Results 21 to 30 of about 788,896 (252)

Distinct facets to enhance the process of hydrogen production via methanol steam reforming — a review

Energy Storage and Saving, 2022
Methanol steam reforming manifests great potential for generating hydrogen owing to its lower reaction temperature (200–300 °C) and higher hydrogen/carbon ratio comparing with ethanol and methane reforming.
Hangyu Yu, Yuanzhi Li, Chao Xu, Fei Jin, Feng Ye, Xin Li   +5 more
doaj   +1 more source

Coupled Model of Heat and Mass Balance for Droplet Growth in Wet Steam Non-Equilibrium Homogeneous Condensation Flow

Energies, 2017
Because of the complexity of wet steam two-phase condensation flow, many problems remain to be solved. The important part of condensation theory—the calculation of the water droplet growth model in the transition zone—is not ideal; thus, it is necessary ...
Xu Han, Zhonghe Han, Wei Zeng, Jiangbo Qian, Zhi Wang   +4 more
doaj   +1 more source

Estimation of the Filling Distribution and Height Levels Inside an Insulated Pressure Vessel by Guided Elastic Wave Attenuation Tomography

Sensors, 2020
The operation efficiency and safety of pressure vessels in the oil and gas industry profits from an accurate knowledge about the inner filling distribution.
Robert Neubeck, Mareike Stephan, Tobias Gaul, Bianca Weihnacht, Lars Schubert, Arne Ulrik Bindingsbø, Jan-Magnus Østvik   +6 more
doaj   +1 more source

Acoustic Emission Monitoring of Fatigue Crack Growth in Mooring Chains

Applied Sciences, 2019
Offshore installations are subject to perpetual fatigue loading and are usually very hard to inspect. Close visual inspection from the turret is usually too hazardous for divers and is not possible with remotely operated vehicles (ROVs) because of the ...
Ángela Angulo, Jialin Tang, Ali Khadimallah, Slim Soua, Cristinel Mares, Tat-Hean Gan   +5 more
doaj   +1 more source

An Improved Analysis Method for Organic Rankine Cycles Based on Radial-Inflow Turbine Efficiency Prediction

Applied Sciences, 2018
The organic Rankine cycle (ORC) has been demonstrated to be an effective method for converting low-grade heat energy into electricity. This paper proposes an improved analysis method for the ORC system.
Peng Li, Zhonghe Han, Xiaoqiang Jia, Zhongkai Mei, Xu Han, Zhi Wang   +5 more
doaj   +1 more source

Condition Monitoring with Incomplete Observations

, 2014
We introduce an approach for predicting the behaviour of a machine during a production cycle. Typical data analysis methods assume that continuous behaviour is (fully) observed. This assumption is unrealistic as monitored machines are often interrupted and restarted at irregular points in time.
Vlasselaer, Jonas, Meert, Wannes, Langone, Rocco, De Raedt, Luc   +3 more
openaire   +1 more source

Modelling and experimental study of laser-assisted milling of fibre reinforced SiC/Ti-6Al-4V metal matrix composite

Materials & Design
Metal matrix composites (MMCs) offer unique advantageous mechanical properties by strengthening a ductile metal matrix with a ceramic reinforcement (e.g., Ti6Al-4 V/SiCf).
Omkar Mypati, Jeriel Panzer, Jose A. Robles-Linares, Shusong Zan, Zhirong Liao, Dragos Axinte   +5 more
doaj   +1 more source

Numerical simulation study of novel air-cooled condenser with lateral air supply

Case Studies in Thermal Engineering, 2019
Uneven distribution of internal temperature and air flow field are considered to be the essential defects of the Λ-frame air-cooled condenser (ΛACC) in a power plant.
Yu Zhou, You-liang Cheng, Ning Zhang, Hong-bo Shi   +3 more
doaj   +1 more source

Study on Outlet Temperature Control of External Receiver for Solar Power Tower

Energies, 2021
Due to the change of direct normal irradiance (DNI) and the change of output power load, the receiver of the solar tower is in an unstable state in the actual operation. In this paper, a 100 MW external cylindric receiver is designed and modelled.
Qiang Zhang, Kaijun Jiang, Yanqiang Kong, Jiangbo Wu, Xiaoze Du   +4 more
doaj   +1 more source

Evaluation of the Homogeneity of Geochemical Reference Materials by Wavelength-Dispersive X-Ray Fluorescence Spectrometry Using 0.1 g Fusion Samples

Journal of Chemistry
Good homogeneity is a critical guarantee for the accuracy of certified reference material values. X-ray fluorescence spectrometry (XRF) is widely used for the homogeneity testing of geochemical reference materials due to its simple sample preparation and
Hongkun Zhao, Qishen Chen, Yaxuan Liu, Yanfei Zhang, Qiang Li, Zhenqing Li, Kun Wang, Qi Yu   +7 more
doaj   +1 more source