Results of the HP LDPE Process Exergy Analysis

4 in the form of a Grassmann diagram, which shows the flow of exergy in the process. 

The efficiency of the HP LDPE process is 91%. If the steam bonus is taken into account, the process efficiency, based on exergy, is 91 + 1.1 + 0.05 = 92.2%. 

Grassmann diagram of the HP LDPE process. Available work, lost work, and potential steam bonus streams are given as a percentage of the total input. 

Pie chart of main exergy losses in the HP LDPE process. 

Unit Exergy Loss (%) Exergy Loss (MJ/kgPE) Exergy Loss ( /kgPE) 

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