The Experts below are selected from a list of 23949 Experts worldwide ranked by ideXlab platform
Ammar Ben Brahim - One of the best experts on this subject based on the ideXlab platform.
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energetic and exergetic analysis of a Steam Turbine power plant in an existing phosphoric acid factory
Energy Conversion and Management, 2015Co-Authors: Fathia Hafdhi, Tahar Khir, Ali Ben Yahyia, Ammar Ben BrahimAbstract:Abstract An energetic and exergetic analysis is conducted on a Steam Turbine Power Plant of an existing Phosphoric Acid Factory. The heat recovery systems used in the different parts of the plant are also considered in the study. Mass, energy and exergy balances are established on the main compounds of the plant. A numerical code is established using EES software to perform the calculations required for the thermal and exergy plant analysis considering real variation ranges of the main operating parameters such as pressure, temperature and mass flow rate. The effects of theses parameters on the system performances are investigated. The main sources of irreversibility are the melters, followed by the heat exchangers, the Steam Turbine generator and the pumps. The maximum energy efficiency is obtained for the blower followed by the heat exchangers, the deaerator and the Steam Turbine generator. The exergy efficiency obtained for the heat exchanger, the Steam Turbine generator, the deaerator and the blower are 88%, 74%, 72% and 66% respectively. The effects of High Pressure Steam temperature and pressure on the Steam Turbine generator energy and exergy efficiencies are investigated.
Michael Casey - One of the best experts on this subject based on the ideXlab platform.
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experimental investigation of droplet size influence on low pressure Steam Turbine blade erosion
Wear, 2013Co-Authors: M. Ahmad, Markus Schatz, Michael CaseyAbstract:Abstract In the last stages of Steam Turbines, large droplets (so-called coarse water) are generated from the wet Steam flow. These droplets collide with the following rotating blades with almost the peripheral speed of the rotor. This high speed impact is perceived in the form of erosion of low pressure Steam Turbine blades. Among others, impacting droplet size is a key parameter contributing to the erosion of low-pressure Steam Turbine blades. At the Institute of Thermal Turbomachinery and Machinery Laboratory (ITSM) Stuttgart, the effect of droplet size on the erosion of Steam Turbine blade has been investigated with the help of an erosion test rig. The experiments confirm that the erosion increases with increasing droplet sizes. It is also found that volume loss per droplet impact increases with droplet size with a simple power law relation Erosion ~ D droplet n where value of n is found to be 3.2 up to 3.5 for common blade materials.
Pei Liu - One of the best experts on this subject based on the ideXlab platform.
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data reconciliation for the overall thermal system of a Steam Turbine power plant
Applied Energy, 2016Co-Authors: Sisi Guo, Pei LiuAbstract:Abstract Accuracy of online measurement data is usually not satisfactory for coal-fired power plants due to constraints of measurement techniques. Data reconciliation can help to improve the accuracy of online measurement with no extra requirements on equipment upgrading. Traditionally, data reconciliation is applied to a sub-system of a coal-fired power plant, for instance, mass balance of a Steam Turbine system. In this work, we present a systematic approach where data reconciliation is applied to the overall thermal system of a real-life Steam Turbine power plant. Improvement of data accuracy is obtained via the proposed approach compared with sub-system studies. Optimization of system selection and configuration of a data reconciliation problem is analyzed. Results show that uncertainty of on-line measured data can be reduced by up to 50% in a 1000 MW ultra-supercritical coal-fired Steam Turbine power plant compared with previous studies.
T L Shibaev - One of the best experts on this subject based on the ideXlab platform.
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process circuit and layout solutions for Steam Turbine units and performance efficiency of thermal power plants
Thermal Engineering, 2014Co-Authors: A A Goldberg, T L ShibaevAbstract:Criteria for evaluating process-circuit and layout solutions adopted in designing Steam-Turbine units are presented together with their values for a number of Steam-Turbine units produced by the Ural Turbine Works. The presented values of the criteria are recommended for being used as tentative ones in designing new thermal power plants or in upgrading them with the use of Steam Turbine units operating both as basic power installations and as part of combined-cycle power plants. The influence of process-circuit and layout solutions adopted for Steam-Turbine units on the effectiveness of thermal power plant construction and plant performance efficiency is shown.
Fathia Hafdhi - One of the best experts on this subject based on the ideXlab platform.
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energetic and exergetic analysis of a Steam Turbine power plant in an existing phosphoric acid factory
Energy Conversion and Management, 2015Co-Authors: Fathia Hafdhi, Tahar Khir, Ali Ben Yahyia, Ammar Ben BrahimAbstract:Abstract An energetic and exergetic analysis is conducted on a Steam Turbine Power Plant of an existing Phosphoric Acid Factory. The heat recovery systems used in the different parts of the plant are also considered in the study. Mass, energy and exergy balances are established on the main compounds of the plant. A numerical code is established using EES software to perform the calculations required for the thermal and exergy plant analysis considering real variation ranges of the main operating parameters such as pressure, temperature and mass flow rate. The effects of theses parameters on the system performances are investigated. The main sources of irreversibility are the melters, followed by the heat exchangers, the Steam Turbine generator and the pumps. The maximum energy efficiency is obtained for the blower followed by the heat exchangers, the deaerator and the Steam Turbine generator. The exergy efficiency obtained for the heat exchanger, the Steam Turbine generator, the deaerator and the blower are 88%, 74%, 72% and 66% respectively. The effects of High Pressure Steam temperature and pressure on the Steam Turbine generator energy and exergy efficiencies are investigated.