Exergetic analysis of a continuous Bi-axially Oriented Polypropylene (BOPP) film unit in a plastic processing plant
by M. Tolga Balta, Arif Hepbasli, Ebru Hancioglu, S. Cihangir Ozcanli, Ertan Yilmazer, Ibrahim Yurdakul, Ozgur Disbudak
International Journal of Exergy (IJEX), Vol. 6, No. 3, 2009

Abstract: This paper deals with an exergy analysis of the stretching process of bi-axially oriented polypropylene films using a hot oil coiler along with stretching and crystallising unit. Exergy destructions and efficiencies in each of the system components are calculated, while the exergy loss and flow diagram (the so-called Grassmann diagram) is presented for the transverse direction (TD) unit. The so-called functional (on the product or benefit/fuel basis) and universal (on the output/input basis) exergy efficiency values of the TD unit are calculated to be 26.40% and 28.46% at a recommended exhaust air relative humidity of 0.0098 kg water/kg air, respectively.

Online publication date: Tue, 19-May-2009

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