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Guangchao Ye, Wei Wang, Haicheng Liu, Wenqiang Xie, Shixing Xia, Qinggang Meng and Peng Lin
A Tm,Ho:YAP laser at cryogenic temperature is demonstrated for the first time with simultaneous emission at 2000 nm and 2119 nm. The feasibility of switching wavelength and achieving balanced output powers at two widely separated wavelengths has been con...
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Xiaobing Wang, Junqiang Wu, Jianzhong Chen, Yuping Li, Zhongliang Zhao, Guangyuan Liu, Yang Tao and Neng Xiong
Cryogenic wind tunnels provide the for possibility aerodynamic tests to take place over high Reynolds numbers by operating at a low gas temperature to meet the real flight simulation requirements, especially for state-of-the-art large transport aircrafts...
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Myung-Sung Kim and Kang Woo Chun
As the maritime industry?s emphasis on sustainable fuels has increased, liquid hydrogen (LH2) has emerged as a promising alternative due to its high energy density and zero-emission characteristics. While the experience of using natural gas in ships can ...
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Mikhail Tarasov, Aleksandra Gunbina, Artem Chekushkin, Mikhail Strelkov and Valerian Edelman
Infrared and millimeter-wave band astronomical superconducting receivers require precise sources for instrument monitoring and calibration inside the cryostat. A cryogenic microwave blackbody radiation source with variable radiation temperature is the ma...
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Du-Song Kim, Hee-Keun Lee, Woo-Jae Seong, Kwang-Hyeon Lee and Hee-Seon Bang
The International Maritime Organization has recently updated the ship emission standards to reduce atmospheric contamination. One technique for reducing emissions involves using liquefied natural gas (LNG). The tanks used for the transport and storage of...
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Giovanni Gugliandolo, Andrea Alimenti, Mariangela Latino, Giovanni Crupi, Kostiantyn Torokhtii, Enrico Silva and Nicola Donato
Microwave transducers are widely used for sensing applications in areas such as gas sensing and microfluidics. Inkjet printing technology has been proposed as a promising method for fabricating such devices due to its capability to produce complex patter...
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Yongming Yan, Zixiang Luo, Ke Liu, Chen Zhang, Maoqiu Wang and Xinming Wang
Cryogenic treatment as a process that can effectively improve the performance of steel materials is widely used because of its simplicity and speed. This paper investigates the effects of different low temperature treatments on the microstructure and pro...
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Mohamed F. Aly Aboud, Zeid A. ALOthman and Abdulaziz A. Bagabas
Hydrogen storage may be the bottle neck in hydrogen economy, where hydrogen spillover is in dispute as an effective mechanism. In this context, activated carbon (AC) was doped with nitrogen by using ammonia gas, and was further decorated with platinum, p...
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Erik Nyberg, Dídac Llopart i Cervelló and Ichiro Minami
Liquid lubricants are critical to enable long-life operation of high-performance machinery, such as geared actuators employed in robotics. In space applications, actuator gearboxes must operate in low temperatures, where liquid lubricants face inherent p...
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Matija Hribersek, Lucijano Berus, Franci Pusavec and Simon Klancnik
Implementation of a machine learning procedure to model the temperature drop in the cryogenic cooling of Inconel 718. Machine learning is performed by an adaptive neuro-fuzzy inference system (ANFIS). Based on a representative set of cryogenic cooling ex...
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Diego Scaccabarozzi, Bortolino Saggin, Marianna Magni, Marco Giovanni Corti, Pietro Valnegri, Ernesto Palomba, Andrea Longobardo, Fabrizio Dirri and Emiliano Zampetti
Outgassing or thruster?s generated contaminants are critical for optical surfaces and optical payloads because scientific measurements and, in general, the performances can be degraded or jeopardized by uncontrolled contamination. This is a well-known is...
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Seunghun Choi, Jongho Won, Jung-Jun Lee, Hee-Keun Lee, Seong-Min Kim, Changhyun Cho and Dongil Kwon
Invar alloy sheet was welded by resistance seam welding (RSW) with a constant electrode force and three different welding currents. Tensile properties were evaluated using instrumented indentation testing (IIT) with a spherical indenter and microstructur...
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A novel method proposed to choose the optimal working fluid—solely from the point of view of expansion route—for a given heat source and heat sink (characterized by a maximum and minimum temperature). The basis of this method is the novel cla...
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Hyo Seo Kwak, Hansaem Seong, Rivaldo Mersis Brilianto and Chul Kim
In combined cycle power plants (CCPPs), the bypass butterfly valve is a key component to facilitate regulation of exhaust gas energy available at the turbine and to not produce too much boost pressure. The conventional damper valve causes leakage, back f...
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Vladimir Verzhuk, Victor Eremin, Taisya Gasanova, Oksana Eremina, Liubov Y. Novikova, Galina Filipenko, Maxim Sitnikov and Alexander Pavlov
The long-term storage of the genetic resources of fruit crops for breeding needs can be freely developed by cryopreservation cuttings with dormant buds in liquid nitrogen vapor, but so far, this method has not been practically used for peach. Cuttings wi...
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Gun-Baek So
As international regulations on greenhouse gas emissions are becoming stricter, the development of eco-friendly main engines is required for ocean-going ships. To use cryogenic LNG as a fuel for marine engines, it has to be converted to gas. This process...
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Marijonas Bogdevicius, Vigaile Semaskaite, Tatjana Paulauskiene, Jochen Uebe and Algimantas Danilevicius
Global natural gas resources are growing and are increasingly geographically diverse. A Floating Storage and Regasification Unit (FSRU) is one of the most commonly used vessel types in the global ship fleet due to the possibility of storage, reloading to...
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Jan van Schyndel, Elke Goos, Clemens Naumann, Justin S. Hardi and Michael Oschwald
Methane (CH4) is a promising rocket fuel for various future space mission scenarios. It has advantages in terms of cost, performance, and environmental friendliness. Currently, there is no clear definition on standards and specifications for liquefied me...
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Raisa Pavlyuk,Viktoriya Pogarskaya,Aleksey Pogarskiy,Ekaterina Dudnyk,Svitlana Loseva
Pág. 57 - 65
Processes of cryomechanochemistry in development of food nanotechnologies of supplements as frozen pastes in the nano-dimensional form prepared from chlorophyll-containing vegetables (CCV) such as spinach, celery and parsley were studied. The nanotechnol...
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Xiu Xiao, Xiaoqing Xu, Zhe Wang, Chenxi Liu and Ying He
Cold energy recovery in LNG-powered vessels can not only improve the utilization efficiency of energy, but also benefit environmental protection. This paper put forward a new cascade scheme for utilizing flue gas waste heat and LNG cold energy comprehens...
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