Example: Acceptance test of a combined-cycle power plant

Another example is given in VDI 2048, Sheet 3. It is a data evaluation in the context of a guarantee certification for a combined-cycle power plant. The Figure shows the respective Ebsilon model.

Here, too, matching results can only be expected if the validation is carried out based on the same auxiliary conditions and material data. In contrast to Sheet 2, in Sheet 3 also material data of gases are relevant besides the material data of water/steam. Via the manual input of equations, the auxiliary conditions can be influenced in Ebsilon, as shown in detail using the example of Sheet 2. The material data libraries in Ebsilon, however, are not the same as those used in VDI 2048. This leads to minor deviations, for the properties of natural gas in particular, that are also reflected in the final results.