American Journal of Energy Engineering最新文献_第2页

Energy Mutual Networking Establishment Method Based on Hydrogen Production from Water Electrolysis Technology 基于水电解制氢技术的能源互联网建立方法

American Journal of Energy Engineering Pub Date : 2023-04-13 DOI: 10.11648/j.ajee.20231102.11

Nie Xin, Anjar Praditya Wicaksono

引用次数: 0

Productivity, Bioconversion Capacity, Protein and Fat Contents of Black Soldier Fly Larvae (Hermetia illucens) Fed with Jatropha Curcas Pressed Cake 麻疯树压饼对黑虻幼虫生产力、生物转化能力、蛋白质和脂肪含量的影响

American Journal of Energy Engineering Pub Date : 2023-03-16 DOI: 10.11648/j.ajee.20231101.13

Nono Wandji Brice Leonel, Tangka Julius Kewir, Boris Merlain Djousse Kanouo, Sogang Segning Harry Bertholt, Tedongmo Gouana Jospin

{"title":"Productivity, Bioconversion Capacity, Protein and Fat Contents of Black Soldier Fly Larvae (<i>Hermetia illucens)</i> Fed with Jatropha Curcas Pressed Cake","authors":"Nono Wandji Brice Leonel, Tangka Julius Kewir, Boris Merlain Djousse Kanouo, Sogang Segning Harry Bertholt, Tedongmo Gouana Jospin","doi":"10.11648/j.ajee.20231101.13","DOIUrl":"https://doi.org/10.11648/j.ajee.20231101.13","url":null,"abstract":": The use of black soldier flies (BSF) for biofuel production and fish feeding is nowadays presented as an ecological alternative. Several biomasses have been used to nurture BSF, however Jatropha curcas pressed cake obtained from biofuel production using jatropha seeds is a nutrient-rich biomass that has not yet been fully used as feed for BSF, probably due to its toxicity (not used in animal feeding). The aim of this study was to assess the bioconversion of this cake by black soldier flies ( Hermetia illucens ) following different detoxification treatments. The study was conducted in a greenhouse. Three detoxification treatments were applied on Jatropha curcas pressed cakes (whitch was obtained by cold pressing of Jatropha cusas seeds with a residual oil content of 24.64±0.05%): the treatments consisted of a control, thermal, biological and thermo-biological treatments. Resulting cake samples were used to feed 4 treatments of 550 BSF larvae in each. Each treatment had 4 repetitions, making a total of sixteen repetitions. The BSF larvae were four-day-old and were fed with 90 g of cakes every 4 days during 15 days. Assessed parameters included survival rate of larvae, meal reduction rate, bioconversion rate, organic matter, fats, crude protein, and ash contents of larvae. Results showed that the highest (p>0.05) larval survival rate (98,42±1,22%) was obtained with the biological treatment. The best bioconversion rate (37.1±60.68%) was recorded with the control treatment. No significant difference was observed between treatments with regard to organic matter (94.25±0.13%), fats (32.08±0.25%), crude protein (45.33±0.14%) and in ash (5.75±0.13%) contents. It was concluded that Jatropha curcas cakes , although toxic for monogastric, are appropriate feed material for black soldier fly larvae and can be used without any prior detoxification treatment.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130102452","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}

引用次数: 0

Energy Balance and Thermal Evolution Analysis of Heat Transfer Fluids of Stirling Engine and Boiler at Focal Point of a Parabolic Solar Concentrator 抛物型太阳能聚光器焦点处斯特林发动机和锅炉传热流体的能量平衡与热演化分析

American Journal of Energy Engineering Pub Date : 2023-03-16 DOI: 10.11648/j.ajee.20231101.14

Harouna Sani Dan Nomao, Makinta Boukar, S. Madougou

{"title":"Energy Balance and Thermal Evolution Analysis of Heat Transfer Fluids of Stirling Engine and Boiler at Focal Point of a Parabolic Solar Concentrator","authors":"Harouna Sani Dan Nomao, Makinta Boukar, S. Madougou","doi":"10.11648/j.ajee.20231101.14","DOIUrl":"https://doi.org/10.11648/j.ajee.20231101.14","url":null,"abstract":": A solar concentrator is a technology that converts direct solar radiation into heat. The parabolic concentrator is the best technology for producing electricity from solar energy, because of its high electrical efficiency, about 41%. This technique is the least mature due to the difficulties related to the storage of produced energy. This work concerns a system of two heat receivers, placed at the focus of the parabolic reflector. These two receivers are a boiler and a Stirling engine. The boiler is intended to heat a thermal fluid that will be stored while Stirling engine will produce electricity directly. We studied the thermal balance and the evolution of the temperature of thermal fluids of Stirling engine and the boiler installed at focal point of reflector. The concentrator used is a parabola with surface of 12.6 m². The simulations were carried out in the vicinity of direct radiation measured at 1 pm o'clock local time. The temperature recorded at the focal point varies from 30°C to 900°C for a duration of 80 seconds; when the direct radiation is about 900W/m². This temperature increases from 30°C to 1050°C, for an operating time of 120s. The average temperature of the three fluids in the receiver (permanent fluid in the boiler, heat transfer fluid to be stored, and thermal fluid of Stirling engine) increases from 30°C to over 400°C in less than 1500s. These thermal fluids at this temperature make it possible to operate turbine through the thermal storage system and Stirling engine, to produce electricity.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133958005","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}

引用次数: 0

Targeting Factors of Ecotax Based on Cradle-to-Grave of Carbon Footprint for SELECT Criteria Mechanism of Decision Process Using Waste-to-Energy Technology 基于碳足迹从摇篮到坟墓的生态税收目标选择准则——垃圾发电技术决策过程机制

American Journal of Energy Engineering Pub Date : 2023-01-30 DOI: 10.11648/j.ajee.20231101.12

Z. Llarena

引用次数: 1

Optimization of a High Capacity Industrial Bar Press for Jatropha Curcas Oil Extraction 大容量麻疯树榨油机的优化设计

American Journal of Energy Engineering Pub Date : 2023-01-10 DOI: 10.11648/j.ajee.20231101.11

Moussa Abdoul-Aziz, Sidibe Sadio Sayon, Ouedraogo Abdoulaye, O. Emmanuel, Ousmane Moctar, C. Ousmane

引用次数: 0

Experimental Study of the Annual Operation of an Air-soil Heat Exchanger in Ouagadougou 瓦加杜古空气-土壤换热器年运行试验研究

American Journal of Energy Engineering Pub Date : 2021-10-21 DOI: 10.11648/J.AJEE.20210904.12

B. Kaboré, G. W. P. Ouedraogo, B. Ouédraogo, S. Kam, D. Bathiébo

{"title":"Experimental Study of the Annual Operation of an Air-soil Heat Exchanger in Ouagadougou","authors":"B. Kaboré, G. W. P. Ouedraogo, B. Ouédraogo, S. Kam, D. Bathiébo","doi":"10.11648/J.AJEE.20210904.12","DOIUrl":"https://doi.org/10.11648/J.AJEE.20210904.12","url":null,"abstract":"The use of air-soil heat exchangers for cooling habitats has developed considerably in recent years. An air-soil heat exchanger (ASHE) is a geothermal system that uses the thermal inertia of the soil to heat or cool part of the air to renew a habitat. It is sometimes called a Canadian well or a Provencal well. In this present work, we have presented the experimental prototype implemented in Ouagadougou. It is an air-soil heat exchanger consisting of a U-shaped PVC pipe of horizontal length 15 m, diameter 16 cm and placed at a depth of 1.5m (slope of about 2%) in floor. The experimental work consists in measuring, on the one hand, the temperature of the air from the inlet of the tube to the outlet in steps of 2 m in length and, on the other hand, the temperatures of the ambient air, air in the habitat and soil at 1 m and 1.5 m depth. This study has allowed analyzing the evolution of air temperatures in the system. The thermals performances of air-soil heat exchanger have been also evaluated and his influence on air temperature in the habitat. The results show that the experimental setup is of good quality. In practice, the thermal efficiency is between 20% and 70%.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124115476","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}

