The Experts below are selected from a list of 22839 Experts worldwide ranked by ideXlab platform
Osama M Ibrahim - One of the best experts on this subject based on the ideXlab platform.
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solar assisted Steam Power Plant retrofitted with regenerative system using parabolic trough solar collectors
Energy Reports, 2020Co-Authors: Sorour Alotaibi, Fahad Alotaibi, Osama M IbrahimAbstract:Abstract This work investigates the performance of a conventional Steam Power Plant retrofitted with a solar-assisted regenerative system using Parabolic Trough Solar Collectors (PTC). The solar collectors were used to compensate for the effect of removing Low-Pressure (LP) turbine extractions without changing other elements of a 300 MW Power Plant unit during peak load operations. The Steam Power Plant, located in Kuwait, receives high levels of solar irradiation. Modeling of the solar-assisted regenerative system using PTC is simulated for Kuwait’s weather conditions. Results of the system analysis show that removing the LP turbine extractions enhanced the performance of the Steam Power Plant by 9.8 MW, with an optimum PTC aperture area equal to 25,850 m2. A techno-economic analysis was used to estimate the Levelized Cost of Energy (LCOE). Compared to an equivalent photovoltaic solar Plant, the optimum aperture area and LCOE for the PTC solar Plant were found to be less by 45% and 44%, respectively. When compared to an equivalent conventional Steam turbine, the solar-assisted Steam Power Plant decreased cost by 56% over the lifecycle of 25-years.
Sorour Alotaibi - One of the best experts on this subject based on the ideXlab platform.
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solar assisted Steam Power Plant retrofitted with regenerative system using parabolic trough solar collectors
Energy Reports, 2020Co-Authors: Sorour Alotaibi, Fahad Alotaibi, Osama M IbrahimAbstract:Abstract This work investigates the performance of a conventional Steam Power Plant retrofitted with a solar-assisted regenerative system using Parabolic Trough Solar Collectors (PTC). The solar collectors were used to compensate for the effect of removing Low-Pressure (LP) turbine extractions without changing other elements of a 300 MW Power Plant unit during peak load operations. The Steam Power Plant, located in Kuwait, receives high levels of solar irradiation. Modeling of the solar-assisted regenerative system using PTC is simulated for Kuwait’s weather conditions. Results of the system analysis show that removing the LP turbine extractions enhanced the performance of the Steam Power Plant by 9.8 MW, with an optimum PTC aperture area equal to 25,850 m2. A techno-economic analysis was used to estimate the Levelized Cost of Energy (LCOE). Compared to an equivalent photovoltaic solar Plant, the optimum aperture area and LCOE for the PTC solar Plant were found to be less by 45% and 44%, respectively. When compared to an equivalent conventional Steam turbine, the solar-assisted Steam Power Plant decreased cost by 56% over the lifecycle of 25-years.
Fahad Alotaibi - One of the best experts on this subject based on the ideXlab platform.
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solar assisted Steam Power Plant retrofitted with regenerative system using parabolic trough solar collectors
Energy Reports, 2020Co-Authors: Sorour Alotaibi, Fahad Alotaibi, Osama M IbrahimAbstract:Abstract This work investigates the performance of a conventional Steam Power Plant retrofitted with a solar-assisted regenerative system using Parabolic Trough Solar Collectors (PTC). The solar collectors were used to compensate for the effect of removing Low-Pressure (LP) turbine extractions without changing other elements of a 300 MW Power Plant unit during peak load operations. The Steam Power Plant, located in Kuwait, receives high levels of solar irradiation. Modeling of the solar-assisted regenerative system using PTC is simulated for Kuwait’s weather conditions. Results of the system analysis show that removing the LP turbine extractions enhanced the performance of the Steam Power Plant by 9.8 MW, with an optimum PTC aperture area equal to 25,850 m2. A techno-economic analysis was used to estimate the Levelized Cost of Energy (LCOE). Compared to an equivalent photovoltaic solar Plant, the optimum aperture area and LCOE for the PTC solar Plant were found to be less by 45% and 44%, respectively. When compared to an equivalent conventional Steam turbine, the solar-assisted Steam Power Plant decreased cost by 56% over the lifecycle of 25-years.
Omid Ali Akbari - One of the best experts on this subject based on the ideXlab platform.
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evaluation of supply boiler rePowering of an existing natural gas fired Steam Power Plant
Applied Thermal Engineering, 2017Co-Authors: Omid Ali Akbari, Ali Marzban, Gholamreza AhmadiAbstract:Abstract Using supply boiler to rePower existing Steam Power Plants (also known as parallel rePowering) is one of the awesome rePowering methods for almost all types of Steam Power Plants. In this way, the capacity of the gas turbine and heat recovery Steam generator (HRSG) can be designed in different ranges. Choosing the best number of HRSG pressure levels and the appropriate way to integrate the generated Steam in the HRSG with the existing cycle are important steps during the cycle design. In this paper, we analyse the effects of HRSG pressure levels on the performance of existing boiler and turbines for Montazeri Steam Power Plant in Iran. To do this, we present three separate HRSG configurations and a multi-parameter analysis is provided. For each case, the effects on existing boiler, Steam turbines and the condenser are examined. The results show that using HRSG with higher pressure levels (2 or 3) are caused an imbalance in mass flow rate of Steam in Steam turbines and different parts of the existing boiler. Therefore, using a single-pressure level HRSG with a reheat is recommended for this aim. If we use one HRSG and a gas turbine model Mitsubishi-701G2, net energy and exergy efficiencies and produced Power will increases %52.19, %50.9 and 485.8 MW, respectively.
