A batch crystalliser contains 12000 kg of solution at 15C with a salt concentration of 80 g kg1. The solubility of the salt decreases significantly with higher temperature, thus crystallisation is to be achieved by heating the solution up to 90C where the salt solubility is 10 g kg1. At the end of the batch crystallisation time, the level of supersaturation is 1.1. The specific heat of the solution is 4 kJ kg1 C 1 and the heat of