What is the liquid phase saturation pressure range for medium-pressure appliances at 104°F?

The correct range for the liquid phase saturation pressure for medium-pressure appliances at 104°F falls between 45 psia to 170 psia due to the behavior of refrigerants at those temperatures. In medium-pressure systems, this range corresponds to the pressures at which the refrigerant transitions from a saturated liquid to a vapor state.

Understanding the saturation pressure is critical for effective and safe operation of refrigeration systems. At 104°F, if a refrigerant is within this pressure range, it indicates that the system can operate effectively in medium-pressure conditions, ensuring optimal performance of the cooling cycle.

The other ranges provided either fall below or exceed what is typical for medium-pressure appliances at that temperature. Pressures below 45 psia could indicate that the refrigerant is operating in a low-pressure range, which would not be appropriate for a medium-pressure appliance, while pressures above 170 psia are characteristic of high-pressure systems or appliances, which require different handling, safety considerations, and operational practices.