What is Evacuation
Q: What is the purpose for ‘evacuating’ a refrigeration system? Evacuating a refrigeration system serves two primary objectives: 1. Removes non-condensables 2. Dehydrates (removes water vapor) If non-condensables such as air are not removed, the system will operate at higher than normal condensing pressures. This happens because the air is trapped at the top of the condenser, effectively reducing the condenser capacity. Increasing the condensing pressure results in higher compression ratios and higher discharge temperatures, both of which decrease system...
