Author： Balta M. Tolga Hepbasli Arif Hancioglu Ebru Ozcanli S. Cihangir Yilmazer Ertan Yurdakul Ibrahim Disbudak Ozgur
Publisher： Inderscience Publishers
ISSN： 1742-8297
Source： International Journal of Exergy, Vol.6, Iss.3, 2009-05, pp. : 440-456
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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.
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