Global Exergy Flows

As discussed in Chapter 6, the first law of thermodynamics states that energy can be neither created nor destroyed, but it does not imply that all energy will be converted into a form that is useful (electricity or mechanical work). 

Coal consumption by selected world region. (Data up to 2006, projections after 2006.) 

Global Climate and Energy project at Stanford University (http //goep.stanford.edu) l 10 DCIP 20002006 

This then yields only 1.5 TW, which is fairly small compared to what the energy demand truly is. 

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As some intermediate thermodynamic data are missing or not well known (enthalpy of mixing of CuCl and CuCl2 in HC1/H20 mixtures for example) and some heat exchanges or separation are not linear (for instance, HC1/H20 mixture has an azeotrope which cannot be crossed), we decided to proceed to a global exergy analysis instead of a flow sheet analysis. 

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