Environmental Engineering Reference
In-Depth Information
Fuel mix emission intensity − UK winter weekday
1.0
Emissions
0.8
0.6
0.4
0.2
0
2
4
6
8
10
12
14
16
18
20
22
24
Time (h)
Figure 6.5
Carbon emissions for each MWh of electricity generated based on the
UK fuel mix
Table 6.4
Techno-economical electrical and natural gas network
parameters
Electric network topology
Number of nodes
=
4
Number of branches
=
3
V
1
=
1
∠
0
◦
Electric slack node
Admittances
Y
12
=
Y
23
=
Y
34
=
205
.
29
−
j
38
.
17
P
grid
F
=
12
P
G
1
+
0
.
12
P
G
1
Electric DNO operation
=
n
β
=
1
P
grid
·
Electricity
price
,
β
P
total
P
Electricity energy cost
D
,
β
=
n
β
=
1
P
grid
·
Carbon
price
,
β
P
total
E
Electricity emission cost
D
,
β
Number of nodes
=
4
Natural gas network
Number of branches
=
3
topology
Natural gas slack node
p
1
=
1
Pipe friction
K
12
=
K
23
=
K
34
=
75
Compressor efficiency
K
com
=
0
.
1
G
grid
F
Natural gas DNO operation
=
5
G
G
1
+
0
.
05
G
G
1
=
n
β
=
1
G
grid
·
Gas
price
,
β
G
total
P
Natural gas energy cost
E
,
β
=
n
β
=
1
G
grid
·
Carbon
price
,
β
G
total
E
Natural gas emission cost
E
,
β
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