Solar Compass最新文献

{"title":"Techno-economic viability of decentralised solar photovoltaic-based green hydrogen production for sustainable energy transition in Ghana","authors":"Louis Kwasi Osei ,&nbsp;Flavio Odoi-Yorke ,&nbsp;Richard Opoku ,&nbsp;Bismark Baah ,&nbsp;George Yaw Obeng ,&nbsp;Lena Dzifa Mensah ,&nbsp;Francis Kofi Forson","doi":"10.1016/j.solcom.2024.100068","DOIUrl":"https://doi.org/10.1016/j.solcom.2024.100068","url":null,"abstract":"<div><p>Transition to a sustainable energy supply is essential for addressing the challenges of climate change and achieving a low-carbon future. Green hydrogen produced from solar photovoltaic (PV) systems presents a promising solution in Ghana, where energy demands are increasing rapidly. The levelized cost of hydrogen (LCOH) is considered a critical metric to evaluate hydrogen production techniques, cost competitiveness, and economic viability. This study presents a comprehensive analysis of LCOH from solar PV systems. The study considered a 5 MW green hydrogen production plant in Ghana's capital, Accra, as a proposed system. The results indicate that the LCOH is about $9.49/kg, which is comparable to other findings obtained within the Sub-Saharan Africa region. The study also forecasted that the LCOH for solar PV-based hydrogen produced will decrease to $5–6.5/kg by 2030 and $2–2.5/kg by 2050 or lower, making it competitive with fossil fuel-based hydrogen. The findings of this study highlight the potential of green hydrogen as a sustainable energy solution and its role in driving the country's net-zero emissions agenda in relation to its energy transition targets. The study's outcomes are relevant to policymakers, researchers, investors, and energy stakeholders in making informed decisions regarding deploying decentralised green hydrogen technologies in Ghana and similar contexts worldwide.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"9 ","pages":"Article 100068"},"PeriodicalIF":0.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277294002400002X/pdfft?md5=8894c878960e1f8a487d4bc854b11797&pid=1-s2.0-S277294002400002X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139694097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of earth contact heating/cooling systems and a comparison of ground source heat pumps and earth air heat exchangers","authors":"Selen Cekinir ,&nbsp;Leyla Ozgener","doi":"10.1016/j.solcom.2024.100067","DOIUrl":"10.1016/j.solcom.2024.100067","url":null,"abstract":"<div><p>Countries should reduce greenhouse gas emissions and increase energy efficiency in alignment with the Paris Agreement and the European Green Deal. The adoption of environmentally friendly and low-energy systems, such as passive heating and cooling technologies, can significantly contribute to achieving this goal. The study covers the examination of new technologies ready for commercialization, economic developments to increase accessibility, scale-up of production to reduce costs, and notable case studies comparing ground source heat pump (GSHP) systems to solar building systems powered by earth-to-air heat exchangers (EAHE).</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"9 ","pages":"Article 100067"},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940024000018/pdfft?md5=54728412fe30cc18cf899b49bf04396c&pid=1-s2.0-S2772940024000018-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139637471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning for monitoring and classification in inverters from solar photovoltaic energy plants","authors":"Fabiola Pereira,&nbsp;Carlos Silva","doi":"10.1016/j.solcom.2023.100066","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100066","url":null,"abstract":"<div><p>The efficiency of solar energy farms requires detailed analytics and information on each inverter regarding voltage, current, temperature, and power. Monitoring inverters from a solar energy farm was shown to minimize the cost of maintenance, increase production and help optimize the performance of the inverters under various conditions. Machine learning algorithms are techniques to analyze data, classify and predict variables according to historic values and combination of different variables. The 140 kWp photovoltaic plant contains 300 modules of 255 W and 294 modules of 250 W with smart monitoring devices. In total the inverters are of type SMA Tripower of 25 kW and 10 kW. The 590 kWp photovoltaic plant contains 1312 Trina solar 450 W modules. In total the four inverters are SMA Sunny Tripower type of 110–60 CORE 2 with rated power of 440 kW were analyzed and several supervised learning algorithms were applied, and the accuracy was determined. The facility enables networked data and a machine learning algorithm for fault classification and monitoring was developed, energy efficiency was calculated and solutions to increase energy production and monitoring were developed for better reliability of components according to the monitorization and optimization of inverters.