Sorption air conditioning
The sorption air conditioning system , or more generally the sorption system , is used to cool rooms and is operated with heat.
In the sorption air conditioning system, the so-called adsorbent or absorbent is dried by adding heat (hot water from a solar module or a gas heater, or waste heat from a power plant ) . This releases water vapor , which flows into a condenser , where it is liquefied by cooling and fed to an evaporator. An additional cooler is required for the condenser, which must emit both the room heat and the heat used to dry the adsorbent to the environment. Once the adsorbent has dried, the supply of heat to it is stopped. The dried adsorbent then absorbs water vapor from an evaporator operated with room heat, whereby the evaporator and thus the room is cooled. The evaporation takes place under a very low pressure of 10 milli bar , whereby the water evaporates even at temperatures between 4 ° C and 7 ° C.
An adsorption system uses a zeolite or silica gel as the adsorbent , while an absorption system uses a water - ammonia mixture or a lithium - bromide solution as the absorbent .