units problem
 

hello i am doing diesel combustion problem. i want to know when i use thermal Nox and Mauss soot model in which units i geet my results i.e NOx and SOot values

Re: units problem
 

mass fraction

Re: units problem
 

thanks but can you tell me how to change units in to g/kWh

Re: units problem
 

Get the mass flow of your emissions at the outlet. This should be in your info file. If not use the 'operate' commands to get a value. Divide by the heat input into your system.

Re: units problem
 

q_SOOT (or q_NOx) in [g/(kWh)] if I'm right it's:
SOOT_conc*cyl_mass*60^2*10^6*number_of_cyl/(pme*cyl_max_volume)
where pme is in Pa (Star writes in Pa) and cyl_max_vol is in m^3

Re: units problem
 

Hi Andrea Can u tell me whats pme in equatoin you gave

Re: units problem
 

mean effective pressure

Re: units problem
 

Thanks

Re: units problem
 

yes, and note that cylinder mass in that formula it's in kg as written out by Star