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Are you talking about the update of the free libraries or the changes of the model you developed by yourself ?
I use the Github desktop app on Win10 and create a fold to save models developed by myself, The "history" tab will show the modifications ever made.
You can also check the free library on git in the same way.
hope this could help you.
Best,
Thanks adrpo, I found them on the bottom of " https://build.openmodelica.org/omc/buil … bit/older/ ":-)
HAHAHA, Thank you Arinomo23, I found previous versions on " https://build.openmodelica.org/omc/buil … bit/older/ ", I have no idea why they didn't show before:-)
Dear all,
I want to download previous nightly build OM such as the version released on June 30, I checked the older folder in download page but didn't find it. So is there still possible to download a previous nightly build?
I would really appreciate any kind of help.
Best wishes,
Thank your again Arinomo23, I will try to reset the parameters.
HI Arinomo23, thank you for your help, can you explain the assertion condition here in more detail?
Hi Arinomo23, thank you for your reply, this is the error message
"The following assertion has been violated during initialization at time 0.000000
noEvent(abs(SSHP.eva.Q_flow) < 200.0 * SSHP.eva.vol.steBal.cp_default * max(0.001 * SSHP.eva.vol.steBal.m_flow_small, abs(PANELin.m_flow)))"
"In SSHPTest.SSHP.eva.vol.steBal: Energy may not be conserved for small mass flow rates.
The implementation may require prescribedHeatFlowRate = false."
Dear all,
I tried to run a heat model that modified according to a example in OpenModelica v1.14.0-dev-26550-g915982a816 (64-bit), check of models completed successfully but the simulation can't execute.
Code:
model SSHPTest
package Medium1 = Buildings.Media.Water "Medium model";
package Medium2 = Buildings.Media.Water "Medium model";
parameter Modelica.SIunits.TemperatureDifference dTEva_nominal = -3
"Temperature difference evaporator outlet-inlet, panel side, 2018/03/25";
parameter Modelica.SIunits.TemperatureDifference dTCon_nominal = 3
"Temperature difference condenser outlet-inlet, waterloop side, 2018/03/25";
parameter Modelica.SIunits.HeatFlowRate QCon_flow_nominal = 4570
"Condenser heat flow rate, 2018/03/25,12:07";
parameter Modelica.SIunits.MassFlowRate m1_flow_nominal = QCon_flow_nominal/dTCon_nominal/4200
"Nominal mass flow rate at condenser";
Buildings.Fluid.HeatPumps.Carnot_TCon SSHP(
redeclare package Medium1 = Medium1,
redeclare package Medium2 = Medium2,
QCon_flow_max = 5500,
QCon_flow_nominal = QCon_flow_nominal,
allowFlowReversal1 = false,
allowFlowReversal2 = false,
dTCon_nominal = dTCon_nominal,
dTEva_nominal = dTEva_nominal,
dp1_nominal = 5000,
dp2_nominal = 5000,
etaCarnot_nominal = 0.7,
m1_flow_nominal = m1_flow_nominal,
show_T = true,
use_eta_Carnot_nominal = true) annotation(
Placement(visible = true, transformation(origin = {10, 10}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Buildings.Fluid.Sources.MassFlowSource_T LOOPin(
redeclare package Medium = Medium1,
T = 286,
m_flow = m1_flow_nominal,
nPorts = 1) annotation(
Placement(visible = true, transformation(origin = {-50, 30}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Buildings.Fluid.Sources.FixedBoundary LOOPout(
redeclare package Medium = Medium1,
nPorts = 1) annotation(
Placement(visible = true, transformation(origin = {70, 30}, extent = {{10, -10}, {-10, 10}}, rotation = 0)));
Buildings.Fluid.Sources.MassFlowSource_T PANELin(
redeclare package Medium = Medium2,
nPorts = 1, use_T_in = true) annotation(
Placement(visible = true, transformation(origin = {70, -10}, extent = {{10, -10}, {-10, 10}}, rotation = 0)));
Buildings.Fluid.Sources.FixedBoundary PANELout(
redeclare package Medium = Medium2,
nPorts = 1) annotation(
Placement(visible = true, transformation(origin = {-50, -10}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Sources.Constant TCon(k = 299) annotation(
