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Feasibility Study of Wave Power in Ghana 加纳波浪发电可行性研究
IF 3.7 Q1 Engineering Pub Date : 2022-11-16 DOI: 10.1080/19397038.2022.2145384
S. Tulashie, Raphael Odai, Adeola M. Dahunsi, Sandra Atisey, Jacking Amenakpor
ABSTRACT In this research, the evaluation of Ghana’s wave energy potential was presented based on the ERA5 monthly averaged data on single levels from 1979 to 2020 from European Centre for Medium-Range Weather Forecast (ECMWF). The data obtained which was the Significant Wave Height and Wave Period were used to calculate the Average Wave Power and Energy. The total wave power crossing the three divisions of Ghana’s coastline has been calculated to be 7215 MW. The calculated wave energy available was compared to the Annual Energy Demand of Ghana. The calculated value gives a clear picture that wave energy can be another renewable energy source in Ghana. This was done relying on data from a third-generation spectral wave model to simulate the wave conditions which were used to analyse the potential of the wave-generated energy of the selected coastal areas in Ghana.
基于欧洲中期天气预报中心(ECMWF) 1979 - 2020年单水平ERA5月平均数据,对加纳波浪能势进行了评价。得到的有效波高和波周期数据用于计算平均波能和平均波能。据计算,穿越加纳海岸线三段的总海浪功率为7215兆瓦。计算出的可利用波浪能与加纳的年能源需求进行了比较。计算值清楚地表明,波浪能可以成为加纳的另一种可再生能源。这项工作是根据第三代光谱波浪模型的数据完成的,该模型模拟了波浪条件,用于分析加纳选定沿海地区波浪产生的能量的潜力。
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引用次数: 1
Water Quality Index Model Application in Evaluation of Groundwater Quality in a Waste Treatment Facility 水质指数模型在污水处理厂地下水水质评价中的应用
IF 3.7 Q1 Engineering Pub Date : 2022-11-15 DOI: 10.1080/19397038.2022.2146775
G. Safo-Adu
ABSTRACT Water Quality Index (WQI) model was utilised to evaluate the physicochemical parameters of groundwater quality at the effluent discharge and administration areas of a waste treatment facility (WTF) in Shama Municipality in Ghana. Borehole water samples were collected once a week for six months and coliform bacteria were determined in the samples using Colony Forming Unit while the physicochemical parameters were analysed using instrumental and titrimetric techniques. Twenty physicochemical parameters were used in computing the WQI of groundwater. Groundwater collected I km away and within the WTF tested negative and positive for coliform bacteria respectively. WQI classified groundwater samples collected at the effluent discharge area as poor water quality type. However, groundwater collected 1 km away and at the administration area of the treatment facility was of good physicochemical quality. The levels of EC, COD, TDS, Ca2+, Mg2+and Cl− ions exceeded the WHO drinking water permissible limits. Statistically, there was no significant difference between mean levels of physicochemical parameters of groundwater at the three locations (p < 0.05). PCA revealed that weathering and dissolution of rock minerals and human-induced activities negatively affected the groundwater quality. The WTF groundwater was unsafe for use. Aquifer development and artificial recharge for sustainable development are recommended.
