DEStech Transactions on Environment, Energy and Earth Science最新文献

{"title":"Design and Analysis of Different Storage Cargo Station Project","authors":"Jiaxing Fu, Zhiming Ma, Jiyang Li, Tong Wu","doi":"10.12783/DTEEES/PEEES2020/35459","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35459","url":null,"abstract":"This paper completed a program with a typical coal loading station analysis, coal systems, interior design by coal storage system loading stations will be expanded, it will be subject to the coal pit, different forms of storage bunker, coal storage shed, etc. specific technical parameters superior and its corresponding economic indicators combined standard to do a detailed comparison and determine the best technical and economic solutions Cargo station construction; focus on the application of matlab calculation program calculates the design reserves loading stations with coal shed aspect ratio, the relationship between the length of the curve values, verify the Cargo station design is reasonable to give a general rule of coal storage capacity design.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78953403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tagging Tone for Mandarin Pinyin Based on Sequence Labelling","authors":"Zhaopeng Qian, K. Xiao","doi":"10.12783/DTEEES/PEEES2020/35462","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35462","url":null,"abstract":"Generally, fundamental frequency (F0) is applied as the clue for tone recognition in normal speech. Tone recognition in whisper speech without F0 could be based on the temporal and spectral cues. However, the Mandarin Electro-Laryngeal (EL) speech with fixed F0 has no tone information. Therefore, the tone recognition of Mandarin EL speech is so difficult. And the researches about tone recognition for Mandarin EL speech is insufficient. In this paper, a new method labelling the tone for pinyin is proposed based on the context information to identify the tone of Mandarin speech without tone information. The experiment result shows that the precision, recall and the F value are all above 97% based on the test dataset. The amount of semantic information influences the performance of proposed method. If the amount of semantic information is little, the accuracy of tone labelling would be poor. The result shows that the proposed method has a good precision and robustness. The method can label the tone for pinyin without any tone information only based on the context information. The proposed method can label tones for tonal language, such as the Mandarin speech.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80185148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Temperature Control Strategy of Boiler Main Steam for Frequent Action of AGC Command in Power Grid","authors":"Ruicai Si, Wang Songhan, Liu Xiwen, Zhongyang Wang, L. Jia, Zhong-xu Dou, Zhou Chi","doi":"10.12783/DTEEES/PEEES2020/35465","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35465","url":null,"abstract":"Traditional PID is widely used in the main steam temperature control system of thermal power unit Cascade control. Although this control scheme is easy to be debugged on site, it is impossible to solve the problem of large fluctuation and over temperature of steam temperature only by adjusting PID parameters due to the characteristics of variable parameters, large inertia and large time delay of main steam temperature control system. Especially when the AGC command of power grid fluctuates frequently, the conventional control strategy is difficult to deal with, resulting in the change of main steam temperature regulation quality Poor, affecting unit economy and safety. In this paper, the sub PID set value adaptive control logic and desuperheating water injection logic to prevent the main steam temperature overshoot are used to solve the problem of the quality deterioration of the main steam temperature regulation under the frequent fluctuation of AGC instructions.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81447339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Improved Object Detection Method for Automatic Electrical Equipment Defect Detection","authors":"Rui Guo, Shaosheng Fan, Youming Li, Zhiyuan Liu, Kai Liu","doi":"10.12783/DTEEES/PEEES2020/35491","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35491","url":null,"abstract":"Employing computer vision and machine learning on equipment defect detection has become an important trend of electric power inspection. This paper presents a new electrical equipment default detection method based on improved YOLOv3. By combining abundant geometric measures, Complete IOU(CIOU) make the bounding box regression during NMS more accurate. Focal loss function, which focus on differentiate between easy and hard examples, is employed to deal with the class imbalance problem. Experiment results show that the proposed approach obtains competitive performance compared with state-of-the-art deep learning object detection methods.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79992440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization Algorithm Study of Operation Energy Consumption in Water Flooding System","authors":"Yongliang Ren, Shuwei He, Minzheng Jiang, Sheng Gao, K. Sun, Guopeng Zhang, Yan Wang, Ruijie Zhang","doi":"10.12783/DTEEES/PEEES2020/35500","DOIUrl":"https://doi.org/10.12783/DTEEES/PEEES2020/35500","url":null,"abstract":"Oilfield flooding is one of the methods which replenish energy to stratum, improve the recovery factor of oil exploitation in the development of oilfield. The energy consumption of water injection is also part of the totle energy consumption. Oilfield flooding is one of the methods which with the great mass oilfields that in China have entered the later development period, the cost of oil exploitation is rising, and the water injection in the same way. It is an effective way to reduce the cost of water injection by using computer technology to optimize operation control of oil field water injection system. Water injection system analyzed in this paper is suitable by combining multiple centrifugal pump and frequency converter in the composition of water injection station as the water system, optimization mathematical model is established for water injection system, using c++ optimization software is compiled, selects the improved constrained variable dimension method was used to solve the model, the optimization result is applied to a production plant of daqing oilfield water injection system. After adopting the optimized pumping measures, the system efficiency is increased by 1.8% when meeting the water injection requirements, and the operation cost is saved by about 10,000 RMB per day, which reduces the production cost of the oilfield.