Showing papers on "Electricity generation published in 2022"
TL;DR: In this paper , a case study of a real Combined Cycle Gas Turbine power plant is presented, in order to assess the impact of the hydrogen employment in terms of power output and emissions with respect to the current status of the plant fueled with 100% natural gas.
137 citations
TL;DR: In this paper, a case study of a real Combined Cycle Gas Turbine power plant is presented, in order to assess the impact of the hydrogen employment in terms of power output and emissions with respect to the current status of the plant fueled with 100% natural gas.
137 citations
TL;DR: In this article , the authors summarized the latest progress of thermoelectric materials and devices and discussed multiple strategies for improving the performance of TE materials via regulating carriers and phonons.
75 citations
TL;DR: In this article, the authors summarized the latest progress of thermoelectric materials and devices and discussed multiple strategies for improving the performance of TE materials via regulating carriers and phonons.
75 citations
TL;DR: A detailed literature study has been performed in this paper highlighting the challenges and strategies for utilization of ammonia as a fuel for compression ignition engines in dual fuel combustion mode with secondary fuels like diesel, dimethyl ether, kerosene, hydrogen and other alternate fuels.
73 citations
TL;DR: In this paper , a review of solar energy harvesting (SEH) technologies for PV self-powered applications is presented, including maximum power point tracking (MPPT) techniques and power management (PM) systems.
68 citations
TL;DR: In this article , the authors proposed a CNN-LSTM-CNN architecture for photovoltaic power generation, which merges two deep learning architectures, the long short-term memory and convolutional neural network (CNN), using a real-world dataset from Rabat, Morocco.
65 citations
TL;DR: Wang et al. as mentioned in this paper established a basic framework for the estimation of rooftop PV technical, economic and environmental potential in the old residential buildings of Nanjing City, and provided the prediction results for the development of rooftop photovoltaic (PV) development plan in Nanjing.
64 citations
TL;DR: In this article, a multi-generation system driven by geothermal energy, which produces electrical power, hydrogen, oxygen, and cooling, is proposed, appraised from thermodynamic and economic standpoints.
61 citations
TL;DR: In this article , the authors developed a power system expansion model to comprehensively evaluate changes in the electricity supply costs over a 30-year transition to carbon neutrality, and estimated that approximately 5.8 TW of wind and solar photovoltaic capacity would be required to achieve carbon neutrality in the power system by 2050.
Abstract: The Chinese government has set long-term carbon neutrality and renewable energy (RE) development goals for the power sector. Despite a precipitous decline in the costs of RE technologies, the external costs of renewable intermittency and the massive investments in new RE capacities would increase electricity costs. Here, we develop a power system expansion model to comprehensively evaluate changes in the electricity supply costs over a 30-year transition to carbon neutrality. RE supply curves, operating security constraints, and the characteristics of various generation units are modelled in detail to assess the cost variations accurately. According to our results, approximately 5.8 TW of wind and solar photovoltaic capacity would be required to achieve carbon neutrality in the power system by 2050. The electricity supply costs would increase by 9.6 CNY¢/kWh. The major cost shift would result from the substantial investments in RE capacities, flexible generation resources, and network expansion.
58 citations
TL;DR: In this article, the authors employed a system dynamics approach to examine the effects of renewable energy development in Iran in terms of carbon emissions and examined five distinct scenarios: increasing the feed-in tariff, eliminating fossil fuel power plant subsidies, gradually eliminating coal-to-renewable power plants subsidies, and two combined scenarios that consider the carbon cost of electricity generation.
TL;DR: In this article, a virtual synchronous generator (VSG) control for photovoltaic (PV) generation was introduced to provide frequency support without energy storage, where PV generation reserve a part of the active power in accordance with the pre-defined power versus voltage curve.
TL;DR: A hybrid teaching-learning-based optimization (TLBO) and crow search algorithm (CSA) is used to obtain a reliable optimal solution with a low standard deviation for flexible EH in the presence of renewable energy sources and active loads.
TL;DR: In this paper , the state-of-the-art and existing problems of the supercritical carbon dioxide (S-CO2) power technology are reviewed from the perspective of system analysis and component design.
TL;DR: In this article , a review article highlights the progress in 2D materials for salinity gradient power generation and discusses several types of 2D membranes with various nano-architectures.
