An interactive numerical process has been proposed to control the evaporating temperature of refrigerant for solar adsorption cooling machine with new correlation for the case of activated carbon AC35-methanol as working pair. The study has given a possibility to define the interactive relation between the evaporating temperature of refrigerant in the evaporator and the predicted temperature at start of adsorption in the adsorber. This can allow automating of the system using a thermostat for controlling and the regulation of opening of check valve to pass the refrigerant from the evaporator towards the adsorber.