检索结果-内蒙古大学图书馆

Experimental study on enrichment of low concentration coal bed methane with solar energy

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2015年第12期36卷 2637-2640页

作者： Yu, Hao-Tian Li, Na Zhou, Qu-Lan State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China

A large number of low concentration methane gas is emitted directly into the atmosphere during the coal production, resulting in a serious waste of energy and the greenhouse effect. Aiming at the shortcomings of conventional coal mine methane enrichment technology existed, the papar presented separation and enrichment coal mine methane with the Soret effect. The theoretical analysis proposed the main parameters of the enrichment process is the initial methane concentrations and the temperature gradient. The effect law of these parameters is studied by experiments and numerical simulations. © 2015, Science Press. All right reserved.

关键词： Coal

来源：评论

学校读者我要写书评

暂无评论

Unstructured grid based volume-of-fluid method

引用

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 2010年第9期44卷 99-103页

作者： Huang, Meng Wu, Lilong Chen, Bin State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

A simple line interface calculation-volume of fluid(SLIC-VOF) interface reconstruction technology was developed on the basis of the triangular unstructured grid. For a cell containing the interface, a straight line segment parallel with one side of the triangle cell was set on the interface according to the volume fractions in the three neighbor cells. The volume flux of the fluid with the assigned phase was determined by the geometry relation between the interface line and the volume flux on each side. Three tests were performed to verify the feasibility of the present unstructured SLIC-VOF interface reconstruction method, including an advection test of a right-angled triangle, the Zalesak slotted disk rotation test, and a single-vortex shearing flow test. The results show that the accuracy of the present method for the unstructured grid with 7600 cells is comparative with that of the conventional SLIC-VOF method for the structured grid with 6400 cells after the interface restoration in the reversed velocity field.

关键词： Cells

来源：评论

学校读者我要写书评

暂无评论

Deformation and Motion of Compound Droplet Adhering to Wall

引用

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2017年第12期38卷 2636-2640页

作者： Shang, Xing-Long Bai, Bo-Feng State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China

The compound droplet will exhibits much more complex behavior when it adheres to a wall under flow. Studying the influence of related parameter plays an important role in the manipulation of the compound droplet. In this paper, a three-dimensional numerical method involving the moving contact line problem is developed by integrating the generalized Navier boundary condition into the front-tracking method. The proposed method is applied to study the effects of the capillary number of inner and outer interface and the volume of inner droplet on the deformation and motion of the compound droplet adhering to the wall with considering the contact angle hysteresis effect. It found that the compound droplet is more like to be detached or pinched-off by the flow when the capillary number of outer interface and the volume of inner droplet are large and the capillary number of inner interface is small. key words © 2017, Science Press. All right reserved.

关键词： Deformation

来源：评论

学校读者我要写书评

暂无评论

Technology and mechanism of water scale removal by electrochemical method

引用

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 2009年第5期43卷 104-108页

作者： Xu, Hao Yan, Wei Tang, Chengli State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

The scale inhibition and removal processes by electronic water treatment were investigated in this study. The results show that the treatment of scale inhibition with 7.0V can be used first for the water with the hardness over 300 mgL-1(CaCO3), and then the treatment of scale removal with 5.0V can be applied when the water hardness decreases to less than 130 mgL-1(CaCO3). With the present energy-saving approach, more than 90 percent of the scale ions can be removed after treatment and no obvious scale will decompose on the surface of the heat exchanger. The SEM figures depict that the crystal morphology of scale is affected by the electronic water treatment. The crystal morphology of scale with and without the electronic water treatment is calcite and aragonite, respectively.

