Method for controlling the power of a sorption refrigeration system and device therefor

Method for controlling the capacity of a sorption refrigeration system, comprising an adsorber unit (A1, A2), a condenser (C) and an evaporator (E) through which flows a refrigerant, with an alternate supply of the adsorber unit by a valve means (HV_IN, HV_OUT) operated by a control unit, and with a cyclic process of at least one sorption phase and at least one heat recovery phase, the evaporator having a refrigerant return in which flows the refrigerant in a flow direction away from the evaporator, the method comprising the steps of:

• measuring a current refrigerant outlet temperature (Takt) in the refrigerant return of the evaporator,
• calculating an averaged refrigerant outlet temperature (Tgem) and comparing the averaged refrigerant outlet temperature with the current refrigerant outlet temperature (Takt)during the first and second sorption phase and determining the difference therebetween, and
• triggering a control signal provided to the valve means so as to terminate the sorption phase in response to the difference between the averaged refrigerant outlet temperature (Tgem) and the current refrigerant outlet temperature (Takt).