采用水质指数(WQI)模型评价了加纳沙马市一个废物处理设施(WTF)的污水排放和管理区域的地下水质量的理化参数。在六个月的时间里,每周采集一次井水样本,使用菌落形成装置测定样本中的大肠菌群细菌,同时使用仪器和滴定技术分析样本的理化参数。采用20个理化参数计算地下水WQI。1公里外和WTF内收集的地下水大肠菌群检测结果分别为阴性和阳性。WQI将在污水排放区采集的地下水样本划分为水质差类型。然而,在处理设施管理区域1公里外收集的地下水理化质量良好。EC、COD、TDS、Ca2+、Mg2+、Cl -离子均超过世界卫生组织饮用水允许限量。3个地点地下水理化参数均值差异无统计学意义(p < 0.05)。主成分分析表明,岩石矿物的风化和溶蚀作用以及人为活动对地下水水质有负面影响。WTF地下水使用不安全。建议开发含水层和人工补给以实现可持续发展。
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引用次数: 0
Impact of dust accumulation on photovoltaic panels: a review paper 粉尘堆积对光伏板的影响:综述
IF 3.7 Q1 Engineering Pub Date : 2022-11-06 DOI: 10.1080/19397038.2022.2140222
Haneen Abuzaid, M. Awad, A. Shamayleh
ABSTRACT Photovoltaic systems (PV) have been extensively used worldwide as a reliable and effective renewable energy resource due to their environmental and economic merits. However, PV systems are prone to several environmental and weather conditions that impact their performance. Amongst these conditions is dust accumulation, which has a significant adversative impact on the solar cells’ performance, especially in hot and arid regions. This study provides a comprehensive review of 278 articles focused on the impact of dust on PV panels’ performance along with other associated environmental factors, such as temperature, humidity, and wind speed. The review highlights the importance of modelling dust accumulation along with other ecological factors due to their interactive nature, and the differences between cleaning techniques and schedules effectiveness. Moreover, the study provides a review of statistical and artificial intelligence models used to predict PV performance and its prediction accuracies in terms of data size and complexity. Finally, the study draws attention to several research gaps that warrant further investigation. Among these gaps is the need for proper dynamic optimisation models for cleaning schedules and a more advanced machine and deep learning models to predict dust accumulation while considering environmental and ageing factors.
摘要光伏系统作为一种可靠、有效的可再生能源,由于其环境和经济优势,已在世界范围内得到广泛应用。然而,光伏系统容易受到影响其性能的几种环境和天气条件的影响。其中包括灰尘积聚,这对太阳能电池的性能有重大不利影响,尤其是在炎热和干旱地区。这项研究对278篇文章进行了全面综述,重点关注灰尘对光伏电池板性能的影响以及其他相关环境因素,如温度、湿度和风速。该综述强调了建模灰尘积聚和其他生态因素的重要性,因为它们具有相互作用的性质,以及清洁技术和时间表有效性之间的差异。此外,该研究还回顾了用于预测光伏性能的统计和人工智能模型及其在数据大小和复杂性方面的预测准确性。最后,本研究提请注意几个值得进一步调查的研究空白。这些差距包括需要适当的清洁时间表动态优化模型,以及更先进的机器和深度学习模型来预测灰尘积聚,同时考虑环境和老化因素。
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引用次数: 4
Towards renewable green energy produced by prickly pear living plant 刺梨活体植物生产可再生绿色能源
IF 3.7 Q1 Engineering Pub Date : 2022-11-02 DOI: 10.1080/19397038.2022.2140223
H. Guesmi, R. Ajjel, Talal Alqahtani, S. Algarni
ABSTRACT In recent years, low power consumption and portable devices have been developed that will be connected and used everywhere. However, this explosion will bring critical challenges to electricity consumption. In this work, copper and zinc electrodes are embedded in prickly pear plant as an electricity generation has been analysed and evaluated. Many experimental setups have been performed to determine the optimum method to collect the maximum amount of energy from the living plant. They study the influence of distance between electrodes, influence of the electrode’s size, influence of the electrode’s depth, effect of the couple electrodes number, and effect of series and parallel connection to harvested energy. Therefore, a combination of series and parallel connection among the leaves can be installed to harvest higher voltage and current. The experimental results show that 58,8 mW electrical power can be harvested using 18 pairs of electrodes embedded in 6 leaves. The produced energy is used to power up low-power devices such as a calculator or a light emitting diode (LED) and can be stored in a capacitor or a battery.
