Source Of Electricity Generation Research Articles

A Study of The Characterization of Purified Fly Ash from Xi’an Linyuan Silica Limited

Coal is a well-known source of electric power generation all over the globe. Pulverized coal combustion and fluidized coal bed combustion are the two conventional methods involved in the combustion of coal in thermal power plants. Pulverized coal combustion is operated at >14000C while the fluid bed is operated at a temperature between 850-9000C. The first two reactions are the main reactions in the coal combustion process and they are exothermic reactions. CO2 and CO are the first two combustion products. The inorganic minerals in coal are released as waste products in the combustion plants in which fly ash made a large part of the waste materials. Fly ash is formed due to the incomplete combustion of coal. The fly ash from both methods contains SiO2, Al, etc, which are significant constituents. High-grade coal has a higher SiO2 than the low grade. An experiment was conducted by preparing four samples of fly ash heated at 5000C, 6000C, 7000C, and 8000C, and one unheated sample to investigate the chemical composition of the fly ash obtained from Xi’an Linyuan Silica Limited and to prove its suitability as raw material for the fabrication of refractory composites. SEM, EDS, XRD, and FTIR characterization were done on all five samples to determine the chemical parameters of the fly ash. According to the result and analysis of the four characterizations, it was discovered that the fly ash used in this research contains SiO2. SEM/EDS morphological analysis reveals the presence of spherical and a few geometrical crystalline-shaped structures known as cenospheres. Cenospheres are important components for the synthesis of refractory composites. The EDS micrographs show the percentages of silicon and oxygen in the fly ash. The FTIR results show Si-O-Si stretching in all the fly ash prepared samples. In the XRD, it was discovered that the fly ash was purely SiO2.

Electrification of New Zealand transport: Environmental impacts and role of renewable energy

New Zealand's goal to be carbon neutral by 2050 has led to the development of strategic policies and schemes to encourage the use of electric vehicles (EVs). However, most studies are focused on the greenhouse gas emissions of EVs while limited studies are available on their other potential environmental impacts. Using life cycle assessment (LCA), the environmental impacts of EV adoption, specifically the battery electric vehicle (BEV), were assessed to determine the future environmental challenges for New Zealand. Due to 87.1 % share of renewable sources of electricity generation in New Zealand in 2022, EV adoption has demonstrated its strong potential to reduce the CO2 emission of the transport sector. Results showed that lithium-ion battery (LIB), including production and disposal, is the major contributor to the environmental impacts of BEV adoption. The direct environmental impacts of BEV in New Zealand range from 0.34 % to 42.5 % across its life cycle. The results are sensitive to the assumptions of the driving range and number of LIB replacements where they could increase up to 34.5 % per km and up to 48.9 % per replacement of LIB on environmental impacts, respectively. Scenario analysis also showed that when the renewable energy share in electricity production is increased to 100 %, the environmental impacts of the BEV life cycle could be reduced by up to 14.5 % while it could decrease by up to 69.6 % in New Zealand. Additionally, reusing the spent LIB for other purposes would have the least environmental impacts on disposal among the options considered in the study. Therefore, New Zealand would benefit the most from BEV adoption by generating 100 % electricity from renewable sources, and developing policies and schemes to repurpose LIB at its end of life.

Novel Spinel Nanomaterials for Photocatalytic Hydrogen Evolution Reactions: An Overview

The energy demand generated by fossil fuels is increasing day by day, and it has drastically increased after the COVID-19 pandemic as industries and household utilities rejuvenate. Renewable sources are thus becoming more essential as easily available, alternative methods of low-cost energy generation. Among these renewables, solar energy, i.e., solar power, is a promising energy source and can be used for solar-based H2 evolution because H2 technology is a leading source of eco-friendly electricity generation, and most of the worldwide efforts to develop this method involve heterogeneous catalysis for H2 evolution via water splitting and its storage, i.e., using a fuel cell. In the current scenario, there is a need to develop a stable, recyclable, and reusable heterogeneous catalyst system, which is a great challenge. In the current study, we have focused on novel ferrite magnetic nanomaterials for recyclable and reusable robust photocatalysis. Moreover, discussions of the factors contributing to the photocatalytic hydrogen evolution, low-cost synthesis techniques, and prospects for making them ideal photocatalysts are uncommon in the literature. The study will impart possible approaches for the design and development of novel ferrite nanomaterials and their nanocomposites for H2 generation in the forthcoming years.