Abstract: The electrical energy that can be harnessed from the salinity difference across the sea water and river water interface can be one of the sustainable and clean energy resources of the future. This energy can be harnessed via the nanofluidic channels that selectively permeate ions. The selective diffusion of cations and anions can produce electricity through reverse electrodialysis. Two-dimensional (2D) materials are a class of nanomaterials that hold great promise in this field. Several breakthrough works have been previously published which demonstrate the high electrical power densities of 2D membranes. The ion transportation can be either through the nano-sized in-plane pores or interlayer spacings of 2D materials. This review article highlights the progress in 2D materials for salinity gradient power generation. Several types of 2D membranes with various nano-architectures are discussed in this review article. These include atom-thick 2D membranes with nanopores, 2D lamellar membranes, 2D lamellar membranes with nanopores, 2D/one-dimensional (1D), and 2D/2D hybrid membranes. The fabrication techniques, physical characteristics, ion transportation properties, and the osmotic power generation of these 2D membranes are elaborated in this review article. Finally, we overview the future research direction in this area. It is envisioned that the research on 2D materials can make practical salinity gradient power generation one step closer to reality.
TL;DR: This paper proposes a robust dispatch model for integrated electricity and heat networks (IEHNs) based on PBIDR, constructed as a two-stage robust optimization problem to hedge the uncertainty of the wind power output, the ambient temperature, and thePBIDR.
TL;DR: Wang et al. as mentioned in this paper investigated the effect of clean energy development measured by the share of clean-energy generation in total electricity generation on CO2 emissions in China, and they found that the overall effectiveness of CO2 emission reduction effort in clean energy developing is partly undermined by the CO2 transfer effect.
TL;DR: In this paper, the authors used a PV power generation potential assessment system based on Geographic Information Systems (GIS) and Multi-Criteria Decision Making (MCDM) methods to investigate the PV power generator potential in China.
Abstract: Accurate assessment of the photovoltaic (PV) power generation potential in China is important for the reduction of carbon emission intensity and the achievement of the goal of Carbon Neutral. This study used a PV power generation potential assessment system based on Geographic Information Systems (GIS) and Multi-Criteria Decision Making (MCDM) methods to investigate the PV power generation potential in China. Firstly, the high spatial-temporal resolution and high-quality ERA5 data and related technical, geographic, and social factors were used to assess the theoretical power generation and land suitability of PV power generation. Then, the theoretical power generation and land suitability were comprehensively considered to evaluate the PV power generation potential of China in 2015. The results showed that the average suitability score of land in China is 0.1058 and the suitable land for PV power generation is about 993,000 km2 in 2015. The PV power generation potential of China is 131.942 PWh, which is approximately 23 times the electricity demand of China in 2015. The spatial distribution characteristics of PV power generation potential mainly showed a downward trend from northwest to southeast. Meanwhile, there were clear spatial dislocations between the PV power generation potential and the population distribution and electricity demand in China. In areas that accounting for about 75% of the PV potential, population and electricity demand only accounted for about 16% of the total population and total electricity demand in China. Besides, the degree of tapping PV potential in China is not high, and the installed capacity of most provinces in China accounted for no more than 1% of the capacity potential, especially in the PV potential-rich areas.
TL;DR: In this article , the authors used a PV power generation potential assessment system based on Geographic Information Systems (GIS) and Multi-Criteria Decision Making (MCDM) methods to investigate the potential of photovoltaic (PV) power generation in China.