关键词： Calcite

来源：评论

学校读者我要写书评

暂无评论

Rheological characteristics of CTAC aqueous solutions under the combined effects of shearing and temperature

引用

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2014年第2期35卷 278-281页

作者： Xu, Na Wei, Jin-Jia State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

The rheological properties of CTAC/NaSal aqueous solutions (NaSal had same molarity with CTAC.) with different concentrations were experimentally investigated at different temperatures ranging from 10°C to 70°C and different shear rates from 1 s-1 to 300 s-1. There were a critical shear rate and a critical temperature for all measured surfactant aqueous solutions with mass concentrations ranging from 0.001% to 0.015%. The effects of temperature and shearing on viscosity properties of surfactant solution varied with the concentration. Rheological characteristics of viscosity showed complex variations under the combined effects of temperatures and shearing even for the solutions with same concentration. Surfactant solution with relatively high concentration thickened for the second time when suffering from strong shearing and high temperature.

关键词： Temperature

来源：评论

学校读者我要写书评

暂无评论

Modulating conductivity type of cuprous oxide（Cu2O） films on copper foil in aqueous solution by comproportionation

引用

Journal of Materials Science & Technology 2019年第8期35卷 1570-1577页

作者： Changwei Tang Xiaohui Ning Jian Li Hui-Lin Guo Ying Yang Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of EducationCollege of Chemistry & Materials ScienceNorthwest UniversityXi'an 710127 China National Demonstration Center for Experimental Chemistry Education Northwest UniversityXi'an 710127 China International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049 China

Cuprous oxide(Cu2O)is an attractive material for photoelectrochemical(PEC)hydrogen production or photovoltaic application,because of its appropriate band gap,low material cost and *** this paper,Cu2O films were obtained by comproportionation in acid cupric sulfate solutions with varying concentrations of potassium *** and electrochemical experiments,such as zero-bias photocurrent responses,voltammograms,and Mott-Schottky measurements,show that the Cu2O films grown in low(≤0.75 mol dm^–3)and high(≥1.00 mol dm^–3)nitrate ion concentrations presented n-type and p-type conductivity,*** circuit potential and polarization behavior were monitored to investigate the mechanism of modulating conductivity *** ions consume protons in the plating solution during comproportionation with different concentrations of nitrate ions creating different pH at the Cu2O/solution *** gradient leads to the transformation of Cu2Ofilms conductivity changing from n-type to p-type with increasing the concentration of nitrate ions in the plating *** method could be used to fabricate homojunction electrode on metal substrate for PEC hydrogen production or photoelectric application.

关键词： Cuprous oxide(Cu2O) Comproportionation Semiconductor films Tuning conductivity Photoelectrochemical cell

来源：评论

学校读者我要写书评

暂无评论

Numerical simulation of interaction between elliptic rings by discrete vortex method

引用

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2009年第7期30卷 1149-1151页

作者： Wang, Zhi-Wei Chen, Bin Guo, Lie-Jin State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

In present paper a three dimensional discrete vortex filament method is proposed to simulate unsteady incompressible vortical flows, through which the interaction of two coaxial vortex rings was studied. First the process of head-on collision of two circular rings was reproduced and compared with experimental result. The good agreement between numerical work and experiment verified our model. Then the motion of single elliptic ring was studied and a fit expression was given, through which the axis-switching period of single elliptic ring can be calculate effectively. At last the head-on collision and leapfrogging process of two coaxial elliptic rings was studied respectively. For the case of head-on collision of two elliptic rings, the shape of new generated ring was similar but larger than initial elliptic ring. While for case of two elliptic rings moving in same direction, the axis-switching process of elliptic ring is accompanied with the leapfrogging process.

关键词： Vortex flow

来源：评论

学校读者我要写书评

暂无评论

CAPACITY OPTIMIZATION OF ADVANCED ENERGY STORAGE TECHNOLOGIES FOR PEAK SHAVING AND FREQUENCY REGULATION BASED ON ECONOMIC AND CARBON-MITIGATION CO-BENEFIT 37

CAPACITY OPTIMIZATION OF ADVANCED ENERGY STORAGE TECHNOLOGIE...