Water taxation strategies for the natural gas sector in North America: Facing a rising water crisis

Natural gas, a high water-intense technology, has become the primary source of electricity generation in the United States. Its exploitation allowed energy independence to the region and exposed the rising water crisis, given the high correlation between shale gas plays locations and high water-stressed areas. This study developed an integrated framework, coupling NANGAM, a long-term partial equilibrium model, and the Aqueduct platform, which assesses water scarcity. The contribution of this study is twofold. First, a market-based coupled framework was developed for regulating water usage in the natural gas market. Second, water taxation strategies are proposed for the natural gas market, analyzing their effect and highlighting differences regarding a business-as-usual scenario. Results show significant transformations in production and distribution strategies across North America are needed to address the rising water crisis. Mexican production will be particularly affected since water scarcity is severe there, dropping up to 15% by midcentury compared to a business-as-usual scenario. West South Central’s production will barely increase despite rising Mexican imports. The Middle Atlantic’s production will increase up to 4.2%, incrementing the domestic American trade, mainly in the south. Similarly, Canada’s production will increase up to 10.7% to supply the northern and Pacific regions’ demand.

Development and lifecycle assessment of various low- and high-density polyethylene production processes based on CO2 capture and utilization

This work focuses on the design and analysis of innovative environmentally friendly pathways to produce low-density polyethylene and high-density polyethylene, as the main feedstock of petrochemical industries, based on CO2 capture and utilization. For each polymer, the process development and simulation of the proposed pathways are performed using Aspen Plus. Each pathway includes the following units: CO2 capture from flue gas, hydrogen production via electrolysis of water, methanol production, olefin production, and polymerization of ethylene. Moreover, the greenhouse gas emissions of the proposed pathways are compared to those of the conventional method i.e., steam cracking. The midpoint and endpoint lifecycle assessment of each pathway are conducted using TRACI 2.1 and ReCiPe Endpoint (H, A) lifecycle impact assessment methods in the OpenLCA software, respectively, for various geographical locations, electricity sources and assessment scenarios for the incorporation of the by-products. The lifecycle assessment results show that the new pathway is an environmentally attractive option, particularly in regions where renewable (low-carbon) electricity is more prominent, such as Quebec and Ontario provinces in Canada. In such regions, negative CO2 emissions, as low as −6.1 kg CO2eq/kg polymer, can be achieved. However, in locations where coal or natural gas are the main sources of electricity generation, such as Alberta, lifecycle emissions increase to 20 times the emissions of the conventional method. Furthermore, the impact of incorporating alternative methanol production processes is evaluated. Results show that using the tri-reforming of methane as an effective syngas production technology from CO2 and natural gas can reduce the lifecycle greenhouse gas emissions by up to 94% and 62%, compared to the conventional high- and low-density polyethylene production pathways.

A comparison of the power potential for surface- and seabed-deployed tidal turbines in the San Juan Archipelago, Salish Sea, WA

