Ebsilon Professional Litrature 535p6v

EBSILON PROFESSIONAL INTRODUCTION Ebsilon Professional is an all-in-one solution for power plant engineering. It is widely used for design, evaluation and optimisation of different types power plants and other thermodynamic processes. During the design process, it helps in identifying an optimal cycle and also evaluating various options and alternate configurations. It can be also be used during plant operations to evaluate losses and suggest possible plant improvements. Ebsilon Professional is built from first principles physics and conserves the energy and mass balance of all power plant processes. It can therefore be used for simulating plant conditions at different loads to a high degree of fidelity. Based on Ebsilon professional models, EPOS (Ebsilon Professional and Optimisation System) is used for on-line plant monitoring and optimisation. THE SOFTWARE: The Ebsilon Professional is a mass and energy balance cycle calculation program that is highly integrated with MS Windows and MS Office applications. It is suitable for nearly all, stationary thermodynamic modelling requirements for evaluating thermodynamic cycles or plant schemes. It uses the well-known mathematical kernel of Ebsilon, which can solve the non-linear mass and energy balance equations of the plant. The mathematical kernel of Ebsilon has excellent convergence and stability properties allowing complex problems to be solved quickly. It is also highly friendly and fully compatible with the Microsoft platform. It does not require any special programming skills allowing engineering personnel to use Ebsilon intuitively and with ease. This is why it has proven to be the software of choice for a large number of small and large companies. While originally it was very popular with equipment suppliers, consultants and utilities in German speaking Europe, it has now spread to other parts of Europe such as Netherlands, Poland, Denmark, and also in a number of other countries internationally such as India, China, Korea, etc. Ebsilon is available in German, English and French versions currently. Data analysis and the generation of process models are ed by a powerful graphical interface. All the components are represented both mathematically and graphically, allowing plant models to be built component by component and in one-to-one correspondence with the actual plant. The validation of measure values of the plant allows a reliable and consistent process representation.

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Using Ebsilon, design, projection and calculation of power plant processes will be: • Faster • More detailed • More cost efficient MODELLING FEATURES OF EBSILON: Ebsilon professional comes with a powerful graphic editor, which allows the models to be built using single components, group of components, sub systems or complete systems. It also allows that components or systems can be in open or closed circuit. This makes it possible to simplify certain areas, and focus on those areas that are the interest of the modeller, which then can be modelled in much greater details. Let us have a look at example-1 to get a short glance at Ebsilon professional’s most significant features – Example-1

Fig - 1 Above figure shows a simple cycle built in an Ebsilon graphic editor. This contains the modules that represent the components of the power plant. After defining the appropriate operating and design values (according to specification from manufacturer- Fig 2) for all components, the model is ready for calculations.

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Used For OFF-Design

FIG-2 The results of the calculations are stored as reference values. If the calculations do not run successfully, then the Ebsilon provides an option for error analysis component wise or system wise. It is also possible to compute the behavior and performance of each component under different operating conditions. Ebsilon provides different modes of calculations, viz., Design mode and Off-design mode. Normally, Design mode is used for the construction of new cycles and in this mode the designer defines appropriate values for all components according to specifications from manufacturer. The calculation results of the Design mode are then stored as reference values for the Off-design mode calculations. The Off-design mode is used for a cycle already completed and calculated in the Design mode. It may be used to calculate different variations (different set of input data) of plant operations.

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After successful calculations, the model computes the efficiencies and Heat rates of the system in both design and in different operating conditions (Fig-3).

Shows efficiency of the Unit

FIG-3 The performance of the components, e.g., Heaters, Turbines, etc., can be shown in Q-T or H-S diagram, drawn automatically from the operating behavior of the components in the specified conditions (Fig-4a,b). Also Ebsilon provides a “convergence diagram” for the evaluation of the performance of the unit.

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FIG-4a

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FIG-4b

In addition Ebsilon professional provides another module “Ebsldent” for identification of relations within the models developed. Generally there is a target quantity that depends on certain input quantities. The target quantity may be any quantity that is available in the cycle after the calculations, e.g., a component property such as efficiency of a turbine or the K*A of a heat exchanger. Such identification is useful for two purposes: • •

The improved calculation of a component The determination of quality factors, for single components, for a group of components or the whole plant.

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Ebsilon professional can also able to provide information related to losses to achieve the best efficiency of a Boiler. Profit analysis is also possible using Ebsilon professional. Here are few examples shows the boiler losses and efficiency along with HBD with coal calculations and without coal calculations.

FIG-5a – Over all Boiler Model

FIG- 5b- Boiler Efficiency and Losses

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FIG 6a- HBD with coal calculation

FIG 6b- HBD without coal calculation

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EBSILON AS AN EVALUATION AND ENERGY CONSERVATION TOOL Ebsilon Software is a powerful tool to help the Power Plants identify poor performance of plant components, sub-systems or the plant as a whole. The entire plant is first “mapped” by the Ebsilon Software to establish the consistency of plant data and compare it with the design parameters of the plant. The outcome of this exercise gives a complete mapping of the target plant into Ebsilon allows Ebsilon to simulate various plant conditions. This allows the identification of problems where there are mismatches of the design data with the plant. Through its powerful validation routines, Ebsilon also can pinpoint wrong instrumentation data. The plant personnel provide the data used for the mapping of the Power Plant. The Power Plant is mapped based on data inputs and validates the data input set by a number of trial runs. This approach is interactive since initial power plant data set provided will usually not be consistent due to hidden or known instrumentation errors as well as inaccurate equipment and fuel specifications. This mapping is also required based on the provision of the Energy Conservation Act, which includes thermal power plants also as designated consumers. The objective is to demonstrate more innovative methods to conduct a baseline performance assessment and map the results into software for further analysis and simulation for the benefit of the plant operators. EBSILON COMPONENT AND OTHER LIBRARIES In the Ebsilon, the modelling is done by using a component library, which exists of 95 components as e.g. turbines, heat-exchangers, boiler, pumps, generators, gas-turbines, combustion chambers, tanks, gasifier, FBC, fuel cell, cooling towers dryer, filters, separators, fans, etc. The toolbox is developed in cooperation with the Technical University of Darmstadt and is enlarged by at least 2 – 3 components per year. The cycle is first modelled topologically by using the component toolbox and the inserted components are then parameterised. All components are equipped with sets of default values. The sets are taken from a library, which can be modified and enlarged by the . From this library, both total and parts of cycles can be selected. A gas turbine library is also available. For media properties, different property libraries and tables are available. Fuels (bituminous coal, lignite, gas, oil, hydrogen, biomass etc.) can be used from such a library. Flue gases can be selected with any composition or a selected from default composition. Ebsilon Professional is powerful enough that in one model, several power plants, district heating systems, etc. with full 9

details can be connected by power-lines or steam-lines and solved in a few seconds. The Import and Export of data and results is possible via variety of Excel or ASCII interfaces. It is also possible to integrate other DLL’s in the Ebsilon package. All adjustments as visualization, physical dimensions (or British Units selectable either initially or on the fly. A very powerful and interactive error analysis tool leads the through his EBSILON model to the error source. Besides, Ebsilon sample calculations are available for every component as online documentation.

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