中国科学院机构知识库网格系统: 检索

Numerical Study on the Influence of Well Layout on Electricity Generation Performance of Enhanced Geothermal Systems 期刊论文 OAI收割
PROCESSES, 2021, 卷号: 9, 期号: 8, 页码: 18
作者: Zeng, Yuchao; Sun, Fangdi; Zhai, Haizhen

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收藏 | 浏览/下载：36/0 | 提交时间：2021/10/27

energy efficiency horizontal well enhanced geothermal system well layout vertical well

Numerical simulation of electricity generation potential from fractured granite reservoir through vertical wells at Yangbajing geothermal field 期刊论文 OAI收割
energy, 2016, 卷号: 103, 页码: 290-304
作者: Zeng, Yu-chao; Zhan, Jie-min; Wu, Neng-you; Luo, Ying-ying; Cai, Wen-hao

收藏 | 浏览/下载：38/0 | 提交时间：2016/12/05

Vertical well Yangbajing geothermal field Fractured granite reservoir Heat production Electric power

Effect of horizontal and vertical well patterns on methane hydrate dissociation behaviors in pilot-scale hydrate simulator 期刊论文 OAI收割
applied energy, 2015, 卷号: 145, 页码: 69-79
作者: Feng, Jing-Chun; Wang, Yi; Li, Xiao-Sen; Li, Gang; Zhang, Yu

收藏 | 浏览/下载：33/0 | 提交时间：2016/01/07

Hydrate dissociation Vertical well Horizontal well Depressurization Thermal stimulation

Structural amelioration of 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China
作者: Liu Y.; Liu Y.; Wang L.; Wang L.; Wang L.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) has an important application in laser display. We constructed and optimized a 920 nm OPS-VECSEL with active region of In0.09Ga0.91As quantum well (QW) system pumped by 808 nm laser diode module. By the finite element method self-consistent solutions of the semiconductor electronic and optical equations are realized to calculate the characteristics parameters of OPS-VECSEL. The performances of device especially the mode the threshold and the optical-optical translation efficiency were analyzed by dealing with different number of QWs (1 2 and 3) in one period QW depth barrier width the component and dimension of the non-absorption layer. We chose an improved structure of them. On this basis we ameliorated the number of QW periods and the simulation showed that in order to obtain high performance device the choice of the number of QW periods must be cautious. (2013) Trans Tech Publications Switzerland.

INVESTIGATION OF THE RECOVERY EFFICIENCY OF METHANE USING VERTICAL WELLS OPERATING IN LANDFILLS 期刊论文 OAI收割
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL, 2013, 卷号: 12, 期号: 9, 页码: 1855-1859
作者: Xue, Qiang; Liu, Lei; Chen, Yi-jun; Wang, Jing

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收藏 | 浏览/下载：25/0 | 提交时间：2018/06/05

collection system landfill methane recovery efficiency vertical well

Experimental study on gas production from methane hydrate in porous media by huff and puff method in Pilot-Scale Hydrate Simulator 期刊论文 OAI收割
fuel, 2012, 卷号: 94, 期号: 1, 页码: 486-494
作者: Li, Xiao-Sen; Yang, Bo; Li, Gang; Li, Bo; Zhang, Yu

收藏 | 浏览/下载：15/0 | 提交时间：2016/10/28

Hydrate dissociation Porous media Three-dimension Huff and puff Vertical well

Production behavior of methane hydrate in porous media using huff and puff method in a novel three-dimensional simulator 期刊论文 OAI收割
energy, 2011, 卷号: 36, 期号: 5, 页码: 3170-3178
作者: Li, Gang; Li, Xiao-Sen; Wang, Yi; Zhang, Yu

收藏 | 浏览/下载：20/0 | 提交时间：2016/10/27

Hydrate dissociation Porous media Three-dimension Huff and puff Vertical well

Influence of spatial temperature distribution on high accuracy interferometric metrology (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Yang H.; Zhang J.; Zhang J.; Zhang J.; Yan F.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

We calculate the influence of temperature change on the refractive index of air establish a model of air temperature distribution and analyze the effect of different temperature distribution on the high accuracy interferometric metrology. First a revised Edlen formula is employed to acquire the relation between temperature and refractive index of air followed by introducing the fixed temperature gradient distribution among the spatial grid within the optical cavity between the reference flat and the test flat of the Fizeau interferometer accompanied by a temperature change random function within each grid. Finally all the rays through the air layer with different incident angles are traced by Matlab program in order to obtain the final output position angle and OPD for each ray. The influence of different temperature distribution and the length of the optical cavity in on the testing accuracy can be analyzed through the RMS value that results from repeatable rays tracing. As a result the horizontal distribution (vertical to optical axis) has a large effect on the testing accuracy. Thus to realize the high accuracy figure metrology the horizontal distribution of temperature must be rigorously controlled as well as to shorten the length of the optical cavity to a large extent. The results from our simulation are of great significant for the accuracy analysis of interferometric testing and the research of manufacturing a interferometer. 2010 Copyright SPIE - The International Society for Optical Engineering.

High power vertical cavity surface-emitting laser with high reliability (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
Changling Y.; Guoguang L.; Chunfeng H.; Li Q.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

High-power vertical-cavity surface-emitting lasers with InGaAs/GaAs quantum well active gain region are investigated. By using AlAs oxidation technology the devices have been fabricated in experiment and the characteristics of the device are carried out at room temperature. The 300m-diameter VCSELs have the maximum room temperature continuous wave (CW) optical output power of about 1.1W and the threshold current of the device is about 0.46A. The life test of the device is carried out in constant current mode. The life test of 300-m diameter lasers shows that the average lifetime is about 1800h at 80C. The device degradation mechanism is also discussed in detail.

High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
作者: Zhang Y.; Liu Y.; Liu Y.; Liu Y.; Qin L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.