The San Juan archipelago lies along the axis of tidal movement between Straits of Juan de Fuca and Strait of Georgia in the Salish Sea. The amplitude of the tidal exchange produces significant tidal currents between the islands, as well as in Rosario Strait to the east and Haro Strait to the west. These currents are of interest as a future source of electrical power generation, given the archipelago’s dependence on electricity supply by a subsea cable from the United States mainland. Here, we evaluate the tidal current energy potential in this region through a re-analysis of measurements collected by the National Ocean Service (NOS) and a high-resolution numerical model. Given the considerable variations in water depth and vertical velocity profiles across candidate tidal energy sites, we consider the trade-offs between tidal turbines deployed from a floating platform and those anchored to the seabed. Measurement re-analysis indicates several locations that could support tidal current power generation by MW-scale turbines with an acceptable balance between turbine size, rated power, and capacity factor. Even for relatively large (30 m) turbine diameters, surface-deployed turbines would be expected to produce up to 30 % more electricity than the same turbine deployed near the seabed due to vertical shear, with this difference increasing for smaller diameter turbines. As anticipated for sparse measurements, the regional simulation identifies several locations with power generation potential more than twice as high as locations in the measurement re-analysis. These sites were either not surveyed or excluded due to data quality issues. A benchmark comparison at the measurement locations with the highest power generation potential shows relatively good model fidelity, though time-average power density disagreements of ± 50 % persist throughout the water column. In addition to the case study, we also treat three general considerations for measurement data: (1) the accuracy of energy generation estimates from hub height speed relative to rotor-averaged power density, (2) the feasibility of extrapolating profiles towards the surface and seabed, and (3) trends in energy generation with rotor size and position in the water column. Overall, these results demonstrate that models and measurements can be used in a complementary manner for tidal energy site assessment and that tidal currents could be an important source of electricity generation in the San Juan archipelago.

Design analysis and control of step‐up converter with reduced switch stress

SummaryIn light of the increasing share of renewable energy sources (RES) in electricity generation, the research community is directing their attention toward developing highly efficient DC‐DC high‐gain step‐up converters. These converters are designed to exhibit reduced voltage stress on the switching devices (semiconductors). This paper presents a comprehensive study of a switch voltage stress‐reduced step‐up converter that offers a range of additional features, including the availability of a common ground point, continuous input current, simple two‐mode continuous conduction mode (CCM) operation, wide duty cycle range, and quadratic boosting factor. To achieve the aforementioned features, the converter utilizes two switches with the same operating modes, eliminating the need for complex switching circuitry. Operational modes, steady‐state analysis, and design considerations have been presented in detail. Comparative analysis indicates that the voltage conversion ratio per number of devices in the proposed topology is significantly higher than that of similar topologies. In addition, the voltage stress of switches is considerably less than the topologies addressed in the literature. The study further includes detailed mathematical and experimental analyses, small signal analysis, and hardware implementation to support the theoretical findings. The converter's efficiency has been thoroughly analyzed along with thermal analysis to ensure its reliability.

Raising the Resilience of Industrial Manufacturers through Implementing Natural Gas-Fired Distributed Energy Resource Systems with Demand Response

The use of relatively small-scale distributed electric power generation sources is one of the key focus areas in the development of global industry and regional power generation. By integrating distributed generation sources into their on-site energy infrastructure, industrial consumers gain new characteristics and possibilities as entities of the power system that do not only consume power, but in fact can flexibly generate and deliver electricity to local and even centralized grids. This type of entity is called a distributed energy resource system with demand response (Russian: ‘active energy complex’). The purpose of this study is to lay the methodological foundation for the use of distributed energy resource systems with demand response in industrial sites under existing gas and power market conditions and for ensuring the synchronization of parameters that is necessary for managing complex energy consumption. This article provides an empirical study of the principles of the natural gas pricing under the demand volatility of regional markets and the Russian Mercantile Exchange. The article outlines the key drivers, as identified by the authors, that impact gas consumption by a distributed energy resource system, including demand characteristics, limitations and capacity of the gas network and the mode of gas consumption by an industrial enterprise and its generator. Accounting for all of these factors is essential for effective management and proper operational adjustment of a distributed energy resource system with demand response. The result of the study is a proprietary model and a tool for the management of distributed energy resource systems in integration with the gas demand management, which analyze the internal and external parameters of the industrial entity’s operations and its distributed energy resource system, as well as factors existing in the integrated distributed energy system where the consumer is able to buy natural gas in various market segments. The proprietary tool of distributed energy resource system management is based on the centralized control system, which combines performance analytics, operational scheduling of production and the distributed energy resource system, price planning for the wholesale and retail power markets, regional gas markets and exchange, monitoring all elements of the system, and assessment of different active energy management scenarios under various external and internal conditions impacting production and energy demand. Our proprietary tool has been successfully tested in a typical industrial site and was reported to deliver a significant electricity and gas cost-saving effect, which amounted to an 18 percent reduction in the total energy costs of the company, or more than USD 2.6 million per year. The resulting saving effect can recoup the costs of investing in a distributed energy resource system, including construction and installation of the local grid and automation infrastructure, and can be obtained in any country of the world.

