Results 191 to 200 of about 23,169 (217)
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IEEJ Transactions on Power and Energy, 2021
AbstractWe conduct an axisymmetric, two‐dimensional (r − z) magnetohydrodynamic numerical analysis of a large‐scale, nonequilibrium disk‐shaped MHD generator with a thermal input of 1 GW to examine the influence of a total pressure loss between the hot duct inlet and the supersonic nozzle outlet of the MHD generator on its isentropic efficiency ...
Yuki Sakamoto +2 more
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AbstractWe conduct an axisymmetric, two‐dimensional (r − z) magnetohydrodynamic numerical analysis of a large‐scale, nonequilibrium disk‐shaped MHD generator with a thermal input of 1 GW to examine the influence of a total pressure loss between the hot duct inlet and the supersonic nozzle outlet of the MHD generator on its isentropic efficiency ...
Yuki Sakamoto +2 more
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The world's highest isentropic efficiency of a shock-tube driven disk CCMHD generator
Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472), 2004Closed cycle magnetohydrodynamics (CCMHD) power generation experiments using a shock-tube driven disk generator have been conducted to achieve high performance. Despite of a small-scale generator having a generating volume of 4.1 liter, outstanding performance: an isentropic efficiency of 63 % and an enthalpy extraction ratio of 30.8 % is achieved at a
T. Murakami, Y. Okuno, H. Vamasaki
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Journal of Applied Physics, 2009
We describe the effect of a radio-frequency (rf) power application on the performance of a magnetohydrodynamic (MHD) electrical power generator, as determined through shock-tunnel-based experiments and quasi-three-dimensional numerical simulations. The temporal plasma-fluid behavior, the one-dimensional plasma-fluid structure, the enthalpy-entropy ...
Tomoyuki Murakami, Yoshihiro Okuno
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We describe the effect of a radio-frequency (rf) power application on the performance of a magnetohydrodynamic (MHD) electrical power generator, as determined through shock-tunnel-based experiments and quasi-three-dimensional numerical simulations. The temporal plasma-fluid behavior, the one-dimensional plasma-fluid structure, the enthalpy-entropy ...
Tomoyuki Murakami, Yoshihiro Okuno
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Aircraft Engineering and Aerospace Technology, 2021
Purpose Usage of gas turbine engines has increased by day due to rising demand for military and civil applications. This case results in investigating diverse topics related to energy efficiency and irreversibility of these systems. The purpose of this paper is to perform a detailed entropy assessment of turbojet engines for different flight ...
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Purpose Usage of gas turbine engines has increased by day due to rising demand for military and civil applications. This case results in investigating diverse topics related to energy efficiency and irreversibility of these systems. The purpose of this paper is to perform a detailed entropy assessment of turbojet engines for different flight ...
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The Effect of Shock Waves on the Isentropic Efficiency of Convergent— Divergent Nozzles
The Journal of the Royal Aeronautical Society, 1958Now a Days, the phenomenon is well known of the plane normal shock waves set up in the divergent section of a convergent-divergent nozzle, and the oblique shocks which occur in the resultant jet downstream of the nozzle exit when operating under overall pressure ratios less than the design value.
B. W. Martin, F. J. Bayley
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Experimental Study of the Isentropic Efficiency of the Pulse Tube Expansion Process
1997The pulse tube is a simple and reliable new refrigeration device. But so far it is used only in regenerative cryocoolers with quite small refrigeration powers. For applications that require larger refrigeration powers, such as gas separation and liquefaction, the flow diagram of the regenerative pulse tube refrigerator may be inadequate.
J. Liang, C. Q. Zhang, Y. Zhou
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Volume 7: Manufacturing Materials & Metallurgy; Microturbines, Turbochargers & Small Turbomachines; Oil & Gas Applications; Steam Turbine; Structures and Dynamics: Aerodynamics Excitation & Damping
Abstract Adequate seawater (SW) flow or cooling water flow through the condenser in a thermal power plant is a critical factor in maintaining the isentropic efficiency of the LP steam turbine, condenser pressure and moisture content at the turbine exhaust.
Yahya Zafar +3 more
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Abstract Adequate seawater (SW) flow or cooling water flow through the condenser in a thermal power plant is a critical factor in maintaining the isentropic efficiency of the LP steam turbine, condenser pressure and moisture content at the turbine exhaust.
Yahya Zafar +3 more
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2023
Organik Rankine Çevrimi (ORC), düşük dereceli ısı kaynaklarını faydalı işe dönüştürmek için yaygın olarak kullanılan termodinamik çevrimdir. ORC sisteminin verimliliğini en üst düzeye çıkarmak için uygun bir çalışma akışkanı ve türbinin seçimi önemlidir. Bu çalışmada, türbin izentropik verimliliğinin ve farklı soğutucu akışkanlarının ORC'nin genel
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Organik Rankine Çevrimi (ORC), düşük dereceli ısı kaynaklarını faydalı işe dönüştürmek için yaygın olarak kullanılan termodinamik çevrimdir. ORC sisteminin verimliliğini en üst düzeye çıkarmak için uygun bir çalışma akışkanı ve türbinin seçimi önemlidir. Bu çalışmada, türbin izentropik verimliliğinin ve farklı soğutucu akışkanlarının ORC'nin genel
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Isentropic Efficiency and Entropy Change in a Rankine Cycle
International Journal of Mechanical Engineering Education, 1996openaire +1 more source
Determination Of Major Losses And Isentropic Efficiency In Axial Flow Turbines
مجلة جامعة الزيتونة, 2019Musbah Salem, Salah Bashir
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