近年来,低功耗和便携式设备的发展,将连接和使用无处不在。然而,这种爆炸将给电力消费带来严峻的挑战。在这项工作中,铜和锌电极嵌入刺梨植物作为发电进行了分析和评估。为了确定从活植物中收集最大能量的最佳方法,已经进行了许多实验设置。他们研究了电极之间距离的影响、电极尺寸的影响、电极深度的影响、对电极数量的影响以及串联和并联对收集能量的影响。因此,可以在叶片之间安装串并联组合,以获得更高的电压和电流。实验结果表明,在6片叶子中嵌入18对电极,可以收获58.8兆瓦的电力。所产生的能量用于为低功耗设备供电,如计算器或发光二极管(LED),并可以存储在电容器或电池中。
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引用次数: 0
Thermal behavior of diesel, honge oil methyl ester and ITS B-20 blend in atmospheric air and oxygen 柴油、红格油甲酯和ITS B-20在大气和氧气中的热行为
IF 3.7 Q1 Engineering Pub Date : 2022-10-27 DOI: 10.1080/19397038.2022.2131931
V. Atgur, G. Manavendra, G. Desai, N. Banapurmath, Chandramouli Vadlamudi, Sanjay Krishnappa, B. N. Rao
ABSTRACT Thermal behavior of honge oil methyl ester (HOME) and its B-20 blend (20% HOME and 80% diesel) is examined by performing calorimetric experiments at 10°C/min heating rate in atmospheric air and oxygen medium. Thermogravitometry (TG) curves indicate two phases of decomposition for diesel and three phases for biofuel. Combustion reaction favors in oxidative atmosphere causing reduction in fuel preparation stage and increase in premixed burning phase reducing peak temperature of combustion and increasing enthalpy with high heat release rate. B-20 blend performance is similar to diesel with combustion index and intensity of combustion and is thermally stable with high offset temperature confirming more combustion duration. Blend of diesel lowers activation energy in initial stage of combustion process, whereas reverse trend is observed in final stage. Ignition index (Di) in air for diesel, HOME, and its B-20 blend is reduced by 70.11%, 34.92% and 42.80% respectively. Burnout index (Db) in air for diesel and B-20 blend reduced by 72% and 61% respectively whereas it increased by 28.5% for HOME. Combustion index (S) is more in air for HOME and its blend. Improved intensity of combustion is observed for diesel and B-20 blend in oxygen whereas reverse trend is observed for HOME.
摘要通过在大气和氧气介质中以10°C/min的加热速率进行量热实验,研究了红油甲酯(HOME)及其B-20共混物(20%HOME和80%柴油)的热行为。热重计(TG)曲线表示柴油的两个分解阶段和生物燃料的三个阶段。燃烧反应有利于氧化气氛中的燃烧,导致燃料制备阶段的减少和预混燃烧阶段的增加,降低了燃烧的峰值温度,并随着高热释放率而增加了焓。B-20混合物的性能在燃烧指数和燃烧强度方面与柴油相似,并且在高偏移温度下热稳定,从而确认了更长的燃烧持续时间。在燃烧过程的初始阶段,柴油的混合降低了活化能,而在燃烧的最后阶段则出现了相反的趋势。柴油、HOME及其B-20混合物在空气中的着火指数(Di)分别降低了70.11%、34.92%和42.80%。柴油和B-20混合物在空气中的燃尽指数(Db)分别降低了72%和61%,而HOME则增加了28.5%。HOME及其混合物在空气中的燃烧指数(S)更高。在氧气中观察到柴油和B-20混合物的燃烧强度提高,而在HOME中观察到相反的趋势。
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引用次数: 0
Practicing coopetition for food supply chain sustainability: a contextual perspective in the Norwegian fishing industry 食品供应链可持续性的实践合作:挪威渔业的背景视角
IF 3.7 Q1 Engineering Pub Date : 2022-10-13 DOI: 10.1080/19397038.2022.2131932
M. Harun, Deodat Mwesiumo, H. Hogset, A. Ramudhin
ABSTRACT With growing concerns about sustainability, competing companies in the food supply chain are compelled to engage in non-traditional forms of collaboration. Coopetition (i.e. horizontal collaboration with competitors) is gaining attention as a means of improving sustainability performance in supply chains. However, little is known in the existing literature about the causal mechanism and conditions of coopetition to improve supply chain sustainability in the food industry. Based on an embedded case study in the Norwegian fishing industry, we posit several propositions and develop an empirical framework delineating the relationship between coopetition and supply chain sustainability. The case study research is informed by semi-structured interviews corroborated by relevant secondary data. Our findings reveal a set of dynamic capabilities through which coopetition improves supply chain sustainability. Besides, laws and regulations, and certification and standards, positively impact the relationship between coopetition and supply chain sustainability. Conversely, insufficient funds, conflicts of interest, and firm size affect the same relationship negatively. This study contributes to the literature by providing valuable insights into coopetition as a source of dynamic capabilities. In addition, our results show how coopetition can best be leveraged by managers to improve the sustainability of the food supply chain.