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"9 ","pages":"Article 100066"},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000346/pdfft?md5=8001d90dff56118300ab3e2716beec89&pid=1-s2.0-S2772940023000346-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138739382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in hydrogen production, storage, and fuel cell Technologies with an emphasis on inventions, innovations, and commercialization","authors":"Sage Sebastian ,&nbsp;Samantha Wijewardane ,&nbsp;Sesha Srinivasan","doi":"10.1016/j.solcom.2023.100065","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100065","url":null,"abstract":"<div><p>The future is bright for hydrogen as a clean, mobile energy source to replace petroleum products. This paper examines new and emerging technologies for hydrogen production, storage and conversion and highlights recent commercialization efforts to realize its potential. Also, the paper presents selected notable patents issued within the last few years. There is no shortage of inventions and innovations in hydrogen technologies in both academia and industry. While metal hydrides and functionalized carbon-based materials have improved tremendously as hydrogen storage materials over the years, storing gaseous hydrogen in underground salt caverns has also become feasible in many commercial projects. Production of “blue hydrogen” is rising as a method of producing hydrogen in large quantities economically. Although electric/battery powered vehicles are dominating the green transport today, innovative hydrogen fuel cell technologies are knocking at the door, because of their lower refueling time compared to EV charging time. However, the highest impact of hydrogen technologies in transportation might be seen in the aviation industry. Hydrogen is expected to play a key role and provides hope in transforming aviation into a zero-carbon emission transportation over the next few decades.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100065"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000334/pdfft?md5=94bc296e27435aeafda84fb4013ad29f&pid=1-s2.0-S2772940023000334-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential assessment of solar industrial process heating and CO2 emission reduction for Indian cement industry","authors":"Niranjan Sahoo ,&nbsp;Anil Kumar","doi":"10.1016/j.solcom.2023.100064","DOIUrl":"10.1016/j.solcom.2023.100064","url":null,"abstract":"<div><p>For the Indian cement sector, a simple approach is presented to evaluate the potential of solar industrial process heating (SIPH) and the resulting decrease in CO₂ emissions. The first step was to identify the locations of cement plants with their annual installed capacity and their annual actual cement production. After that, the yearly process heating requirement for the calcination process at each cement plant has been estimated using the actual annual cement production value. Finally, using the concept of a top-of-tower (TT) solar plant design, the total thermal energy that could be saved has been estimated as 771.35 Petajoule (PJ) /annum. Finally, the adoption of the SIPH system with storage is expected to mitigate CO₂ emissions by 45.2 MT (Megatons) annually. By utilizing renewable energy sources in the cement manufacturing process, energy consumption and CO₂ emissions will be reduced.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100064"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000322/pdfft?md5=5076c5858d35761de2e95dc948774a39&pid=1-s2.0-S2772940023000322-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case study of a neighborhood in Douala examining the technical feasibility of a hybrid renewable energy system connected to the grid for energy and oxygen production in the fight against respiratory diseases","authors":"Fendzi Mbasso Wulfran ,&nbsp;Dzonde Naoussi Serge Raoul ,&nbsp;Molu Reagan Jean Jacques ,&nbsp;Kenfack Tsobze Saatong ,&nbsp;Salah Kamel","doi":"10.1016/j.solcom.2023.100062","DOIUrl":"10.1016/j.solcom.2023.100062","url":null,"abstract":"<div><p>The world is increasingly focusing its attention on the rapid growth in electricity consumption, a concern shared by both industrialized and emerging nations. Meeting this escalating demand has become crucial, necessitating a shift towards sustainable energy use. Renewable energy sources have emerged as a popular choice for both off-grid and grid-connected installations as a means to bridge the efficiency gap. In this context, the present paper explores the potential of supplying electricity to a neighborhood in Cameroon comprising 100 homes through the integration of solar photovoltaic cells and electrolyzers. It is worth noting that Cameroon as a whole continues to grapple with severe social, economic, and physical challenges. Some regions within the country face