Investigation on Advanced Materials for Green Energy Development and Sustainable Industrial Processes

Author(s):  
Mazharul M. Islam
2021 ◽  
Vol 7 ◽  
pp. 137-148
Author(s):  
Anzhelika Karaeva ◽  
Elena Magaril ◽  
Vincenzo Torretta ◽  
Marco Ragazzi ◽  
Elena Cristina Rada

2014 ◽  
pp. 1550-1578
Author(s):  
Ahmed Elgafy

With the urgent need to harvest and store solar energy, especially with the dramatic unexpected changes in oil prices, the design of new generation of solar energy storage systems has grown in importance. Besides diminishing the role of the oil, these systems provide green energy which would help reducing air pollution. Solar energy would be stored in different forms of energy; thermal, electric, hybrid thermal/electric, thermochemical, photochemical, and photocapacitors. The nature of solar energy, radiant thermal energy, magnifies the role and usage of thermal energy storage (TES) techniques. In this chapter, different techniques/technologies for solar thermal energy storage are introduced for both terrestrial and space applications. Enhancing the performance of these techniques using nanotechnology is introduced as well as using of advanced materials and structures. The chapter also introduces the main features of the other techniques for solar energy storage along with recent conducted research work. Economic and environment feasibility studies are also introduced.


Author(s):  
Ahmed Elgafy

With the urgent need to harvest and store solar energy, especially with the dramatic unexpected changes in oil prices, the design of new generation of solar energy storage systems has grown in importance. Besides diminishing the role of the oil, these systems provide green energy which would help reducing air pollution. Solar energy would be stored in different forms of energy; thermal, electric, hybrid thermal/electric, thermochemical, photochemical, and photocapacitors. The nature of solar energy, radiant thermal energy, magnifies the role and usage of thermal energy storage (TES) techniques. In this chapter, different techniques/technologies for solar thermal energy storage are introduced for both terrestrial and space applications. Enhancing the performance of these techniques using nanotechnology is introduced as well as using of advanced materials and structures. The chapter also introduces the main features of the other techniques for solar energy storage along with recent conducted research work. Economic and environment feasibility studies are also introduced.


Author(s):  
Carmen Mihaela Boteanu

This article describes how Romania has implemented a generous program for green energy development, which attracted so many investments that the target set for 2020 must have reached. This article presents a model for estimating the effect of governmental decisions on investments in renewable energy in Romania. This also reflects their influence on the state budget revenue generated from renewable energy producers and consumers, both households and industrial consumers. Results can be useful for the public sector involved in the production of green energy.


SIMULATION ◽  
2018 ◽  
Vol 95 (9) ◽  
pp. 861-872
Author(s):  
Yong Xiao ◽  
Jianchun Guo ◽  
Hehua Wang ◽  
Lize Lu ◽  
Mengting Chen

Geothermal energy is renewable, clean and green energy generated and stored in the Earth’s crust. The most important consideration for geothermal energy development in non-hydrothermal scenarios is the use of hydraulic fracturing technology to establish an effective network pathway to conduct fluid from injectors to producers. Hydraulic fracturing in geothermal wells is referred to as hydro-shearing and the aim is to improve the conductivity of natural fractures. In this paper, linear elastic constitutive relationships and shear strength of discontinuities in the pre-peak region are initially considered. Based on the dynamic frictional weakening, a proved conductive aperture and the post-peak elastoplastic constitutive models are proposed to analyze the deformation and conductivity of the natural fracture. Simulation research has shown that the joint compressive strength (JCS) mainly affects the shear displacement and hardly affects the dilation. The joint roughness coefficient (JRC) is more important for decreasing the shear strength and improves the dilation aperture. To no one’s surprise, reducing the effective normal stress is the best way for increasing the shear displacement, dilation and conductivity of the natural fracture. Almost 90% of the slip displacement and dilation occurs after fracture shear failure. This displacement not only increases the hydraulic conductivity of the fracture, but also reduces the required surface pumping pressure.