摘要随着人们对可持续性的日益担忧,食品供应链中的竞争企业被迫进行非传统形式的合作。合作(即与竞争对手的横向合作)作为提高供应链可持续性绩效的一种手段,越来越受到关注。然而,在现有文献中,关于合作竞争提高食品行业供应链可持续性的因果机制和条件知之甚少。基于挪威渔业的嵌入式案例研究,我们提出了几个命题,并建立了一个经验框架,描述了合作竞争和供应链可持续性之间的关系。案例研究是通过半结构化访谈进行的,访谈得到了相关二级数据的证实。我们的研究结果揭示了一组动态能力,通过这些能力,合作竞争可以提高供应链的可持续性。此外,法律法规、认证和标准对合作竞争和供应链可持续性之间的关系产生了积极影响。相反,资金不足、利益冲突和公司规模会对同样的关系产生负面影响。这项研究通过提供对合作竞争作为动态能力来源的宝贵见解,为文献做出了贡献。此外,我们的研究结果表明,管理者如何最好地利用合作竞争来提高食品供应链的可持续性。
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引用次数: 2
Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements 废塑料部分替代细骨料对低碳钢筋混凝土路面的影响
IF 3.7 Q1 Engineering Pub Date : 2022-08-23 DOI: 10.1080/19397038.2022.2108156
K. Tota-Maharaj, B. Adeleke, G. Nounu
ABSTRACT Using waste plastics as a partial natural aggregate replacement and monitoring strength and workability reduction in pavement structures is vital to net-carbon zero. This study explores the utilisation of waste plastic as a fine aggregate replacement in medium-strength reinforced concrete pavements, for improving plastic aggregate performance and the intrinsic reasoning for observed strength performance. Various weight fractions of fines were substituted by the same weight of plastic aggregates ranging from 5–15% according to the appropriate standards (Eurocodes and British Standards). The physical and mechanical properties of the composites were analysed. The results indicated that the use of polymeric materials as a partial replacement for fines contributed to a decrease in workability, compressive strength and push-out bond between steel reinforcement and concrete. Despite these trends, 5% replacement of fine aggregates with plastic waste surpassed all the feasibility criteria. Furthermore, using 10% of plastic replacement by weight was deemed feasible in non-structural applications such as roads, pavements, and facades. The outputs have demonstrated environmental engineering concepts in tackling plastic waste, providing an alternative to conventional aggregate. Environmental benefits can arise due to the removal of potentially hazardous plastics from entering ecosystems as well as minimising dredging of global sand reserves.
使用废塑料作为部分天然骨料替代和监测强度和工作性降低的路面结构是至关重要的净碳零。本研究探讨了在中等强度钢筋混凝土路面中使用废塑料作为细骨料的替代品,以改善塑料骨料的性能和观察到的强度性能的内在原因。根据适当的标准(欧洲法规和英国标准),用相同重量的塑料骨料代替不同重量的细粒,重量范围为5-15%。对复合材料的物理力学性能进行了分析。结果表明,使用聚合物材料作为部分替代细粒有助于降低和易性,抗压强度和钢筋与混凝土之间的推出粘结。尽管有这些趋势,5%的塑料废物替代细骨料超过了所有的可行性标准。此外,在道路、人行道和外墙等非结构应用中,使用10%的塑料替代重量被认为是可行的。这些成果展示了处理塑料废物的环境工程概念,为传统骨料提供了一种替代方案。由于清除了进入生态系统的潜在有害塑料,以及最大限度地减少了全球沙子储备的疏浚,可以产生环境效益。
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引用次数: 2
Suppliers portfolio and returner incentive decisions in closed-loop remanufacturing systems under multiple stochastic scenarios 多随机情况下闭环再制造系统中供应商组合与回收商激励决策
IF 3.7 Q1 Engineering Pub Date : 2022-08-12 DOI: 10.1080/19397038.2022.2110330
A. Ruiz-Torres, F. Mahmoodi, S. Ohmori, A. Hlali
ABSTRACT We propose a decision tree model that considers reverse and forward flows in a closed-loop supply chain (CLSC). Based on observations of three CLSCs, the model considers an environment where there is uncertainty in the quantity of returned used components (and new components from suppliers) with the decision being the incentive offered to each return source. Given that there are multiple suppliers, one must determine which supplier(s) to use and the corresponding capacity to reserve, in order to minimise total system costs. An example and a sensitivity analysis are presented to illustrate the model and to investigate multiple scenarios under various conditions. The analysis demonstrates that the supplier portfolio and returner incentive decisions are strongly linked to the supplier reliability, returned quantities, and the costs of not meeting the demand. Furthermore, the analysis suggests that understanding the behaviour of return sources relative to incentives is the most critical variable to implement the model.
