Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Krisztina Uzuneanu"'
Autor:
Robert Mădălin Chivu, Jorge Martins, Florin Popescu, Margarida Gonçalves, Krisztina Uzuneanu, Michael Frătița, Francisco P. Brito
Publikováno v:
Energies, Vol 17, Iss 14, p 3528 (2024)
This research evaluates the feasibility of using eucalyptus oil blended with conventional diesel fuel in diesel engines. Eucalyptus globulus is one of the main tree species cultivated for paper pulp in western European countries such as Portugal, and
Externí odkaz:
https://doaj.org/article/e0673fc5d05d45c596439204c0674060
Autor:
Robert Mădălin Chivu, Jorge Martins, Florin Popescu, Krisztina Uzuneanu, Ion V. Ion, Margarida Goncalves, Teodor-Cezar Codău, Elena Onofrei, Francisco P. Brito
Publikováno v:
Energies, Vol 16, Iss 13, p 5150 (2023)
The need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those der
Externí odkaz:
https://doaj.org/article/f0a142a3b300442e93c4600ba766c31a
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 40, Iss 2 (2017)
The purpose of the study is to determine the influence of moisture on thermal conductivity for a range of building materials. A series of building materials and insulation materials have a porous, fibrous or granular structure, in which blanks are fi
Externí odkaz:
https://doaj.org/article/b694b0a5a86d47358c051396f75ee46f
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 35, Iss 1 (2012)
This paper summarizes the results of an experimental study on the gasification of briquettes made from different agricultural residues. There were investigated the effects of operating parameters such as temperature and excess air ratio both with a d
Externí odkaz:
https://doaj.org/article/cf630e52e16344c0aa271386b8f0cb38
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 35, Iss 1 (2012)
The performance of any solar energy system depends very much on the availability of solar radiation and the orientation of solar collectors. Solar collectors need to be inclined at the optimum angle to maximize the receiving energy. In this work, we
Externí odkaz:
https://doaj.org/article/2c5686ccca9b48d4aa97775d5877765c
Autor:
Brito, Robert Mădălin Chivu, Jorge Martins, Florin Popescu, Krisztina Uzuneanu, Ion V. Ion, Margarida Goncalves, Teodor-Cezar Codău, Elena Onofrei, Francisco P.
Publikováno v:
Energies; Volume 16; Issue 13; Pages: 5150
The need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those der
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::15ebe098b7aa81fecc24fd78a4bb43b3
Publikováno v:
Thermal Science, Vol 20, Iss suppl. 5, Pp 1227-1235 (2016)
The experimental research aims at the analysis of the thermal performance of a gas-liquid heat exchanger in a pilot plant. Results of the conducted experiment with a finned tubes thermosyphon heat exchanger using natural gas are presented. The instal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e39bf5b259e1822b74032b24e65a5f59
Autor:
Burciu Burciu, Krisztina Uzuneanu
Publikováno v:
Applied Mechanics and Materials. 659:274-279
The drastic decrease in the world energy resources along with the statement that the modern culture and civilization simply cannot exist without energy and therefore, due to its very existence, it is a big energy consumer, has become an axiom. The in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1c6017d5b49c4d782869f9cf42fc0fa
https://doi.org/10.4028/www.scientific.net/amm.659.274
https://doi.org/10.4028/www.scientific.net/amm.659.274
An assessment of combustion products of spark ignition engines supplied by ethanol - gasoline blends
Autor:
E Golgotiu, Krisztina Uzuneanu
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 147:012125
The causes of environmental pollution by internal combustion engines arise from the use of fuels containing bounded carbon, from the fact that combustion takes place on a cyclic basis and at high temperature. The first and the last causes are directl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5272b63d9f3375d1acbedcfb082e6bfb
https://doi.org/10.1088/1757-899x/147/1/012125
https://doi.org/10.1088/1757-899x/147/1/012125
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
When the exhaust valve of a conventional spark ignition engine opens at the end of the expansion stroke, a large quantity of high pressure exhaust gas is freed to the atmosphere, without using its availability. An engine that could use this lost ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b701434b29c4cd149543d18dacfbdca
https://doi.org/10.4271/2004-01-0617
https://doi.org/10.4271/2004-01-0617