Energianalys av tryckluftsystem : så kan Billerud Skärblacka AB spara energi på tryckluft

Sammanfattning: Compressed air is a low efficiency media, and is thus very expensive to produce. This thesis work began by mind mapping how to create savings on the compressed air system at Billerud Skärblacka AB. Certain issues have been chosen for further studies. In order to identify the consumption of compressed air at PM 8 and 9, several measurements were made. At PM 8 there were not found any pressure drop, only large pressure variations for short periods of time. The causes of these pressure variations were not established. At PM 9 a registered pressure drop of around 1 bar was found. The cause of the pressure drop at PM9 was not found. A solution for the pressure drop was presented, which also could give an opportunity to reduce the nominal pressure in the compressed air system. An idea for improvement of the compressed air system structure has also been presented. A search for leakages on the compressed air system was carried out both at PM 8 and PM 9. Leakages at PM8 seem to be lower than at PM9. The search for leakages pointed out that those leakages on the compressed air system reduces the efficiency of the compressed air system. There are some large scale consumers of compressed air at Billerud, for example one function at PM8 and the cleaning function of timber trucks. One idea for reducing electrical consumption is to replace compressed air with a high pressure fan at PM8. In the report more suggestions for saving electrical energy regarding the other large scale consumers are presented.