Coprocucts: Difference between revisions
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=Allocation= | ==Allocation== | ||
==Calculations== | ===Calculations=== | ||
===Parameters=== | ====Parameters==== | ||
*<math>Out_{value} = Out_a * Out_{cost} \,</math> = Value associated with the main output amount, after the losses. <math>Out_{cost}</math> = {energy value, market value, mass, volume} | *<math>Out_{value} = Out_a * Out_{cost} \,</math> = Value associated with the main output amount, after the losses. <math>Out_{cost}</math> = {energy value, market value, mass, volume} | ||
*<math>Copr_{value} = Copr_a*Copr_{cost} \,</math> = Value associated with the co-product output amount. <math>Copr{cost}</math> = {energy value, market value, mass, volume} | *<math>Copr_{value} = Copr_a*Copr_{cost} \,</math> = Value associated with the co-product output amount. <math>Copr{cost}</math> = {energy value, market value, mass, volume} | ||
*<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | *<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | ||
*<math>inputs \,</math> = Energy and Emissions for all the inputs of the current process ( in Joules and Grams per unit of Output for the current process ) | *<math>inputs \,</math> = Energy and Emissions for all the inputs of the current process ( in Joules and Grams per unit of Output for the current process ) | ||
===Calculations=== | ====Calculations==== | ||
For each allocation method it will be the same idea : | For each allocation method it will be the same idea : | ||
*We convert the amount given for the co product into a quantity of energy, mass, market value or volume depending on the allocation method chosen. | *We convert the amount given for the co product into a quantity of energy, mass, market value or volume depending on the allocation method chosen. | ||
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Note : <math>Out_{value} \,</math> and <math>Copr_{value} \,</math> are in the same unit, they can be both in Joules, Grams, Cubic Meter or Dollar depending of the allocation method chosen. | Note : <math>Out_{value} \,</math> and <math>Copr_{value} \,</math> are in the same unit, they can be both in Joules, Grams, Cubic Meter or Dollar depending of the allocation method chosen. | ||
=Displacement= | ==Displacement== | ||
==Calculations== | ===Calculations=== | ||
===Parameters=== | ====Parameters==== | ||
*<math>MixEE_{mpm} \,</math> = conventional [[Materials_Calculations#Mix|material mix]] energy and emissions, which are the necessary energy and emissions associated to the production of that material for the specified purpose for this specific mix. | *<math>MixEE_{mpm} \,</math> = conventional [[Materials_Calculations#Mix|material mix]] energy and emissions, which are the necessary energy and emissions associated to the production of that material for the specified purpose for this specific mix. | ||
*<math>S_{mpm} \,</math> = the share of the conventional material purpose mix displaced. | *<math>S_{mpm} \,</math> = the share of the conventional material purpose mix displaced. | ||
*<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | *<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | ||
===Calculations=== | ====Calculations==== | ||
*For each conventional material mix defined in the displacement ratios we grab the mix energy and emissions. We also grab at the same time the conventional material share. | *For each conventional material mix defined in the displacement ratios we grab the mix energy and emissions. We also grab at the same time the conventional material share. | ||
*We add to the co product energy and emissions the amount displaced, by each conventional material displaced : | *We add to the co product energy and emissions the amount displaced, by each conventional material displaced : | ||
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===XML Example=== | ====XML Example==== | ||
This example is extracted from the process [[600|Dry Mill Ethanol Production (US Industry Average)]]. It shows a coproduct which is calculated as a displacement. But if the user wants to change the method and calculate it with the allocation method, the different options which will be shown to the user are also defined. | This example is extracted from the process [[600|Dry Mill Ethanol Production (US Industry Average)]]. It shows a coproduct which is calculated as a displacement. But if the user wants to change the method and calculate it with the allocation method, the different options which will be shown to the user are also defined. | ||
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</source> | </source> | ||
=Common Calculations= | ==Common Calculations== | ||
==Parameters== | ===Parameters=== | ||
*<math>S_{copr}\,</math> = share of the coproduct | *<math>S_{copr}\,</math> = share of the coproduct | ||
*<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | *<math>ee \,</math> = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process ) | ||
==Calculations== | ===Calculations=== | ||
At the end of the calculation process for one of this co products we are doing a last operation which is multiplying the <math>ee \,</math> by a share. | At the end of the calculation process for one of this co products we are doing a last operation which is multiplying the <math>ee \,</math> by a share. | ||
This share can be used to define many co products and assign them shares. So the last operation will be : | This share can be used to define many co products and assign them shares. So the last operation will be : | ||
Latest revision as of 18:48, March 21, 2012
Allocation
Calculations
Parameters
- = Value associated with the main output amount, after the losses. = {energy value, market value, mass, volume}
- = Value associated with the co-product output amount. = {energy value, market value, mass, volume}
- = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process )
- = Energy and Emissions for all the inputs of the current process ( in Joules and Grams per unit of Output for the current process )
Calculations
For each allocation method it will be the same idea :
- We convert the amount given for the co product into a quantity of energy, mass, market value or volume depending on the allocation method chosen.
- We grab the amount after losses of the main output
- We calculate the allocation ratio which will be :
- We calculate the energy and emissions associated to that co product :
Note : and are in the same unit, they can be both in Joules, Grams, Cubic Meter or Dollar depending of the allocation method chosen.
Displacement
Calculations
Parameters
- = conventional material mix energy and emissions, which are the necessary energy and emissions associated to the production of that material for the specified purpose for this specific mix.
- = the share of the conventional material purpose mix displaced.
- = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process )
Calculations
- For each conventional material mix defined in the displacement ratios we grab the mix energy and emissions. We also grab at the same time the conventional material share.
- We add to the co product energy and emissions the amount displaced, by each conventional material displaced :
XML Example
This example is extracted from the process Dry Mill Ethanol Production (US Industry Average). It shows a coproduct which is calculated as a displacement. But if the user wants to change the method and calculate it with the allocation method, the different options which will be shown to the user are also defined.
<coproduct ref="116" method="displacement" amount="[dgs_params!A3];0;True;pounds">
<allocation value="energy" >
<option>energy</option>
<option>market</option>
<option>mass</option>
</allocation>
<conventional_products >
<product ref="75" purpose="stationary" mix="0" ratio="[composite_displacement_ratios!B3];0;True;percentage"/>
<product ref="117" purpose="stationary" mix="0" ratio="[composite_displacement_ratios!C3];0;True;percentage"/>
<product ref="91" purpose="stationary" mix="0" ratio="[composite_displacement_ratios!D3];0;True;percentage"/>
</conventional_products>
</coproduct>
Common Calculations
Parameters
- = share of the coproduct
- = Energy and Emissions associated to that co product ( in Joules and Grams per unit of Output for the current process )
Calculations
At the end of the calculation process for one of this co products we are doing a last operation which is multiplying the by a share. This share can be used to define many co products and assign them shares. So the last operation will be :