significant obstacles in accessing quality healthcare, particularly for conditions like respiratory illnesses. This study employs an intelligent energy management method to design an optimal power flow control system, aimed at enhancing system stability during power outages and load fluctuations by effectively utilizing available storage capacity. The analysis was conducted using the Hybrid Optimization Model for Electric Renewable (HOMER) program. Our calculations reveal that a daily output of 0.123 kg mass of oxygen is produced, with renewable factor (RF) values indicating an 85.1 % integration of renewable sources, and the crucial parameter of Loss of Power Supply Probability (LPSP) reaching 0 %. These findings demonstrate that it is feasible for 100 homes to reliably generate and connect to the grid for electricity. Moreover, this research can serve as a solid foundation for the development of hybrid renewable energy systems to address the challenge of treating respiratory disorders such as COVID-19. These results underscore the significance of this study for various stakeholders, including decision-makers, policymakers, and investors in Cameroon and beyond. The ultimate goal is to promote national growth by improving socio-medical conditions.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000309/pdfft?md5=ae338d09ff9511a8e5649570bca4b3e4&pid=1-s2.0-S2772940023000309-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135614902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Techno-economic analyses of solar thermal process heat integration at South African beverage producers","authors":"Francois Rozon ,&nbsp;Johannes Koke ,&nbsp;Craig McGregor ,&nbsp;Michael Owen","doi":"10.1016/j.solcom.2023.100063","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100063","url":null,"abstract":"<div><p>South Africa's industrial sector relies primarily on coal and gas to meet process heat requirements (700–750 petajoules per annum). Much of this energy is used to fire steam boilers operated at less than 200 °C. This study determines the viability of solar thermal technologies as a replacement for fossil fuels for the supply of steam in large beverage facilities in South Africa. The Gauteng and Western Cape provinces are considered, which account for two-thirds of South Africa's beverage production. The sizing of collector fields and potential solar fractions are determined using typical ready-to-drink beverage packaging hall energy requirements. The cost of heat from parabolic trough collector systems is modelled using quasi-dynamic simulations in Polysun, and heat storage configurations are optimised. This study demonstrates that solar thermal projects would be viable alternatives to heavy fuel oil, diesel, gas, and even coal - should the cost of coal remain above US$250 /tonne (2020 real-term values). Transition to solar thermal energy for process heat in this sector is thus strongly recommended.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100063"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000310/pdfft?md5=7ce26dacd17f9e3ae9276531448c28b2&pid=1-s2.0-S2772940023000310-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134656579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of deep learning techniques for power generation prediction of industrial solar photovoltaic plants","authors":"Shyam Singh Chandel ,&nbsp;Ankit Gupta ,&nbsp;Rahul Chandel ,&nbsp;Salwan Tajjour","doi":"10.1016/j.solcom.2023.100061","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100061","url":null,"abstract":"<div><p>Varying power generation by industrial solar photovoltaic plants impacts the steadiness of the electric grid which necessitates the prediction of solar power generation accurately. In this study, a comprehensive updated review of standalone and hybrid machine learning techniques for PV power forecasting is presented. Forecasting solar generation is of importance for the sustainability of grid power and also to achieve the UN sustainable development targets by 2030. The comparison of techniques shows that grouping datasets based on input feature similarity, results in higher accuracy. Long-Short Term Memory (LSTM) is found to perform better than other deep learning networks for all time horizons. The Gate Recurrent Unit (GRU), with few trainings, is found to be better for small datasets than LSTM. Based on the more complicated data patterns, a novel architecture of the Deep Learning Network model, with the capability to analyze and forecast is presented considering factors influencing industrial solar power generation. The study is of importance to researchers, solar industry, and electricity distribution companies for sustainable development worldwide.