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Mohammad Nadeem Khan

Mohammad Nadeem Khan
Majmaah University Majmaah, KSA · Mechanical

Ph.D.

About

33
Publications
12,651
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373
Citations
Introduction
Skills and Expertise

Publications

Publications (33)
Article
Full-text available
In this work optimization of the parabolic trough (PT) based concentrated solar power (CSP) system is analyzed for solar energy export from Saudi Arabia to European and Asian countries based on their peak load hours. Initially, Al-Ahsa, in east, and Tabuk, in the west, are compared for a PT based CSP plant for electrical energy generation as these...
Article
Full-text available
The present study is a thermodynamic analysis of a Regenerative Air-Bottoming combined (RABC) cycle /Steam bottoming combined (RABC) cycle operated by the exhaust gases the topping gas turbine cycle. The fractional mass of exhaust gases passes through the first heat exchanger where it exchanges heat with the compressed air from the air compressor o...
Article
Full-text available
Novel correlations for thermophysical properties of base fluid (micropolar fluid) and hybrid nanostructures are used to analyze the impact of the inclusion of copper oxide and titanium dioxide thermal enhancement in the polymer with microstructures. The polymers are assumed to be characterized by micropolar rheological equations. The models from go...
Article
Developing countries are facing electrical energy shortage problems. These nations are adopting load shedding to protect their national grids from instabilities. In this research, load shedding is analyzed where customers opt for the use of uninterrupted power supplies (UPS) and store energy in batteries. It is found that Pakistan has wasted 7117 G...
Article
Full-text available
Solar energy is an auspicious renewal energy source because of its abundant availability and its flexibility to be converted into heat or into electricity. Concentrated solar power technologies are promising units for producing electricity in large scale applications and parabolic trough solar collector is the most matured technology for these plan...
Article
Full-text available
Solar energy is an auspicious renewal energy source because of its abundant availability and its flexibility to be converted into heat or into electricity. Concentrated solar power technologies are promising units for producing electricity in large scale applications and parabolic trough solar collector is the most matured technology for these plan...
Article
The current paper presents a thermodynamic analysis of an air-bottoming cycle (ABC) operated by the exhaust gasses of a regenerative gas turbine cycle. The partial exhaust heat of a topping gas turbine cycle is utilized to heat the compressed air of the ABC by passing it through a heat exchanger (H.E.2), whereas remaining heat is used to heat the c...
Article
The present investigation is the comparative energy and exergy analysis of a proposed gas turbine (PGT) cycle with a simple gas turbine (SGT) cycle while maintaining the same mass flow rate of fuel in both cycles. In the PGT cycle, a bypass valve (BVP) connects the topping regenerative gas turbine cycle with the air bottoming cycle. It is found tha...
Article
Full-text available
The present study is a comparative energy and exergy analysis of a Proposed Gas Turbine Cycle (PGTC) with a simple gas turbine cycle (SGTC), maintaining the same rate of fuel supply in both cycles. In the PGTC, the air bottoming cycle is operated by exhaust gases from the topping gas turbine cycle by exchanging heat in the Heat Exchangers by contro...
Conference Paper
Full-text available
Environmentally friendly and effective power systems have been receiving increased investigation due to the aim of addressing global warming, energy expansion, and economic growth. Gas turbine cycles are perceived as a useful technology that has advanced power capacity. In this research, a gas turbine cycle has been proposed and developed from a si...
Article
This work focused on slip flow over a non-Newtonian nanofluid fluid flow past a stretching sheet with particles–liquid suspension. The convective boundary condition is taken into account. Similarity transformations are utilized to reduce the nonlinear partial differential equations into a set of nonlinear ordinary differential equations. Runge–Kutt...
Article
Aerodynamic drag in a bicycle can originate through the rotation of wheels, and the addition of cladding on the wheels has a pronounced impact on the same. In the present work, the effect of cladding on the wheels of a bicycle is studied in terms of the percentage cladding in order to predict the aerodynamic drag using a validated CFD model. SolidW...
Article
Entropy generation in a fully developed couple stress fluid flow through an inclined channel is the focus of the present article. The steady flow of the non-Newtonian fluid via the inclined channel is assumed to be heated isothermally at the boundaries. The formulation of both the fluid flow and heat are based on hydrodynamics and thermodynamics la...
Article
In order to achieve higher performance of combined cycle power plant and reducing greenhouse gas emission, recently different technical approaches have been used based on the choice of higher efficiency of pure mechanical components nonetheless these solution remain very expensive. Though, including original combinations of two or more systems are...
