Heat Exchanger¶
Create Function¶
- create_heat_exchanger(net, from_junction, to_junction, diameter_m, qext_w, loss_coefficient=0, name=None, index=None, in_service=True, type='heat_exchanger', **kwargs)¶
Creates a heat exchanger element in net[“heat_exchanger”] from heat exchanger parameters.
- Parameters
net (pandapipesNet) – The net for which this heat exchanger should be created
from_junction (int) – ID of the junction on one side which the heat exchanger will be connected with
to_junction (int) – ID of the junction on the other side which the heat exchanger will be connected with
diameter_m (float) – The heat exchanger inner diameter in [m]
qext_w (float) – External heat flux in [W]. If positive, heat is derived from the network. If negative, heat is being fed into the network from a heat source.
loss_coefficient (float) – An additional pressure loss coefficient, introduced by e.g. bends
name (str, default None) – The name of the heat exchanger
index (int, default None) – Force a specified ID if it is available. If None, the index one higher than the highest already existing index is selected.
in_service (bool, default True) – True if the heat exchanger is in service or False if it is out of service
type (str) – Not used yet
kwargs – Additional keyword arguments will be added as further columns to the net[“heat_exchanger”] table
- Returns
index - The unique ID of the created heat exchanger
- Return type
int
- Example
>>> create_heat_exchanger(net, from_junction=0, to_junction=1, >>> diameter_m=40e-3, qext_w=2000)
Component Table Data¶
net.heat_exchanger
Parameter |
Datatype |
Value Range |
Explanation |
name |
string |
Name of the heat exchanger |
|
from_junction |
integer |
\(>\) 0 |
Index of junction at which the heat exchanger starts |
to_junction |
integer |
\(>\) 0 |
Index of junction at which the heat exchanger ends |
diameter_m |
float |
\(\gt\) 0 |
Equivalent inner diameter of the heat exchanger [m] |
qext_w |
float |
The heat flow entering or leaving the heat exchanger [W] |
|
loss_coefficient |
float |
\(\geq\) 0 |
An additional loss coefficient which might account for e.g. bends |
in_service |
boolean |
True / False |
Specifies if the heat exchanger is in service. |
type |
string |
Type variable to classify heat exchangers |
Result Table Data¶
net.res_heat_exchanger
Parameter |
Datatype |
Explanation |
v_mean_m_per_s |
float |
The mean velocity of fluid in the heat exchanger [m/s] |
p_from_bar |
float |
Pressure at “from”-junction [bar] |
p_to_bar |
float |
Pressure at “to”-junction [bar] |
t_from_k |
float |
Temperature at “from”-junction [K] |
t_to_k |
float |
Temperature at “to”-junction [K] |
mdot_from_kg_per_s |
float |
Mass flow into heat exchanger [kg/s] |
mdot_to_kg_per_s |
float |
Mass flow out of heat exchanger [kg/s] |
vdot_norm_m3_per_s |
float |
Norm volume flow [m^3/s] |
reynolds |
float |
Average Reynolds number |