Enssim is the name of the software package developed by Enssim software for the flowsheeting of thermodynamic systems. The package is the product of 30 years of software development using Turbo Pascal and Delphi as the programming languages. The phrase "thermodynamic systems" must be taken in a broad sense: not only power and heat systems are comprised but also chemical process units that might serve energetic puposes.
Systems that have been analysed using Enssim include:
- Conventional gas fired units including Combined Cycle Units;
- Power station firing blast furnace gases and other steel mill gases;
- Coal fired units, both pulverised coal units and integrated gasification Combined Cycle Units (IGCC);
- Biomass fired units;
- Petrochemical utilities (syngas-, SNG- and hydrogen production);
- Cryogenic systems.
The type of flowsheet calculation carried out using Enssim are:
- conceptual designing;
- off-design analysis of of energetic systems (part-load and other steady state simulations);
- occasionally dynamic simulations.
Enssim differs considerably from the usual flowsheeting packages. The main difference is that Enssim is not a stand-alone application but rather a large thermodynamic tool kit running under the Delphi programming environment.
Enssim is intended for:
- Engineering and consulting companies active in the field of conceptual and basic design of energy systems;
- Software houses that develop solutions for which thermodynamic functionality is required;
- Colleges of Advanced Technology and Technical Universities where Enssim could be used as a teaching tool.
Below you will find a sample flowsheet of a system that has been analysed using Enssim. It comprises the gasification part of a complex power station. The entire power station consisting of 7 sheets of higher or similar complexity has been analysed using Enssim only.