Benefiting from energy-saving luminophores technology in designing sustainable luminous outdoor ads

At a time when the world is living on the impact of a major energy crisis, and the threats of gas interruption, Egypt was able within a few years to establish various sources of electricity generation, but despite that, scientific efforts continue to reach and make optimal use of renewable energy sources, which is the motive that drives the whole world to obtain clean energies and replace non-renewable energies with clean and environmentally friendly ones. Although the idea is not new, implementing it with local materials makes the implementation of this innovation affordable, especially in a country that is trying to advance economically by rationalizing its resources and using them optimally in order to enhance safety on the streets and highways. There is no doubt that advertising should participate in all areas of life, even in technological developments, inventions and various innovations. This research paper seeks to promote and integrate advertising with environmentally friendly technology to save energy consumption through street lighting with advertisements as a kind of renewal and development in quality and method instead of traditional advertising, which in turn will help reduce energy consumption, increase promotion and advertising environmental awareness among all the audience and advertisers at the same time. Some examples were discussed and clarified about the use of luminous luminophores in advertising, rationalization of electricity consumption and lighting poles and roads, in addition to making an applied part as some hypothetical examples of the form of advertising with this technology. This paper follows the descriptive approach in collecting theoretical information related to technology and its role in transforming outdoor advertisements into giant advertising systems for street lighting, followed by a presentation of some global luminous concrete models that used this innovative technology in some other fields

Trading in local markets: A review of concepts and challenges

With the development of decentralized sources of electricity generation, different ways of organizing electricity exchanges at the local level have been developed. The literature has studied extensively over the past decade how local exchanges can take place. This has resulted in different concepts reflecting different perimeters of study. However, the perimeters of these different concepts are not always well defined in the literature, which can lead to some con- fusion about the organization of the local market under study. There is a lack of harmonization because different terms may be used for the same concept or the same term may be used for several concepts. This paper aims to propose a harmonization of the different concepts for the study of local markets including local energy markets, peer-to-peer trading, local flexibility markets, microgrids, energy communities and transactive energy. These concepts are com- pared by identifying the characteristics of each. For this purpose, a literature review was per- formed in order to understand the context in which these concepts emerged and to identify their specific characteristics. Moreover, this paper proposes to analyze the economic challenges of local exchanges by identifying the economic incentives and solutions developed to make business models viable.

Equilibrium analysis for prosumer’s participation in joint electricity and carbon markets

The current electricity system has a large number of carbon emissions. As an environmentally friendly and low-carbon electricity generation source, distributed energy sources gradually get more and more attention. However, the participation of a large number of distributed energy sources brings uncertainty to the operation of the electricity market. Prosumers could effectively avoid the instability caused by the participation of distributed energy sources in the electricity market. At present, the strategy of the prosumer participating in the electricity market has been thoroughly studied. However, equilibrium analysis for prosumer’s participation in joint electricity and carbon markets still needs to be studied in depth. Therefore, we propose a method for the prosumer to participate in the joint electricity and carbon markets, which could effectively reduce carbon emissions. First, we build a carbon market model. Then, the equilibrium model of the prosumer’s participation in joint electricity and carbon markets is constructed. The equilibrium model can realize the equilibrium between the coordination of prosumers and joint markets. Finally, we adopt an iterative algorithm to solve the equilibrium model. Prosumers and joint electricity and carbon markets transmit marginal information to each other. According to the marginal information. The equilibrium between Prosumer and joint markets is solved through iteration by self-optimization and self-decision. Case studies based on the IEEE 30-bus system verify the effectiveness of the model and method proposed in this paper.

