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Circular economy, i.e. a closed-loop economy, is an idea in which the value of products and materials is retained as long as possible. A concept that minimizes the environmental impact of the products created, through such choice of components and design that will allow them to be reused. Speaking of circular economy, it is impossible not to mention the role of alternative fuels. According to the EN-15359: 2005 standard - Solid recovered fuels. Specification and classes, alternative fuels are flammable wastes, def...

The article presents the results of experimental research carried out on a real object and analysis of the effect of preparing oil-related waste with various physical and chemical properties for combustion in a marine auxiliary boiler, on selected components of exhaust gases, such as carbon oxide (CO), carbon dioxide (CO2) and nitrogen oxides (NOx) arising as a result of their burning. Oil-related waste comes from operating marine power plants; they are characterised by diverse compositions, heterogeneous structur...

The energy recuperation systems are being increasingly used in modern non-hybrid cars. It allows to recover part of the energy without mounting an additional electric engines and a set of batteries with high capacity in the vehicle. Recuperation of energy, however, involves a number of limitations resulting from: traffic conditions, vehicle construction parameters, electrical energy demand in the car and from the construction of the energy recovery system. In this article presented the results of road tests in a r...