ecnet.blends
ecnet.blends.cetane_number
Calculates blended CN from individual CNs, volume fractions of each individual CN in blend; blend assumed proportionally linear: NREL/SR-540-36805
Parameters:
Name | Type | Description | Default |
---|---|---|---|
values |
list[float]
|
CN values |
required |
vol_fractions |
list[float]
|
list of volume fractions, sum(vol_fractions) == 1.0 |
required |
Returns:
Name | Type | Description |
---|---|---|
float |
float
|
blended CN |
Source code in ecnet/blends/predict.py
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ecnet.blends.yield_sooting_index
Calculates blended YSI from individual YSIs, volume fractions of each individual YSI in blend; blend assumed proportionally linear: https://doi.org/10.1016/j.fuel.2020.119522
Parameters:
Name | Type | Description | Default |
---|---|---|---|
values |
list[float]
|
YSI values |
required |
vol_fractions |
list[float]
|
list of volume fractions, sum(vol_fractions) == 1.0 |
required |
Returns:
Name | Type | Description |
---|---|---|
float |
float
|
blended YSI |
Source code in ecnet/blends/predict.py
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|
ecnet.blends.kinematic_viscosity
Calculates blended KV from individual KVs, volume fractions of each individual KV in blend; equation 8 from paper "Estimation of the kinematic viscosities of bio-oil/alcohol blends: Kinematic viscosity-temperature formula and mixing rules" by Ding et al.
$$ 1 / ln(2000 * kv_{blend}) = \sum_{i}^{N} \frac{V_i}{ln(2000 * kv_i)} $$
Where $$V_i$$ is the volume fraction of the ith component, $$kv_i$$ is the kinematic viscosity of the ith component, and $$kv_{blend}$$ is the kinematic viscosity of the blend
Parameters:
Name | Type | Description | Default |
---|---|---|---|
values |
list[float]
|
KV values, in cSt |
required |
vol_fractions |
list[float]
|
list of volume fractions, sum(vol_fractions) == 1.0 |
required |
Source code in ecnet/blends/predict.py
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ecnet.blends.cloud_point
Calculates blended CP from individual CPs, volume fractions of each individual CP in blend; from paper "Predictions of pour, cloud and cold filter plugging point for future diesel fuels with application to diesel blending models" by Semwal et al.
$$ CP_{b}^{13.45} = \sum_{i}^{N} V_{i} CP_{i}^{13.45} $$
Where $$V_i$$ is the ith components weight percent, $$CP_i$$ is the ith component's CP, in Rankine, and $$CP_b$$ is the blend's CP, in Rankine
Parameters:
Name | Type | Description | Default |
---|---|---|---|
values |
list[float]
|
CP values, in Celsius |
required |
vol_fractions |
list[float]
|
list of volume fractions, sum(vol_fractions) == 1.0 |
required |
Returns:
Name | Type | Description |
---|---|---|
float |
float
|
blended CP, in Celsius |
Source code in ecnet/blends/predict.py
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|
ecnet.blends.lower_heating_value
Calculates blended LHV from individual LHVs, volume fractions of each individual LHV in blend; blend assumed proportionally linear: https://doi.org/10.1016/j.ejpe.2015.11.002
Parameters:
Name | Type | Description | Default |
---|---|---|---|
values |
list[float]
|
LHV values |
required |
vol_fractions |
list[float]
|
list of volume fractions, sum(vol_fractions) == 1.0 |
required |
Returns:
Name | Type | Description |
---|---|---|
float |
float
|
blended LHV |
Source code in ecnet/blends/predict.py
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|