Ara
Toplam kayıt 182, listelenen: 1-10
Exergo-sustainability indicators of a turboprop aircraft for the phases of a flight
(Pergamon-Elsevier Science Ltd, 2013)
One of the key challenges for sustainable aviation is to reduce global and local environmental impacts. the scope of this study is analysed and discussed in detail for better understanding of sustainability performances ...
Influence of Ge content and annealing conditions on the PL properties of nc-Si1-xGex embedded in SiO2 matrix in weak quantum confined regime
(Elsevier Science Bv, 2014)
Fabrication of Si (nc-Si), Ge (nc-Ge), and Si1-xGex (nc-Si1-xGex) nanocrystals embedded in SiO2 matrix is achieved by thermal annealing of magnetron-sputtered thin films. Effects of annealing conditions, namely duration ...
Effects of ceramic based pastes on electrochemical performance of solid oxide fuel cells
(Elsevier Sci Ltd, 2014)
Various commercially available anode and cathode materials are investigated as the anode and cathode contact paste, respectively, for solid oxide fuel cells. in order to obtain a printable paste, chosen materials are mixed ...
The combined effects of filling ratio and inclination angle on thermal performance of a closed loop pulsating heat pipe
(Springer, 2021)
In the present study, a series of experiments are conducted to investigate the thermal performance of a copper made pulsating heat pipe consisting of uniform flow passages with the cross section of 2 mm x 2 mm. Test ...
Exergoenvironmental and exergoeconomic analyses of a vertical type ground source heat pump integrated wall cooling system
(Pergamon-Elsevier Science Ltd, 2016)
In this study, exergoenvironmental, and exergoeconomic analyses of wall cooling systems fed by a vertical type of ground source heat pump integrated wall cooling system for cooling were examined experimentally and theoretically ...
A parametric study on exergetic sustainability aspects of high-pressure hydrogen gas compression
(Pergamon-Elsevier Science Ltd, 2016)
This paper presents a parametric study on exergetic sustainability aspects of high-pressure-hydrogen gas compression process in terms of exergy. in this regard, a single stage, two-stage, three-stage and four-stage-hydrogen ...
Numerical study on entropy generation in L-shaped curved channels
(Inderscience Enterprises Ltd, 2016)
A numerical study is performed on entropy generation in L-shaped curved channel for constant wall temperature boundary condition and fully developed laminar flow. An elliptic Fortran program based on SIMPLE algorithm is ...
Temperature-tuned band gap energy and oscillator parameters of GaS0.5Se0.5 single crystals
(Elsevier Gmbh, Urban & Fischer Verlag, 2016)
Temperature-dependent transmission and room temperature reflection measurements were carried out on GaS0.5Se0.5 single crystal in the wavelength range of 380-1000 nm to investigate its optical parameters. the analysis of ...
Investigation of the cutting forces and surface roughness in milling carbon fiber reinforced polymer composite material
(Inst Za Kovinske Materiale I in Tehnologie, 2016)
In this study, milling of a carbon-fiber-reinforced polymer composite material (CFRP) was investigated experimentally using various carbide end mills. the input parameters included the spindle speed, feed rate and cutting ...
Effects of contact pressure and sliding speed on the unlubricated friction and wear properties of Zn-15Al-3Cu-1Si alloy
(Taylor & Francis Inc, 2016)
The unlubricated friction and wear properties of Zn-15Al-3Cu-1Si alloy were studied over a range of contact pressure (1-5 MPa) and sliding speed (0.5-2.5 ms(-1)) for a sliding distance of 2,500m using a block-on-disc type ...