Abstract: Accurate assessment of the photovoltaic (PV) power generation potential in China is important for the reduction of carbon emission intensity and the achievement of the goal of Carbon Neutral. This study used a PV power generation potential assessment system based on Geographic Information Systems (GIS) and Multi-Criteria Decision Making (MCDM) methods to investigate the PV power generation potential in China. Firstly, the high spatial-temporal resolution and high-quality ERA5 data and related technical, geographic, and social factors were used to assess the theoretical power generation and land suitability of PV power generation. Then, the theoretical power generation and land suitability were comprehensively considered to evaluate the PV power generation potential of China in 2015. The results showed that the average suitability score of land in China is 0.1058 and the suitable land for PV power generation is about 993,000 km 2 in 2015. The PV power generation potential of China is 131.942 PWh, which is approximately 23 times the electricity demand of China in 2015. The spatial distribution characteristics of PV power generation potential mainly showed a downward trend from northwest to southeast. Meanwhile, there were clear spatial dislocations between the PV power generation potential and the population distribution and electricity demand in China. In areas that accounting for about 75% of the PV potential, population and electricity demand only accounted for about 16% of the total population and total electricity demand in China. Besides, the degree of tapping PV potential in China is not high, and the installed capacity of most provinces in China accounted for no more than 1% of the capacity potential, especially in the PV potential-rich areas. • A GIS and MCDM based PV generation potential assessment system is proposed. • Theoretical power generation and land suitability is assessed. • Spatial characteristics of PV power generation potential is analyzed. • Clear spatial dislocations between PV power generation potential and population distribution and electricity demand.
TL;DR: The world's largest international fusion reactor facility called ITER is in an advanced stage of construction with the aim of demonstrating the scientific and technological success of fusion energy research for commercial production as discussed by the authors .
Abstract: Global warming is the ongoing rise in the average temperature of Earth's climate system. Over the past 50 years, the average temperature has increased at the fastest rate in recorded history due to uncontrolled generation of greenhouse gases. Nuclear power is low carbon energy, and it is contributing on a large scale to a low carbon economy and a green energy grid. 442 nuclear power reactors are operating worldwide generating 393 GWe of electricity providing continuous and reliable low carbon power. Nuclear electricity accounts for 11% of total global electricity generation, and this amounts to a third of the low-carbon electricity produced in the world. New innovations are taking place which make nuclear power a more affordable and attractive energy option. These include advances in large reactors, emerging technologies such as advanced fuel and small modular reactors, engineering breakthroughs extending the operational lifetime of existing reactors, and new developments in materials and better waste management. Fast breeder reactor technology has become a commercial reality and it helps not only in generating electricity, but also in producing more fuel than it consumes, besides burning nuclear waste more efficiently compared to any of the existing commercial reactor technologies. The Sun's energy is generated by nuclear fusion. Mastering nuclear fusion technology can guarantee energy security in terms of clean, safe and affordable energy. Nuclear fusion, and plasma physics research of very complex nature are being carried out in many countries. Fusion reactions have been successfully demonstrated although for a fraction of a second and without demonstrating a net gain of electric power. The world's largest international fusion reactor facility called ITER is in an advanced stage of construction with the aim of demonstrating the scientific and technological success of fusion energy research for commercial production. Fusion fuel is plentiful and easily accessible. It is expected that fusion energy is the pathway towards energy security for thousands of years. Nuclear fission and fusion reactors do not emit greenhouse gases into the atmosphere and play a major role in mitigating climate change.
TL;DR: In this article , the authors employed a system dynamics approach to examine the effects of renewable energy development in Iran in terms of carbon emissions and examined five distinct scenarios: increasing the feed-in tariff, eliminating fossil fuel power plant subsidies, gradually eliminating coal-powered plants subsidies, and two combined scenarios that consider the carbon cost of electricity generation.
TL;DR: In this article , the authors used thermoelectric conversion technology to recover industrial waste heat and designed a high-performance TEG, based on the characteristics of industrial environmental temperature, the power generation performance of the TEG of various sizes is analyzed by numerical calculation method.
18 Apr 2022
TL;DR: Zhang et al. as mentioned in this paper examined the role of economic complexity, non-renewables energy and renewable energy consumption on the ecological footprint in China over the period 1985Q1-2019Q4.
Abstract: China is known for its large industrial sector and diversified energy mix, which could contribute to environmental pollution, as fossil fuels remain China's main source of energy. With the recent drive by the Chinese government to achieve low carbon emissions and further reduce greenhouse gases, this study adds to the existing literature by combining the quantile-on-quantile (QQ) regression and non-parametric techniques to examine the role of economic complexity, nonrenewables energy and renewable energy consumption on the ecological footprint in China over the period 1985Q1–2019Q4. Overall, results show that renewable energy, non-renewable energy use, economic growth and economic complexity affects ecological footprint positively. In addition, the nonparametric causality outcomes revealed that renewable energy, non-renewable energy use, economic growth and economic complexity can significantly predict variations in ecological footprint at different quantiles. We are of the opinion that policymakers in this region should work on the pro-growth mentality of China, which is majorly fossil fuel-driven. This requires an immediate replacement with more eco-friendly sources and energy-saving technologies for economic activities. Otherwise, fulfilling the SDG 13 goals in China will be challenging. For a sustainable renewable energy investment, China should shift to ancillary and spot markets, where the low energy storage and low marginal cost of renewable energy could facilitate higher reduction in electricity cost and encourage higher trading of electricity.
