Evaporators for use in the industrial crystallisation of cooking oil; evaporators, heat exchangers, heaters, filters or membrane filters for use in crystallisation processes of cooking oil, in particular evaporators, heat exchangers, heaters, filters or membrane filters for palm oil for the separation of oil (olein) from stearin; evaporators, heat exchangers, heaters, filters or membrane filters for use in crystallisation processes of cooking oil, in particular palm oil; evaporators, heat exchangers, heaters, filters or membrane filters for use in crystallisation processes of cooking oil, in particular palm oil; evaporators, heat exchangers, heating apparatus, filters or membrane filter, all the aforesaid goods for use in refineries for cooking oil; evaporative cooling towers for use in the crystallisation processes of cooking oil, in particular evaporative cooling towers for separating of olein in palm oil from stearin; evaporative cooling towers for use in the crystallisation processes of cooking oil, in particular palm oil; cooling evaporators; evaporative cooling towers for use in the crystallisation processes of cooking oil, in particular palm oil.;