973 KB44 KB199920252014Katrašnik, TomažKunaver, MatjažSeljak, Tineštevilka:4letnik:60str. 221-231, SI44ISSN:0039-2480COBISSID:13392411URN:URN:NBN:SI:doc-KLRR10DIenZveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikemisijegorivaodpadkiplinske turbinesolvolizautekočinjen lesEmission evaluation of different types of liquefied wood|After initial studies, further research work on the combustion properties of second generation biofuels, obtained through solvolysis in polyhydroxy alcohols is oriented towards different types of liquefied wood that exhibit several favorable properties. In this study, different types were obtained by altering the reactant ratios of the fuels. These were focused on increased wood content and elevated pH value that would increase the techno-economic attractiveness of the fuel. Three different types of fuels were tested in a laboratory scale gas turbine, and evaluated through CO, THC and NOsubx emissions measurements, while varying multiple operating parameters. To achieve sufficient atomization quality, the high viscosity of the fuels was reduced by preheating to 100 °C. To speed up the droplet evaporation process and additionally to resemble conditions present in commercially available systems, high temperatures of primary air were employed by the use of exhaust gas heat regenerator. CO and THC emissions were found to be highly dependent on wood content and turbine inlet temperature, whereas with partial neutralization of the fuel this dependency was less pronounced and only NOx concentrations were influenced by altered elemental composition of the fuel. Results indicate it is possible to maintain successful combustion in microturbines even with fuels that exhibit higher pH value and reduced reactivity and with fuels containing higher amounts of lignocellulosic biomassV želji po nadomeščanju fosilnih goriv je v zadnjem času vedno več pozornosti usmerjene v biogoriva in goriva, proizvedena iz različnih vrst odpadkov. Zaradi svojih fizikalnih in kemičnih lastnosti sta na tem področju izpostavljena predvsem biodizel in etanol, ki ju je mogoče brez obsežnih adaptacij uporabiti v motorjih z notranjim zgorevanjem. Kot tipična predstavnika biogoriv prve generacije ju pesti predvsem njuna konkurenčnost s surovinami, namenjenimi pridelavi hrane. Ena izmed možnosti za izogibanje prehrambnim surovinam je izkoriščanje odpadne lignocelulozne biomase kot surovine za goriva motorjev z notranjim zgorevanjemTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo