by Jean Jude Domingo, Demba Diallo, Alain Kassine Ehemba and Moustapha Dieng
Original Research
This article presents the effect of wavelength and angular frequency on the capacity of a CIGS- based solar cell subjected to monochromatic illumination in frequency modulation. From the expression of the density of the minority charge carriers, phototension and capacitance are studied. A gap of 1.34 eV corresponding to a gallium proportion of 0.28 is chosen. The results found show that the efficiency of the capacity decreases with the increase of the wavelength.
American Journal of Energy Research. 2022, 10(1), 22-28. DOI: 10.12691/ajer-10-1-3
Pub. Date: December 25, 2022
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by Alec J. Ernst and Olusegun S. Tomomewo
Original Research
In 2021, the United States President, Joe Biden, launched an initiative to generate net-zero carbon emissions from the U.S. by 2050. In order to complete this task, commitments must be made to research the most efficient methods in production, transmission, and storage of alternative and renewable energy sources. Foreseen obstacles include capital costs,, environmental, wildlife, economical concerns, political agendas by state, fossil fuel prices, and concerns in greenhouse gas emissions. The development of sustainable, viable systems that promote health, safety, and economic growth must be coordinated with policy changes. The first step of the process at a local level is to baseline the production and consumption of the current energy systems in order to make an educated decision on which system or systems to utilize. If Missouri can expand its biomass energy generation mix, it will be able to drive down the current consumption to production ratio of 8:1, thus, expanding its overall energy mix and ultimately leaving the state in a position to sell energy to neighboring states. To test this hypothesis specifically, this writing investigates process risk, project value, design and building, decommission planning, flexibility, capacity, and adaptability. Journal entries, past issues, and projected issues have been rounded out to provide a projection for current and future success. This will better position Missouri to support the overall agenda of net-zero carbon emissions by 2050 as Missouri appears to be well-positioned to launch a successful wood-to-energy program and well prepared to minimize dependency on energy imports outside their state border.
American Journal of Energy Research. 2022, 10(1), 9-21. DOI: 10.12691/ajer-10-1-2
Pub. Date: December 04, 2022
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by Vincent Prodjinonto, Ayihaou Armand Djossou, Gérard Wilfried Adjahossou, Julien Adounkpe and Clément Ahouannou
Original Research
With a view to ensuring the sustainable development of Third World countries, the protection of mangroves is essential insofar as mangroves play an important role in the maintenance of ecosystems. Opting for sustainable development strategies and policies aimed at promoting the production of solar salt on tarpaulins in Africa will help achieve this objective while curbing the destruction of the mangrove. It is therefore for this purpose that the present research aims to develop a solar salt production device called solar brine dryer for the production of sea salt. The device is supported on the ground by a parallelepipedic granite block constituting the foundation of the whole and whose role is to store the heat and restore it in low sunlight. The side walls and the roof are made of polymethyl methacrylate (plexiglass). The different vertical faces are connected by posts which are made of aluminium. The device makes the production of salt sustainable and prevents any contamination due to contact with the sand. Also the results of simulation obtained thanks to the model of Luis and Jordan for the estimation of the solar irradiance and to the model of Rohwer for the calculation of the rate of evaporation, show that the device optimizes the production of salt with an average of 7.55 kg of salt per day in an area of 12 m2 against an average production of 1.4 kg of salt per day in an area of 250 m2 with the solar cover method.
American Journal of Energy Research. 2022, 10(1), 1-8. DOI: 10.12691/ajer-10-1-1
Pub. Date: October 22, 2022
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