kylmäaineabsorbentti

Kylmäaineabsorbentti refers to a substance used in absorption refrigeration cycles to absorb a refrigerant. In these systems, a refrigerant is a substance that easily evaporates and condenses, transferring heat. The absorbent's role is to facilitate the absorption of the refrigerant vapor, typically from the evaporator, into a liquid solution. This process is crucial for completing the refrigeration cycle.

Common absorbents include lithium bromide solution, which is often used with water as the refrigerant. Another common combination is ammonia as the refrigerant and water as the absorbent. The choice of absorbent depends on the operating temperatures and pressures required for the specific application.

The absorption process is driven by a temperature difference. The absorbent solution, when holding a large amount of refrigerant, is then pumped to a generator where it is heated. This heating releases the refrigerant vapor, which then moves on to be condensed and reused. The lean absorbent solution, now with less refrigerant, is returned to the absorber to pick up more refrigerant vapor. This continuous cycle allows for cooling without the need for a mechanical compressor, which is characteristic of vapor-compression refrigeration. Absorption refrigeration systems are often powered by waste heat or solar energy, making them an energy-efficient option in certain scenarios.