2018 ◽  
Vol 67 ◽  
pp. 02004
Author(s):  
Iqbal Yamin ◽  
Bambang Sugiarto ◽  
Setia Abikusna ◽  
Dedi Suntoro

Limited fossil energy resources need to encourage renewable energy development and energy conservation it is called green energy development. One of the alternative energy sources used are bioethanol, from low grade is converted into high grade through distillation process with distillator compact that will be used as a mixture of gasoline. Tests compact distillator consisting of evaporator Indonesia Kampus, separator, and condenser by utilizing exhaust gas to heat distillator already filled with low grade bioethanol, so the heat transfer occurs on the surface of the exhaust into the evaporator chamber. In the evaporator will transform ethanol into the vapor phase. Ethanol vapor flows into the separator, with a mechanism in it is expected that water vapor will evaporate participate separately with ethanol vapor. Ethanol vapors from this distillation will flow to the condenser and will be turned into liquid, the liquid is as high grade bioethanol would be the fuel mixing gasoline. In early studies, distillation rate was 98.5 ml/h with 67% ethanol content. Optimization compact distillator is done by adding the valve at the evaporator branch. When heat has reached 80°C exhaust gas flow to the evaporator chamber is closed. As a result, the heat from the evaporator can be detained and not rise significantly. Further optimization is to change the design of the separator through theoretical and empirical calculations with some assumptions based on the rule of thumb in the field of distillation, adding insulation to reduce heat leakage, as well as varying the feed volume and feed concentrate ethanol. In the end, based on the parameters of the distillation rate and ethanol concentrate, compact distillator with distances between tray 100 mm, volume 800 ml, engine speed 5.400 rpm can produce distillation rate of 274.3 ml/hr and ethanol concentrate of 88.97%.


2014 ◽  
Vol 962-965 ◽  
pp. 1924-1930
Author(s):  
Chao Yu ◽  
Jian Xu ◽  
Yang Li Zhu ◽  
Wei Qin ◽  
Zhen Zhong Li ◽  
...  

The socioeconomic status, resources and the actual energy resource demand-supply would be analyzed based on the data of five representative Green Energy County, such as Huanan County, Nong’an County, Gongzhuling County, Changtu County and Hangjinqi County. Then the common features for the counry energy consumption in the process of urbanization were summarized. The common challenges for county energy development were also pointed out in this paper. Several suggestions aimed at the Energy Project Planning for north regime in China were proposed at the end.


2021 ◽  
Vol 5 (3) ◽  
pp. 78-89
Author(s):  
Tetiana Borysova ◽  
Grygorii Monastyrskyi ◽  
Olena Borysiak ◽  
Yuliia Protsyshyn

Monitoring the growing role of implementing sustainable development goals, on the one hand, and the use of the Internet of things in various spheres of life, on the other, is changing the way people think about their mobility. The urgency of this scientific problem is the need to review municipal policies on approaches to the use of appropriate methods of public transport to improve municipal transport infrastructure policies in the light of advances in «green» energy development. This article justifies the need to focus on the study of changes in the Ukrainian taxi drivers’ behavior in the urban environment on the development of «green» energy, development of appropriate programs to coordinate the requests of users and providers of taxi services through sustainable development and digitization of taxi services. In addition, the impact of sustainable energy development on transport diversification and the use of environmental modes of transport, in particular, electric cars as taxis, are analyzed, depending on the number of charging stations and access to electricity. The methodological tools used were cluster analysis, expert surveys, face-to-face interviews, statistical and fuzzy multiple estimation methods. The subject of the study was selected taxi services and taxi users in the Ternopil region. According to the survey results, the priority factors for the environmental behavior of Ukrainian taxi drivers were the level of business automation and the size of the taxi fleet. In a survey conducted by experts to examine the environmental safety of vehicles and the level of automation of enterprises, most taxi services were found to be environmentally unsound, focusing on sustainable development and environmental issues. The most problematic are technical support, automated ordering system, and significant vehicle wear in small cities. To determine the approaches to the management of greening, the objects of study were organized into relatively homogeneous groups. To this end, a cluster analysis was conducted. The study subjects were grouped into relatively homogeneous groups. The authors justified the feasibility of differentiated strategies and reaffirmed the idea of developing different approaches to environmental development depending on the level of environmental friendliness of vehicles, business automation, and relative shares of the fleet. The study results could be useful for infrastructure scientists and practitioners, taxi managers and owners, andlocal government officials.


2021 ◽  
Vol 24 (1) ◽  
pp. 67-84
Author(s):  
Elnur Mekhdiev ◽  
Igbal Guliev ◽  
Kristina Benashvili

2018 ◽  
Vol 9 (3) ◽  
pp. 39-51
Author(s):  
Carmen Mihaela Boteanu

This article describes how Romania has implemented a generous program for green energy development, which attracted so many investments that the target set for 2020 must have reached. This article presents a model for estimating the effect of governmental decisions on investments in renewable energy in Romania. This also reflects their influence on the state budget revenue generated from renewable energy producers and consumers, both households and industrial consumers. Results can be useful for the public sector involved in the production of green energy.


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