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EINSTEIN Changelog

What's new in EINSTEIN 2.4

Jun 20, 2019
  • The version 2.4.02, developed by energyXperts.NET with own resources and cofinanced by the European H2020 project I-THERM (itherm-project.eu, Grant Agreement No. 680599), and released in December 2016 is the free equivalent to the version 2.4plus. With respect to the last release Version 2.2. the following major changes are introduced:
  • New modules for heat to power conversion equipment (steam turbines, ORC turbines, trilateral flash cycle, …)
  • New editor for process time schedules
  • Improved graphical editor (block scheme of the system)
  • Robustness: Additional testing, lots of bug-fixes and stability improvement.
  • Catalan translation of EINSTEIN Audit Report master document
  • Pinch analysis and heat exchanger network design:
  • Improved data entry for configuration of heat exchanger networks
  • Improved algorithm for automatic HX-network design
  • Robustness:Improved robustness of code and reliability of results by additional systematic testing procedure (large set of standard test cases).
  • Substitution of MySQL data base server by SQLite (more easy installation and less configuration problems).

New in EINSTEIN 2.2 Beta 1 (May 28, 2012)

  • New features:
  • Consistency and completeness checking:
  • highlighting of paramaters involved in conflicts, missing data and data calculated by EINSTEIN by colours in GUI;
  • improvement of error tracking.
  • local consistency checking after saving of data for each data block (equipment, processes, etc.)
  • Process and building optimisation: possibility for changing processes with detailed time schedules and building heating and cooling demands in alternative proposals
  • Heat recovery
  • heat exchanger calculations (mode ActualHXNet_v2): possibility of serial connections in heat exchangers, improvement of output
  • possibility of use of waste heat in heat distribution (pipes)
  • heat exchanger network auto-design: compatibility with mode ActualHXNet_v2
  • list of streams as additional data output
  • Graphics for quick comparison of energy and economic performance of alternatives
  • Complete version of technical manual
  • Speed-up of iterative calculations in simulation engine (limitation of simulations in iterative cycles to those components with variation in input parameters)
  • Improvement in existing features:
  • completing of equipment data entry: possibility of entering all relevant data for heat pumps, chillers and CHP equipment via questionnaire, without need for import from equipment data bases
  • restructuring of GUI: including pinch analysis in energy statistics of present state
  • better support for british units (still in testing phase)
  • and a long list of bug fixes and stability improvements

New in EINSTEIN 2.1 (Mar 7, 2012)

  • new features:
  • introduction of thermal chillers as an equipment type
  • a separate treatment of air handling in buildings
  • Bulgarian as a new language for the GUI and the report generation
  • improvements:
  • differentiation between indoor temperature and heating system temperature
  • differentiation between process temperature and minimum supply temperature to processes in general
  • a flow chart input for process and pipe parameters for an easier understanding of the meaning of the parameters.
  • the possibility to connect heat exchangers as a low temperature heat source to heat pumps.
  • improved consistency checks of process temperatures
  • a speed up of the heat pump simulation code
  • updates of the French translation
  • updated technical documentation
  • several improvements to the GUI
  • fixes for several crash bugs in the simulation code
  • and a lot of the usual small bug fixes

New in EINSTEIN 2.0 Beta 7 (Apr 21, 2011)

  • This minor release contains mainly translation fixes and fixes a few crash bugs. An update of the bundles libraries was necessary to allow translation for all dialogs.
  • Known problems are:
  • Non ASCII characters in the names of process inflow or outflow streams or buildings lead to crashes. Please avoid characters like ößñçč etc. for these names.
  • The heat recovery dialog needs a reselection of the heat exchanger after the OK button was clicked. Otherwise some data that is displayed may not be current.
  • Switching of the interface language on the fly only works for parts of the interface. A restart of Einstein is necessary to get the full translation after a switch of the language.

