absorbtionjäähdytys
Absorbtionjäähdytys is a refrigeration technology that uses a heat source to drive a cooling cycle, rather than mechanical work. The system consists of a refrigerant that evaporates at low pressure, absorbing heat and producing a cold effect, and an absorbent that absorbs the refrigerant and releases it at higher pressure after a heat input. Common refrigerant‑absorbent pairs include ammonia‑water and lithium bromide‑water; the choice depends on the desired temperature range and the available heat source.
In operation, the low‑pressure refrigerant vapor is condensed in a heat exchanger by the heated absorbent. The
Historically, absorption refrigeration was first patented in the 19th century and saw widespread use in large