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Nanogenerators-Based Energy Storage Devices
Published in Inamuddin, Mohd Imran Ahamed, Rajender Boddula, Tariq Altalhi, Nanogenerators, 2023
Vivian C. Akubude, Ayooluwa P. Adeagbo, Jelili A. Oyedokun, Victor C. Okafor, Kevin N. Nwaigwe
With the serious problems of environmental pollution and the possibility of an energy crisis, the desire for green and renewable energy sources for practical applications has gained increasing importance. Energy collection methods including solar energy, wave, wind or mechanical energy have attracted widespread attention for small self-powered electronic devices with low power consumption, such as sensors, wearable devices, electronic skin and implantable devices. One significant challenge for electronic devices is that the energy storage devices are unable to provide sufficient energy for continuous and long-time operation, leading to frequent recharging or inconvenient battery replacement. To satisfy the needs of next-generation electronic devices for sustainable working, conspicuous progress has been achieved regarding the development of nanogenerator-based self-charging energy storage devices. A nanogenerator is a type of technology that converts mechanical/thermal energy as produced by small-scale physical change into electricity. And, this chapter discusses the various types of nanogenerators, applications of nanotechnology in energy and integration of nanogenerator in energy storage devices.
Organic Phase Change Materials
Published in Asit Baran Samui, Smart Polymers, 2022
Swati Sundararajan, Asit Baran Samui
The global energy crisis has been aggravated due to the depletion of fossil fuels, rapidly expanding economies, and growing population. The research on renewable energy sources has increased tremendously and one of the ways to meet these demands is by using efficient and economical thermal energy storage (TES) systems. TES can be realized by sensible, latent, and thermochemical energy storage. Among these methods, latent energy storage using phase change materials (PCM) is a highly efficient storage system due to high TES density under nearly isothermal conditions.1,2 PCMs absorb heat from the surroundings during the melting process and heat is released back to the surroundings during the crystallization process (Figure 4.1).
A Way Forward
Published in Ashutosh Kumar Dubey, Amartya Mukhopadhyay, Bikramjit Basu, Interdisciplinary Engineering Sciences, 2020
Ashutosh Kumar Dubey, Amartya Mukhopadhyay, Bikramjit Basu
In the case of harvesting and storage of energy from “green” or renewable sources, the net contribution worldwide among just the renewable was just ∼25% in 20147,8 and nearly all the vehicles running on the streets have been burning fossil fuels, leading to severe environmental pollution. The pollution indexes recorded in major cities around the world are testimony for the same. Accordingly, technologists and scientists have an important task on their hands, which is to, not only address the potential energy crisis of the world, but also save the environment from excessive pollution created by the “non-green” and non-renewable energy sources (like fossil fuel and coal).
Techno-economic analysis and wind resource assessment for Odisha, India using reanalysis and 80 m mast measurements: a preliminary assessment for policy-makers
Published in International Journal of Ambient Energy, 2023
Renewable energy, especially wind and solar energy, is perceived to be the solution to the current energy crisis and the environmental impact of fossil fuel-based energy production. Amongst the renewable and non-conventional energy sources, wind energy is the most prevalent across the world (Arshad and O’Kelly 2019). It is also one of the widely accepted non-conventional energy sources in the Indian power sector. The share of wind power in India is about 10% which is 38 GW of 372 GW installed capacity (Central Electricity Authority 2020). Wind-solar hybrid systems can replace the old wind turbines and provide many economic advantages by re-powering rural communities. However, wind resource at a location is highly unpredictable and this results in uncertainty in policy formation and technical operation of wind-integrated power systems (Bastin et al. 2021). Nevertheless, the first estimate of wind energy potential is helpful in the formation of a wind energy policy. These estimates can also be helpful in assessing the sustainable development contribution of the wind plants (Hernández, González, and Fernández-Blanco 2019). While evaluating the impact of embedded wind power in electrical grids, estimates of wind power characteristics can provide novel insights into these contributions (Samal and Tripathy 2019).
Heat transfer and friction factor characteristic investigation of roughened solar air heater using arc-shaped wire rib roughness
Published in International Journal of Ambient Energy, 2022
As per the new technologies and advance developments, the demand of energy is increasing day by day. Many countries face energy crisis due to global economic recession, increasing fuel prices and oil shortage. Also the fossil fuels deplete. To reduce these problems, renewable energy is considered a promising alternative source of energy. Of all the sources of renewable energy, such as wind energy, solar energy, geothermal energy, bio-gas energy and tidal energy, etc., solar energy is one of the promising sources for heating and power generation. Solar energy is a clean source of energy and eco-friendly. Various applications of energy need can be fulfilled by the efficient use of solar energy. In solar thermal application systems, solar air heaters (SAHs), most commonly used ones, convert solar radiation into thermal energy and transfer to the flowing air. SAHs are mainly used for timber seasoning, crop drying, process industries and space heating, etc. (Duffie and Beckman 1991). The conventional SAH performance is very poor due to low heat absorbing capacity, low thermal conductivity of air flowing through the duct and low convective heat transfer coefficient between the absorber plate and air. These major issues can be improved by increasing the value of heat transfer coefficient or increasing the heat transfer area. There are various measures to increase the performance of SAHs such as absorbers with artificial roughness, packed/porous bed absorbers and use of extended surfaces (Duffie and Beckman 1991; Tiwari 2004).
A review on microalgae strains, cultivation, harvesting, biodiesel conversion and engine implementation
Published in Biofuels, 2021
Sandeep Kumar Duran, Pramod Kumar, Sarbjot S Sandhu
Recently, society is facing two issues: an energy crisis and environmental degradation. The energy crisis arose due to depletion of petroleum reserves and increasing energy demand. The second major issue includes ozone depletion, production of greenhouse gases (GHG), global warming, and health and safety concerns. Both issues are forcing us to focus on new substantial energy resources [1]. CO2 emission to the atmosphere can be reduced by trimming down the use of mineral oils as fuels and sequestering the CO2 emitted by mineral fuel combustion [2]. Therefore, we need to put more focus on alternative and renewable energy sources. Biomass can be derived from energy crops and even from biomass wastes [3]. The garbage from food industries and domestic houses can be used as feedstock for oil production by thermochemical liquefaction [4]. Photosynthesis organisms are the most suitable resource for biofuel production [5]. Reducing the CO2 concentration in the atmosphere is also a main concern with fuel production.