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Research status of heat storage technology 蓄热技术的研究现状
Pub Date : 2023-04-10 DOI: 10.54097/ije.v2i2.7381
Junyi Fang
With the massive consumption of fossil fuels, the world is gradually facing the problem of energy exhaustion and environmental pollution. Energy plays an intuitive and important role in today's human development and global pattern. The geopolitical crisis caused by this is becoming increasingly fierce and the world energy price wave. In order to seek a more stable source of energy to get rid of the limitations of fossil energy, new energy becomes a new direction of development. In theory, only 23% of the Earth's potential renewable energy (solar, tidal and wind) could be converted to meet today's energy needs, but due to time and geographical factors, utilization is still low. Therefore, the development of heat energy storage technology is of great significance to alleviate energy pressure and promote sustainable development of social economy. In recent years, heat energy storage technology has become one of the most attractive heat energy utilization technologies and has attracted wide attention. At present, it has become a research hotspot worldwide. This paper summarizes the latest research status of heat storage technology in recent years, including the new progress of some technologies. Different heat storage technologies are suitable for different environment and use background, and different energy storage technologies are compared, so as to facilitate the analysis and research of new energy heat storage research under different circumstances.
随着化石燃料的大量消耗,世界正逐渐面临着能源枯竭和环境污染的问题。能源在当今人类发展和全球格局中发挥着直观而重要的作用。由此引发的地缘政治危机和世界能源价格波动正愈演愈烈。为了寻求更稳定的能源,摆脱化石能源的局限,新能源成为新的发展方向。理论上,地球上只有23%的潜在可再生能源(太阳能、潮汐能和风能)可以转化为满足当今的能源需求,但由于时间和地理因素,利用率仍然很低。因此,发展蓄热技术对缓解能源压力、促进社会经济可持续发展具有重要意义。近年来,蓄热技术已成为最具吸引力的热能利用技术之一,受到了广泛关注。目前,它已成为世界范围内的研究热点。本文综述了近年来储热技术的最新研究现状,包括一些技术的新进展。不同的蓄热技术适用于不同的环境和使用背景,并对不同的储能技术进行比较,便于对不同情况下的新能源蓄热研究进行分析和研究。
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引用次数: 0
Sedimentary microfacies characteristics within the high-resolution sequence framework of the Fuyu oil layer in the New North region 新北地区扶余油层高分辨率层序格架内沉积微相特征
Pub Date : 2023-04-10 DOI: 10.54097/ije.v2i2.7377
XingYu Fu
The Xinbei Oilfield has gone through decades of exploration and development, and lithological oil and gas reservoirs with stronger concealment are currently the focus of research. It is urgent to implement the sedimentary microfacies and sand body distribution characteristics of the Fuyu oil layer in the Xinbei area, providing a new theoretical basis for predicting the "sweet spot" of facies control in the area. Using core, logging, and logging data from the study area, a high-resolution sequence stratigraphic framework of the Fuyu oil layer was established. The distribution characteristics of sedimentary microfacies within the sequence framework were analyzed. The study showed that the Fuyu oil layer in the study area was divided into one long-term base level cycle of rising half cycle, four medium-term base level cycles, and 13 short-term base level cycles; In the area, river controlled shallow water delta plains and front sediments are developed, and a total of 10 types of sedimentary microfacies have been identified. Among them, the (underwater) distributary channel sand body, as the dominant reservoir sand body, extends along the southwest to northeast direction. As the A/S value increases, four stacking styles are developed vertically, including vertical shear stacking, staggered shear stacking, horizontal shear stacking, and isolated distribution. In the horizontal, the locally developed wide channel sand body composite zone gradually transitions into a single channel.
