Heat Exchanger Library - Release Information


Version 1.3 contains the changes described below.

New features

  • Gas-liquid plate heat exchangers components with plain plate surface, to be used in both counterflow and co-flow.
  • Gas-liquid plate heat exchangers components with Chevron plate surface, to be used in both counterflow and co-flow.
  • Liquid-liquid plate heat exchangers components with plain plate surface, to be used in both counterflow and co-flow.
  • Liquid-liquid plate heat exchangers components with Chevron plate surface, to be used in both counterflow and co-flow.
  • Gas-gas plate heat exchangers components with plain plate surface, to be used in both counterflow and co-flow.
  • Gas-gas plate heat exchangers components with Chevron plate surface, to be used in both counterflow and co-flow.
  • Testbenches for plate heat exchangers: gas-gas, liquid-gas and liquid-liquid.
  • A set of heat transfer and pressure drop correlations for Chevron plate heat exchangers.
  • A new two-phase/air flattube heat exchanger component which contains a receiver after a given pass.

Improvements

  • Improved in library documentation, in particular for the Kandlikar correlation.
  • Improved Modelica compliance.

Library structure changes

Renamed classes

  • HeatExchanger.HeatExchangers.Experiments -> HeatExchanger.HeatExchangers.FlatTube.Experiments

Conversion of user libraries

Automatic conversion of user libraries from version 1.2 is supported using the included conversion script.

Requirements

Heat Exchanger Library 1.3 is based on Modelon Base Library 2.2 and Modelica Standard Library 3.2.1.  

It has been tested with:

  • Dymola 2015 FD01
  • Dymola 2016

New features

  • Added support for moist air and condensation on the ambient side of the heat exchanger
  • Added an optional, more detailed representation of the air side pressure drop and heat transfer. This option is selectable from the heat exchanger paraemter dialog, and is optimized for simulation of stand-aone heat exchangers with high resolution gridded boundary conditions. The original implementation is also available and is recommended for use in heat exchanger stack models.
  • Added the possibility of computing the total internal liquid or working fluid volume and mass. When included in a system model based on the Liquid Cooling Library or Vapor Cycle Library, the total properties will be computed for the whole system including the heat exchanger.

Improvements

  • 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 in library documentation.
  • Improved Modelica compliance.
  • Updated for compatibility with Modelon Base Library 2.1

Bug fixes

  • Fixed an error that caused models with internal discretization orthogonal to the flow direction not to be able to translate in some configurations.

Conversion of user libraries

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

Base library

HXL 1.2 is based on the Modelon Base Library 2.1 and Modelica Standard Library 3.2.1.