Bioenergy Supply Chain Design -
Price and Perishability
Below
are the links to the biologistic network data instances. You can download all
instances using the provided links.
Link 1: Computational Study Data
Instances
Link 2: Case Study Data Instances
To
download, right-click on a link and select "Save Link As" to
save it to your device.
Format:
1.
There are 20 different classes in the computational study
(C1, C2, …, C20), each containing 5 instances, resulting in a total of 100 instances.
2. For the case study, data
corresponding to case Case1 is provided. The remaining settings (Case2, Case3,
Case4, Case5) can be derived from Case1 based on the definitions outlined in
the paper.
3. Facility locations in the
computational study are specified using Cartesian (x–y) coordinates, whereas
the case study data utilize geographic coordinates (latitude and longitude). As
a result, different distance calculation methods are employed for the computational
and case study datasets.
4. The time period data includes time
zero (t=0) as the initial period.
5. Transportation costs from
collection facilities to biorefineries are approximately 10% lower than those
from farms to collection facilities or directly to biorefineries, reflecting
economies of scale.
6. For each instance, we have the
following data files:
·
CAPACITIES.txt: Contains the biofuel
inventory capacities at biorefineries, biomass inventory capacities at
collection facilities, and the production capacities of biorefineries.
·
DEMAND.txt: Contains biofuel demand at
each blending facility for every time period
·
FIXED2.txt: Contains collection facility
fixed costs for every time period
·
FIXED3.txt: Contains biorefinery fixed
costs
·
GammaX.csv: Contains break-even prices for
all farms
·
GammaY.csv: Contains the acreage of the land
allocated to switchgrass corresponding to each break-even price
·
INDEX.txt: Contains the cardinality of
all sets used in the model.
·
LOCATION1.txt: Location coordinates of farms
·
LOCATION2.txt: Location coordinates of
collection facilities
·
LOCATION3.txt: Location coordinates of
biorefineries
·
LOCATION4.txt: Location coordinates of
blending facilities
·
PARAMETERS.txt: Yield, biofuel price,
processing costs, holding and transportation costs for biofuel, holding cost
for Switchgrass, conversion rates, switchgrass price levels
7. For the case study, the following
additional data files are provided to evaluate distances between facility
pairs:
·
DISTANCE_IJ.csv: Distance between farms and
collection facilities
·
DISTANCE_JK.csv: Distance between collection
facilities and biorefineries
·
DISTANCE_IK.csv: Distance between farms and
biorefineries
·
DISTANCE_KZ.csv: Distance between
biorefineries and blending facilities
The
legend for the input data format is provided below:
Symbol |
Detail |
I |
Farms |
J |
Collection
facilities |
K |
Biorefineries |
Z |
Blending facilities |
L |
Capacity levels |
T |
Time period |
phi |
Switchgrass yield
per acre at farms |
pi_f |
Biofuel price |
t_f |
Per
unit per mile biofuel transportation cost |
t_1(ij) |
Per
unit per mile Switchgrass transportation cost from farm i
to collection facility j |
t_2(jk) |
Per
unit per mile Switchgrass transportation cost from collection facility j to
biorefinery k |
t_3(ik) |
Per
unit per mile Switchgrass transportation cost from farm i
to biorefinery k |
f_c(lt) |
Amortized
fixed cost of hiring and operating a collection facility of size l at
location j at time t |
f_b(l) |
Amortized
fixed cost of opening and operating a biorefinery of
size l at location k |
e_c(l) |
Available
inventory space for biomass of a collection facility with size l |
e_f(l) |
Available
inventory space for biofuel of a biorefinery with
size l |
k_f(l) |
Biofuel
production capacity of a biorefinery with
size l |
c_pr |
Processing
cost of one unit of Switchgrass |
h_m |
Holding
cost of one unit of Switchgrass type b for one unit of time |
h_f |
Holding
cost of one unit of biofuel for one unit of time |
D(zt) |
Amount
of biofuel demanded by blending facility z at time t |
nu_0 |
The
conversion rate of one unit of fresh Switchgrass to one unit of biofuel |
nu_t |
The
conversion rate of one unit of fresh Switchgrass to one unit of biofuel
originated at time t |
pi_m |
The price level for
purchasing of Switchgrass |
Fa. Location |
Location
coordinates of farm i |
Col. Location |
Location
coordinates of collection facility j |
Bio. Location |
Location
coordinates of biorefinery k |
Blen. Location |
Location
coordinates of blending facility z |