Performance Assessment of Solar PV Power Plant with Pvsyst Simulation Tool

In India the energy generation trend has shifted rapidly towards renewable energy sources in recent years. Since the tropical climate condition of the country favors the capability of renewable energy sources and among them direct use of solar radiation and wind can be harnessed effectively to increase the energy capacity. Solar is the most secure, copious and non-polluting source of energy. Simple and direct conversion mechanism of photovoltaic system captures has emerged it as a global player in non-polluting sources of electricity generation. The PV power plant located at Mechanical Engineering Department of SKIT, Jaipur is studied to evaluate the performance under the composite climate condition. The performance indices include the energy and economic parameters such as reference, array, final yield net present value, cost of energy and money payback period. The analysis involves a simulation tool PVsyst. The energy parameters found for the installed capacity also involve performance ratio, calculated throughout the year. The result shows the final yield for the plant as 4.5 kWh/kWp/day. The economic evaluation shows the money payback period as 4.3years. Key Words: Photovoltaic, economic evaluation, PVsyst, reference yield, temperature loss

Novel Lyapunov-based rapid and ripple-free MPPT using a robust model reference adaptive controller for solar PV system

The technological, economic, and environmental benefits of photovoltaic (PV) systems have led to their widespread adoption in recent years as a source of electricity generation. However, precisely identifying a PV system's maximum power point (MPP) under normal and shaded weather conditions is crucial to conserving the maximum generated power. One of the biggest concerns with a PV system is the existence of partial shading, which produces multiple peaks in the P–V characteristic curve. In these circumstances, classical maximum power point tracking (MPPT) approaches are prone to getting stuck on local peaks and failing to follow the global maximum power point (GMPP). To overcome such obstacles, a new Lyapunov-based Robust Model Reference Adaptive Controller (LRMRAC) is designed and implemented to reach GMPP rapidly and ripple-free. The proposed controller also achieves MPP accurately under slow, abrupt and rapid changes in radiation, temperature and load profile. Simulation and OPAL-RT real-time simulators in various scenarios are performed to verify the superiority of the proposed approach over the other state-of-the-art methods, i.e., ANFIS, INC, VSPO, and P&O. MPP and GMPP are accomplished in less than 3.8 ms and 10 ms, respectively. Based on the results presented, the LRMRAC controller appears to be a promising technique for MPPT in a PV system.

Techno-Economic Feasibility Assessment for the promotion of Grid-Connected Rooftop PV Systems in Botswana: A Case Study

The main aim of the present study is to investigate the solar energy potential and evaluate the economic viability of a 5kW grid-connected rooftop photovoltaic (PV) system as an electricity generation source in three selected regions (Gaborone, Maun, and Tshabong) in Botswana for the first time. In this study, NASA POWER data were used for evaluating the solar potential in the selected regions. The results showed that the selected locations are suitable for the installation of various scales of PV systems due to the high global horizontal solar radiation. RETScreen Expert software was used to assess the techno-economic feasibility of the proposed systems. The performance of the proposed systems with various PV technologies (mono-crystalline silicon and poly-crystalline silicon) is analyzed. Furthermore, economic and financial indicators such as net present value, annual life cycle savings, payback, benefit-cost ratio, and cost of energy production were calculated. The results indicate that the proposed system is very promising for all the selected locations. Additionally, it was found that the PV projects with poly-Si technology produced a large amount of energy and have a low electricity cost compared to mono-Si technology. The results suggest that grid-connected rooftop PV systems have a significant role in covering the electricity demand and in reducing carbon dioxide emissions, especially in high population density and rural regions. This study provides some useful recommendations for decision-makers regarding the development and deployment of PV energy technology in Botswana.

Drivers of renewable energy penetration and its role in power sector's deep decarbonization towards carbon peak

The power sector is a linchpin of global carbon mitigation goal, and renewables are increasingly the preferred source of new electricity generation globally. It is necessary to uncover the driving mechanism of renewable energy penetration and its impact on deep decarbonization of the power sector. To this end, this research utilizes the production-theoretical decomposition analysis to attribute the change in renewable electricity generation to nine drivers. Then, a system dynamics model is established to track the trajectory of carbon emissions in the power sector under multiple scenario settings of renewable energy penetration. Additionally, cross-country heterogeneity analysis is conducted between China, the USA, the UK, and Germany. The results indicate that: (1) The electricity consumption scale plays a decisive role in driving China's renewable electricity generation during 1995–2018, while electricity productivity and output productivity are the major negative contributors. (2) In the UK, the USA, and Germany, electricity productivity and output productivity act as the main promoters of renewable electricity generation. (3) The decline in China's two productivity effects is primarily attributed to the drop of technical efficiency. However, technology progress in these developed countries contributes to increasing the two productivity indexes. (4) The IRENA roadmap scenario (40%) is not enough to peak carbon emissions in China's power sector before 2030, while 46.3% of renewables in electricity generation is sufficient to achieve this goal. This research provides an insightful roadmap for facilitating renewable energy transition and decarbonizing the power sector.

