Papers by Abdul Ghafoor Memon
Mehran University Research Journal of Engineering and Technology, 2016
In this paper, thermodynamic analysis of 210 MW dual-fire, subcritical, reheat steam power plant,... more In this paper, thermodynamic analysis of 210 MW dual-fire, subcritical, reheat steam power plant, situated near Jamshoro, Pakistan has been performed. Firstly, the plant is modeled by EES (Engineering Equation Solver) software. Moreover; a parametric study is performed to assess the impacts of various operating parameters on the performance. The net power output, energy efficiency and exergy efficiency are considered as performance parameters of the plant whereas, condenser pressure, main steam pressure and main steam temperature are nominated as operating parameters. According to the results, the net power output, energy efficiency and exergy efficiency are determined as 186.5 MW, 31.37% and 30.41% respectively, under design operating conditions. The condenser contributed a major share in the total energy loss i.e. 280 MW (68.7%) followed by boiler with 89 MW (21.8%). The major exergy destructing area is found in the boiler with 350 MW (82.11%) of the total exergy destruction follo...
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Mehran University Research Journal of Engineering and Technology, 2017
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Mehran University Research Journal of Engineering and Technology, 2017
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Mehran University Research Journal of Engineering and Technology, 2017
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July 2016, 2016
In this paper, exergy analysis of a 210 MW SPP (Steam Power Plant) is performed. Firstly, the pla... more In this paper, exergy analysis of a 210 MW SPP (Steam Power Plant) is performed. Firstly, the plant is modeled and validated, followed by a parametric study to show the effects of various operating parameters on the performance parameters. The net power output, energy efficiency, and exergy efficiency are taken as the performance parameters, while the condenser pressure, main steam pressure, bled steam pressures, main steam temperature, and reheat steam temperature isnominated as the operating parameters. Moreover, multiple polynomial regression models are developed to correlate each performance parameter with the operating parameters. The performance is then optimizedby using Direct-searchmethod. According to the results, the net power output, energy efficiency, and exergy efficiency are calculated as 186.5 MW, 31.37 and 30.41%, respectively under normal operating conditions as a base case. The condenser is a major contributor towards the energy loss, followed by the boiler, wherea...
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IOP Conference Series: Earth and Environmental Science, 2019
This study presents a detailed energy analysis of a Combined Cooling and Power (CCP) plant operat... more This study presents a detailed energy analysis of a Combined Cooling and Power (CCP) plant operated by Parabolic Trough Solar Collectors (PTSCs). The integrated cycles; Vapor Absorption Refrigeration Cycle (VARC) and Organic Rankine Cycle (ORC) are used to produce cooling and power, respectively. Six organic working fluids, namely, R113, R141b, R123, R245fa, R142b, and isobutane were selected for ORC, while LiBr-H2O solution used in VARC. Four key energetic parameters, useful heat gain, work output, cooling rate, and energy utilization factor (EUF) were examined during varying direct normal irradiance (DNI). A parametric study was carried out in three modes of operation, power only, combined power and cooling and cooling only under the limits of DNI from 0.6 kW/m2to 0.88 kW/m2recorded on the yearly-average basis in two cities of Pakistan, Lahore, and Quetta respectively. Results enunciated that R113 given the highest thermal efficiency of 17.12%, while isobutane gave the least therm...
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Mehran University Research Journal of Engineering and Technology, 2017
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Heat and Mass Transfer, 2018
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Sustainable Cities and Society, 2017
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Applied Thermal Engineering, 2017
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ABSTRACT The conventional energy analysis evaluates the performance of a thermodynamic system gen... more ABSTRACT The conventional energy analysis evaluates the performance of a thermodynamic system generally on its quantity only. It gives no information about the effect of irreversibilities on performance that occurs inherently during any thermodynamic process. On the other hand, exergy analysis, based on the second law of thermodynamics recognizes magnitudes and locations of the losses due to these irreversibilities. Therefore, the application of exergy analysis for thermodynamic evaluation of conventional power plants is steadily growing. This paper deals with the exergy analysis performed on a 144 MW combined cycle power plant situated at Kotri, Pakistan. The exergy destruction models are used to assess the losses occurred in the key components of the power plant. The results indicate that the total exergy destruction of the power plant is around 288.5 MW; combustion chambers contribute a major share of 168 MW (58.2%) followed by heat recovery steam generators (HRSGs) with 43 MW (14.8%). The energy efficiency and exergy efficiency of the power plant are calculated as 34.41 and 33.40% respectively. Finally, some suggestions regarding the efficiency improvement of the power plant components are given.
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Energy Procedia, 2014
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Journal of the Energy Institute, 2014
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Energy Conversion and Management, 2013
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Papers by Abdul Ghafoor Memon