search

BioSTEAMDevelopmentGroup / biosteam

The Biorefinery Simulation and Techno-Economic Analysis Modules; Life Cycle Assessment; Chemical Process Simulation Under Uncertainty
Other
172 stars 33 forks source link

Number of ins and outs for BoilerTurbogenerator #14

Closed yalinli2 closed 4 years ago

yalinli2 commented 4 years ago

Describe the bug In biosteam v2.0.1, the numbers of ins and outs for BoilerTurbogenerator are both 3 (in v1.0.8, there are only 2 ins and 2 outs). This seems to be creating empty ins and outs streams.

However, I'm not sure if this unit is currently under development

Environment

yoelcortes commented 4 years ago

Thanks for catching this bug, although the number of ins and outs should still be 3. Please update "pip install biorefineries==2.0.3" and "pip install biosteam==2.1.0".

The reason there are 3 inlet streams is because the corn stover biorefinery sends a stream of solids (which includes lignin and wastewater residues), a stream of methane from anaerobic digestion, and a stream of make-up water to the boiler turbogenerator. So to summarize....

ins: [0] Liquid/solid feed that will be burned. [1] Gas that will be burned (optional). [2] Make-up water (optional).
outs : [0] Emission from burned liquid/solid feed. [1] Emission from burned gas feed (optional). [2] Blowdown water (optional).

Note that its ok if stream [1] is missing.

Side note: You're right that with biosteam v1 there was only one feed to be burned. This is because there was a mistake in the cornstover biorefinery where the methane from anaerobic digestion was not included. There was also another bug that increased the heat of combustion for waste water, but luckily both cancelled out.

yalinli2 commented 4 years ago

This looks good to me, thanks!!!