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Solar Tracker: Performance Analysis and Optimisation of Efficiency 太阳能跟踪器:性能分析和效率优化
Pub Date : 2023-02-04 DOI: 10.24321/2455.3093.202202
Preety Aneja
Solar energy is one of the richest source of renewable energy on Earth, thus its harnessing is very much necessary for the useful conversion of light energy into electric energy. Solar panels are developed in this direction. Many scientists have developed various methods to gather the solar irradiation in order to maximize the extraction of electric power from the Photovoltaic generators. However, the problem with the solar power is that it is directly dependent on light intensity. The main hindrance with solar panels is their low efficiency with huge investment. Studies show that a solar panel converts 20-40% of energy incident on it to electrical energy. The solution is to use a tracking system1, 7 that maintains the panel’s position orthogonal with the light source. There are many tracking systems designs available including passive and active systems with one or two axes of freedom.8, 9 It has been found that the overall efficiency gain in single-axis solar tracker designed in10 is 27% than that of fixed mechanism. We had optimised the tracker efficiency by performing the experiment with solar tracker for consecutive three days and thus results were analysed by using stat-ease software. Moreover, the testing showed that the power used by the tracking system was much less than that of power gained by tracking system. While working on the developed set-up, focus was given on the incremental efficiency of the solar power generation system. In the present work, further performance analysis is taken up with the help of various parameters viz. Specific Energy Production (SEP), Performance Ratio (PR), Ground Cover Ratio (GCR) and Surface Performance Ratio (SPR)11 to further elaborate the efficiency enhancement in solar trackers as compared to fixed systems.
太阳能是地球上最丰富的可再生能源之一,因此对太阳能的利用对于将光能有效地转化为电能是非常必要的。太阳能电池板正朝着这个方向发展。为了最大限度地从光伏发电机中提取电能,许多科学家开发了各种收集太阳辐射的方法。然而,太阳能的问题在于它直接依赖于光强。太阳能电池板的主要障碍是效率低,投资大。研究表明,太阳能电池板将20-40%的入射能量转化为电能。解决方案是使用跟踪系统1,7,使面板的位置与光源正交。有许多可用的跟踪系统设计,包括具有一个或两个自由轴的被动和主动系统。研究发现,2010年设计的单轴太阳能跟踪器的总效率比固定机构的总效率提高27%。我们用太阳能跟踪器连续进行了三天的实验,优化了跟踪器的效率,并使用stat-ease软件对结果进行了分析。此外,测试表明,跟踪系统所消耗的功率远远小于跟踪系统所获得的功率。在开发装置的同时,重点放在了太阳能发电系统的增量效率上。在目前的工作中,进一步的性能分析是在各种参数的帮助下进行的,即比能量生产(SEP),性能比(PR),地面覆盖比(GCR)和表面性能比(SPR)11,以进一步阐述与固定系统相比,太阳能跟踪器的效率提高。
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引用次数: 0
Risk Management in the Post Pandemic Business Environment 大流行后商业环境中的风险管理
Pub Date : 2021-11-30 DOI: 10.24321/2455.3093.202105
G. Blair
The requirement to address risk in the prevailing business environment has been accentuated due to the constraints of the pandemic. It is proposed that the nature of risk context has been fundamentally altered by the global events of COVID. This paper provides a perspective that is based on an exploratory study of the identification and addressing of risk, in terms of business projects.A review of the literature has been undertaken and the key themes for the study topic identified. A senior manager, who is responsible for risk management at a company that runs international projects, was interviewed in an empirical study. A thematic analysis was performed, employing an inductive approach, in this research into a single case. The aim was to contribute to the prevailing literature and enhance understanding of the post pandemic business environment, in respect of risk management.The principal questions concerning risk and risk management are discerned. The objective is to consider risk in the post pandemic environment, in order to improve understanding of the issues relevant to business. The requirement to address these issues is also covered, with an attempt to determine the main themes from the research, in order to assist practitioners.The use of technology to support business continuity and achieve business objectives during the pandemic is discussed. An articulation of Lewin’s change model is proposed to summarise this work and assist in the comprehension of the contemporary situation.