引用

37th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2024

作者： Nie, Lu Li, Yanxin Gan, You Han, Xiaoqu Wang, Tong Yan, Junjie State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an China Huadian Electric Power Research Institute Co. Ltd. Beijing China

ISBN: (纸本)9798331307660

With the rapid scale-up in popularity of renewable energy sources, the new power system is suffering from enhanced *** order to improve flexibility of new power system and mitigate carbon emission, the integration of thermal power plants with energy storage technologies (ESTs) has gradually become a promising *** a key support for the development of new power system, it is of great significance to investigate the capacity optimization of advanced ***, there was a lack of study related to the capacity optimization of ESTs and the combination revenue patterns of ESTs were seldom *** the present work, a capacity optimization model was established for ESTs operating in combination with thermal power plants on the generating side, including lithium iron phosphate battery (LIPB), vanadium redox flow battery (VRFB), compressed air energy storage (CAES), supercapacitors (SC), and flywheel (FE) with the goal of maximizing the ***, VRFB, and CAES energy storage systems were investigated in the peak shaving (PS) *** co-benefit of ESTs was significant, 30.7-43.2 $/MWh, internal rate of return (IRR) was 12%-20%, and payback period (PP) was 6-11 years when the ratio of ESTs allocation (EAR) for thermal power plants was 2.50%-5.52%.LIPB, VRFB, CAES, SC, and FE were investigated in the frequency regulation (FR) *** co-benefit of ESTs was 51.9-329.3 $/MWh, IRR was 20%-35%, and PP was 3-7 years when the EAR was 0.24%-5.65%.The contribution of carbon mitigation benefit to co-benefit for different ESTs varied substantially, ranging from 6.46% to 82.75%.The ESTs not only offered ancillary service, but also other services when it operated as an independent shared energy storage.A new combination revenue pattern was proposed, under which revenue increased by 35%-55% compared to that of existing *** analysis was performed, in which the cost of energy storage, carbon tax, peak-valley spread, and comprehensi

关键词： flow batteries

来源：评论

学校读者我要写书评

暂无评论

Enhanced flow boiling heat transfer of FC-72 on micro-pin-finned silicon surfaces

引用

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2009年第8期30卷 1324-1326页

作者： Ma, Ai-Xiang Wei, Jin-Jia Yuan, Min-Zhe Fang, Jia-Bin State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 China

For efficiently cooling electronic components, the flow boiling heat transfer performance of FC-72 on micro-pin-finned silicon chips were studied. Two kinds of micro-pin-fins were used, which have the same fin thickness of 30m but different fin heights of 60 and 120m, respectively. The boiling heat transfer performance was much better for the micro-pin-fined surfaces than that for a smooth surface, and increased with increasing fin height. The critical heat flux increased with fluid velocity and subcooling, and the wall temperatures at the critical heat flux for micro-pin-finned chips were less than the upper temperature limit for the normal operation of electronic components, 85C.

关键词： Heat flux

来源：评论

学校读者我要写书评

暂无评论

Effects of the turbulence and drag force on heat transfer characteristics in supercritical water fluidized bed

引用

Kung Cheng Je Wu Li Hsueh Pao/Journal of engineering Thermophysics 2014年第12期35卷 2437-2441页

作者： Lü, You-Jun Dong, Xu-Bin Zhang, Tian-Ning State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an710049 China

The Eulerian two-fluid model based on Kinetic Theory of Granular flow was used to investigate the effects of the turbulence and drag force on heat transfer characteristics in supercritical water fluidized bed in this paper. Three drag models including Gidaspow, Syamlal-O'Brien and Wen-Yu drag models, and four turbulence models that are three high Renolds number turbulence model: standard κ - Ε, RNG κ - Ε, realizable κ - Ε and a low Renolds number turbulence model, are adopted. The results show that the Gidaspow drag model is the most proper drag model in SCW fluidized bed among three models employed. As for the four turbulence models, the bed-to-wall heat transfer coefficients simulated with the three high Renolds number turbulence models are in a good consistency, and are all larger than that simulated with the low Renolds number turbulence model. RNG κ- Ε turbulence model is the most proper one for the simulation of heat transfer characteristics in SCW fluidized bed with comprehensive considerations. © 2014, Science Press. All right reserved.

关键词： Fluidized beds

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：