Placement(visible = true, transformation(origin = {-50, 70}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Sources.Ramp PANELtem(duration = 60, height = 15, offset = 273 +10, startTime = 60) annotation(
Placement(visible = true, transformation(origin = {70, -70}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Math.Add QEva(k2 = -1) annotation(
Placement(visible = true, transformation(origin = {50, -30}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
Modelica.Blocks.Math.Gain mEva(k = -1 / cp2_default / dTEva_nominal) annotation(
Placement(visible = true, transformation(origin = {10, -70}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
final parameter Modelica.SIunits.SpecificHeatCapacity cp2_default=
Medium2.specificHeatCapacityCp(Medium2.setState_pTX(
Medium2.p_default,
Medium2.T_default,
Medium2.X_default))
"Specific heat capacity of medium 2 at default medium state";
equation
connect(LOOPin.ports[1], SSHP.port_a1) annotation(
Line(points = {{-40, 30}, {-20, 30}, {-20, 16}, {0, 16}, {0, 16}}, color = {0, 127, 255}));
connect(SSHP.port_b1, LOOPout.ports[1]) annotation(
Line(points = {{20, 16}, {40, 16}, {40, 30}, {60, 30}, {60, 30}}, color = {0, 127, 255}));
connect(PANELin.ports[1], SSHP.port_a2) annotation(
Line(points = {{60, -10}, {40, -10}, {40, 4}, {20, 4}, {20, 4}}, color = {0, 127, 255}));
connect(PANELout.ports[1], SSHP.port_b2) annotation(
Line(points = {{-40, -10}, {-20, -10}, {-20, 4}, {0, 4}, {0, 4}}, color = {0, 127, 255}));
connect(SSHP.TSet, TCon.y) annotation(
Line(points = {{-2, 20}, {-10, 20}, {-10, 70}, {-38, 70}, {-38, 70}}, color = {0, 0, 127}));
connect(PANELin.T_in, PANELtem.y) annotation(
Line(points = {{82, -6}, {94, -6}, {94, -50}, {42, -50}, {42, -50}}, color = {0, 0, 127}));
connect(QEva.u1, SSHP.QCon_flow) annotation(
Line(points = {{38, -44}, {32, -44}, {32, 20}, {22, 20}, {22, 20}}, color = {0, 0, 127}));
connect(SSHP.P, QEva.u2) annotation(
Line(points = {{22, 10}, {26, 10}, {26, -56}, {38, -56}, {38, -56}}, color = {0, 0, 127}));
connect(QEva.y, mEva.u) annotation(
Line(points = {{62, -30}, {68, -30}, {68, -46}, {-20, -46}, {-20, -70}, {-2, -70}, {-2, -70}}, color = {0, 0, 127}));
connect(mEva.y, PANELin.m_flow_in) annotation(
Line(points = {{22, -70}, {52, -70}, {52, -52}, {88, -52}, {88, -2}, {82, -2}, {82, -2}}, color = {0, 0, 127}));
annotation(
uses(Buildings(version = "5.1.0"), Modelica(version = "3.2.2")));end SSHPTest;
I would really appreciate any kind of hints/help.
Best wishes,
Hi casella
Thank you for your reply and work on the development. I will continue to follow up.
Hi Adrian,
Thanks for your help, I installed as you recommaned OM in the C:\OpenModelica\ and it works well on some example models now,
but there is still some models that I can't run in MSL and Building library(such as MSL/Fluid/Examples/HeatingSystem and Buildings/Examples/Tutorial/Boiler/System2-7).
I read your past reply "most of them should work but some of therm are there as partial components of the bigger examples. Even if you use Dymola you cannot compile those models." But I am not sure why it didn't work because I think they(MSL/Fluid/Examples/HeatingSystem and Buildings/Examples/Tutorial/Boiler/System2-7) are Independent systems.
Thank you again for your help.
Dear all,
I tried to run example models in the modelica standard library and building library with OpenModelica v1.14.0-dev-26550-g915982a816 (64-bit), check of models completed successfully but the simulation didn't execute.
The following error occurred:
In compilation window: 'C:/Program' is not recognized as an internal or external command, operable program or batch file.
In output window: Process failed to start: No such file or directory.
I would really appreciate any kind of hints/help.
Best wishes,
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