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82986603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reducing Environmental Impacts through a Smart Design of Microgrids: Life Cycle Assessment for AC and DC","authors":"Christina Kockel, Lars Nolting, Rafael Goldbeck, C. Wulf, R. D. Doncker, Aaron Praktiknjo","doi":"10.12783/DTEEES/ICEEE2019/35108","DOIUrl":"https://doi.org/10.12783/DTEEES/ICEEE2019/35108","url":null,"abstract":"Microgrids with integrated renewable energies show promising potentials in terms of reliable, efficient, and clean smart grid concepts. Further improvements are expected when such a microgrid is operated on a direct current instead of an alternating one. Our study aims to systemically analyze the environmental impacts of microgrids operating on ac and on dc using power distribution within office buildings as an example. For this purpose, a comparative and scalable life cycle assessment is conducted based on a technical bottom up analysis of differences between ac and dc microgrids. Particularly, our approach combines the assessment of required power electronic components on a micro-level using a generic grid model on a macro-level. The results indicate that the environmental impacts of employed power electronics can be substantially reduced when utilizing a microgrid operating on dc instead of ac.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74592775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"After the Sun: Energy Use in Blue v. Green Water for Agriculture","authors":"J. Kehl","doi":"10.22158/ees.v3n2p1","DOIUrl":"https://doi.org/10.22158/ees.v3n2p1","url":null,"abstract":"The purpose of this article is to highlight the difference in energy consumption between using blue water versus green water for agriculture in areas where water-intensive crops are grown in water-scarce regions. It focuses on water and energy consumption for greening the desert in United States, the world’s largest grain producer. The analysis is limited to the three largest crops by volume and value; corn, cotton, and wheat, which generate billions of dollars for the economy and use billions of gallons of water each day. The primary methodology is to use Geographic Information Systems (GIS) to visually represent the comparative amounts of blue water and green water used to grow water-intensive crops in water-scarce regions, by statistically mapping levels of water stress overlaid with the amounts of blue water versus green water used. It exposes where energy-intensive water practices are occurring due to a high dependence on blue water for irrigation in agriculture. The article concludes by discussing strategies to improve energy efficiency and reduce the vulnerabilities associated with overdependence on blue water such as high energy costs, low energy security, and susceptibility to aquifer reduction and ground water depletion.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"6 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75847676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Sawmill Industry on Ambient Air Quality: A Case Study of Ilorin Metropolis, Kwara State, Nigeria","authors":"Raimi Morufu Olalekan, A. Olalekan, Odipe Oluwaseun Emmanuel, T. K. Samson, A. Sunday, Ogunleye Temitope Jide","doi":"10.22158/ees.v3n1p1","DOIUrl":"https://doi.org/10.22158/ees.v3n1p1","url":null,"abstract":"Amid sawmill busy lives, air pollution is one of the greatest casualties of our time and has increased worldwide since 1990. Today, the history of air pollution in sawmills accounts for 93.32% of the total number of wood processing industries in Nigeria, it seems daunting, overwhelming and have positioned the country at a perilous crossroad. For emerging nations such as Nigeria with a population projected to hit 410.6 million humans by 2050 with up to 40-60 million people with mental disorders at the moment, consequently more than 40,000 deaths a year will be due to air pollution. 7 million deaths worldwide is attributed to air pollution with the number set to increase significantly in coming decades mostly through non-communicable diseases like lung cancer, stroke and chronic obstructive pulmonary disease but also through acute respiratory infections like pneumonia. Similarly, around 90% of all people breathe air contaminated with pollutants. In 2015, tobacco caused 7 million deaths, 1.2 million AIDS, 1.1 million cases of tuberculosis and 0.7 million of malaria, 19% of all cardiovascular deaths, 24% of all deaths due to ischaemic heart disease. 