Results 131 to 140 of about 143,374 (309)

Energy Flexibilization and Demand Response for a Novel Decentralized Power‐to‐Methanol Process

open access: yesChemie Ingenieur Technik, EarlyView.
This study presents the results of an optimization framework for the scheduling of a Power‐to‐methanol process coupled with an electrolyser, renewable energy sources and a battery. The optimal dynamic operating schedule is computed with different configurations and boundary conditions, showing the advantages of flexible operation.
Max Kollmer   +5 more
wiley   +1 more source

Determination of Vibration Properties and Reliable Frequency Estimation for Synchronous Vibrations Through Improved Blade Tip Timing Techniques Without a Once-per-Revolution Sensor

open access: yesSensors
Synchronous vibrations, which are caused by periodic excitations, can have a severe impact on the service life of impellers. Blade Tip Timing (BTT) is a promising technique for monitoring synchronous vibrations due to its non-intrusive nature and ability
Marios Sasakaros   +3 more
doaj   +1 more source

The Gas Turbine

open access: yesJournal of the Fuel Society of Japan, 1951
ガスターピンは歐洲及び米国に於いては既に実用の段階に達し, 今後釜々広く使用される傾向にある。鉄道技術研究所に於いてはこの情勢に着目して昭和22年よりガスタービンの研究に着手し, ガスタービンの各構成部分に就ての実験装置及び綜合的な運転試験の装置をつくり研究を行つた。運転試験の結果から, 定格運転に於いて効率11%, 出力2, 150HPという大略計算値に近い値に達し得る事が認められる。又この運転中に次の諸点に故障が起り夫々改良が加えられた。 (イ) 燃料噴射弁の閉塞,(口) 燃料予熱管の焼損,(ハ) 燃焼管内筒の焼損,(ニ) 姶動用点火栓の燵損,(ホ) 燃燒管外筒の赤熱,(へ) タービン翼の破断。各構成部分の実験の中微粉炭燃燒装置に依る実験は, 石炭の種類, 空燃比 ...
openaire   +2 more sources

Durene conversion in a methanol‐to‐jet process: Exploring conversion at 150–350°C over different acid catalysts

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Acid catalyzed conversion of durene by isomerization, disproportionation, and transalkylation is of interest to the development of a methanol‐to‐jet process to reduce the amount of durene in the kerosene. It was of interest to determine whether durene conversion could be performed at a temperature lower than 350°C.
Aida G. Velasco Ortiz   +2 more
wiley   +1 more source

Fringes, Flows, and Fractures—A Schlieren Study of Fluid and Optical Discontinuities

open access: yesFluids
This article presents a collection of schlieren visualizations captured using a custom-built, laboratory-based imaging system, designed to explore a wide range of flow and refractive phenomena.
Emilia Georgiana Prisăcariu   +2 more
doaj   +1 more source

Design study of shaft face seal with self-acting lift augmentation. 4: Force balance [PDF]

open access: yes
A method for predicting the operating film thickness of self-acting seals is described. The analysis considers a 16.76-cm mean diameter seal that is typical of large gas turbines for aircraft.
Johnson, R. L., Ludwig, L. P., Zuk, J.
core   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

open access: yesDeep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Additive Manufacturing in Space: Technologies, Flight Heritage, and Materials

open access: yesTechnologies
Additive manufacturing (AM) is increasingly recognized as a critical enabler for sustainable space exploration, offering on-demand fabrication, reduced reliance on Earth-based resupply, and enhanced mission autonomy. Over the past decade, in-space AM has
Emilia Georgiana Prisăcariu   +2 more
doaj   +1 more source

Cogeneration Technology Alternatives Study (CTAS). Volume 3: Industrial processes [PDF]

open access: yes
Cogenerating electric power and process heat in single energy conversion systems rather than separately in utility plants and in process boilers is examined in terms of cost savings.
Gerlaugh, H. E.   +2 more
core   +1 more source

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