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- 2018
- PV-wind-diesel-battery system
- Capacity optimization
- PSO algorithm
- Economic and technical indexes
- Electrical Engineering and Automation
- Wuhan university of technology
- SINOMACH Intelligence Technology Research Institute
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[IEEE 2018 IEEE Industry Applications Society Annual Meeting (IAS2018) - Portland, OR (2018.9.23-2018.9.27)] 2018 IEEE Industry Applications Society Annual Meeting (IAS) - Neural Network Based Irradiance Mapping Model of Solar PV Power Forecasting Using Sky Image
摘要： Indirect seismic economic loss not only impacts regional economic recovery policies but is also related to economic assistance at the national level. Due to cross-regional economic activities and the difficulty of obtaining data, it is difficult for the indirect economic loss survey to cover all economic activities. However, nighttime light in an area can reflect the economic activity of the region. This article focuses on the indirect economic losses caused by the 2008 Wenchuan earthquake and evaluation of the progress of restoration and reconstruction based on nighttime light images. First, the functional relationship between GDP and nighttime light parameters is established based on pre-earthquake data. Next, the indirect loss of the earthquake is evaluated by the nighttime light attenuation in the disaster area after the earthquake. Then, the capacity recovery, which is characterized by the brightness recovery process of the light area, is evaluated. Lastly, the process of light expansion in the disaster area is analyzed to evaluate the speed and efficiency of economic expansion.
关键词： economic recovery,Wenchuan earthquake,economic expansion,nighttime light images,Indirect seismic economic loss
更新于2025-09-23 15:23:52
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Preliminary analysis on thermodynamic and thermo-economic performance of a solar CPC-KCS hybrid system
摘要： Using solar collectors to actuate Kalina cycle system (KCS) for electricity generation has been an attractive way to take advantage of solar energy. Most of the existing research is about KCS integrated with flat plate collector, evacuated tube collector, or concentrating collectors; however, little research focuses on the KCS powered by compound parabolic concentrator (CPC). Considering the merits of CPC, a Kalina 11 cycle system which is directly powered by CPC, named as solar CPC–KCS hybrid system is studied as the research object. Energy, exergy and thermo-economic models are established to estimate the system performance by varying the solar radiation, evaporating temperature and concentration of working fluid. Results show that higher evaporating temperature improves thermal and exergy efficiency. There are optimal values of Te for maximum wnet, is, Te,opt = 422.15, 434.15, and 446.15 K, respectively, at Xr = 0.95, 0.93, and 0.91; while Te,opt = 443.15, 437.15, and 425.15 K at Xb = 0.8, 0.7, and 0.6. Higher Xr and lower Xb is generally favorable for system performance. But when Te ≥ 422.15 K, lower Xb is not beneficial to ηex improvement anymore. Additionally, once evaporating temperature exceeds 439.15 K, it is cost-effective to install a superheater to avoid erosion potential risk.
关键词： Kalina cycle,corrosion potential,thermo-economic analysis,compound parabolic concentrator
更新于2025-09-23 15:23:52
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Battery-assisted low-cost hydrogen production from solar energy: Rational target setting for future technology systems
摘要： The massive implementation of renewable energy requires sophisticated assessments considering the combination of feasible technology options. In this study, a techno-economic analysis was conducted for hydrogen production from photovoltaic power generation (PV) utilizing a battery-assisted electrolyzer. The installed capacity of each component technology was optimized for the wide range of unit costs of electricity from the PV, battery, and proton-exchange membrane electrolyzer. Leveling of PV output by battery, the necessary capacity of electrolyzer is suppressed and the operating ratio of electrolyzer increases. The battery-assist will result in a lower hydrogen production cost when the benefit associated with the smaller capacity and higher operation ratio of the electrolyzer exceeds the necessary investment for battery installation. The results from this study indicated the cost of hydrogen as low as 17 to 27 JPY/Nm3 using a combination of technologies and the achievement of ambitious individual cost targets for batteries, PV, and electrolyzers.
