How much refrigerant vapor remains in an average 350 ton R-11 chiller at 0 psig pressure after liquid removal?

The correct understanding of the amount of refrigerant vapor that remains in a 350-ton R-11 chiller at 0 psig pressure after liquid removal is essential for appropriate handling and management of refrigerants.

For a chiller operating with R-11, the typical refrigerant charge can be substantial. When discussing the vapor remaining after liquid removal, several factors are considered, including the design of the chiller, the refrigerant properties, and how much liquid can be evacuated without losing significant vapor.

In this scenario, the amount of vapor remaining in the system at 0 psig can often average around 100 pounds for a chiller of that size, which aligns with known operational characteristics. This is because, even after liquid refrigerant is removed, not all of it can be extracted, leading to a stable equilibrium of vapor that remains.

The other options do not reflect the average scenario for a 350-ton chiller with R-11 under these conditions, as they exceed the expected amount of vapor likely to remain once liquid refrigerant has been removed and the pressure has dropped to 0 psig. Thus, based on operational data and standards, the amount of refrigerant vapor left in the system is accurately assessed at 100 pounds.