Читать книгу Introduction to the simulation of power plants for EBSILON®Professional Version 15 - Steffen Swat - Страница 1

EBSILON®Professional is a powerful engineering system developed for the simulation of thermodynamic cycle processes.

It is distributed by STEAG Energy Services GmbH (http://www.steag-systemtechnologies.com). This manual has been created for version 15. When used with other versions (older or newer), there may be differences in the operation or in the standard parameters of the components used.

EBSILON®Professional is suitable as a tool for plant planning, design and optimization of power plants. Combined heat and power plants, combined cycle power plants, combined cycle power plants, combined heat and power plants, etc. can be calculated with the help of the basic program.

In the last years (software versions) the renewable energies have been integrated step by step, so that now also wind energy plants and solar plants can be calculated.

With EBSILON®Professional two main tasks can be handled:

 Balancing of the overall process

 Design of individual components.

The task of process balancing is to design a functioning overall process and to balance it with regard to the most important process parameters. Essential is the interaction of a large number of components. These have to be designed in detail in such a way that the dimension of a component does not necessarily have to be known from the outset (e.g. blade shape, size of the heat exchanger surface, etc.) Furthermore, the components should be presented as simplified models. It is also necessary to be able to represent full-load and part-load operation.

When designing the individual component, it is important to define the dimensions in more detail. Details, which are important for the design of a component, should be made clear. These are thermodynamic properties and the dimensions of a component. Therefore it is necessary to apply the highest possible level of detail in the modeling (use of FEM or CFD methods).

Power generation plants often deviate from nominal operating conditions and operate within 50% to 100% of nominal load, and their performance parameters change. The EBSILON software has two calculation modes:

 Design mode (Design) according to the nominal load and

 Partial load mode (Off design) in operation below the nominal load.

The cycle diagrams used in the two calculation modes are identical. The design calculation determines the nominal parameters of the component.

For each component a characteristic power curve can be generated according to the real operating data. This is used to predict the change in power parameters of each component when operating conditions change. These power characteristics are used to calculate the partial load.