由于大流行病的限制,应对当前商业环境风险的要求更加突出。有人提出,COVID的全球事件已经从根本上改变了风险背景的性质。本文提供了一个基于对商业项目风险识别和处理的探索性研究的视角。对文献进行了回顾,并确定了研究主题的关键主题。在一项实证研究中,对一家经营国际项目的公司负责风险管理的高级经理进行了采访。专题分析进行了,采用归纳的方法,在这个研究到一个单一的情况下。其目的是对现有文献作出贡献,并在风险管理方面增进对大流行后商业环境的了解。关于风险和风险管理的主要问题是明确的。目的是考虑大流行后环境中的风险,以便增进对与业务有关的问题的了解。解决这些问题的要求也包括在内,试图从研究中确定主题,以帮助从业者。讨论了在大流行期间利用技术支持业务连续性和实现业务目标的情况。本文提出对Lewin的变化模型进行阐述,以总结这项工作并帮助理解当代形势。
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引用次数: 0
An Investigation about the Natural Precursors of Disasters 灾害的自然前兆研究
Pub Date : 2021-11-30 DOI: 10.24321/2455.3093.202103
Praveen Ss
Natural disasters were a matter of things which were happening on the other side of the globe or planet especially for the people in Kerala. But disasters starting from 2004 Tsunami, 2017 Ockhi and 2018 floods exposed our vulnerabilities. Just before these disasters there were certain indications by the nature called as natural precursors. But the coastal community was not at all aware of such things and it contributed to the intensity of casualty. This paper is an attempt to identify and showcase those natural precursors during the event of above mentioned natural disasters which happened in Kerala and Tamilnadu. The investigation highlights the need for creating awareness about these kind of precursors especially among the coastal community. This investigation mentions several different, occurred precursors and briefly mentions about the science behind these precursors and urges the need for an in-depth scientific analysis incorporating large samples of heterogeneous nature, physical modelling and numerical modelling for unraveling the causative factors behind this. In-depth understanding about these kinds of precursors should be carried out and it should be backed with scientific evidence. The investigation recommends effective use of both official warnings and natural precursors for accelerating the mitigation activities prior to a disaster.
自然灾害是发生在地球或地球另一端的事情,特别是对喀拉拉邦的人们来说。但从2004年的海啸、2017年的occhi和2018年的洪水开始的灾难暴露了我们的脆弱性。就在这些灾难发生之前,大自然有一些被称为自然先兆的迹象。但沿海社区根本不知道这些事情,这导致了伤亡的严重程度。本文试图在喀拉拉邦和泰米尔纳德邦发生的上述自然灾害事件中识别和展示这些自然前兆。这项调查强调了提高人们对这些前体的认识的必要性,特别是在沿海社区。这项调查提到了几种不同的、发生的前体,并简要地提到了这些前体背后的科学,并敦促需要进行深入的科学分析,包括大型异质性样本、物理模型和数值模型,以揭示背后的致病因素。对这类前体的深入了解应该得到科学证据的支持。调查建议有效利用官方预警和自然前兆,在灾害发生前加快减灾活动。
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引用次数: 0
Optimization Technique Approach on a Two-Stroke Engine with Coated Piston and Gasoline Blends 涂覆活塞与汽油混合物二冲程发动机优化技术研究
Pub Date : 2021-11-30 DOI: 10.24321/2455.3093.202104
Avns Kiran
The performance and emissions affected by the coating have been analyzed in this study. In the present experimental investigation with gasoline blends of butanol and propanol along with magnesium partially stabilized zirconium (Mg-PSZ) as thermal barrier coating on piston crown of 100 microns. The samples of gasoline blends were blended with petrol in 20:80 ratios (20% of ethanol and 80% of gasoline, 20% of butanol and 80% of gasoline). The specific standard parameters have been modified with Mg-PSZ coated petrol engine with aid of design of experiment by Taguchi with grey relational analysis optimisation method, for improving the engine performance and emission reduction. The result shows that modified Mg-PSZ coated piston at B20. Finally, the results of the experiments were compared with uncoated and coated engine and optimised parameters have been identified for Mg-PSZ coated modified piston using Taguchi grey relational method.
