ecoinvent v3 - multiple instances of same flows
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- Posts: 30
- Joined: 19 Sep 2014 21:31
ecoinvent v3 - multiple instances of same flows
Dear Forum,
I have a question about the implementation of ecoinvent v3 in OpenLCA.
When selecting flows to add as inputs to a process (say "Tap water" in CA-QC to a water bottling process), I am presented multiple flows that are all seemingly identical: all have the same name, and all have the same UUID. However, they are stem from a different process.
The behaviour I would have hoped for was that all these flows would be collapsed in one, ant that the selection of the appropriate "default provider" would be done in the process modeling window or be set to be the market. As it stands, I have to include each flow one by one and check the default supplier to see if I have selected the appropriate flow (remember, it is always the same flow we are taking about - same name, same UUID, same properties). What is more, I have found that it is impossible to select an alternative supplier for the flow (except from toggling between U and S if both databases have been combined). This means that I cannot do sensitivity analyses that switch providers.
Am I doing something wrong?
If OpenLCA cannot (yet?) allow switching supplier for identical product flows, is there a way to see what the default supplier is for the options that are given when I select a flow, so as to avoid the "While you haven't found what you are looking for-->choose one, check default provider, close" loop?
Many thanks!
Pascal
I have a question about the implementation of ecoinvent v3 in OpenLCA.
When selecting flows to add as inputs to a process (say "Tap water" in CA-QC to a water bottling process), I am presented multiple flows that are all seemingly identical: all have the same name, and all have the same UUID. However, they are stem from a different process.
The behaviour I would have hoped for was that all these flows would be collapsed in one, ant that the selection of the appropriate "default provider" would be done in the process modeling window or be set to be the market. As it stands, I have to include each flow one by one and check the default supplier to see if I have selected the appropriate flow (remember, it is always the same flow we are taking about - same name, same UUID, same properties). What is more, I have found that it is impossible to select an alternative supplier for the flow (except from toggling between U and S if both databases have been combined). This means that I cannot do sensitivity analyses that switch providers.
Am I doing something wrong?
If OpenLCA cannot (yet?) allow switching supplier for identical product flows, is there a way to see what the default supplier is for the options that are given when I select a flow, so as to avoid the "While you haven't found what you are looking for-->choose one, check default provider, close" loop?
Many thanks!
Pascal
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- Posts: 30
- Joined: 19 Sep 2014 21:31
Re: ecoinvent v3 - multiple instances of same flows
Hi - just wanted to bring this up again. Does anyone have a hint on how to deal with this?
Thanks,
Pascal
Thanks,
Pascal
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- Joined: 03 Jun 2014 12:47
Re: ecoinvent v3 - multiple instances of same flows
hi! I just wanted to add that I'm wondering about the same problem!
Re: ecoinvent v3 - multiple instances of same flows
dear all,
thank you - we are aware of this issue and will update this in the next version of the ecoinvent database packages. It is not incorrect as it is (if I remember correctly, these flows have different UUIDs in ecoinvent) but it is of course somewhat inconvenient.
Best wishes
thank you - we are aware of this issue and will update this in the next version of the ecoinvent database packages. It is not incorrect as it is (if I remember correctly, these flows have different UUIDs in ecoinvent) but it is of course somewhat inconvenient.
Best wishes
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- Posts: 30
- Joined: 19 Sep 2014 21:31
Re: ecoinvent v3 - multiple instances of same flows
Hi Andreas,
Great to hear that you are planning on making changes. Just to clarify, the product UUID are actually all the same, but the associated activity UUID are different. For example, "electricity, high voltage" (UUID 66c93e71-f32b-4591-901c-55395db5c132) is associated with 1164 activities that each have unique UUIDs.
If ever you would like external input on "hoped for behaviour" of the software in using ecoinvent v3 (e.g. for developing user stories), we at CIRAIG would love to participate.
All the best,
Pascal
Great to hear that you are planning on making changes. Just to clarify, the product UUID are actually all the same, but the associated activity UUID are different. For example, "electricity, high voltage" (UUID 66c93e71-f32b-4591-901c-55395db5c132) is associated with 1164 activities that each have unique UUIDs.
If ever you would like external input on "hoped for behaviour" of the software in using ecoinvent v3 (e.g. for developing user stories), we at CIRAIG would love to participate.
All the best,
Pascal
Re: ecoinvent v3 - multiple instances of same flows
Hi all!
Has this issue been resolved? I have been bothered with the same for a long time.
All the best,
Jáchym
Has this issue been resolved? I have been bothered with the same for a long time.
All the best,
Jáchym
Re: ecoinvent v3 - multiple instances of same flows
Hi Jáchym,
thanks for following up - this is an issue of both openLCA and ecoinvent, which we will fully solve in openLCA 2.0. Basically, now openLCA has the limitation to not accept the same product flow more than once in inputs or outputs of processes, and in ecoinvent, the products from system and unit processes are different flows - both reasons together brought us to not merge the flows for now. However, the product flow name is now indicating the process which helps a lot in the identification, see screenshot below from a combined unit and system process ecoinvent database.
Hth,
Andreas
thanks for following up - this is an issue of both openLCA and ecoinvent, which we will fully solve in openLCA 2.0. Basically, now openLCA has the limitation to not accept the same product flow more than once in inputs or outputs of processes, and in ecoinvent, the products from system and unit processes are different flows - both reasons together brought us to not merge the flows for now. However, the product flow name is now indicating the process which helps a lot in the identification, see screenshot below from a combined unit and system process ecoinvent database.
Hth,
Andreas
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Re: ecoinvent v3 - multiple instances of same flows
Hi - I was wondering if the use of ecoinvent was now improved in openLCA 1.6 with ecoinvent 3.3. Specifically:
- Is is possible to have a combined Unit process and System database, and choose "Connect with system processes if possible"
- Is it possible to first choose an input product flow when modelling a unit process, and then choose any of the multiple unit processes providing that product via e.g. choose default provider or on the plan.
Thanks
- Is is possible to have a combined Unit process and System database, and choose "Connect with system processes if possible"
- Is it possible to first choose an input product flow when modelling a unit process, and then choose any of the multiple unit processes providing that product via e.g. choose default provider or on the plan.
Thanks
Re: ecoinvent v3 - multiple instances of same flows
Hi Pascal,
Also the limitation mentioned by Jáchym is solved in v1.6, openLCA can now deal with the same flow several times in input or output.
Maybe you can try yourself?
Cheers
Andreas
yes- Is is possible to have a combined Unit process and System database, and choose "Connect with system processes if possible"
Yes- Is it possible to first choose an input product flow when modelling a unit process, and then choose any of the multiple unit processes providing that product via e.g. choose default provider or on the plan
Also the limitation mentioned by Jáchym is solved in v1.6, openLCA can now deal with the same flow several times in input or output.
Maybe you can try yourself?
Cheers
Andreas
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- Posts: 30
- Joined: 19 Sep 2014 21:31
Re: ecoinvent v3 - multiple instances of same flows
This is wonderful news, I most definitely will now acquire ecoinvent v3.3 to try this out.
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