Cyclopentane has a boiling point of 36 degrees – why can it be used as a refrigerant in refrigerators?

At this point, it is easy to undergo vaporization and absorb heat, as well as to liquefy and cycle

It relies on the throttling cooling effect of the compression refrigeration cycle, the Rankine cycle

It has little to do with the boiling point; it is mainly the heat taken away during phase change that makes compression and liquefaction possible

You mean 36°C at normal pressure. The thermal cycle of a refrigerator works roughly as follows: the compressor applies force to the working fluid (cyclopentane), causing it to be compressed into a liquid state; at the same time, its temperature rises. Heat is dissipated in the external heat exchanger. Once the liquid fluid reaches room temperature, it enters the capillary tube inside the refrigerator. Due to the capillary effect, the pressure of the liquid fluid decreases, its boiling point drops, and the fluid vaporizes into a gas state. This phase change requires heat absorption, which further lowers the temperature of the fluid, creating a temperature difference with the environment inside the refrigerator and thereby removing heat from it. After leaving the inside of the refrigerator, it enters the compressor again to be pressurized and liquefied.