摘要:我们提出了一个决策树模型,该模型考虑闭环供应链中的正向和反向流动。基于对三个CLSC的观察,该模型考虑了一个环境,在该环境中,退回的旧部件(以及供应商的新部件)的数量存在不确定性,决策是为每个退货来源提供的激励。考虑到有多个供应商,必须确定使用哪个供应商以及保留相应的容量,以最大限度地降低系统总成本。给出了一个例子和灵敏度分析,以说明该模型,并研究不同条件下的多个场景。分析表明,供应商组合和退货者激励决策与供应商可靠性、退货数量和不满足需求的成本密切相关。此外,分析表明,了解回报来源相对于激励的行为是实施该模型的最关键变量。
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引用次数: 2
Techno-economic feasibility of a remote PV mini-grid electrification system for five localities in Chad 乍得五个地区远程光伏小型电网电气化系统的技术经济可行性
IF 3.7 Q1 Engineering Pub Date : 2022-07-20 DOI: 10.1080/19397038.2022.2101707
Abdelhamid Issa Hassane, D. H. Didane, A. M. Tahir, J. Hauglustaine, B. Manshoor, M. F. M. Batcha, J. Tamba, R. Mouangue
ABSTRACT This study presents a techno-economic analysis of a mini-grid solar photovoltaic system for five typical rural communities in Chad while promoting renewable energy systems adaptation and rural electrification. The assessment techniques include the establishment of the socio-economic state of the rural communities through a field survey. The costs of system development, electricity tariff and sizing of energy production are realised via the Levelized Cost of Electricity (LCOE) technique. Sensitivity analysis was carried out to identify the parameters that affect the evolution of the LCOE during the life cycle of the project. The results have shown that the annual energy production at all sites varies between 233 MWh/year and 3585 MWh/year. The highest amount of energy production is estimated at Guelendeng at a rate of 3218 MWh/year and a capacity of 2041 kW, while the lowest is predicted at Mombou at a rate of 211 MWh/year and a capacity of 134 kW. The standard LCOE for the system during the 25-year lifespan in the five villages is estimated at 0.30 €/kWh except at Mailo which was 0.31 €/kWh. This cost per kilowatt-hour is more attractive and competitive compared with the current rate charged by the national electricity company.