新北油田经过几十年的勘探开发,隐蔽性较强的岩性油气藏是目前研究的重点。迫切需要对新北地区扶余油层沉积微相及砂体分布特征进行研究,为预测该区相控“甜点”提供新的理论依据。利用研究区岩心、测井、测井资料,建立了扶余油层的高分辨率层序地层格架。分析了层序格架内沉积微相的分布特征。研究表明,扶余油层划分为1个上升半旋回的长期基准面旋回、4个中期基准面旋回和13个短期基准面旋回;区内发育河流控制的浅水三角洲平原和前缘沉积,共识别出10种沉积微相。其中(水下)分流河道砂体为优势储层砂体,沿西南向东北方向延伸。随着A/S值的增大,在垂直方向上发展出垂直剪切堆积、交错剪切堆积、水平剪切堆积和孤立分布4种堆积方式。在水平方向上,局部发育的宽河道砂体复合带逐渐过渡为单一河道砂体。
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引用次数: 0
Safety assessment of electromagnetic radiation from mobile phone antennas to the human head 移动电话天线对人体头部电磁辐射的安全性评估
Pub Date : 2023-04-10 DOI: 10.54097/ije.v2i2.7320
Miao Yi, Yaodan Chi, Bo Wu, Yang Zhao, Tianbo Su, Yunrui Qi
In order to explore the influence of mobile phone antenna electromagnetic radiation on the human head, a simulation system including a multi-antenna mobile phone model and a human head model was constructed using COMSOL simulation software. The specific absorption rate (SAR) of mobile phone electromagnetic radiation on the human head is calculated by finite element method at two different operating frequencies. The results show that the SAR values calculated by all the simulations are lower than the limits stipulated by the International Commission on Non-Ionizing Radiation Protection (ICNIRP), indicating that the electromagnetic radiation generated by the mobile phone antenna on the human head is safe.
为了探讨手机天线电磁辐射对人体头部的影响,利用COMSOL仿真软件构建了包含多天线手机模型和人体头部模型的仿真系统。采用有限元法计算了两种不同工作频率下手机电磁辐射对人体头部的比吸收率(SAR)。结果表明,所有模拟计算的SAR值均低于国际非电离辐射防护委员会(ICNIRP)规定的限值,表明手机天线对人体头部产生的电磁辐射是安全的。
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引用次数: 0
Research on uplift mechanism of screw pile 螺旋桩抗拔机理研究
Pub Date : 2023-04-10 DOI: 10.54097/ije.v2i2.7321
Yunchen Zhang, Chao Shi, Chengjun Xu, Rong-bing Qin, Hanxin Ye
This paper uses numerical simulation software to study the bearing characteristics of screw pile with pitch after installation. The selected soil is single layer sandy soil, and the blade is buried in deep burial mode. Based on the numerical simulation results, the vertical bearing characteristics of single spiral pile and ordinary bladeless pile are compared, and the excellent compression and pull-out characteristics of spiral pile are revealed. Then, the influences of different pitch sizes, blade diameters, tilt angles, blade numbers and blade spacing on spiral single pile were compared and analyzed. The results show that single screw pile has higher bearing capacity and bearing efficiency. The vertical bearing capacity of single inclined screw pile has no obvious improvement compared with that of straight pile.
本文采用数值模拟软件对螺距螺旋桩安装后的承载特性进行了研究。所选土壤为单层沙土,叶片采用深埋方式埋置。基于数值模拟结果,对比了单螺旋桩与普通无叶片桩的竖向承载特性,揭示了螺旋桩优良的抗拔特性。对比分析了不同节距尺寸、叶片直径、倾角、叶片数和叶片间距对螺旋单桩的影响。结果表明,单螺杆桩具有较高的承载力和承载效率。单斜螺旋桩的竖向承载力与直桩相比无明显提高。
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引用次数: 0
Study on the architecture of tidal controlled estuarine complex sand bodies in M oilfield, Oriente Basin, Ecuador: A case study of LU Formation 厄瓜多尔Oriente盆地M油田潮汐控制河口复杂砂体构型研究——以LU组为例
Pub Date : 2023-04-10 DOI: 10.54097/ije.v2i2.7382
Guoqing Yang
The M oilfield in Oriente Basin, Ecuador has the characteristics of large well spacing and few Wells, and it is difficult to determine the lateral distribution range of sand bodies between Wells. Based on the well logging and seismic data, this paper discusses the sand body configuration characteristics of the Upper Cretaceous tidal controlled estuary reservoir in Oriente Basin in detail. The vertical and lateral contact relationships of reservoir are studied by single well identification, well point phasing, well profile analysis, and fine boundary characterization of seismic simulation, etc. Combined with microfacies types, the vertical overlapping relationships of 3 kinds of 7 types of sand bodies and lateral distribution relationships of 3 kinds of 5 types of sand bodies are summarized. It provides ideas for the study of this kind of sedimentary environment configuration and lays a foundation for the next study of remaining oil distribution law.
