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Research was carried out at the experimental installation defined by the 2 MW furnace pilot from the Politehnica University of Bucharest and ICEMENRG institute who was involved for measurements. The purpose of the experimental study is to confirm that the use of a coal with low sulphur content S

The paper continues the study of reconversion of a 400 kW hot water boiler in a steam generator suitable to valorise the energy content of briquettes and pellets of agricultural biomass. After steam parameters selection (pressure, temperature, mass-flow rate), an overview of main steam machines types (axial, radial, screw, piston engine) is done. Further, a parallel design of most wide-spread ones (Laval, Curtis and radial) were performed, at different rotation speeds, in order to find the best configuration in respect with the flow section dimensions, internal efficiency and power (electrical and thermal) output. The results of the paper could be very useful for the investors in agricultural “waste-toenergy” projects in order to select appropriate technology and equipment.

Romania is in a full process of development in regards to producing energy from renewable sources. Successes have been recorded in the wind and hydro sectors, however, challenges are still to be solved in the field of biofuels. In previous years, research and investments targeting facilities that make use of a larger range of renewable fuels and their respective incineration technologies were carried out. The experience thus gained allows for a redefinition of the range of fuels which can constitute cost-worthy power producing solutions. Defining the renewable fuels of the future is of utmost importance for a country with a significant agricultural potential, but also with a temperate climate. After eliminating some cultures specific to warmer climates and not taking into account the quantity/price ratio, the current paper highlights a synthetic approach (a matrix) to the fuels of the future applicable to the power sector in Romania. At the definition base for the matrix also stands data gained from the experience of the researchers in the respective domain.