Results 81 to 90 of about 5,041 (207)
Advances in Mechanical Engineering, 2016 This article presents a multi-objective optimization to improve the hydrodynamic performance of a counter-rotating type pump-turbine operated in pump and turbine modes.
Jin-Woo Kim +6 more
doaj +1 more source
Low power steam turbine energy efficiency and losses during the developed power variation
Tehnički Glasnik, 2018 This paper investigates low power marine steam turbine during the variation in its developed power. The turbine is used for the Main Feedwater Pump (MFP) drive.
Vedran Mrzljak
doaj +1 more source
Energy 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
Energy Science &Engineering, EarlyView.A novel combined cooling and power generation system is proposed by integrating organic Rankine cycle (ORC) with an absorption heat transformer, which is driven by combining geothermal energy and data center's waste heat. The system using R601a yielded the best overall performance, achieving an exergy efficiency of 40.34% and an annual cost of 130.29 k$
Zerui Chen +4 more
wiley +1 more source
Performance of a centrifugal pump running in inverse mode
, 2004 This paper presents the functional characterization of a centrifugal pump used as a turbine. It shows the characteristics of the machine involved at several rotational speeds, comparing the respective flows and heads.
Scanlon, T.J. +9 more
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Abrupt Stoppage of Turbine Rotor, Running on Barring after Major Overhauling [PDF]
, 2016 Case StudyCase Study 15: This case study is about a typical experience where a steam turbine, which was running at 100 RPM on barring (turning) after overhaul, stopped abruptly and the rotor was found to be seized.
Reddy, Ranga, Reddy, Ravi S.
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Frontiers in Energy ResearchIn current engineering, the transition process of pump turbines from pump to turbine mode mainly includes the shutdown process of pump operating and the startup process of turbine operating, and the switching of working conditions mostly depends on the ...
Zhe Man +10 more
doaj +1 more source
Integrated Solar and Wind Energy Systems for Domestic Power Generation and CO2 Emissions Reduction
Energy Science &Engineering, EarlyView.A well‐structured and sequentially methodical procedure for evaluating the Wind and Photovoltaic Hybrid Energy System‐based technical, environmental, and economic viability. This study investigates the integration of solar photovoltaic(PV) and wind energy systems for domestic electricity generation in the Gaza Strip.
Mohamed Elnaggar +9 more
wiley +1 more source
Gas Turbine Performance and Maintenance [PDF]
, 2018 TutorialsIn this tutorial, we will address the basic characteristics of each of the components in a gas turbine (compressor, combustor, gas generator turbine, power turbine) and the impact of typical control limits and control concepts.
Brun, Klaus, Kurz, Rainer
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COKING OF GAS TURBINE LUBRICATION OILS AT ELEVATED TEMPERATURES [PDF]
, 2022 LecturesOver the last several decades, turbine efficiency has improved significantly, resulting in higher turbine operating temperatures that negatively affect the lubricating oil circulating through the system.
Petersen, Eric L., Juarez, Raquel
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