TL;DR: In this paper, the authors showed that MoS2-based composites are capable of full-time function only relying on solar energy and water and demonstrated that the voltage output reveals a linear increase behavior through the series connection of energy generators.
TL;DR: In this article , the use of semi-transparent technologies based on crystalline silicon, thin-film photovoltaics, organic PVs, dye-sensitized solar cells (DSSCs), concentrating PVs (CPVs), and luminescent solar concentrators (LSCs) in open (arable farming lands) and closed (cultivation greenhouses) agrivoltaic systems was investigated.
Abstract: The world population and consequently the global need for food continue to grow. At the same time, areas will be used to generate clean electricity to cope with climate change and global warming. The combination of crop production and solar photovoltaics in the form of “agrivoltaic technology” offers advantages for both sides that provide an adequate, resource-efficient solution to the persistent problem of competition for arable lands. The implementation of agrivoltaic systems has been exponentially increased in recent years and reached the global installed capacity of 2.8 GW in 2020 from the initial capacity of 5 MW in 2012. The agrivoltaic systems installed worldwide mostly employ conventional opaque photovoltaic (PV) modules, causing a change in the microclimate under the panels that become critical when shading ratios are high. Semi-transparent PV (STPV) modules have been recently employed to mitigate this issue which is profoundly studied in this research by considering the use of semi-transparent technologies based on crystalline silicon (c-Si), thin-film photovoltaics, organic PVs (OPVs), dye-sensitized solar cells (DSSCs), concentrating PVs (CPVs), and luminescent solar concentrators (LSCs) in open (arable farming lands) and closed (cultivation greenhouses) agrivoltaic systems. The results indicated that c-Si STPV modules have the highest share of employment in agrivoltaic systems due to their extreme benefits of low costs, high stability, and high efficiency in comparison with other technologies, while in contrast, the use of thin-film STPV modules have been rarely reported in the literature. Additionally, STPV modules using OPVs and DSSCs offer the capability to achieve wavelength-selective transparency, causing the photosynthetic active radiation to pass through while the remained spectrum is utilized to generate electricity. Other potential solutions come from CPVs and LSCs, in which, diffuse light is available for the growth of cultivated plants, while direct concentrated sunlight can generate electricity. Although STPV modules are proven as a feasible solution for use in agrivoltaic systems, still more developments are required in terms of the modules’ efficiency enhancement and costs reduction, while more detailed research is required to observe the response of cultivated plants to make this technology a viable sustainable solution in the future.
Ho Chi Minh City University of Technology1, University of Split2, Ming Chi University of Technology3, Aristotle University of Thessaloniki4, Hanoi University of Science and Technology5, National Environmental Engineering Research Institute6, Diponegoro University7, Ho Chi Minh City University of Transport8
TL;DR: In this paper, the authors summarized the important knowledge and applications of MFCs, concurrently identifying the technological bottlenecks that restricted its vast implementation and economic analysis was also performed to provide multi-angle perspectives to readers.
TL;DR: In this paper , a review of the current renewable energy technologies such as solar energy, hydro energy, wind energy, bioenergy, geothermal energy, and hydrogen energy is presented.
TL;DR: In this article, two different cogeneration systems are proposed for cooling and power generation, where a gas turbine and an ejector refrigeration cycle are employed in the configurations, in which gas turbine cycle uses biogas as the required fuel.
TL;DR: In this paper , the authors summarized the important knowledge and applications of MFCs, concurrently identifying the technological bottlenecks that restricted its vast implementation, and performed economic analysis to provide multi-angle perspectives to readers.
TL;DR: In this paper, the authors presented a study conducted to quantify the carbon emissions associated to the production of electricity produced and used in European countries, based on a comprehensive methodology developed for this purpose.