Innovative sensorless dual-axis solar tracking system using particle filter

Renewable energy (RE), particularly solar photovoltaic (PV) systems, is a promising alternative to traditional energy sources for worldwide electricity generation. In recent years, PV generation capacity has increased rapidly due to a considerable reduction in installation costs. Nevertheless, in PV systems, energy generation is significantly less than the installed capacity due to the PV modules’ orientation. Hence, this study proposes an innovative solar tracking system to enhance PV energy generation. Previous research classified solar tracking systems into two categories: sensor-based and sensorless solar tracking systems. However, tracking performance inevitably deteriorates when implementing sensor-based solar tracking systems in low-visibility conditions. Conversely, sensorless solar tracking systems require substantial historical meteorological data based on geographic location and complex mathematical models estimating the sun’s position, increasing computational complexity. This study aims to overcome these difficulties by proposing a sensorless dual-axis solar tracking system that does not require historical meteorological data, complex mathematical models, and sun position sensors to track the sun’s position. Particle filter (PF), a robust sampling-based tracking algorithm, is applied to develop an innovative solar tracking strategy. Initially, a set of samples (also called particles) is generated as inputs to PF corresponding to the proposed tracking system’s orientation angles: daily and elevation angles. Next, PV power is captured as a measurement of each particle, and a weight associated with the PV power is estimated to represent each particle’s relative significance. Furthermore, each particle is estimated and updated recursively, considering its measurement to determine the sun’s probable position. The tracking strategy is terminated once the particles’ weights are equal, indicating that the optimal position has been achieved (convergence). A comparative study is conducted over 60 days under various weather conditions to evaluate the proposed tracking system’s performance compared with that of a fixed flat-plate system. The experimental results indicate that the proposed tracking system improves energy generation performance (after accounting for operational energy consumption) by 20.1% compared with the fixed flat-plate system.

2021 Texas Electricity Black-out Crisis: Root-cause Analysis and Recommendations

In this paper, we discuss the structure of the U.S power grid and various sources of electricity generation and potential vulnerabilities that the grid can face. We also discuss the role of Electric Reliability Council of Texas (ERCOT), the organization that is primarily responsible for managing electricity in Texas, and the sequence of events that led to the power crisis in Texas during February 2021. Finally, we do a root cause analysis for the power crisis and provide recommendations to minimize the impact of these type events on the Texas grid in the future.
 The paper is organized as follows: In section one, we discuss the energy sources, how the electricity grid in America works, and some potential vulnerabilities of the power grid. Section two is entirely devoted to an explanation of how ERCOT works in Texas. In section three we discuss the events that took place in February 2021 that led to blackout. In section four we discuss why did the events unfold and break down the causes. We also discuss advantages and disadvantages of the current structural elements of Texas electricity industry. In section five we offer some recommendations to remedy the situation.

Impacts of Renewable Energy Generation on Greenhouse Gas Emissions in Saudi Arabia: A Comprehensive Review

