If the suction pressure of a refrigerant system is dropped, which of the following would not occur?

When analyzing the scenario of a decreased suction pressure in a refrigerant system, it is crucial to understand the relationship between suction pressure and the properties of the refrigerant.

A drop in suction pressure generally leads to an increase in the boiling temperature of the refrigerant. This is because the boiling point of a refrigerant is directly linked to the pressure it is under: lower pressure allows the refrigerant to boil at a lower temperature. Therefore, reduced boiling temperature is expected when suction pressure falls, which aligns with thermal dynamics principles.

Additionally, with a lower suction pressure, the system may not effectively absorb heat, as the refrigerant might not vaporize efficiently or at the right temperatures to facilitate heat transfer. Hence, both increased condensation and reducing heat absorption would typically occur as a direct consequence of this pressure change.

In contrast, the rising temperature of the refrigerant is not a direct outcome of lowered suction pressure. In fact, as the pressure decreases, the refrigerant tends to operate at lower temperatures, potentially leading to better heat absorption due to its ability to boil more effectively. This understanding clarifies why the correct choice is the one that indicates rising temperature of refrigerant would not occur as a result of dropping suction pressure.