School of Systems and Technology (SST)

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https://escholar.umt.edu.pk/handle/123456789/154
One of the best in Pakistan, consisting Moreover about two dozen faculty members have doctoral degrees.

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Browsing School of Systems and Technology (SST) by Author "Abdul Aziz Bhatti"

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    Characterization of biodiesel samples produced from fresh and waste vegetable oils to evaluate their feasibility for power generation
    (2013) Mehwish Inam; Ayesha Mohy-Ud-Din; Abdul Aziz Bhatti; Mashood Nasir
    The purpose of this paper is to design a system in which the biodiesel prepared from fresh and waste vegetable oil can be converted into useful power output. It is intended that this biodiesel produced may ultimately be a fuel source for the power generation from the generators. The optimal conditions of temperatures and concentration have also been discussed and the criteria to select these parameters have been evaluated.
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    Comparative analysis on the efficiency and engine properties by using biodiesel and fossil diesel
    (2013) Ayesha Mohy-Ud-Din; Mehwish Inam; Abdul Aziz Bhatti; Mashood Nasir
    The increase in the demand and prices of petroleum products as well as the environmental concerns resulting from the burning of fossil fuels in electricity production has resulted in focusing on the use of environmental friendly renewable alternative energy resources, like solar, hydro, tidal, wind, geothermal and biomass energy. There has been plenty of research done so far on engine performance and biodiesel production. Biodiesel was produced from fresh oil (BFO) and waste vegetable oil (BWO) on using biofuels for electricity generation. The engine performance tests were conducted with petroleum diesel and biodiesel samples at different loads and variable speeds. On comparing the electrical efficiency of generator and brake specific fuel consumption(BSFC) values, it was observed that less fuel is required for same power output when BFO (0.19kg/kWh) and BWO (0.18kg/kWh) were used in place of petroleum diesel. Moreover, an increase in BSFC values of BFO and BWO as compare to petroleum diesel at different speeds leads to the same interpretation. Higher efficiency and lower BSFC values of BFO (Efficiency: 43.25%; BSFC: 0.19 kg/kWhr) and BWO (Efficiency:41.34%;BSFC:0.2kg/kWh) due to complete combustion and reduction in calorific value of the fuel. In case of BWO, the operational efficiency (41.34%) was found less than the diesel-fueled condition.
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    Impact of extended starobinsky model on evolution of anisotropic, vorticity-free axially symmetric sources
    (Journal of Cosmology and Astroparticle Physics, 2015) Ifra Noureen; Abdul Aziz Bhatti; M. Zubair
    We study the implications of Rn extension of Starobinsky model on dynamical instability of Vorticity-free axially symmetric gravitating body. The matter distribution is considered to be anisotropic for which modified field equations are formed in context of f(R) gravity. In order to achieve the collapse equation, we make use of the dynamical equations, extracted from linearly perturbed contracted Bianchi identities. The collapse equation carries adiabatic index 􀀀 in terms of usual and dark source components, defining the range of stability/insatbility in Newtonian (N) and post-Newtonian (pN) eras. It is found that supersymmetric supergravity f(R) model represents the more practical substitute of higher order curvature corrections.