厄瓜多尔Oriente盆地M油田具有井距大、井数少的特点,井间砂体横向分布范围难以确定。在测井和地震资料的基础上,详细讨论了东方盆地上白垩统潮控河口储层砂体形态特征。通过单井识别、井点相位、井剖面分析、地震模拟精细边界刻画等研究了储层的垂向和侧向接触关系。结合微相类型,总结了7类砂体中3类砂体的垂向叠加关系和5类砂体中3类砂体的横向分布关系。为研究此类沉积环境构型提供了思路,为下一步剩余油分布规律的研究奠定了基础。
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引用次数: 0
Analysis and Research on the Current Situation of Energy Use in Rural Areas of Tibet and Sichuan 西藏、四川农村能源利用现状分析与研究
Pub Date : 2023-03-30 DOI: 10.54097/ije.v2i2.6868
Linyu Wan, Chengpeng Liu, Luosongzeren, Yue Liu, W. Wang, Sangyonglamu, Xiaoyu Zhang
This article has conducted relevant surveys on the current situation of energy use in rural areas of Linzhi City, Tibet, and Heishui County, Sichuan. The survey results show that in terms of energy sources, fuelwood accounts for the largest proportion in rural areas of Linzhi City, Tibet, accounting for 72.2% to 74.7% of energy use. Moreover, the proportion of renewable energy in rural areas is 4.5 times that of pastoral areas, and 18 times that of resource rich areas. In rural areas of Heishui County, Sichuan Province, dried cow and sheep dung is the main energy source, accounting for 79.8% of the total energy consumption. The utilization rate of renewable energy in daily life is relatively low, only 0.3%.
本文对西藏林芝市和四川黑水县农村地区的能源利用现状进行了相关调查。调查结果显示,在能源来源方面,西藏林芝市农村以薪材占比最大,占能源使用量的72.2% ~ 74.7%。农村可再生能源比重是牧区的4.5倍,是资源富集区的18倍。在四川省黑水县农村,牛粪和羊粪是主要的能源来源,占总能耗的79.8%。可再生能源在日常生活中的利用率相对较低,仅为0.3%。
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引用次数: 0
Kinetic fitting of methane adsorption rate and its influencing factors 甲烷吸附速率及其影响因素的动力学拟合
Pub Date : 2023-03-28 DOI: 10.54097/ije.v2i2.6192
Zhen Yu
In order to reveal the mechanism of the influence of coal matrix pores on methane adsorption rate, based on the high-pressure methane isothermal adsorption experiment of coal samples with different pore structures, the desorption law of methane in coal and its internal relationship with pore structure were studied by analyzing the change of methane adsorption amount at a single pressure point over time. Bangham kinetic model was used to fit the adsorption process, and constants representing the adsorption rate were obtained. The following understandings were obtained: (1) With the decrease of particle size, the adsorption equilibrium time is shorter, small particle size samples often have more complex pore structure, which makes the adsorption reaction between gas-solid interface more active, but the particle size itself cannot increase or reduce the size of the accumulated adsorption amount at the equilibrium, it only changes the length of time required to reach the adsorption equilibrium. (2) With the increase of the mesh number, the adsorption rate also increases, but the higher the coal rank, the greater the adsorption rate growth rate.
为了揭示煤基质孔隙对甲烷吸附速率的影响机理,基于不同孔隙结构煤样的高压甲烷等温吸附实验,通过分析单压力点甲烷吸附量随时间的变化,研究了煤中甲烷的解吸规律及其与孔隙结构的内在关系。采用Bangham动力学模型拟合吸附过程,得到表征吸附速率的常数。得到以下认识:(1)随着粒径的减小,吸附平衡时间更短,小粒径样品往往具有更复杂的孔隙结构,这使得气固界面之间的吸附反应更加活跃,但粒径本身并不能增加或减少平衡处累积吸附量的大小,它只改变了达到吸附平衡所需的时间长度。(2)随着目数的增加,吸附速率也随之增加,但煤阶越高,吸附速率增长率越大。
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引用次数: 0
Application of audio frequency electric perspective technology in mine water disaster prevention 音频电透视技术在矿井水害防治中的应用
Pub Date : 2023-03-28 DOI: 10.54097/ije.v2i2.6193
Fangyan Guo
Based on the geophysical characteristics of the top and floor strata of No.8 coal seam in Sitai Mine, through the reasonable site arrangement of measuring points and rigorous indoor data processing and analysis, the use of audio electrical perspective technology to detect the top and floor low resistivity abnormal area in 80207 working face. According to the detection results, combined with the existing hydrogeological data of Sitai mine, the relative water-bearing area and the key water control area of the working face are delineated. The results show that the audio frequency electric perspective technology can provide a basis for the prevention and control of mine water disaster conveniently and effectively.