引用次数: 1

Indoor Air Quality of Historic Buildings: A Comparison of Certified to Non-certified Buildings 历史建筑的室内空气质量:认证与非认证建筑的比较

American Journal of Energy Engineering Pub Date : 2021-10-12 DOI: 10.11648/J.AJEE.20210904.11

J. F. Stephens, Farah Abaza

{"title":"Indoor Air Quality of Historic Buildings: A Comparison of Certified to Non-certified Buildings","authors":"J. F. Stephens, Farah Abaza","doi":"10.11648/J.AJEE.20210904.11","DOIUrl":"https://doi.org/10.11648/J.AJEE.20210904.11","url":null,"abstract":"Since, there is a high level of concern for historic buildings becoming sustainable this paper will investigate the indoor air quality of three historical buildings that are on the National Registry of Historic Buildings and located around Fulton County, Georgia, USA and three historical buildings that are not certified in the same area. The certification for the three certified buildings was obtained thru Earth Craft Sustainable Preservation program, which is the only historic building certification in the United States. The research entails field measurements of CO2 levels, air borne particles (both types and sizes), and greenhouse gas emissions. This was done by counting the airborne particles with sizes between 0.3 to 5.0 nanometers, and identifying biological and non-biological airborne particles both indoors and outdoors. These tests were used to determine if the interior of the certified buildings have better CO2 levels than the exterior and to ascertain how much the certification process effects the indoor air quality. This information will be compared to the noncertified buildings to ascertain if the results of the testing will show that the indoor air quality and greenhouse gases are better than the noncertified buildings. This research will demonstrate the need for improved indoor air quality testing in historic buildings before certifying them as being sustainable in the area of indoor air quality.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124716018","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}

引用次数: 0

Slope Stability in a Mining Environment M'haoudatt-Zouerate Site, Mauritania M'haoudat - zouerate矿区采矿环境下的边坡稳定性

American Journal of Energy Engineering Pub Date : 2021-09-06 DOI: 10.11648/J.AJEE.20210903.13

Ahmed Hemed, L. Ouadif

{"title":"Slope Stability in a Mining Environment M'haoudatt-Zouerate Site, Mauritania","authors":"Ahmed Hemed, L. Ouadif","doi":"10.11648/J.AJEE.20210903.13","DOIUrl":"https://doi.org/10.11648/J.AJEE.20210903.13","url":null,"abstract":"The instability of the M'HAOUDATT pit is a major problem often encountered on the wall composed of a network of fractures located in unfavorable conditions for a very soft geological formation. Therefore, the trend in large open-pit mines is to use high-energy blasting to increase conveying performance and crusher throughput. The increase in blasting energy concentration can threaten the integrity of the pit wall. In this paper, we aim to find a suitable plan to stabilize the pit deposit, through analyses of structural and lithological data on the pit walls, with an interpretation of the lateral and depth extensions according to the geological complexity of the deposit. Followed by an analytical treatment of the current pit parameters. Data processing included core classification, kinematic assessment of failure mechanisms based on visual observations on the exposed faces of the expected pit. The results of the laboratory tests were also used to define the rock mass parameters used to establish a stable slope design. The analyses showed the need for an effective strategy to ensure that the slopes won’t be damaged by blasting. This wall control strategy aims to produce a fragmented bulk ore pile and a slope as designed and in good condition. A good understanding of the failure mechanisms is necessary to ensure better monitoring of the rock slopes of the M'HAOUDATT pit.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133340659","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}

引用次数: 0

MPPT Based on Adaptive Neuro-Fuzzy Inference System (ANFIS) for a Photovoltaic System Under Unstable Environmental Conditions 不稳定环境下基于自适应神经模糊推理系统(ANFIS)的光伏系统最大功率跟踪

American Journal of Energy Engineering Pub Date : 2021-09-03 DOI: 10.11648/J.AJEE.20210903.12

