W pracy przedstawiono możliwości zwiększania mocy turbogeneratorów, wskazując jednocześnie na ograniczenia konstrukcyjne tych maszyn. Zwiększanie mocy turbogeneratorów może być realizowane przez zwiększanie parametrów konstrukcyjnych i eksploatacyjnych. Te pierwsze są ograniczone kryteriami mechanicznymi. Natomiast zwiększanie parametrów fizycznych i eksploatacyjnych jest uwarunkowane systemami chłodzenia maszyny i wartościami granicznymi parametrów materiałowych.
EN
In the paper the possibilities of increasing the power of turbo-generators taking in to account their constructional limitations is presented. Increasing of power of turbo-generators could be done by increasing the constructional and operational parameters. The first ones are limited by mechanical criteria. However increasing the physical and exploitation parameters is contingent upon machine’s cooling system and border values of material parameters.
Substitution of fossil fuels with alternative energy carriers has become necessary due to climate change and fossil fuel shortages. Fermentation as a way of producing biohydrogen, an attractive and environmentally friendly future energy carrier, has captured received increasing attention in recent years because of its high H2 production rate and a variety of readily available waste substrates used in the process. This paper discusses the state-of-the-art of fermentative biohydrogen production, factors affecting this process, as well as various bioreactor configurations and performance parameters, including H2 yield and H2 production rate.