Over the last few years, the electric energy demand in the Kingdom of Saudi Arabia (KSA) has increased many folds due to several factors including increased population, industrialization, economic activities, and urbanization. The main source of electric power generation in KSA is the burning of petroleum products. Almost one third of greenhouse gas (GHG) emissions are contributed from the electric power generation sector, mainly, by burning diesel and natural gas. As a result, it makes it necessary to consider alternate forms of electricity generation in order to cut down emissions and to keep sustainable growth alive. The government has planned to diversify energy sources and suppliers. In recent years, energy generation from renewable sources including solar photovoltaic (PV), wind, concentrated solar power (CSP), biomass, geothermal, and tidal, has been given more importance. The ambitious Saudi Vision 2030 targets of 58.7 GW of power generation from renewable energy sources will cause a significant reduction in GHG emissions from the energy sector. This article systematically reviews the impact of renewable energy generation on GHG emissions. The detailed breakdown of GHG emission is discussed. Then, the status of renewable energy generation is investigated, focusing on the technical and economic potentials. The correlation of renewable energy generation and GHG emissions is then explained. The most distinguishing feature of this review is that it provides a comprehensive list of recommendations to reduce GHG emissions. The discussions and recommendations of this article will support decision makers, system planners, industry personnel, researchers, and academics to develop sustainable energy pathways for the Kingdom.

Calculation of the electrical efficiency of a parabolic solar collector dish using TEG technology

In this proposal study, the presentation of the thermoelectric generator, the power age by this framework is naturally companion. The objective of this task is to configure, fabricate, and test a limited-scale thermoelectric generator, as well as to explore a concentrator. Thermoelectric generator powered by solar energy, the objective of this review is to design, fabricate, and test a limited-scale sun-based concentrator. Solar Thermo Electric Generator (STEG) to add to the future improvement of STEGs as a practical sunlight-based nuclear power source in the purchaser market, is used in remote areas that are not equipped with electrical generation sources. The thermoelectric generator is built with a Peltier 12706 module, a heat sink made of aluminum, and copper with a fan, an antenna dish with a diameter of 85 cm that uses aluminum foil on a surface as a solar radiation reflector, and a programmed temperature difference monitor that includes: an LCD crystal screen 16*2, a microcontroller type pic16f676, a digital standard lm35 temperature sensor, and a small Vero Board. A solar power meter is used to calculate the intensity of solar radiation in W/m2. At 0 °C and 100 °C, all thermocouples are calibrated to within 1 °C. the result show the difference in solar radiation in different seasons greatly affects the temperature difference, which plays a key role in generating electric power through the TEC device. The value of temperatures in the summer seasons was up to 100° Celsius.

Can the new energy vehicles (NEVs) and power battery industry help China to meet the carbon neutrality goal before 2060?

China is working to boost the manufacture, market share, sales, and use of NEVs to replace fuel vehicles in transportation sector to get carbon reduction target by 2060. In this research, using Simapro life cycle assessment software and Eco-invent database, the market share, carbon footprint, and life cycle analysis of fuel vehicles, NEVs, and batteries were calculated from the last five years to next 25 years, with a focus on the sustainable development. Results indicate globally, China had 293.98 m vehicles and 45.22% worldwide highest market share, followed by Germany with 224.97 m and 42.22% shares. Annually China's NEVs production rate is 50%, and sales account for 35%, while the carbon footprint will account for 5.2 E+07 to 4.89 E+07 kgCO2e by 2021–2035. The power battery production 219.7 GWh reaches 150%–163.4%, whereas carbon footprint values in production and use stage of 1 kWh of LFP 44.0 kgCO2eq, NCM-146.8 kgCO2eq, and NCA-370 kgCO2eq. The single carbon footprint of LFP is smallest at about 5.52 E+09, while NCM is highest at 1.84 E+10. Thus, using NEVs, and LFP batteries will reduce carbon emissions by 56.33%–103.14% and 56.33% or 0.64 Gt to 0.006 Gt by 2060. LCA analysis of NEVs and batteries at manufacturing and using stages quantified the environmental impact ranked from highest to lowest as ADP > AP > GWP > EP > POCP > ODP. ADP(e) and ADP(f) at manufacturing stage account for 14.7%, while other components account for 83.3% during the use stage. Conclusive findings are higher sales and use of NEVs, LFP, and reduction in coal-fired power generation from 70.92% to 50%, and increase in renewable energy sources in electricity generation expectedly will reduce carbon footprint by 31% and environmental impact on acid rain, ozone depletion, and photochemical smog. Finally, to achieve carbon neutrality in China, the NEVs industry must be supported by incentive policies, financial aid, technological improvements, and research and development. This would improve NEV's supply, demand, and environmental impact.