Databases Reference
In-Depth Information
(3)
Heat Energy Balance:
Summation of heat energy inputs and heat
energies produced by boilers should be equal to heat loads.
N
bh
Q
hi
+
Q
bhni
=
Q
hdi
,
(
i
=0
,
1
,...,
23)
(7.4)
n
=1
N
hexh
Q
hi
=
A
hexhn
Q
ghni
,
(
i
=0
,
1
,...,
23)
,
(7.5)
n
=1
where,
N
bh
: Number of boiler for heating,
Q
bhni
: Output of boiler for
heating.
(4)
Hot Water Supply Balance:
Summation of hot water inputs and
hot waters produced by boilers should be equal to hot water loads.
N
bw
Q
wi
+
Q
bwni
=
Q
wdi
,
(
i
=0
,
1
,...,
23)
(7.6)
n
=1
N
hexw
Q
wi
=
A
hexw
Q
gwni
,
(
i
=0
,
1
,...,
23)
,
(7.7)
n
=1
where,
N
bw
: Number of boiler for hot water supply.
(5)
Heat Balance:
Summation of the heat energy consumptions at
genelinks, for heat and hot water loads, and radiation values at cooling
towers should be equal to the (wasted) heat energy produced by CGSs.
N
g
N
gl
N
g
N
hexh
N
hexw
Q
gni
=
Q
ggLni
+
Q
ghni
+
Q
gwni
+
Q
ctni
,
(7.8)
n
=1
n
=1
n
=1
n
=1
n
=1
Q
gni
=
f
(
F
gni
)
,
(7.9)
where,
Q
ctni
: Radiation value at cooling tower,
Q
gni
: Heat output of
generator.
Facility constraints:
(6)
Various facility constraints including the
boundary constraints with state variables should be considered. Input-
output characteristics of facilities should be also considered as facility
constraints. For example, the characteristic of genelink is nonlinear
practically and the nonlinear characteristic should be considered in the
problem.
(7)
Operational rules:
If the facility is startup, then the facility should
not be shutdowned for a certain period. (Minimum up time). If the