根据四台矿8号煤层顶底板的地球物理特征,通过合理的测点布置和严格的室内数据处理分析,采用音频电透视技术对80207工作面顶底板低阻异常区进行探测。根据探测结果,结合四台矿现有水文地质资料,圈定了工作面相对含水区域和重点控水区域。结果表明,音频电透视技术可为矿井水害的防治提供便捷、有效的依据。
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引用次数: 0
Research of Geothermal Resources on Hot Dry Rock in North Songliao Basin of China 松辽盆地北部干热岩地热资源研究
Pub Date : 2023-03-28 DOI: 10.54097/ije.v2i2.6190
Duo Xiao, H. Wei, S. Shi, Huanlai Zhu, Senlin Gan, Xiaoxiong Wu, W. Feng
With abundant oil and gas as well as geothermal resources, Songliao Basin is a famous large continental sedimentary basin in China. So far, the research of geothermal resources in North Songliao Basin has mainly concentrated in the shallow layers where low-temperature geothermal resource is mainly developed. However, the research of deep geothermal resource in high-temperature hot dry rock is still in a blank state. Based on the Songliao Basin exploration and research achievements as well as oil exploration well data, this paper further improves geothermal resource exploration and development theories of North Songliao Basin by researching geothermal resources in high-temperature hot dry rock. Hot dry rock distribution is relatively concentrated in the North Songliao Basin, mainly in the central, southern and southeastern part of the study area, where the depth of 150 ℃ isothermal surfaces substantially less than 5km is conducive to the development of hot dry rocks. Studies have shown that two high value areas of terrestrial heat flow in the North Songliao Basin are respectively located in the southern part of the central depression area as well as the junction of three first-order tectonic belts including central depression, southeast and northeast uplift areas, where geothermal resource potential of hot dry rock is great. By using enhanced geothermal system, mining hot dry rock is feasible. This study has some guidance and reference for the development and utilization of deep geothermal resources in hot dry rock of the North Songliao Basin.
松辽盆地拥有丰富的油气和地热资源,是中国著名的大型陆相沉积盆地。迄今为止,松辽盆地北部的地热资源研究主要集中在以低温地热资源为主的浅层。然而,对高温干热岩深层地热资源的研究仍处于空白状态。本文在松辽盆地勘探研究成果和石油探井资料的基础上,通过对高温干热岩地热资源的研究,进一步完善了松辽盆地北部地热资源勘探开发理论。干热岩分布相对集中在松辽盆地北部,主要分布在研究区中部、南部和东南部,150℃等温面深度基本小于5km,有利于干热岩发育。研究表明,松辽盆地北部两个大地热流高值区分别位于中央坳陷区南部以及中央坳陷区、东南隆起区和东北隆起区三个一级构造带的结合部,热干岩地热资源潜力较大。利用增强型地热系统开采干热岩是可行的。该研究对松辽盆地北部干热岩深层地热资源的开发利用具有一定的指导和参考意义。
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引用次数: 0
Current measurement method based on integral reconstruction of magnetic rotation angle 基于磁旋转角积分重构的电流测量方法
Pub Date : 2023-03-03 DOI: 10.54097/ije.v2i1.5614
Huasheng Shui, Yufei Rong, Taiji Dong, Yu Sun, Wendi Yan
In view of the nonlinear limitation of the sine function on the magnetic rotation angle in the optical current sensor based on the light intensity detection mode, this paper proposes a current measurement method based on the integral reconstruction of the magnetic rotation angle, thus avoiding the large current measurement error caused by the approximate linear measurement of the magnetic rotation angle. In this method, the cosine term in the derivative of the sine signal containing the magnetic rotation angle is eliminated by the constant deformation of the trigonometric function, and then the magnetic rotation angle is reconstructed by integration. The experimental results show that within the current range of 0.20 Arms to 2.40 Arms, the measurement error of the current value of the integral reconstruction method is less than 1.30%, the measurement error is less than the approximate linear measurement method, and there is a good linear relationship between the magnetic rotation angle and the current, with a linearity of 99.987%.
针对基于光强检测模式的光电流传感器中正弦函数对磁转角的非线性限制,本文提出了一种基于磁转角积分重构的电流测量方法,从而避免了磁转角近似线性测量带来的较大电流测量误差。该方法通过三角函数的不断变形消除含有磁旋转角的正弦信号导数中的余弦项,然后通过积分重构磁旋转角。实验结果表明,在0.20臂~ 2.40臂的电流范围内,积分重构方法的电流值测量误差小于1.30%,测量误差小于近似线性测量方法,磁旋转角与电流之间存在良好的线性关系,线性度为99.987%。
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引用次数: 0
期刊
International journal of energy science
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