Article
In this study, steady forced convection of water-based nanofluids past an elliptical cylinder is investigated numerically. To enhance heat transfer, copper (Cu) and (Al 2 O 3) nanoparticles were included in the water. The governing equations are converted into a system of non-similar differential equations by using suitable transformations. These t...
Article
In this study, gas and steam bottoming cycles, driven by the exhaust gas of Gas turbine cycle, are analyzed thermodynamically. The waste heat of the Gas turbine topping cycle (GT) exhaust gas is used partially to heat the air in the air bottoming cycle and partially to generate steam by passing it through HRSG in the steam bottoming cycle. The topp...
Article
The purpose of the present study is to investigate the effect of connecting bypass valve between topping and bottoming cycles in a combined cycle system consisting of a regenerative topping gas turbine and bottoming air turbine cycles, the system explored using first and second laws of thermodynamics. The bypass valve placed between two heat exchan...
Article
A great amount of energy gets lost through the exhaust of simple, reheat and inter-cooling cycle. Sometimes, this energy is enough to run another cycle or can be used to heat the compressed air from the compressor to the combustion chamber which leads to an increase in the overall efficiency of the plant. Combined cycle is an alternative to utilize...
Article
Full-text available
In this study, energy and exergy analyses for four configurations, simple gas turbine, steam bottoming cycle with heat recovery steam generator, heat exchanger and secondary bottoming cycle, are performed. The waste heat from the turbine exhaust is utilized in order to optimize the efficiency and output of a simple gas turbine cycle. The combined c...
Article
Heat dissipation in high performance electronic components becomes a significant issue in efficiency promotion and stable operation. Microchannel Heat Exchanger plays the major role for heat dissipation from such high heat generating electronic components. In this connection an experimental investigation was conducted to explore the validity of cla...
Article
Full-text available
Heat dissipation in electronic components becomes an important issue in efficiency promotion and stable operation. Microchannel heat exchanger plays the major role for heat dissipation from such high heat generating electronic components. In this connection an experimental investigation was conducted to explore the validity of classical correlation...
Article
Full-text available
Microchannels provide very high heat transfer coefficients because of their small hydraulic diameters. This paper outlines the alternative approach for predicting the average Nusselt Number under the condition of Fully Developed flow in circular Microchannels. The results obtained from this work are presented in the form ofgeneralized equations for...
Article
Full-text available
The performance of an air-standard Otto cycle with variation of cycle peak temperature and variable specific heats of working fluid is analyzed. The relations between the power output and the compression ratio, between the thermal efficiency and the compression ratio, as well as the optimal relation between power output and the efficiency of the cy...
Article
Full-text available
Air Bottoming Cycle (ABC) can replace the heat recovery steam generator and the steam turbine of the conventionalcombined cycle plant. The exhaust energy of the topping gas turbine of existing combine cycle is sent to gas-air heat exchange, which heats the air in the secondary gas turbine cycle. In 1980’s the ABC was proposed as an alternative for...
Article
Laparoscopic cholecystectomy has become the gold standard for treatment of symptomatic gall stone disease. However, its place remains controversial in the management of acute cholecystitis due to a high reported incidence of bile leaks and conversion rate. Tertiary referral centres have reported good results. We present a series of cases after the...
Article
While most surgeons make an effort to avoid needlestick injury, some can pay little attention to reduce the potential route of infection occurring when body fluids splash into the eye. It has been shown that transmission of HIV, hepatitis B or C can occur across any mucous membrane. This study aims to quantify how frequently body fluids splash the...
Article
To determine the impact of obtaining routine peritoneal fluid cultures during appendicectomy, on the treatment and the clinical outcomes. The case notes of 137 consecutive patients having appendicectomy, selected from the microbiology database over a period of 1 year were reviewed. The microorganisms in peritoneal cultures, selection of antibiotics...
Article
The gas turbine engine has low capital cost compared with the steam power plants. It has environmental advantage and short construction lead-time. One of the technologies adopted now a day for improvement in the utilization of energy is combined cycles power plant. The Air Bottoming Cycle (ABC) can replace the heat recovery steam generator and the...

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