Fig. 2From: RH simulation model for canvas paintings protected by an aluminium backplate and an additional hygroscopic layerSchematic representation of the four partial processes and the main inputs and outputs. The colours correspond with Fig. 5, and the number of the processes to the description in “Humidity change at the void from the vapour permeation through the canvas (Partial process 1)” to “Humidity change at the void from the vapour sorption in the linen canvas (Partial process 4)” sectionsBack to article page