分析了涂层对其性能和辐射的影响。本实验采用丁醇和丙醇的汽油混合物和镁部分稳定锆(Mg-PSZ)作为100微米活塞顶的热障涂层。汽油混合物的样品以20:80的比例与汽油混合(20%乙醇和80%汽油,20%丁醇和80%汽油)。以Mg-PSZ涂层汽油机为例,通过田口的灰色关联分析优化设计,对其具体的标准参数进行了修改,以提高发动机的性能和降低排放。结果表明,改性Mg-PSZ涂层活塞在B20处。最后,将实验结果与未涂覆和涂覆发动机进行了比较,并利用田口灰关联法确定了Mg-PSZ涂覆改性活塞的优化参数。
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引用次数: 2
echnology and the Environment – A Framework for a Symbiotic Relationship 技术与环境——共生关系的框架
Pub Date : 2021-04-23 DOI: 10.24321/2455.3093.202102
G. Blair
Technology pervades every aspect of modern life and the recent pandemic has increased our reliance on and usage of technology to overcome the constraints of movement that have necessarily been imposed on populations. This has allowed society to proceed with business and social activity via the virtual world. Most of the major advances of society have been driven by technology to form new paradigms. However, these have brought their own problems, with the creation of pollution, waste, depletion of natural resources, exploitation of the workforce, and destruction of the natural world. This paper aims to consider the requisite changes to use technology to sustain our environment, highlighting the attempts to reverse the destructive trends driven by technological advancement. The required contingency framework for technology is discussed, in respect of its central aspects. The principal theme is that technology, in terms of the creation of tools for human usage, is neutral, however, the focus of society towards investing in technologies and the manner in which technologies are used is not neutral. The potential for political, social, and economic agenda exists, underpinning decisions in these spheres, so human interest drives this technological change. This article outlines the key themes leading to the development of a symbiotic approach to the relationship between technology and environment. The requisite change drivers for technology projects are considered, such as the ‘triple bottom line’ approach that encompasses society and the environment together with profit as factors in decision-making and the use of global virtual teams, to run and maintain such projects and their resultant products and services.The article uses a review of a range of literature to consider these central themes to enable and encourage technological change that sustains the environment, in respect of the natural and social worlds. A framework is proposed in order to provide an initial consideration of the topic and as a vehicle for future research into this area.
技术渗透到现代生活的各个方面,最近的大流行病增加了我们对技术的依赖和使用,以克服人口必然受到的行动限制。这使得社会可以通过虚拟世界进行商业和社会活动。社会的大多数重大进步都是由技术推动的,形成了新的范式。然而,这些都带来了自己的问题,造成污染、浪费、自然资源枯竭、劳动力剥削和自然世界的破坏。本文旨在考虑使用技术来维持我们的环境所必需的变化,强调了扭转由技术进步驱动的破坏性趋势的尝试。就技术的中心方面,讨论了技术所需的应急框架。主要的主题是,就创造供人类使用的工具而言,技术是中性的,然而,社会对技术投资的重点和使用技术的方式不是中性的。政治、社会和经济议程的潜力是存在的,它们支撑着这些领域的决策,因此人类的利益驱动着这种技术变革。本文概述了导致技术与环境之间关系的共生方法发展的关键主题。考虑到技术项目的必要变化驱动因素,例如“三重底线”方法,该方法包括社会和环境以及利润作为决策因素和使用全球虚拟团队,以运行和维护此类项目及其最终产品和服务。本文通过对一系列文献的回顾来考虑这些中心主题,以便在自然和社会世界方面实现和鼓励维持环境的技术变革。提出了一个框架,以提供对该主题的初步考虑,并作为未来研究该领域的工具。
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引用次数: 0
Impact of Agriculture on Economic Development of Nepal using Statistical Model 利用统计模型研究农业对尼泊尔经济发展的影响
Pub Date : 2021-04-23 DOI: 10.24321/2455.3093.202101
A. Mishra
Nepal has many factors that influence economic development one of the factors in agriculture. The main objectives of this paper are to examine the status of the economic growth of Nepal and dependency on economic growth in Agriculture illustrating statistically.The quantitative cum survey method is employed here to analyse the relationship between the economic growth of Nepal and Agriculture. The macro data used here are based on a secondary source. The data are taken from an economic survey published by the Ministry of Finance, Government of Nepal.Statistical tools like regression analysis, correlations, the coefficient of multiple determinations and the adjusted coefficient of determination have been employed.In Nepal, over the last fifteen years, poverty has remarkably come down despite lower economic growth meaning that reducing poverty would be much easier if the economic growth rate could be increased. Regarding economic growth contribution of the agriculture sector to GDP is gradually decreasing every year, while that of the non-agriculture sector increasing. The contribution of the agriculture sector to GDP is estimated to stand 27.7% and 72.3% respectively in the FY 2019/2020 while their contribution during FY 2018/2019 was 27.0% and 73.0% respectively.
