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The international conventions regarding the climate change, namely the Kyoto Protocol and the Paris Agreement, include the recommendations for international organisations that are responsible for the supervision over the transportation other than land transport. The recommendations refer to the efforts of these branches of the economy to reduce global CO2 emissions. It has been assessed that the maritime transport is the source of around 800 Mt of CO2 per year emitted to the atmosphere. Given the forecast regardin...

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...

According to the literature [9,15] geothermal energy means a part of the Earth's energy resources accumulated in water, water steam and dry hot rocks. It is classified to a group of renewable resources, virtually inexhaustible due to its transfer from the EarthпїЅs inside by conduction and convection. M. Kaczmarczyk [6] describes geothermal energy as a primary energy originated in the process of the Earth formation and as the energy generated by the radioactive decay. It has been evaluated that the global geotherm...