Alternative Energy Technologies and Third World Rural Energy Needs: A Case of Emerging Technological Dependency

1980 ◽  
Vol 11 (3) ◽  
pp. 335-365 ◽  
Author(s):  
Kurt Hoffman
Keyword(s):  
Alternative Energy ◽  
Third World ◽  
Rural Energy ◽  
Energy Technologies ◽  
Energy Needs

scholarly journals ASSESSING THE CARBON EMISSION REDUCTION BY GRID-TIED PHOTOVOLTAIC (PV) TECHNOLOGY FOR BUILDINGS IN SRI LANKA

2021 ◽  
Author(s):  
L.H. Ganegodage ◽  
◽  
K.G.A.S. Waidyasekara ◽  
H. Mallawaarachchi ◽  
Keyword(s):  
Renewable Energy ◽  
Sri Lanka ◽  
Alternative Energy ◽  
Carbon Emission ◽  
Energy Sources ◽  
Pv System ◽  
Carbon Reduction ◽  
Renewable Energy Technologies ◽  
Energy Technologies ◽  
Energy Needs

Energy related carbon emission of buildings is a major cause of global warming. In order to mitigate energy related carbon emission, buildings tend to adopt renewable energy technologies. Amongst renewable energy technologies, grid-tied PV technology has gained the interest of building energy consumers as an alternative energy source. Nevertheless, there is considerably low implementation of grid-tied PV technology in Sri Lanka, especially as a carbon reduction strategy. A key reason for lack of implementation of grid-tied PV system is that majority of buildings still depend on traditional energy sources for their total energy needs. Hence, there is a need of highlighting the importance of grid-tied PV system to penetrate the existing traditional energy market. The aim of this study is therefore to assess the possible energy related carbon reduction of grid-tied PV system for buildings in Sri Lanka. Accordingly, total of four (4) buildings were selected as case studies, including two buildings with grid-tied PV technology and two other buildings that are totally dependent on traditional energy sources. Subsequently, carbon footprint assessment was conducted to four (4) buildings specifying to energy related carbon emitting activities. And research findings revealed that selected two buildings with grid-Tied PV technology achieve an average reduction of carbon by 3379.77kg and 3013.06kg respectively per month compared to traditional-energy buildings. Consequently, this work has successfully identified that buildings with grid-tied PV technology achieve a reduction in energy related carbon emission compared to buildings with traditional energy sources.

scholarly journals Integrated Development of Rural Energy Systems through Pocket Area Approach for Energy Services: The REDP Experience, Nepal

2012 ◽  
Vol 9 ◽  
pp. 44-47
Author(s):  
Thakur Raj Devkota
Keyword(s):  
Geographical Area ◽  
Development Program ◽  
Energy Systems ◽  
Integrated Approach ◽  
Rural Energy ◽  
Energy Services ◽  
Energy Technologies ◽  
Energy Needs ◽  
Individual Household ◽  
The Individual

Micro-hydro technologies together with other renewable energy technologies are being disseminated in various parts of Nepal to provide basic energy services as per the demand of the individual household or a particular community. These technologies use an integrated approach that helps address rural energy needs by providing basic rural energy services. The planning and implementation of rural energy systems in an integrated manner through the ‘Pocket Area Approach’, which takes into account the entire geographical area for the intervention, has been experimented in some of the pockets area in the country and is found quite effective to cater to basic rural energy services to the entire population of the area. This paper illustrates the approach and results achieved by Rural Energy Development Program (REDP).DOI: http://dx.doi.org/10.3126/hn.v9i0.7072 Hydro Nepal Vol.9 July 2011 44-47

The prioritization of renewable energy technologies in Pakistan: An urgent need

2021 ◽  
pp. 81-103
Author(s):  
Leezna Saleem ◽  
Imran Ahmad Siddiqui ◽  
Intikhab Ulfat
Keyword(s):  
Renewable Resources ◽  
Fossil Fuels ◽  
Renewable Resource ◽  
Energy System ◽  
The Past ◽  
Energy Technologies ◽  
Energy Needs ◽  
Environmental Criteria ◽  
Populous Country ◽  
Selection Of

