Recent Studies on the Environmentally Benign Alkaline-Earth Silicide Mg2Si for Middle-Temperature Thermoelectric Applications

Shiojiri, Daishi; Iida, Tsutomu; Hirayama, Naomi; Imai, Yoji; Sugawara, H.; Kusaka, Jin

doi:10.3390/en15134859

Cited by 8 publications

(4 citation statements)

References 54 publications

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“…One promising approach involves enhancing the efficiency of conventional power conversion mechanisms through the implementation of waste heat recovery systems. This strategy not only addresses fossil fuel consumption but also mitigates its detrimental impact on climate change { [13] [14][15] }. Although waste heat recovery systems offer one solution, there are many other approaches too to reducing the fossil fuel consumption use and mitigating the greenhouse effect.…”

Section: Figure 1: Emission Gas Factormentioning

confidence: 99%

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Moomin,

Yousif,

Kazmi

2024

Preprint

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The energy demand and consumption requirements in Pakistan are facing significant challenges due to the recent gradual increase in population; intensifies the critical energy issues confronting the country. Additionally, energy consumption per capita in Pakistan has been steadily rising and is expected to continue increasing in the future. Buyers as a result need to buy such energy in order to produce other features too. The conventional energy globally is the primary energy usage for transforming these machineries function into different kinds of infrastructure methods instead of handmade designs which takes a lot of time duration. Crude oil and petroleum liquids have been the main principal to start these conventional generators and transportation automobiles into production. However, the carbon dioxide gas and other forms from these conventional energy generators has been increasing efficiency which is the main concern for energy generation in Pakistan and the rest of the world. Hence, Renewable Energy Sources (RES) such as solar photovoltaic (PV) and wind farming have been contributing a significant percentage of their daily energy needs. However, these energy has not had such standard rather than conventional energy such as fossil fuels regular. Thus, a microgrid hybrid containing Solar-Wind renewable and conventional generator are in need to produce sustainable Electricity in a small community. On one hand, solar-wind combine can produce energy with specify timing. On the other hand, there are expensive cost. This factor can have prominent issue such as frequent electricity blackouts and imbalanced energy provision across different regions. Therefore, the microgrid hybrid systems can evaluate these incorporating solar PV and wind power renewable energy sources and fossil fuel generators as an optimum feasibility cost. In addition, this optimum feasibility can provide predictable forecasts of these energy production in the future based on economic factors in the small community in Islamabad. This assessment can have HOMER software simulation which faced by challenges in order to explore sustainable solutions through the integration of renewable/conventional energy sources into the existing energy infrastructure.

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Section: Figure 1: Emission Gas Factormentioning

confidence: 99%

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Moomin,

Yousif,

Kazmi

2024

Preprint

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“…Therefore, researchers worldwide are searching for different methods to reduce or eliminate fossil fuel usage. Fossil fuels usage, and consequently its contribution to climate change, can be effectively reduced through the implementation of three distinct strategies: (a) enhancing the efficiency of conventional power conversion devices/systems through waste heat recovery [4][5][6]; (b) developing efficient energy conversion devices that are friendly to the environment, such as fuel cells [7][8][9]; and finally, (c) a shift toward renewable energies that comes from nature and have minimal negative effects on the environment [10][11][12]. In general, using renewable energy is the most attractive method as it could significantly decrease the usage of or even eliminate the reliance on fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Renewable Energy and Energy Storage Systems

et al. 2023

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The use of fossil fuels has contributed to climate change and global warming, which has led to a growing need for renewable and ecologically friendly alternatives to these. It is accepted that renewable energy sources are the ideal option to substitute fossil fuels in the near future. Significant progress has been made to produce renewable energy sources with acceptable prices at a commercial scale, such as solar, wind, and biomass energies. This success has been due to technological advances that can use renewable energy sources effectively at lower prices. More work is needed to maximize the capacity of renewable energy sources with a focus on their dispatchability, where the function of storage is considered crucial. Furthermore, hybrid renewable energy systems are needed with good energy management to balance the various renewable energy sources’ production/consumption/storage. This work covers the progress done in the main renewable energy sources at a commercial scale, including solar, wind, biomass, and hybrid renewable energy sources. Moreover, energy management between the various renewable energy sources and storage systems is discussed. Finally, this work discusses the recent progress in green hydrogen production and fuel cells that could pave the way for commercial usage of renewable energy in a wide range of applications.

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“…The efficiency of such a device can be estimated from the figure of merit of the materials Z , which is often coupled with the absolute temperature T to create the dimensionless figure of merit, ZT , which is calculated by ZT = S 2 /(κ·ρ), where S is the Seebeck coefficient, ρ is the electrical resistivity of the material, and κ is the thermal conductivity . Some of the materials that are interesting as thermoelectric materials are chalcogenides, − silicides, − Half-Heuslers, − and skutterudites. − In the past few years, chalcopyrites have also been investigated more closely. − …”

Section: Introductionmentioning

confidence: 99%

Transport Properties of Cd- and Ni-Doped CuIn(S,Se,Te)₂-Based Semiconductors

Sadia,

Lifshitz,

Sebaoun

et al. 2023

ACS Appl. Electron. Mater.

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Materials based on the chalcopyrite structure can form semiconductors with a wide range of properties. CuInX 2 , where X is S, Se, or Te, can be tuned by doping on sites such as the Cu site or the In site to change the amount of carrier concentration. One use for semiconductors such as CuInX 2 , with a wide array of doping options, is for thermoelectric applications. Thermoelectric materials are materials with the ability to convert thermal energy such as waste heat into useful electrical energy. By correctly doping CuInX 2 , it could allow for a high thermoelectric figure of merit, ZT, to be achieved. In this study, 0, 0.1%, 1%, and 5% Cd or Ni was used to dope on the In site or the Cu site, respectively. All samples showed single phase chalcopyrite structures. CuInS 2 showed n-type behavior throughout the doping range with both Cd and Ni acting as n-type dopants. CuInTe 2 showed p-type behavior throughout the doping range with Cd acting as an electron donor and Ni acting as an electron acceptor. CuInSe 2 showed n-type behavior, which changed to p-type due to both Cd and Ni acting as acceptors. It is possible that higher concentrations of Cd and Ni could still improve the thermoelectric properties of CuInS 2 with a maximum of ZT = 0.1 upon 5% Cd doping and of CuInSe 2 with ZT = 0.27 upon 5% nickel doping. CuInTe 2 was much more efficient with small amounts of Cd improving the ZT from 0.35 to 0.4.

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Recent Studies on the Environmentally Benign Alkaline-Earth Silicide Mg2Si for Middle-Temperature Thermoelectric Applications

Cited by 8 publications

References 54 publications

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Renewable Energy and Energy Storage Systems

Transport Properties of Cd- and Ni-Doped CuIn(S,Se,Te)₂-Based Semiconductors

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Recent Studies on the Environmentally Benign Alkaline-Earth Silicide Mg2Si for Middle-Temperature Thermoelectric Applications

Cited by 8 publications

References 54 publications

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Evaluation of Techno-Economic Design and Implementation of Solar-Wind Hybrid Microgrid System for a Small Community

Renewable Energy and Energy Storage Systems

Transport Properties of Cd- and Ni-Doped CuIn(S,Se,Te)2-Based Semiconductors

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Product

Resources

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Transport Properties of Cd- and Ni-Doped CuIn(S,Se,Te)₂-Based Semiconductors