Modeling a Aluminium die-cast part
Posted: 27 Feb 2018 11:50
Hello,
i'm trying to model the production of a Aluminium die-cast part with openLCA 1.5.0 and the ProBas plus database.
In this database are many different unit and system processes for the production of aluminium.
I used a defined unit process for the production of the aluminium and made two unit processes for the production of the die-cast part and the transport of the part.
When creating the product system i set the options "add connected processes" and "connect with system processes if possible". The providers in the input of the processes are the predefined providers.
When i calculate the product system i get a negative GWP (-7kg CO2 eq.), which is very unrealistic for the production of a aluminium die-cast part.
Can anyone help me with what i'm doing wrong?
Is it better to work with the system processes of the database?
Kind regards
Daniel
i'm trying to model the production of a Aluminium die-cast part with openLCA 1.5.0 and the ProBas plus database.
In this database are many different unit and system processes for the production of aluminium.
I used a defined unit process for the production of the aluminium and made two unit processes for the production of the die-cast part and the transport of the part.
When creating the product system i set the options "add connected processes" and "connect with system processes if possible". The providers in the input of the processes are the predefined providers.
When i calculate the product system i get a negative GWP (-7kg CO2 eq.), which is very unrealistic for the production of a aluminium die-cast part.
Can anyone help me with what i'm doing wrong?
Is it better to work with the system processes of the database?
Kind regards
Daniel