The amount of refrigerant absorbed in the oil is affected by which of the following?

The correct choice is that both pressure and temperature affect the amount of refrigerant absorbed in the oil.

In refrigeration systems, the solubility of refrigerants in lubricating oils is directly influenced by the system's pressure and temperature. At higher temperatures, refrigerant molecules have more energy and are more prone to escaping from oil, which can reduce the amount absorbed. Conversely, when the temperature is lower, refrigerant solubility in oil generally increases.

Pressure also plays a critical role. When pressure is increased, the solubility of the refrigerant in the oil typically increases, allowing more refrigerant to be absorbed by the oil. Conversely, at lower pressures, the solubility diminishes and leads to a decline in the amount of refrigerant that the oil can retain.

Thus, understanding the interplay between pressure and temperature is essential for managing refrigerant absorption and ensuring the efficient operation of refrigeration and air conditioning systems. This is crucial for maintaining optimal performance, preventing oil breakdown, and safeguarding against compressor issues.