Jukka Ylijoki

• VTT Technical Research Centre of Finland

Due to the widespread deployment of non-flexible renewable energy sources, an increasing trend is to use coal-fired boilers as support to the base energy production. High flexibility is usually required, and consequently, it is fundamental to be able to accurately predict and study dynamic behavior of the boilers. This point is particularly crucial...

The publication describes the one-dimensional two-fluid model of the computer program APROS used for the simulation of nuclear and conventional power plants. The work is based on the technical report from 1992. The treatment of the non-condensable gas mass equation has been added. The test results have been updated, so that the results correspond t...

A dynamical model for a 5 kW class solid oxide fuel cell (SOFC) combined heat and power (CHP) test station has been composed using the APROS (R) environment. The model is based on a real test station being constructed and operated at VTT Technical Research Centre of Finland and it comprises the following main components of the real test system: the...

To achieve the full benefits of a dynamic process simulator, it is necessary to provide a link between the simulator and the distributed control system (DCS). The OPC (OLE for Process Control) standard is a means to provide transparent data flow between applications running a Microsoft Windows-based operating system. The OPC standard was created to...

The APROS simulation environemtn contains data base, graphics, and physical models for the simulation of nuclear and conventional power plants and chemical processes. One important feature of the APROS simulation environment is the possibility to make changes in the process in a very flexible manner, even during the simulation. Thus, process models...