New in EINSTEIN 2.0 Beta 6 (Apr 21, 2011)

  • This minor release contains a stop gap fix for a bug in the bundled version of numpy that lead to hangs of Einstein.
  • Known problems are:
  • Non ASCII characters in the names of process inflow or outflow streams or buildings lead to crashes. Please avoid characters like ößñçč etc. for these names
  • missing translations in some dialogs

New in EINSTEIN 2.0 Beta 5 (Apr 21, 2011)

  • This minor release contains fixes for several bugs among them:
  • missing translations in several dialogs
  • vanishing lists of media for distribution pipes
  • a crash bug in the consistency check
  • Known problems are:
  • Non ASCII characters in the names of process inflow or outflow streams or buildings lead to crashes. Please avoid characters like ößñçč etc. for these names.
  • Switching of the interface language on the fly only works for parts of the interface. A restart of Einstein is necessary to get the full translation after a switch of the language.

New in EINSTEIN 2.0 Beta 4 (Apr 21, 2011)

  • This minor release contains several bug fixes in the GUI and the simulation code compared to 2.0beta3.

New in EINSTEIN 2.0 Beta 3 (Apr 21, 2011)

  • This minor release contains several bug fixes in the GUI and the simulation code compared to 2.0beta2.

New in EINSTEIN 2.0 Beta 2 (Apr 21, 2011)

  • This minor release contains several bug fixes compared to 2.0beta1.
  • a working default configuration for the database connection
  • several GUI bugs

New in EINSTEIN 2.0 Beta 1 (Apr 21, 2011)

  • This major release contains several new fundamental features. This release is an intermediate result of ongoing work in the Framework of the projects IEE-EINSTEIN-II and EINSTEIN in Austria.
  • Since Version 1.2 the following major features have been introduced:
  • the integration of buildings as entities with energy demands
  • the possibility to model processes with multiple inflowing and outflowing media
  • an new, detailed heat recovery model that is implemented in python replacing the old c# based “MS windows only” solution
  • And the following improvements were made: * a finer grained simulation of the covering of energy demands that takes the user defined connections between energy sources and sinks into account * higher stability by fixing GUI bugs that led to freezes of the whole application * and a lot of the usual small bug fixes

New in EINSTEIN 1.2 (Apr 21, 2011)

  • The 1.2 release of EINSTEIN is an intermediate result of ongoing work in the Framework of the projects IEE-EINSTEIN-II and EINSTEIN in Austria.
  • Since Version 1.1 the following major changes have been introduced:
  • the possibility to model complex time schedules in processes
  • an improved editor for EINSTEIN data bases
  • better plots in the graphical interface by integration of matplotlib
  • a graphical installer for MS-Windows XP, Vista and 7
  • The release comes in three variants:
  • EINSTEIN_1_2.exe
  • a bundle installer for MS-Windows XP that contains not only EINSTEIN but the MySQL server, a Python environment and all dependencies in one installer.
  • EINSTEIN_1_2-Installer_IF_YOU_ALREADY_HAVE_DOT_NET_FRAMEWORK_INSTALLED.exe
  • is a also a bundle installer, but it omits the .NET Framework, which is part of MS-Windows Vista and 7 and often already added on XP installations as dependency of an other program.
  • EINSTEIN_1_2_without_the_dependencies.zip
  • is only EINSTEIN. If you’re comfortable with setting up the data base and providing the necessary Python environment by yourself, this variant offers the smallest download size. It is also the most sensible choice for users on a different computing platform than MS-Windows.

New in EINSTEIN 1.1 (Apr 21, 2011)

  • EINSTEIN Version 1.1 is the final version of EINSTEIN within the European project “EINSTEIN”.
  • This version has been used and tested in 90 energy audits in 6 European countries from October 2008 to July 2009.
  • With respect to Version 1.0 a significant increase of stability and bug-fixing has been carried out.

New in EINSTEIN 1.0 (Apr 21, 2011)

  • EINSTEIN Version 1.0 has been released in October 2008 as first public version of EINSTEIN, mainly for its use within the training courses and the energy audits realized within the EINSTEIN project, although we are happy if also people from outside the EINSTEIN consortium start using and testing this software.
  • The present version of EINSTEIN is a version that is still under development within the EINSTEIN project and, therefore, is NOT yet a fully tested and reliable version.
  • Please check all the outcomes and calculations carried out by the tool before delivering results obtained with EINSTEIN to your customers.