Results 31 to 40 of about 9,407 (294)

Improving the performance of a two-phase ejector using genetic algorithm based on secondary fluid entrainment rate [PDF]

Iranian Journal of Chemical Engineering, 2022
Ejectors offer a cost-effective and practical solution for recovering flare gases, thereby reducing greenhouse gases. Improving the entrainment rate of the secondary fluid can enhance ejector performance. The objective of this research is to identify the
M. Moghadasi, M. Moraveji, O. Alizadeh
doaj   +1 more source

Review of experimental research on supercritical and transcritical thermodynamic cycles designed for heat recovery application [PDF]

, 2019
Supercritical operation is considered a main technique to achieve higher cycle efficiency in various thermodynamic systems. The present paper is a review of experimental investigations on supercritical operation considering both heat-to-upgraded heat and
De Paepe, Michel, Kosmadakis, George, Lecompte, Steven, Manolakos, Dimitris, Ntavou, Erika, Pillai, Aditya, Tchanche, Bertrand   +6 more
core   +2 more sources

Performance of Two Phase Ejector in Refrigeration Cycle.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1998
The dissipated effective kinetic energy in the refrigeration cycle can be recovered by using a two phase ejector. The performance of the two phase ejector depends on the mixing characteristics of the droplets with the large inertia and the relatively light gas. It is important for designing the two phase ejector to know characteristics of the two phase
Masafumi NAKAGAWA, Hirotsugu TAKEUCHI, Masaharu NAKAJIMA   +2 more
openaire   +2 more sources

Shape optimisation of a two-phase ejector for CO 2 refrigeration systems [PDF]

International Journal of Refrigeration, 2017
The shape optimisation of four CO2 ejectors is presented in this study. The considered ejectors were originally designed for a multi-ejector supermarket CO2 refrigeration system. The objective function was formulated to consider the multiple operating regimes, where the goal of the optimisation was to maximise the device efficiency.
Michal Palacz, Jacek Smolka, Andrzej J. Nowak, Krzysztof Banasiak, Armin Hafner   +4 more
openaire   +3 more sources

Could SXP 1062 be an Accreting Magnetar?

, 2012
In this work we explore the possible evolutionary track of the neutron star in the newly discovered Be/X-ray binary SXP 1062, which is believed to be the first X-ray pulsar associated with a supernova remnant.
Aly, Anzer, Bildsten, Bisnovatyi-Kogan, Corbet, Dai, Davies, Davies, Espinoza, Finger, Gotthelf, Gotthelf, Ikhsanov, Illarionov, Illarionov, Lei Fu, Lipunov, Livingstone, Livingstone, Livingstone, Lynden-Bell, Lyne, Matsuda, Mori, Raguzova, Romanova, Ruffert, Shakura, Spitkovsky, Toropina, Ustyugova, Wang, Wang, Waters, Xiang-Dong Li, Yokogawa, Zavlin   +36 more
core   +1 more source

Numerical Investigation of the Expansion Devices Applied in Modern Vapour Compression Refrigeration Unit Considering Specific Entropy and Entropy Generation Analyses

Chemical Engineering Transactions, 2022
Ejector-based refrigeration cycles working with natural refrigerants have already gained industry attention. Replacing throttling valve with an ejector in vapour-compression cycles brings high improvement of the cycle efficiency due to the ejectors ...
Rafal Fingas, Michal Haida, Jacek Smolka, Giorgio Besagni, Michal Palacz, Jakub Bodys, Andrzej J. Nowak   +6 more
doaj   +1 more source

WZ Sagittae as a DQ Herculis star [PDF]

, 1999
We argue that quiescent WZ Sge is a rapidly spinning magnetic rotator in which most of the matter transfered from the secondary is ejected from the system.
Buckley, Cannizzo, Cheng, de Jager, Erik Kuulkers, Frank, Frank, Gammie, Hameury, Hameury, Hellier, Hessman, Jean-Pierre Lasota, King, King, King, Lasota, Lasota, Livio, Ludwig, Mennickent, Meyer, Meyer-Hofmeister, Mineshige, Nauenberg, Osaki, Patterson, Patterson, Patterson, Patterson, Phil Charles, Robinson, Shakura, Smak, Smak, Smak, Smak, Spruit, Tovmassian, Warner, Warner, Warner, Warner, Welsh, Wickramasinghe, Wood, Wynn, Wynn, Wynn   +48 more
core   +2 more sources

Experimental study on the behavior of the two phase flow shock waves occurring in the ejector refrigeration cycle

Mechanical Engineering Journal, 2016
Conservation of energy is becoming increasingly important for the protection of the environment. Improving the efficiency of a refrigeration cycle is a critical factor to achieve this goal.
Haruyuki NISHIJIMA, Kyohei TSUCHII, Masafumi NAKAGAWA   +2 more
doaj   +1 more source

Is there a propeller neutron star in $\gamma$ Cas?

, 2017
$\gamma$ Cas is the prototype of a small population of B0-B1.5 III-V classical Be (cBe) stars that emit anomalous and hard X-rays with a unique array of properties. $\gamma$ Cas is known to host, like other cBe stars, a decretion disk and also a low mass
de Oliveira, R. Lopes, Motch, C., Smith, Myron A.   +2 more
core   +2 more sources

Optimization of oxygen transfer through venturi-based systems applied to the biological sweetening of biogas [PDF]

, 2012
Peer ReviewedPostprint (published ...
Bonsfills Pedrós, Anna, Dorado Castaño, Antonio David, Gabriel Buguña, David, Gamisans Noguera, Javier, Rodriguez Mary, Ginesta, Sanahuja Moliner, Ricard   +5 more
core   +2 more sources