Liquid Cooling Library - Release Information

Improvements

  • Improved compliance to the Modelica language specification 3.3 rev 1.

Fixed bugs

  • Fixed an issue in the pump model that would generate translation errors for certain parameterization options.

Conversion of user libraries

User models based on Liquid Cooling Library 1.4 does not need any conversions.

Requirements

Liquid Cooling Library 1.4.1 is based on the Modelon Base Library 2.3 and Modelica Standard Library 3.2.1. It has been tested with:

  • Dymola 2016 FD01
  • Dymola 2016

New features

  • Introduced the possibility to track trace components that are transported in the liquid.

Improvements

  • Improved Modelica compliance.

Fixed bugs

  • Fixed an error in the thermostatic valve models. The positiveFlow parameter was not propagated to the internal volume component.

Conversion of user libraries

Automatic conversion from Liquid Cooling Library 1.3 is supported using the supplied conversion script.

Base Library

Liquid Cooling Library 1.4 is based on the Modelon Base Library 2.2 and Modelica Standard Library 3.2.1.

New features

  • New component models with geometry based pressure drop correlations: Conical expansion and contraction of pipes.
  • Added heat exchanger stack templates with 7 and 8 included heat exchangers.

Improvements

  • The simplified heat exchanger components based on efficiency (table based and eps-NTU models) have been improved in that the maximum transferable heat is now correctly computed from the enthalpy difference and flow rates of both sides. Previously this assumed uniform specific heat capacity which in rare cases could result in non-physical solutions.
  • All user calibration factors for heat transfer and pressure drop has been converted from parameters to inputs. Users may still assign them with fixed values in the parameter dialog, but can now also use variable expressions to define calibration factors.
  • Improved flexibility of discretized pipe models. The component can now be configured to expose a flow or control volume behavior at the component boundaries.
  • Table based heat exchangers can now be configured to use table data from file directly from the parameter dialog.
  • Table based heat exchangers now use linear interpolation by deafult instead of Akima interpolation.
  • The aggregate volume base classes have been moved to the Modelon Base Library to allow computation of total liquid volume when the system includes components from other libraries.
  • Improved Modelica compliance.
  • Updated for compatibility with Modelon Base Library 2.1

Fixed bugs

  • Fixed an error in the pump model. Check valve behavior would not work although enabled when used together with enabled mass flow dynamics.

Conversion of user libraries

Automatic conversion of user libraries is supported using the included conversion script.

Base Library

Liquid Cooling Library 1.3 is based on the Modelon Base Library 2.1 and Modelica Standard Library 3.2.1.