Cogeneration for Dummies

[sld]

I see my misunderstanding now. I thought that because the condensing CHP generated only electricity I could use that efficiency for the whole process. Yet it should be clear that I cannot just negate the heat possibility and its effect in the efficiency of the plant.
I was thinking of using a CEH parameter similar to yours; it feels good to have some support about it.
 
Thank you very much, Antti.