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evaluation of synchronous execution of full rePowering and solar assisting in a 200 mw Steam Power Plant a case study
Applied Thermal Engineering, 2017Co-Authors: Gholamreza Ahmadi, A. R. Azimian, Davood Toghraie, Omid Ali AkbariAbstract:Abstract This study investigates a full rePowering simultaneously with merging solar energy in 200 MW units of Montazeri Steam Power Plant in Iran. A 400 MW gas turbine has been used for full rePowering. A part of feed water in the solar field turns into saturated Steam. In the rePowered cycle without the involvement of solar energy, the energy and exergy efficiencies have increased by 76.8% and 73% reaching to 59.11% and 56.63%, respectively. In Power increase mode, the mass flow rate of water in solar field is not to be more than 31.3 kg/s. Under this condition, the Power of the Steam turbines will experience a 16.8 MW increase. In efficiency improvement mode, with 75 kg/s feed water in solar field and the generation Power of the Steam turbine to be fixed, the consumption of natural gas by the gas turbine will decrease 2.21 kg/s. This will reduce natural gas consumption and CO2 emissions by 21,481,200 kg and 43,392 ton per year, respectively. Considering the price of natural gas and CO2 to be 0.2 USD/kg and 100 USD/ton respectively, the rewarded profit due to a reduction in both fuel consumption and CO2 emission will be 8,635,440 USD per year.
Mehmet Tontu - One of the best experts on this subject based on the ideXlab platform.
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an exergoeconomic environmental analysis of an organic rankine cycle system integrated with a 660 mw Steam Power Plant in terms of waste heat Power generation
Energy Sources Part A-recovery Utilization and Environmental Effects, 2020Co-Authors: Mehmet Tontu, Besir Sahin, Mehmet BilgiliAbstract:This study aimed to assess the thermodynamic performance of an Organic Rankine Cycle (ORC) unit for Power generation operated by the industrial waste heat of exhaust gas of a Steam Power Plant. For...
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An exergoeconomic–environmental analysis of an organic Rankine cycle system integrated with a 660 MW Steam Power Plant in terms of waste heat Power generation
Energy Sources Part A: Recovery Utilization and Environmental Effects, 2020Co-Authors: Mehmet Tontu, Besir Sahin, Mehmet BilgiliAbstract:This study aimed to assess the thermodynamic performance of an Organic Rankine Cycle (ORC) unit for Power generation operated by the industrial waste heat of exhaust gas of a Steam Power Plant. For...
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Performance Analysis of a Large-Scale Steam Condenser Used in a Steam Power Plant
European Mechanical Science, 2020Co-Authors: Mehmet TontuAbstract:This paper summarizes performance analysis of large-scale seawater-cooled box type condenser in a 660 MW Steam Power Plant. Effect of seawater temperature and Steam mass flow rate are investigated on the key performance parameters of Steam condenser. Results indicated that improvement in the cooling water temperature generally is found favorable on the performance indicators of condenser. On the other hand, in the case of Steam flow rate changing, effectiveness and overall heat transfer coefficient almost remain constant. Effectiveness of condenser isn’t found as a function of Steam flow variation. Moreover, Steam Power Plant heat rate is investigated as a function of cooling water of condenser and thus it is seen to be decreased in the result of improvement of cooling water temperature. Conversely, Power Plant overall thermal efficiency decreases due to reduction of Power generation.
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Performance analysis of an industrial Steam Power Plant with varying loads
International Journal of Exergy, 2018Co-Authors: Mehmet Tontu, Mehmet Bilgili, Besir SahinAbstract:In this study, energy and exergy analyses of a coal-fired Steam Power Plant with 660-MW capacity were conducted to define the system performance. Analyses were performed with three different rates of operating loads such as 100%, 70% and 40%. Influences of three different loads on the exergy destructions were investigated for all Plant components. In addition, the exergy efficiency of each component and the overall thermal efficiency of the Steam Power Plant were computed. The first-law efficiencies of thermal Power Plant were determined to be 41.5%, 39.7% and 36.4% at three different loading capacities such as 100%, 70% and 40%, respectively. The second-law efficiencies of thermal Power Plant were calculated to be 39.1%, 37.4% and 34.3% at loading capacities of 100%, 70% and 40%, respectively. According to the obtained results, energy losses mainly happen in the condenser and exergy destructions mainly take place in the boiler.