Results 61 to 70 of about 16,018 (218)

Studies on Performance Assessment in Back Pressure Turbine

open access: yesJournal of Advanced Mechanical Sciences, 2022
The backpressure turbine is used for supplying process steam to the facilities of power generation. This type of steam turbine not only produces electricity but also supplies low- pressure steam for various requirements.
Aditya Gadkari
doaj  

Effect of 600 MW Supercritical Steam Turbine Prolonging Running Time of Mixing Valve on Unit Vibration

open access: yes发电技术, 2019
The bearing vibration of No.2, No.3, No.4, No.5, No.6 of a 600 MW supercritical steam turbine in a power plant is relatively large. In order to solve this problem, the intake mode of the steam turbine was changed by prolonging the operation time of the ...
Xiaojun HUANG, Xiangguo DU
doaj   +1 more source

A Consideration on the Flow of Steam in Steam Turbines.

open access: yesJournal of the Society of Mechanical Engineers, 1941
多段落衝動タービンの相隣れる段落に於て、前段落の羽根より流出する蒸汽の有する速度エネルギの利用問題を中心として、タービン内における蒸汽の流動を取扱つた。就中低圧部で相隣れる二つの段落の間隙が可なりあり、且両段落の平均羽根円直径に急変を與へる場合をとつて、かゝる構造の汽室内に運轉状態の如何によつて起ることあるべき蒸汽の種々の流動状態を近似的計算によつて解析した。そして如何なる設計にすればかゝる特殊構造の段落のノズル效率を増進し、且その特性を改善し得るかを論じた。
openaire   +2 more sources

Environmental Thermoeconomic Performance Analysis of Gas Steam Combined Cycle With Different Inlet Air Cooling Technologies

open access: yesEnergy Science &Engineering, EarlyView.
This study establishes an environmental thermoeconomic cost model to investigate the impact of two IAC technologies on the performance of a GSCC from three aspects of energy, economy, and environment. Under arid climate conditions, the SEC technology demonstrates superior performance in terms of cost‐effectiveness and environmental impact.
Zhen Wang, Li Zhang, Yu Ni, Liqiang Duan
wiley   +1 more source

Research on dehumidification optimization of steam turbine wet steam stage hollow stator cascade heating

open access: yesCase Studies in Thermal Engineering, 2023
The secondary water droplets in the steam turbine wet steam stage are easy to cause water erosion damage to the rotor cascade, and there is a large speed slip between the main steam flow and the secondary water droplets, which will seriously affect the ...
Xu Han   +6 more
doaj   +1 more source

Renewable Energies in Kazakhstan: Current Status, Potential, Challenges, and Opportunities

open access: yesEnergy Science &Engineering, EarlyView.
Kazakhstan has strong renewable energy potential, with wind as the leading resource and solar and other sources offering additional opportunities. Key challenges include limited infrastructure, investment needs, and grid‐related technical issues. Despite these barriers, renewables can boost economic diversification, enhance energy security, create jobs,
Lyailim Taizhanova   +7 more
wiley   +1 more source

Detection of shaft-seal rubbing in large-scale power generation turbines with acoustic emissions. Case study. [PDF]

open access: yes, 2004
Rubbing between the central rotor and the surrounding stationary components of machinery such as large-scale turbine units can escalate into severe vibration, resulting in costly damage.
Mba, David   +3 more
core  

Selecting Between Hydrogen and Methanol for Fuel Cell‐Organic Rankine Cycle Hybrid Power Systems: A Comparative 4E Analysis

open access: yesEnergy Science &Engineering, EarlyView.
A 4E comparison of PEMFC‐ORC and DMFC‐ORC systems shows that PEMFC‐ORC achieves 21% higher energy efficiency, while DMFC‐ORC obtains 31% higher exergy efficiency and 57% lower levelized cost of electricity. However, DMFC‐ORC emits nearly twice the annual carbon dioxide equivalent of PEMFC‐ORC.
Zahra Piryaei   +2 more
wiley   +1 more source

PMU‐Based Wide Area Monitoring With Machine Learning to Prevent Blackouts in Bangladesh Power System

open access: yesEnergy Science &Engineering, EarlyView.
A Unified Real‐time Dynamic State Measurements (URTDSM) system with PMU and Phasor Data Concentrator (PDC) deployment plan has been proposed to avoid blackout in the Bangladeshi power system. Machine learning has been used to process data from PMU to identify abnormal events. ABSTRACT The electrical power system must be trustworthy and secure enough to
Imi Bintey Fariha Rahman   +5 more
wiley   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

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