关键词： Techno-economic analysis,Technology roadmap,Off-grid production,Proton-exchange membrane electrolyzer
更新于2025-09-23 15:23:52
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[SpringerBriefs in Energy] Grid Parity and Carbon Footprint (An Analysis for Residential Solar Energy in the Mediterranean Area) ||
摘要： In the context of global warming, big cities’ atmosphere is always more contaminated and natural disasters in augmentation, solar energy, and more generally renewable energies are sources of great enthusiasm. Besides, thanks to recent improvements in technologies, the costs of photovoltaic (PV) have strongly declined in the last decades and are now accessible for particulars. The purpose of this project is then to study the economic profitability of solar energy for a residential use. A common and appropriate tool for this is the grid parity. This term, largely used in the literature, refers to the moment when producing electricity from solar modules will have the same cost than buying it from the grid. Grid parity depends mainly on the geographic position (as solar irradiation is very different from a place to another) and on the local electricity price. Consequently, a country with expensive electricity and a high rate of irradiation is more likely to reach grid parity soon. In the present study, the geographic framework chosen is the Mediterranean area, which includes countries with similar climates but with other differences sufficiently important to obtain interesting comparative results. The PV system used in the following model is a basic one since it does not include energy storage or resale to the grid, which gives a conservative perspective to the study. Extensive financial analysis is conducted in order to determine under which conditions it is the most profitable. The secondary objective is to evaluate the environmental impact of solar energy, mainly by carrying out carbon footprint analysis. It basically consists in comparing the emissions released by the manufacturing process of the modules to the reduction obtained thanks to its utilization. This study is first realized at an individual level and, then, is generalized at a national one in order to measure what could be the contribution of a massive investment in residential solar energy to the Paris agreement objectives.
关键词： Mediterranean area,Carbon footprint,Residential solar energy,Economic profitability,Environmental impact,Photovoltaic energy,Grid parity
更新于2025-09-23 15:23:52
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Innovation capability, network embeddedness and economic performance: profiling solar power innovators in China
摘要： This paper discusses the technological upgrading of China in photovoltaics technology. It explores the patterns of innovation and network embeddedness and their impact on economic performance at the firm level. Identifying the main innovators over 1995–2014 with patent and market share indicators, the landscape of their activities is inspected through two hierarchical cluster analyses in parallel: first, against the quantity, quality and diversity of patents, and second, against global-integration, component-size and position in technological knowledge networks. The resulting clusters are cross-related to understand their interrelations with age, size, turnover and productivity of actors. The multivariate analysis of variance shows a significant relationship between turnover and productivity. Global-integration in small-world networks is significantly related with economic performance. Quality of innovation shows higher importance than quantity and diversity. While specialisation in high-tech fields has positive impact on turnover, production-oriented firms with low-tech focus have higher productivity.
关键词： patent profiles,MANOVA,productivity,cluster analysis,concurrency matrix,technological upgrading,China,emerging economy,innovation system,solar photovoltaics,economic performance,network embeddedness patterns
更新于2025-09-23 15:22:29
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Regional Manufacturing Cost Structures and Supply Chain Considerations for SiC Power Electronics in Medium Voltage Motor Drives
摘要： With the growth in wide bandgap (WBG) semiconductors, specifically Silicon Carbide (SiC), the technology has matured enough to highlight a need to understand the drivers of manufacturing cost, regional manufacturing costs, and plant location decisions. Further, ongoing research and investment, necessitates analytical analysis to help inform development of wide bandgap technologies. The paper explores the anticipated device, module, and motor drive cost at volume manufacturing. It additionally outlines the current regional contributors to the supply chain and proposes how the base models can be used to evaluate the cost reduction potential of proposed research advances.
关键词： Wide bandgap,Supply chain,SiC,Wide-band gap,Wideband gap,Techno-economic,WBG,bottoms-up,Medium voltage,Motor drive,Wide band-gap,Analysis,Power electronics,Cost model
更新于2025-09-23 15:22:29
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A new TRNSYS type for thermosiphon flat-plate solar thermal collectors: validation and optimization procedure
摘要： This paper presents a new TRNSYS Type (called Type 99) which can be used for the energy assessment of thermosiphon Flat-Plate solar thermal Collectors (FPCs) for water heating. The accuracy of this new type is higher than the standard type (Type 45a) available in TRNSYS library, since the density and specific heat of water are estimated according to the operating fluid temperature. The results of a suitable experimental campaign are also presented for different commercial FPCs system layouts. The developed Type 99 is successfully validated, proven by the very good agreement achieved between the simulation and experimental results. By the new Type 99 a suitable Design of Experiment (DoE) analysis is carried out with the aim to assess the design and operating parameters mostly affecting the energy and economic performance of two types of FPCs. Specifically, collector pipe diameters, slope, storage tank volume, and thermal insulation thickness are investigated. The analysis is carried out for three case studies which refer to residential Domestic Hot Water (DHW) production applications and to three different European weather zones (Freiburg, Naples and Larnaca). For these case studies an optimization procedure is also carried out by varying the same design and operating parameters for two different objective functions: best energy behaviour [maximum Primary Energy Saving (PES)] and best economic performance [minimum Simple Pay Back (SPB)]. Interesting novel design criteria and encouraging economic results are obtained.
