery cylinder is an effective method to hasten the removal of refrigerant from a system. When the recovery cylinder is cooled, the pressure inside the cylinder decreases, which allows the refrigerant to condense and transition from a gaseous phase back into a liquid more efficiently. This process encourages a greater flow rate of refrigerant being removed from the system because the refrigerant vapor has a greater tendency to move into a lower pressure environment.

In addition, reducing pressure in the recovery cylinder through cooling enables the refrigerant in the system to flow more readily into the cylinder, facilitating quicker recovery times. Proper management of temperature and pressure gradients is essential during refrigerant recovery processes to ensure safety and efficiency.

The other options do not effectively contribute to hastening the removal of refrigerant. Increasing ambient temperature could raise the pressure within the system and the recovery cylinder, potentially slowing down the process. Using a larger recovery tank could provide more capacity but does not inherently increase the rate of refrigerant migration into the tank. Heating the refrigerant line might seem counterintuitive as it could cause the refrigerant to vaporize further, thus increasing pressure instead of aiding in quicker removal.