scholarly journals Bang for the Buck

2012 ◽  
Vol 134 (05) ◽  
pp. 26-31 ◽  
Author(s):  
Frank Kreith

This article focuses on the need to develop alternatives to fossil fuels for present-day and future energy systems. The direction of energy research ought to be toward material science that can extend the life and lower the cost of renewable energy systems, rather than toward highly theoretical analyses that have over-the-horizon payoffs. Additionally, the planning for a smooth transition from fossil based to sustainable energy must include a side-by-side analysis of the economics as well as the energy return on energy investment (EROI) of each potential system. The EROI analysis would ensure the long-term viability of the technology, and the commercial analysis would show how much the system will cost and, thereby, provide an estimate of the money required for the installation in the transition period. The transition from the oil- and coal-based economy to a sustainably based future is not expected to be easy; however, taking advantage of the low-hanging fruit of conservation and energy efficiency will make that transition easier and much less painful.

2021 ◽  
Author(s):  
Taskin Jamal ◽  
Prof Christopher J. Fogwill ◽  
Ashraf Hossain Bhuiyan

Abstract Beneficiaries prefer renewable energy-based systems over grid-connected electricity. The cost of energy is viewed as the most influential factor while choosing renewable energy systems. Beneficiaries chose to stay linked with renewa­ble energy systems even when they received grid-connected electricity at a lower tariff.Net-metering and feed-in tariff mechanisms, as well as tax cuts and subsidies for renewable energy projects, could be the catalyst for fostering greater uptake of renewables in the electricity generation mix.


2022 ◽  
pp. 1-24
Author(s):  
Isa S. Qamber ◽  
Mohamed Y. Alhamad

The movements for any type of electric vehicle (EV) can be powered by wheels or driven by rotary motors. EVs derive their power from various sources, including fossil fuels. In the long term, reducing the cost of electrically powered vehicles (EDV) is seen as an essential ingredient to increase consumer acceptance. In addition, it aims to reduce the weight and volume of EDV. Moreover, the focus is on improving the performance, efficiency, and reliability of the EDV. The development of innovative modules is important when the acceleration of production and marketing needs to be improved. Consumers are looking for the production and transmission of electrical energy. This contributes to a greener environment. One of the most important parts of an EV is its battery. A proposed model presented in this chapter considers several parameters: solar radiation (PV panels), EV backup battery, and main charger. The model allows energy storage to be developed efficiently.


2019 ◽  
Vol 102 (2) ◽  
pp. 127-140 ◽  
Author(s):  
Yuliana de Jesus Acosta-Silva ◽  
Irineo Torres-Pacheco ◽  
Yasuhiro Matsumoto ◽  
Manuel Toledano-Ayala ◽  
Genaro Martín Soto-Zarazúa ◽  
...  

The growing demand for food and the unstable price of fossil fuels has led to the search for environmentally friendly sources of energy. Energy is one of the largest overhead costs in the production of greenhouse crops for favorable climate control. The use of wind–solar renewable energy system for the control of greenhouse environments reduces fuel consumption and so enhances the sustainability of greenhouse production. This review describes the impact of solar–wind renewable energy systems in agricultural greenhouses.


2021 ◽  
Vol 40 (6) ◽  
pp. 408-412
Author(s):  
Josef Paffenholz

To limit the warming of the planet to no more than a 2°C increase, models show that net-zero release of anthropomorphic CO2 must be achieved by the middle of the century. For the foreseeable future, the majority of the world's energy will still be provided by fossil fuels, so other methods, besides expanding the contribution of renewable energy, are needed in order to achieve this goal. According to the Intergovernmental Panel on Climate Change (IPCC), carbon capture and sequestration (CCS) is one such method, without which the cost to achieve the 2°C target would more than double. To achieve this climate goal, CCS efforts must increase by approximately 100-fold from current levels within the next 20 years. Geophysical simulations on suitable geologic models will provide an important tool to streamline and accelerate the vast expansion of geophysical site characterization and long-term monitoring tasks required for industrial-scale CCS to succeed.


Author(s):  
Tiwari S.L ◽  
◽  
Dinesh Tiwari ◽  

Remote areas, where renewable energy systems can make their greatest impact, for the most part will not have data on the available resources. This is especially true in developing countries. Often, the designer has to estimate the resources either based on data available at similar or nearby locations or rely on qualitative information, which may be of the form :highly windy, highly variable, calm, mostly cloudy, etc. But, such information is only a snapshot and does not represent long term averages that are needed for planning. In present paper Micro Grid is planned for Makhla village in Amravati district as a rural electrification.


2018 ◽  
Vol 17 ◽  
pp. 93-101 ◽  
Author(s):  
Majid Astaneh ◽  
Rodolfo Dufo-López ◽  
Ramin Roshandel ◽  
Farzin Golzar ◽  
José L. Bernal-Agustín

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6627
Author(s):  
Vijayaraja Loganathan ◽  
Ganesh Kumar Srinivasan ◽  
Marco Rivera

In this paper, a ‘k’-state inverter producing a higher number of voltage levels was designed, and we studied the inverter’s working. Further, a tri-state inverter was derived from the ‘k’-state inverter, which could build a maximum number of output voltage levels with the requirement of fewer components, thereby reducing the cost and size. A single Tri-state architecture generates three direct current (D.C.) voltage levels; therefore, cascading five tri-state architectures can generate 242 levels of DC voltages. Further, the inversion is done via the H bridge, which leads to 485 levels of the output voltage. Algorithms to design the amplitude of voltage sources and the generation of pulses are discussed in this paper. The proposed tri-state inverter takes a significant role in advancing renewable energy systems in utilizing inverter technology. A simulation study validated the operation of the proposed inverter. Moreover, an experimental setup was built for a single-phase 485-level inverter, and the structure’s performance was verified through the experimental results.


2019 ◽  
pp. 38-47 ◽  
Author(s):  
Marek Michalski

Research into environmental pollution and global warming has induced the energy industry and various levels of government to reduce their dependence on fossil fuels, especially coal and oil. One of the options being considered is increasing nuclear power generation, which has the advantage of high production capacity that can be fully utilized, low fuel consumption and low cost relative to the amount of electricity being generated. However, despite technological progress, the share of nuclear energy in the world’s energy mix is decreasing, especially in countries with highly developed economies. The reasons for this are high capital expenditures and their uncontrolled increase, fear of contamination of the natural environment in the event of a failure or terrorist attack as well as difficulties in long-term disposal of radioactive waste. This article analyzes the development of nuclear power as an alternative to fossil fuels in the pursuit of sustainable development, in particular with regard to investment outlays, the cost of generating electricity, environmental protection and security.


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