The main purpose of this project was to make a survey of the steam and electricity consumption at Akzo Nobel Functional Chemistry AB and give suggestions of how to minimize them. These three different areas were focused on. First to make a survey of all the most important consumers, second to find the electricity consumption of the air compressors and the amount of waste heat produced from them. The third area was to calculate a model of how much fresh water that is used during a cooling sequence in the water based heating/cooling system of the reactors and give a suggestion of a suitable reuse for this water.The main result is a total survey of the energy consumption in steam and electricity. The survey shows that the second largest group after drying is heating of ventilation which gives big potentials of reducing the total steam consumption if there is a way of being self supporting in ventilation heat.

En vanlig orsak till brott i svetsade kolsta?lskonstruktioner kan ha?rledas till sma? sprickbildningar som uppsta?r i svetsgodset eller det omra?de av grundmaterialet som har pa?verkats strukturellt av energin fra?n svetsprocessen, a?ven kallad HAZ. Dessa sprickor uppsta?r ofta timmar eller dagar efter avslutad svetsning och beror pa? en kombination av va?te, en ha?rd och spro?d mikrostruktur och na?rvaro av spa?nningar.Fo?r att undvika dessa sprickor kan man fo?rva?rma materialet innan svetsning. Den fo?rho?jda arbetstemperaturen ger en la?ngsammare svalning vilken minskar risken fo?r martensitbildning och la?ter va?te diffundera ut fra?n svetsfo?rbandets kritiska delar.