影响尼泊尔经济发展的因素有很多,其中一个因素是农业。本文的主要目的是研究尼泊尔的经济增长状况和依赖农业经济增长的统计说明。本文采用定量调查的方法来分析尼泊尔经济增长与农业的关系。这里使用的宏数据基于辅助来源。这些数据来自尼泊尔政府财政部公布的一项经济调查。统计工具,如回归分析,相关性,多重决定系数和调整的决定系数已被使用。在尼泊尔,在过去的15年里,尽管经济增长率较低,但贫困人口显著减少,这意味着如果经济增长率能够提高,减少贫困就会容易得多。在经济增长方面,农业部门对GDP的贡献逐年下降,而非农业部门的贡献逐年增加。2019/2020财年,农业部门对GDP的贡献估计分别为27.7%和72.3%,而2018/2019财年的贡献分别为27.0%和73.0%。
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引用次数: 1
A Glance on Indoor Air Pollutants, their Impacts and Simple Solutions to Avoid Health Related Issues 室内空气污染物概览,它们的影响和简单的解决方案,以避免与健康有关的问题
Pub Date : 2020-12-22 DOI: 10.24321/2455.3093.202009
A. Husainy
Every coin has two sides. Likewise, as we are progressing towards the era of technology and industrialization; a lot of worst effects are arising as well. Along with the ecosystem, human health is suffering from some adverse issues because of pollution. We have heard about outdoor air pollution but indoor air pollution is even more harmful to human health. It is being observed that Indoor Air Quality (IAQ) is getting worse day by day leading to many lung diseases, breathing issues, low birth rate, eye-related diseases, perinatal conditions, etc. Hence these issues have to be considered before getting too late. Indoor air quality varies from regions i.e. in the case of developed countries; cooling-heating appliances, electric devices, petroleum products, etc. are the major contributors to deplete IAQ. While in case of developing countries which have a huge number of rural areas; biomass open fires, traditional cooking systems with direct fire expose or indoor stove, etc. are the major factors behind damaged indoor air quality. Generally, children and aged persons spend most of their time inside the house. These people have low immunity hence they get easily affected by depleted IAQ and face many health-related issues. There is a long list of harmful pollutants like NOX, COX, SOX, organic matter, etc. that play a significant role in damaging air quality. A ventilation system is essential in offices, theatres, malls, homes, etc. but the occupant devices lower the air quality index. Likewise, green-house effects increase the percentage of COX which damages nature and human health as well. All these factors, parameters, adverse effects and solutions are studied in this paper.
凡事都有两面性。同样,随着我们走向科技和工业化时代;许多最坏的影响也正在产生。随着生态系统的恶化,由于污染,人类的健康也受到了一些不利的问题。我们都听说过室外空气污染,但室内空气污染对人体健康的危害更大。据观察,室内空气质量日益恶化,导致许多肺部疾病、呼吸问题、低出生率、与眼睛有关的疾病、围产期疾病等。因此,这些问题必须在为时已晚之前加以考虑。室内空气质量因区域而异,即在发达国家;冷热器具、电器、石油产品等是消耗室内空气质素的主要因素。而对于拥有大量农村地区的发展中国家;生物质明火、传统的直接火暴露烹饪系统或室内炉灶等是导致室内空气质量受损的主要因素。一般来说,孩子和老人大部分时间都呆在家里。这些人免疫力低下,因此容易受到室内空气质量不足的影响,并面临许多与健康有关的问题。有一长串有害污染物,如氮氧化物,COX, SOX,有机物等,在破坏空气质量方面起着重要作用。通风系统在办公室、剧院、商场、家庭等都是必不可少的,但乘员设备会降低空气质量指数。同样,温室效应增加了COX的百分比,这也损害了自然和人类健康。本文对这些因素、参数、不利影响及解决方法进行了研究。
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引用次数: 0
Energy Crisis, Resource Scarcity, and Innovations in Biofuels 能源危机、资源短缺和生物燃料的创新
Pub Date : 2020-06-19 DOI: 10.24321/2455.3093.202007
Nirupa Jain
Natural resources are scarce and there is a need to explore new resources to meet the rising demand for energy. There is also a need to meet sustainable development goals through proper planning and strategy. Fossil fuel has a finite supply and there will be a huge gap between demand and supply due to rising demand. There is a need to develop biofuel to replace fossil fuel. This paper gives a discussion about current issues and future directions in these sectors.
