Abstract: This paper presents a model predictive control (MPC) strategy for BioGrate boiler, compensating the main disturbances caused by variations in fuel quality such as the moisture content of fuel, and variations in fuel flow. The MPC utilizes models, the fuel moisture soft-sensor to estimate water evaporation, and the fuel flow calculations to estimate the thermal decomposition of dry fuel, to handle these variations, the inherent large time constants, and long time delays of the boiler. The MPC strategy is compared with the method currently used in the BioPower 5 CHP plant. Finally, the results are presented, analyzed and discussed.

Abstract: Data is transferred between two software programs. Electronic data maintained by server software is read with browser software. A document is formed from the electronic data. The data consists of a group of objects. The document is presented on the screen of a data processing device with the browser software. In addition, the electronic data is transferred between the objects of the document read by the browser software and a server software as a background run performed by a script based software language on the browser software.

Abstract: A method, a data processing device, a computer program product and an arrangement for processing electronic data are provided. In the method, electronic data is read by a browser of the data processing device and the browser is identified. Then, classes implementing a virtual browser and appropriate for the identified browser are downloaded into the data processing device. Finally, a virtual object model is formed from the electronic data by the virtual browser, the electronic data is processed by utilizing the virtual browser and the virtual object model, program code contained in the electronic data being written in a manner required by the virtual browser, and both the program code and the browser's presentation of the electronic data being independent of the browser and the data processing device used.