# units problem

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 October 30, 2007, 09:39 units problem #1 hass Guest   Posts: n/a Sponsored Links 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

 October 30, 2007, 11:28 Re: units problem #2 usker Guest   Posts: n/a mass fraction

 October 30, 2007, 13:31 Re: units problem #3 hass Guest   Posts: n/a thanks but can you tell me how to change units in to g/kWh

 October 31, 2007, 09:12 Re: units problem #4 dong Guest   Posts: n/a 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.

 November 1, 2007, 09:58 Re: units problem #5 Andrea Guest   Posts: n/a 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

 November 5, 2007, 10:38 Re: units problem #6 hass Guest   Posts: n/a Hi Andrea Can u tell me whats pme in equatoin you gave

 November 5, 2007, 20:59 Re: units problem #7 usker Guest   Posts: n/a mean effective pressure

 November 6, 2007, 04:19 Re: units problem #8 hass Guest   Posts: n/a Thanks

 November 8, 2007, 12:40 Re: units problem #9 Andrea Guest   Posts: n/a yes, and note that cylinder mass in that formula it's in kg as written out by Star

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