[TRNSYS-users] type 907 - IC Engine

[Jeff Thornton]

Federica,

If you click on the various cells in the spreadsheet, you can see the 
formulas that are used to generate the values.

Total Heat is the sum of five parts; Jacket Heat, Exhaust Heat, Heat 
Rejected to Atmosphere, Oil Cooler Heat, and Aftercooler Heat

The energy input is based on the HHV - which can be sen from the formula 
in the spreadsheet.

Jeff

---
Jeff Thornton
President - TESS LLC
22 N. Carroll Street, Madison WI USA 53703
Office: (608) 274-2577  Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton at tess-inc.com


On 07/24/2018 3:59 am, Federica Azzarri S238292 via TRNSYS-users wrote:
> 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.
> 
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