Pascal Kuate Nkounhawa, D. Ndapeu, B. Kenmeugne

{"title":"MPPT Based on Adaptive Neuro-Fuzzy Inference System (ANFIS) for a Photovoltaic System Under Unstable Environmental Conditions","authors":"Pascal Kuate Nkounhawa, D. Ndapeu, B. Kenmeugne","doi":"10.11648/J.AJEE.20210903.12","DOIUrl":"https://doi.org/10.11648/J.AJEE.20210903.12","url":null,"abstract":"Many algorithms have been used to track the MPP in a PV generator. Although these algorithms have proved their worth, the fact remains that they still have limits in terms of stability, response times and significant presence of oscillations, especially for sub-Saharan conditions where the climate variation is very sudden and has a considerable impact on the power delivered at the generator output. In this article, the objective is to develop an MPPT controller based on an Adaptive Neuro-Fuzzy Inference System (ANFIS) to improve the performance of the Felicity Solar type FL-M-160W photovoltaic module submitted to varying environmental conditions. The specifications of the FL-M-160W module are used to analyze and model the PV generator and boost converter located between the panel and the load in Matlab / Simulink. After the experimental tests, a database was set up to develop the neurofuzzy controller. The proposed ANFIS model was tested and validated under the Matlab / Simulink environment and then inserted into the PV system. The optimum voltage Vopt provided by this model is compared to the reference voltage Vpv provided by the PV generator and the error obtained is used to adjust the duty cycle of the DC-DC boost converter. After simulations, the results obtained reveal a good performance of the ANFIS controller compared to conventional P&O, InC and HC controllers in terms of stability, convergence speed, accuracy, robustness, and response time even under unstable environmental conditions with an efficiency of about 98%.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129595940","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}

引用次数: 0

Dynamic Thermal Study of a Building Insulated with Local Biosource Materials and Analysis of Consumption 本地生物源材料保温建筑动态热研究及能耗分析

American Journal of Energy Engineering Pub Date : 2021-06-08 DOI: 10.11648/J.AJEE.20210902.14

Guy Clarence Sèmassou, Jean-Louis Comlan Fannou, Edmond Claude Vodounnou, Mèdéhou Elogni Segbotangni, K. V. Chegnimonhan

{"title":"Dynamic Thermal Study of a Building Insulated with Local Biosource Materials and Analysis of Consumption","authors":"Guy Clarence Sèmassou, Jean-Louis Comlan Fannou, Edmond Claude Vodounnou, Mèdéhou Elogni Segbotangni, K. V. Chegnimonhan","doi":"10.11648/J.AJEE.20210902.14","DOIUrl":"https://doi.org/10.11648/J.AJEE.20210902.14","url":null,"abstract":"The quality of infrastructure, including buildings, is an indicator of a country's development status. However, it must be noted that these buildings entail high energy costs and also contribute to the global greenhouse effect. The building sector is therefore a crucial issue in terms of adapting to climate change because it is at the heart of a dual energy and environmental problem. To address this challenge, energy efficiency policies are increasingly being adopted worldwide, with the aim of improving the energy performance of buildings. In the present work, the thermo-physical properties of four types of materials, namely: \"cement and roast fibre\" composite, \"cement and rice husk\" composite, \"agglomerate\" and \"cement and bar soil\" composite, were exploited to implement thermal simulations under TRNSYS environment. The aim was to determine the thermal contributions of the walls built with these materials and those allowing a better comfort in the building by estimating and comparing the energy needs of the proposed variants with those of the reference building. The study showed that the walls made of \"cement and rice husks\" composite and \"cement and roast tree fibres\" composite allow to reduce respectively by 20% and 11%, the cooling needs linked to air conditioning for the living room, and respectively by 32% and 27% for the bedroom, compared to the reference building made of agglomerate (with a thickness e= 0.15 m). For the walls made of \"cement and earth bar\", the cooling requirement increased by 31% for the living room and decreased by 5% for the bedroom, compared to the \"chipboard\" reference building. Furthermore, the TEWI evaluation showed that the \"cement and rice husk\" and \"cement and roast fibre\" composites have a lower environmental impact.","PeriodicalId":326389,"journal":{"name":"American Journal of Energy Engineering","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116022955","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}

引用次数: 0