摘要本研究对乍得五个典型农村社区的小型电网太阳能光伏系统进行了技术经济分析,同时促进可再生能源系统的适应和农村电气化。评估技术包括通过实地调查确定农村社区的社会经济状况。系统开发、电价和能源生产规模的成本通过平准化电力成本(LCOE)技术实现。进行敏感性分析,以确定在项目生命周期内影响LCOE演变的参数。结果表明,所有地点的年能源产量在233 MWh/年至3585 MWh/年间变化。Guelendeng的发电量最高,预计为3218兆瓦时/年,发电量为2041千瓦,而Mombou的发电量最低,预计为211兆瓦时/每年,发电量134千瓦。除Mailo为0.31欧元/千瓦时外,该系统在五个村庄的25年使用寿命内的标准LCOE估计为0.30欧元/千瓦小时。与国家电力公司目前的费率相比,每千瓦时的成本更具吸引力和竞争力。
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引用次数: 4
Shedding light on the reverse logistics’ decision-making: a social-media analytics study of the electronics industry in developing vs developed countries 揭示逆向物流决策:发展中国家与发达国家电子行业的社会媒体分析研究
IF 3.7 Q1 Engineering Pub Date : 2022-07-19 DOI: 10.1080/19397038.2022.2101706
M. Shahidzadeh, Sajjad Shokouhyar
ABSTRACT Growing population leads to generating more waste and depletion of natural resources. Moreover, the cost of supplying some resources has increased substantially. Hence, the manufacturer is trying to focus on planning to get back old or partially/wholly unusable products and make the best disposition decisions on them. This research aims to build a multi-industry applied model using the deep learning method in social media analysis to make the best decision for returning products in reverse logistics, along with the sustainability and circular economy concerns. Furthermore, we outline the usage of social network analytics in aligning consumers’ expectations with supply chain policies, strategies, and decisions. An industry benchmark concerning circular economy concepts can be attained by applying the proposed model to different industries. We have proposed a generalisable model using social media analytics, consumer sentiment analysis, reverse logistics, and circular economy theory to attain a circular supply chain regarding sustainability concerns. Applying the proposed model to the electronics industry as a case study, the model was further validated with Twitter data analysis of developing versus developed countries for laptop devices. We collected over 70-million tweets using the Twitter Application Programming Interface (API) over fifteen months. The results approved the proposed model by leveraging the Twitter geolocation attribute to extract Twitter data from developing and developed countries. Moreover, the model is general enough to be used on various industries’ supply chains and provides managers and policymakers with deep insight into reverse logistics’ decision-making. It would be interesting to use real-time analytics and improve accuracy in future works. We made original contributions to reverse logistics decision-making in the circular economy context. Previous research, which has focused on supply chain decision-making, has been extended by providing theoretical and practical implications for social media analytics and the circular economy ecosystem. Thus, by scrutinising the consumers’ needs and expectations, we suggested the best decision on returned products to close an open-ended supply chain and achieve a circular economy. Furthermore, we derived industry benchmarks for both developing and developed countries separately. The results showed that the best decision on returning products in developing countries is different from developed countries. We advise top managers and policymakers to improve supply chain sustainability using social media analytics in developing and developed countries to substantially optimise waste and companies’ profits.
摘要人口的增长导致自然资源的浪费和枯竭。此外,提供一些资源的成本大幅增加。因此,制造商正试图专注于计划收回旧的或部分/完全不可用的产品,并对其做出最佳处置决定。本研究旨在使用社交媒体分析中的深度学习方法建立一个多行业应用模型,以在逆向物流中对退货产品做出最佳决策,同时考虑可持续性和循环经济问题。此外,我们概述了社交网络分析在将消费者的期望与供应链政策、战略和决策相一致方面的用途。通过将所提出的模型应用于不同的行业,可以获得有关循环经济概念的行业基准。我们提出了一个可推广的模型,使用社交媒体分析、消费者情绪分析、逆向物流和循环经济理论,以实现关于可持续性问题的循环供应链。将所提出的模型应用于电子行业作为案例研究,通过Twitter对发展中国家与发达国家笔记本电脑设备的数据分析,进一步验证了该模型。在15个月的时间里,我们使用Twitter应用程序编程接口(API)收集了7000多万条推文。研究结果通过利用推特地理位置属性从发展中国家和发达国家提取推特数据,批准了所提出的模型。此外,该模型足够通用,可用于各个行业的供应链,并为管理者和决策者提供了对逆向物流决策的深入见解。在未来的工作中使用实时分析并提高准确性将是一件有趣的事情。我们为循环经济背景下的逆向物流决策做出了原创性贡献。先前的研究侧重于供应链决策,通过为社交媒体分析和循环经济生态系统提供理论和实践启示,得到了扩展。因此,通过仔细审查消费者的需求和期望,我们建议对退货产品做出最佳决定,以关闭开放式供应链,实现循环经济。此外,我们分别得出了发展中国家和发达国家的行业基准。结果表明,发展中国家退货的最佳决策与发达国家不同。我们建议高级管理人员和决策者在发展中国家和发达国家使用社交媒体分析来提高供应链的可持续性,以大幅优化浪费和公司利润。
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引用次数: 8
期刊
International Journal of Sustainable Engineering
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