21% of stroke deaths, and 23% of deaths from lung cancer. Non-communicable diseases are responsible for 70% of deaths from air pollution and are a major cause of unexplained infections. In addition, air pollution seems to be significant but it is still not a determinant factor of the risk of neurodegenerative disorders in children and neurodegenerative diseases in adults. This study assessed ambient air quality in major sawmill sites in Ilorin Metropolis, Kwara State, Nigeria. Air pollution measurements were made using direct reading through automatic in situ gas monitors; Hand held mobile multi-gas monitor with model AS8900 (Combustible (LEL), and Oxygen (O2)), BLATN with model BR—Smart Series air quality monitor (PM10, Formaldehyde) and air quality multimeter with model B SIDE EET100 (Dust (PM2.5), VOC, Temperature and Relative Humidity). The results show that the mean concentrations of CO, O2 and other measured parameters such as Formaldehyde (HcHo) etc., are commonly lower and within acceptable range of National and International regulatory standards for air quality indices. There are however some exceptions such as mean concentrations of Volatile Organic Compounds (VOCs), PM2.5, PM10 and Combustible (LEL) respectively high when compared to National and International standards. This high value is attributed to the amount of pollutant present in the sawmills due to the input of influents it receives from activities of the sawmill. This is why there has been air pollution in Ilorin metropolis and were however, found to be polluted. Given the high cost of additional measures to lessen air pollution and the new perspectives suggesting that health effects can be observed at low concentrations, the health effects of air pollution should be of scientific and regulatory interest in coming years. In the absenc","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89954943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen Permeation Property and Hydrogen Embrittlement Susceptibility of Pipeline Steel with Oxide Film","authors":"Shouzhuang Li, Weiming Zhao, Yong Wang","doi":"10.12783/dteees/peems2019/33963","DOIUrl":"https://doi.org/10.12783/dteees/peems2019/33963","url":null,"abstract":"In this study, the oxide film on X80 steel was fabricated to decrease hydrogen embrittlement of pipeline steel. The microstructures and mechanical properties in 10MPa hydrogen gas and hydrogen permeation properties were investigated. The phase structure of oxide film was mainly composed of Fe2O3. With the increasing of oxidation temperature, surface oxygen content improves gradually. Oxide film plays an important role in resisting hydrogen penetrating. Hydrogen diffusion coefficient decreases from 38.81☓10-7cm2s-1 to 1.26☓10-7 cm2s-1 for oxidation at 450 ℃. The plastic deformation increases obviously after oxidation. HEI decreases from 40.96% to 11.61% for oxidation at 450 ℃.","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"105 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77286759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimized Least Square DOA Estimation Algorithm Based on Phase Interferometer Array","authors":"Shu-Huan Fu, Siyu Ju, Beihai Wei, Huiping Zhu","doi":"10.12783/dteees/peems2019/33980","DOIUrl":"https://doi.org/10.12783/dteees/peems2019/33980","url":null,"abstract":"Aiming at the complex process of phase interferometer ambiguity resolution and the strict requirement of baseline comparison, an optimized least square ambiguity resolution algorithm for multi-baseline phase interferometer is proposed. This algorithm is a backward-forward derivation method. First, phase matrix is generated by off-line calculation. Then verify the uniqueness condition of correctly ambiguity resolution, and the angle of arrival (AOA) is solved by criterion function. The algorithm uses the mean square operation instead of the time-consuming cosine function calculation. The algorithm can be applied to the complex array of interferometers and makes the test of the uniqueness condition simpler. Simulation experiments are carried out under the condition of one-dimensional linear array. The result show that the algorithm is effective and has high anti-noise performance. Introduction Phase interferometer is widely used in the measurement and control of direction of arrival (DOA) in passive location, and it is of great significance in DOA Location and tracking [1]. The phase interferometer has the advantages of high direction-finding accuracy, passive direction finding, simple internal structure and observation frequency bandwidth [2]. With the improvement of single satellite information processing ability, phase interferometer is widely used in passive location. The phase detection range of phase interferometer is (-π, π). When the length between two baselines exceeds half wavelength (λ/2), phase ambiguity will occur. Therefore, for single baseline phase interferometer, there is a contradiction between direction finding accuracy and maximum non ambiguity angle [3,4]. In reference [5], the long-short baseline method limits the length of the short baseline. In order to meet the requirement of wide-band direction finding of phase interferometer and ensure the realization of system physics, a method based on virtual baseline is proposed in reference [6,7]. The construction of virtual baseline is obtained by subtracting adjacent entity noise-added baseline, so the virtual baseline will increase the disturbance of noise. Moreover, the virtual baseline will limit the placement of two long baselines adjacent to the short baseline. The reference [8] puts forward multi-pare unwrap ambiguity algorithm. The baseline is required to be mutual prime. The phase ambiguity can be obtained by two-dimensional integer search, but each group is required to contain the correct ambiguity number. The reference [9] puts forward stagger-baseline algorithm and require the baselines satisfied stagger qualification. The ambiguity number of each baseline can be obtained by multi-dimensional integer search. In reference [10], the cosine function is used to eliminate the resolution of the ambiguity number. The operation of the algorithm is mainly concentrated in the calculation of multiple cosine functions. In reference [11], a high-precision AOA algorithm is introduced,","PeriodicalId":11369,"journal":{"name":"DEStech Transactions on Environment, Energy and Earth Science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81924125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}