[TRNSYS-users] type 907 - IC Engine

[Federica Azzarri S238292 <s238292@studenti.polito.it>]

Hi TRNSYS users,

I'm a master thesis student and I need to use type 907 to simulate an IC 
engine. I'm having some problems in the implementation of the efficiency 
map as an external file to this type. I already saw the example 
IC_Engine_Sample_Spreadsheet.xls inside the path C:\Trnsys17\Tess 
Models\SampleCatalogData\IC Engine, but I don't understand the values I 
must insert in the cells regarding four columns: ‘Energy Input’, 
'Exhaust Heat', 'Rejected to Atmosphere' and 'Total Heat'. At first, I 
thought that the ‘Total Heat’ values would refer to the maximum value of 
heat power that can be recovered (fuel power minus shaft power) but I 
verified that the values of ‘Total Heat’ column are all bigger that 
these values. Moreover, I guess that ‘Energy Input’ refers to the value 
of fuel power, but I was wondering how it’s evaluated: using the HHV or 
the LHV of the fuel?

Hoping to be clearer, I’m attaching in this message a picture 
highlighting my issues.

Thanks in advance to anyone will try to help me,

Federica.

Attachment: issues.PNG
Description: PNG image