https://repository.utm.md/handle/5014/31434 Fri, 16 Oct 2026 02:31:03 GMT 2026-10-16T02:31:03Z https://repository.utm.md/handle/5014/37270 Quality of pellets produced from agricultural wood residues specific to the Prut River basin MARIAN, Grigore; GELU, Ianus; GUDÎMA, Andrei; NAZAR, Boris; ISTRAT, Bogdan; PAVLENKO, Andrei; BANARI, Alexandru; DARADUDA, Nicolae This paper presents an overview of the prospects for the use of agricultural wood residues, specific to the climatic zone adjacent to the Prut River and the qualitative characteristics of densified solid biofuels in the form of pellets produced from the main types of the agricultural wood biomass, taken from agricultural plantations in the Republic of Moldova and Botosani, Iasi, Vaslui and Galați counties in Romania. The aim of the paper is to establish the energy potential of the main indigenous agricultural wood residues and to analyze the quality of the pellets produced from these residues. The research results showed that the pellets produced from the studied agricultural residues mainly meet ENPlus 3 requirements for most qualitative parameters, except for those produced from blackberry and currant residues. Residues from the prunning of some types of fruit shrubs can be used to produce pellets by creating mixtures of different proportions, and their qualitative characteristics can be significantly improved by thermo-chemical pre-treatment of the raw material. Fri, 01 Jan 2021 00:00:00 GMT https://repository.utm.md/handle/5014/37270 2021-01-01T00:00:00Z https://repository.utm.md/handle/5014/36074 Calitatea biocombustibililor solizi în acord cu politicile de dezvoltare a surselor regenerabile de energie: studiu bibliografic de specialitate PAVLENCO, Andrei Scopul acestui studiu este evidenţierea principalilor parametri calitativi ai reziduurilor agricole pentru energie specifice Republicii Moldova. Problema cercetării se referă la estimarea posibilităţilor de folosire a reziduurilor agricole indigene în calitate de materie primă la producerea biobrichetelor cu caracteristici în acord cu normele internaţionale ENPlus. În acest studiu au fost evaluate reziduuri provenite din tăierea pomilor şi a viţei de vie şi reziduuri de la principalele culturi erbacee (grâu, orz, ovăz, porumb pentru boabe şi floarea soarelui), conform parametrilor următori: conţinutul de umiditate, valoarea calorifică, conţinutul de cenuşă şi factorul unitar de conversie (raportul dintre masa reziduurilor şi masa producţiei de bază a culturii respective). S-a demonstrat că reziduurile agricole arboricole şi cele de viţă-de-vie pot fi folosite în calitate de materie primă la producerea biobrichetelor certificate ENPlus, iar reziduurile erbacee pot fi utilizate doar în amestecuri cu alte tipuri de biomasă vegetală.; The aim of this study is to highlight the main qualitative parameters of agricultural residues specific to the Republic of Moldova. The issue of research refers to the estimate of the possibilities of using indigenous agricultural residues as a raw material for the production of biobriquettes in accordance with ENPlus international standards. In this study, fruit tree and vine pruning residues and residues from the main herbaceous crops (wheat, barley, oat, maize for grain and sunflower) were evaluated for the following parameters: moisture content, calorific value, ash content and unitary conversion factor (ratio between residue mass and base yield mass of the respective crop). It has been demonstrated that arboricultural and vines residues can be used as a raw material for the production of ENPlus certified biobriquettes, and herbaceous residues can be used only in mixtures with other types of vegetable biomass. Mon, 01 Jan 2018 00:00:00 GMT https://repository.utm.md/handle/5014/36074 2018-01-01T00:00:00Z https://repository.utm.md/handle/5014/36046 Bioenergia pentru zonele rurale – efectul socioeconomic și de mediu (studiu bibliografic de specialitate) PAVLENCO, Andrei The article presents the date from the specialized literature relating on the opportunity to develop the production of bio briquettes in the rural areas using local raw materials, especially agricultural residues. The aim of the current research was to identify the environmental impact, rural sustainability and food security generated from the biofuel production from agricultural residues. Based on the analyzed data, have been set the objectives for more in-depth research into ways to improve the quality of bio briquettes that are produced from indigenous raw material, as well as the formulation of the necessary assumptions for experimental research confirmation. Mon, 01 Jan 2018 00:00:00 GMT https://repository.utm.md/handle/5014/36046 2018-01-01T00:00:00Z https://repository.utm.md/handle/5014/35815 Principiile de determinare a indicilor de fezabilitate a sistemelor compuse ERHAN, Fiodor Indicatorii de fezabilitate a sistemelor compuse pot fi determinați în baza comparării indicatorilor calității de funcționare ori prin compararea efectului final al sistemului real cu un sistem identic ideal. Indicatorii de fezabilitate trebuie să oglindească stabilitatea calității de funcționare a sistemului în procesul de îndeplinire a funcțiilor coform cerințelor tehnice desemnate preventiv. Tue, 01 Jan 2008 00:00:00 GMT https://repository.utm.md/handle/5014/35815 2008-01-01T00:00:00Z