关键词： economic assessment,DoE analysis,Building solar thermal systems,dynamic energy performance analysis,experimental validation
更新于2025-09-23 15:22:29
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[IEEE 2018 International Conference on Wind Energy and Applications in Algeria (ICWEAA) - Algiers, Algeria (2018.11.6-2018.11.7)] 2018 International Conference on Wind Energy and Applications in Algeria (ICWEAA) - Optimal Sizing Of Hybrid PV/Wind Based Water Pumping System Considering Reliability And Economic Aspects
摘要： In rural areas, provision of drinking water is one of the most important requirements of living conditions, and most of these isolated areas are not connected to the electricity grid. Conventional technology solutions provided by diesel generators are costly because of high maintenance and fuel supply costs and have drawbacks related to noise and especially greenhouse gas emissions. New technological solutions provided by solar and wind water pumping systems are experiencing high growth rates in recent years. Because of their high initial capital cost, many studies on their optimal sizing have been carried out. In this paper, an optimal sizing model based on Loss of Power Supply Probability (LPSP) and Particle Swarm Optimization (PSO) is proposed. The main goal is to deal with the optimal sizing problem of hybrid PV-Wind-based water pumping system taking into account the techno-economic aspects. The developed method uses the PSO algorithm to find the optimal configuration of the studied hybrid system insuring minimum cost and satisfying a desired loss of power supply probability. A computing code is developed and a flexible graphical interface is designed.
关键词： PSO Optimization,LPSP,Techno-economic analysis,PV-Wind based water pumping
更新于2025-09-23 15:22:29
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Economic Analysis for Residential Solar PV Systems Based on Different Demand Charge Tariffs
摘要： It is well known that the use of photovoltaic (PV) systems helps to preserve the environment, produce lower levels of greenhouse gases (GHGs), and reduce global warming, however, whether it is economically profitable for customers or not is highly debatable. This paper aims to address this issue. To be comprehensive, three different types of buildings are considered as case studies. Then, these three buildings are modeled in EnergyPlus to determine the rate of energy consumption. Afterward, comparisons of various solar system sizes based on economic parameters such as the internal rate of return, the net present value, payback period and profitability indexing for various-sized PV systems are carried out. The results show that by the demand charge tariffs, using PV systems has no economic justification. It has been shown that even with neglecting further costs of the PV system like maintenance, by demand charge tariffs, it is not economically beneficial for customers to use the PV systems. Profitability index of all three buildings with various PV power systems is between 0.2 to 0.8, which are by no means is desirable. Moreover, it was found that bigger solar systems are less cost-effective in the presence of demand charges.
关键词： photovoltaic (PV) systems,economic analysis,energy in buildings,EnergyPlus
更新于2025-09-23 15:22:29
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Techno-economic impacts of using a laser-guided variable-rate spraying system to retrofit conventional constant-rate sprayers
摘要： Specialty crops, such as apples, are vulnerable to insects and pathogens, and require higher pesticide input than row crops, a significant fraction of which is off-target loss, causing adverse environmental and socio-economic impacts. An advanced laser-guided variable-rate sprayer (VRS) could improve spray deposition uniformity and minimize pesticide waste, while maintaining efficacy against insects and pathogens. Despite these merits, retrofitting a conventional sprayer with laser-guided variable-rate spraying functions adds to its cost. Thus, the objective of this study was to analyze the techno-economics of a conventional pesticide sprayer retrofitted with VRS, in comparison to a conventional constant-rate sprayer (CRS) for pesticide application during apple production. A techno-economic model was developed for the apple orchards covering areas of 4 and 20 ha, which are common orchard sizes in the USA. The model incorporated cost for operation, equipment, fuel use and labor during pesticide application. The data were obtained from field tests in orchards in Ohio, USA in years 2016 and 2017, literature, and the original VRS development team at USDA-ARS and Ohio State University. The results indicated that VRS can reduce pesticide costs by 60–67%, pesticide application time by 27–32% and labor and fuel by 28% compared to CRS. For larger orchards, VRS also reduced equipment requirement. Compared to CRS, overall annual pesticide application cost savings by using VRS were between $1420 and $1750 ha?1. The payback time for using VRS was estimated to be between 1.1 and 3.8 years for apple orchards between 4 and 20 ha, respectively, in Ohio.
关键词： Pesticide,Laser-guided variable-rate sprayer,Insects and pathogens,Techno-economic analysis,Apple orchard
更新于2025-09-23 15:21:01