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100061"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000292/pdfft?md5=b728437e5b5c2ef206b3100f007b9439&pid=1-s2.0-S2772940023000292-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92045824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of HelioPod™ mobility on concentrated solar thermal project economics","authors":"Stephen R. Clark,&nbsp;Craig McGregor","doi":"10.1016/j.solcom.2023.100060","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100060","url":null,"abstract":"<div><p>The production of heat for industrial processes is one of the significant contributors to greenhouse gas emissions, with the mining and minerals processing industry in South Africa as a substantial user of high-temperature process heat. South Africa produces 80 % of the world's manganese. The sintering of manganese in South Africa is fossil fuel intensive and emits nearly a million and a half tons of CO₂ per year. Concentrating Solar Thermal (CST) produces heat that can be utilised at a significantly lower cost than diesel firing, which is currently used for sintering. However, with CST being a nascent technology, most mining operations are reluctant to commit to its use. These risks can be minimised for the customer using an Energy Supply Company (ESCo or energy-as-a-service company) to provide heat to the mine.</p><p>For the ESCo, one of the most significant risks is the potential for the mining customer to terminate the contract before the end of the life of the CST energy supply asset. Using a solar field based on heliostats, such as the HelioPod™, that can be redeployed presents a level of insurance against this risk. In this analysis, the economic advantage of the HelioPod™ solar field-based CST system is compared to that of a conventional permanent pedestal-based heliostat field. The comparison was made assuming early termination of the contract and scenarios where the CST facility was redeployed once or twice during the nominal life of the facility. The discounted cash flow analysis shows that reusing the heliostat field leads to significant economic improvements. The study shows that the conventional permanent heliostat system reduces the project NPV@7 % by up to 28 % compared to the HelioPod™ system with one move in the project's life.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100060"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772940023000280/pdfft?md5=9e9df3e8489ae5621c8fb712045cbf2a&pid=1-s2.0-S2772940023000280-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92045823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative simulation between monofacial and bifacial PV modules under palestine conditions","authors":"Adel Juaidi ,&nbsp;Mahmoud Kobari ,&nbsp;Ahmad Mallak ,&nbsp;Ahmad Titi ,&nbsp;Ramez Abdallah ,&nbsp;Moath Nassar ,&nbsp;Aiman Albatayneh","doi":"10.1016/j.solcom.2023.100059","DOIUrl":"https://doi.org/10.1016/j.solcom.2023.100059","url":null,"abstract":"<div><p>During the last period, solar energy gained a lot of attraction and is expected to be the replacement for non-renewable energy due to its great potential and advantages, one of these advantages is that solar energy is scalable, which means it can be used on an industrial scale or lesser, another advantage is that solar energy is a clean source, this means it causes no pollution to the environment, in addition, solar energy is the future, as its cost is going down and non-renewable energy is becoming more and more expensive. This project aims to conduct a comparative analysis of the performance of bifacial and monofacial solar panels under diverse conditions. The investigation involves examining the influence of varying albedo levels and the type of surface beneath the PV panels, including sand, white paint, black asphalt, or artificial grass. The renowned software tool PVsyst will be employed to simulate and analyze PV systems. The location selected for this study is An-Najah National University in Nablus, Palestine. The PV panels will be oriented towards the true south, and a tilt angle of 28˚ will be employed. Through meticulous simulations and thorough analysis, this research seeks to provide comprehensive insights into the contrasting performance characteristics of bifacial and monofacial solar panels across different environmental contexts. The ultimate objective is to contribute valuable knowledge regarding the suitability and optimal utilization of these PV technologies. The study aims to evaluate and compare the electrical output, energy yield, and overall performance of bifacial and monofacial solar panels under different scenarios. The project will analyze factors such as the energy gain achieved by the bifacial panels due to rear-side irradiance reflection, the impact of albedo on the performance of bifacial panels, and the influence of shading on both panel types.</p></div>","PeriodicalId":101173,"journal":{"name":"Solar Compass","volume":"8 ","pages":"Article 100059"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50184502","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}