自然资源是稀缺的,有必要开发新的资源,以满足日益增长的能源需求。还需要通过适当的规划和战略实现可持续发展目标。化石燃料的供应是有限的,由于需求的增加,供需之间将存在巨大的差距。有必要开发生物燃料来取代化石燃料。本文对这些领域的现状和未来发展方向进行了讨论。
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引用次数: 0
Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra 马哈拉施特拉邦那格浦尔卡尔梅什瓦尔Chandrabhaga河土壤的理化性质
Pub Date : 2020-06-19 DOI: 10.24321/2455.3093.202006
A. M. Watkar
Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.
土,本身就是无限生命的灵魂。土壤是地球表面自然形成的未固结或松散的覆盖物。物理性质取决于土壤颗粒的数量、大小、形状、排列和矿物组成。它还取决于有机质含量和孔隙空间。化学性质取决于土壤中存在的无机物和有机物。土壤是几乎所有土地利用类型的环境和基础资源的基本组成部分,也是可持续农业的最重要组成部分。因此,评价土壤质量及其随时间变化的方向是农地可持续经营的理想和主要指标。土壤质量指标是指可测量的土壤属性,这些属性影响土壤在生态系统规定的限度内发挥功能的能力,以保持生物生产力和环境质量,促进植物、动物和人类健康。目前的研究是评估这些土壤属性,如物理和化学性质的季节明智的。
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引用次数: 0
A Review of Role of Traffic Culture in Air Pollution Reduction in Metropolis of Developing Countries 交通文化在减少发展中国家大都市空气污染中的作用综述
Pub Date : 2020-05-16 DOI: 10.24321/2455.3093.202004
P. Saremi
Nowadays, environmental problems, especially air pollution issues, are one of the major problems in the metropolis of the world, which its side dimensions and effects are increasing day by day. According to statistics and Information over 30% of the world’s energy consumption is allocated to the transport sector, it is not, therefore, unthinkable that to consider motor vehicles as one of the main sources of air pollution. Gases from the combustion of vehicles’ fuel are the most important air pollutants. Therefore, the first step in the process of reducing air pollution is to reduce vehicle traffic and also fuel consumption reduction per vehicle navigation. To achieve these goals, various traffic solutions have been proposed. These include the use of traffic culture making tools to reduce and control air pollution. In this paper, the effects of the cultural context in traffic and transportation sector are studied, especially the affections related on the choice of transport mode used in urban trips to reduce air pollution, it is noticeable that using appropriate educational methods and promoting the cultural levels of society by using various tools can greatly reduce air pollutants, especially in metropolitan areas.
环境问题,尤其是空气污染问题,是当今世界各大城市面临的主要问题之一,其附带规模和影响日益增大。根据统计数据和信息,超过30%的世界能源消耗分配给运输部门,因此,将机动车辆视为空气污染的主要来源之一并不是不可想象的。汽车燃料燃烧产生的气体是最重要的空气污染物。因此,在减少空气污染的过程中,第一步是减少车辆交通量,也减少每辆车的油耗。为了实现这些目标,人们提出了各种交通解决方案。这些措施包括使用交通文化制作工具来减少和控制空气污染。在本文中,文化背景对交通运输部门的影响进行了研究,特别是对城市旅行中使用的交通方式选择的影响,以减少空气污染,值得注意的是,使用适当的教育方法和通过使用各种工具提高社会的文化水平可以大大减少空气污染物,特别是在大都市地区。
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引用次数: 0
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Journal of Advanced Research in Alternative Energy, Environment and Ecology
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