Pakistan is the world's sixth most populous country, currently facing the worst energy crisis. Although rich in renewable resources, Pakistan's energy system relies mainly on fossil fuels and imported energy for its energy needs. This study aims to use an analytical hierarchy pro-cess to prioritize six renewable technologies for Pakistan, with four criteria and thirteen subcriteria. The results indicate that solar power is particularly well suited for Pakistan, as it gained 42% priority weightage in the final aggregation. Wind energy is ranked second with a priority weight of 24%, followed by hydro 13%, biomass 9%, ocean 8% and geothermal en-ergy 3%. Solar and wind energies accounted for nearly 66% of the total weightage. This result highlighted the significance of economic criteria for the selection of renewable technologies in Pakistan, with around 43% priority weightage. Environmental criteria gained 19% whereas socio-political criteria registered 14% and technical criteria 23% priority weightage. During the potential assessment of the research, it was concluded that although renewable resource development has not been allocated sufficient attention in Pakistan in the past, if the correct decisions are taken regarding the exploitation of these resources, this can remedy the country's hazardous dependence on fossil fuel and imported energy.

scholarly journals Video Scanning Hartmann Optical Testing of State-of-the-Art Parabolic Trough Concentrators

Solar Energy ◽  
2006 ◽  
Author(s):  
Tim Wendelin ◽  
Ken May ◽  
Randy Gee
Keyword(s):  
Technology Development ◽  
Scale Up ◽  
Test System ◽  
Optical Testing ◽  
Parabolic Trough ◽  
Energy Technologies ◽  
Energy Needs ◽  
World Energy ◽  
Optical Test ◽  
And Performance

Significant progress has been made recently in solar parabolic trough technology development and deployment. Part of this success is due to the changing world energy scenario and the recognition that viable renewable energy technologies can play a role in supplying world energy needs. Part is also due to ongoing collaborative efforts by industry and the Department of Energy’s (DOE) Concentrating Solar Power Program (CSP) to enhance the state of the technology in terms of both cost and performance. Currently, there are two trough concentrator projects which the DOE CSP program is supporting. One company, Solargenix, is developing a design to be used in a 64MW plant outside of Boulder City, Nevada. This design is based on the original LUZ LS-2 trough concentrators employed at the Solar Electric Generating Systems (SEGS) plants in Southern California. Another company, Industrial Solar Technology (IST), is working on a scale-up of their design used historically for process heat applications. Very different from the LS-2 approach, this design is still in the research and development stages. One way in which the DOE CSP parabolic trough program assists industry is by providing optical testing and qualification of their concentrator designs. This paper describes the Video Scanning Hartmann Optical Test System (VSHOT) used to optically test both of these designs. The paper also presents the results of tests performed in the past year and what impact the testing has had on the developmental direction of each design.

scholarly journals A Review of Combined Regenerative Suspension and Electromagnetic Braking system

2020 ◽  
Vol 06 (09) ◽  
pp. 19-23
Author(s):  
Prof. Gaffar G. Momin, Rushikesh Barve, Manasi Shah, Nikita Sutar and Dominic Jibin James
Keyword(s):  
Alternative Energy ◽  
Electrical Energy ◽  
Suspension System ◽  
Braking System ◽  
Energy Technologies ◽  
Shock Absorbers ◽  
System A ◽  
Linear Vibrations ◽  
Vehicle Suspension System ◽  
Significant Attention

Considering the rate of depletion of the available oil-based fuels, Renewable Energy Technologies are receiving significant attention in these years. It is, therefore, necessary to find alternatives to energy sources. This project focusses on one such alternative. A study is done on a vehicle suspension system and braking system. Suspension in vehicles produces linear vibrations due to the roughness on the roads. These vibrations are absorbed the shock absorbers and dissipated in the form of heat. In the case of a conventional braking system,a huge amount of heat is lost due to friction. This study proposes a design of a system where the heat lost in the suspension system is extracted, converted into a usable form of electrical energy and stored in batteries. This stored energy is further used in the operation of electromagnet powered brakes. Using the Regenerative Suspension System reduces the waste of energy in the shock absorbers and gives an alternative energy source and use of the Electromagnetic Braking System ensures frictionless braking. Thus, the overall consumption of energy is reduced by a notable amount.

Nanotechnology and Polymer Solar Cells

2014 ◽  
pp. 384-405
Author(s):  
Gavin Buxton
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Nanoscale Structures ◽  
Energy Technologies ◽  
Self Assembling ◽  
Polymer Photovoltaics ◽  
Energy Needs ◽  
Novel Applications

In response to environmental concerns there is a drive towards developing renewable, and cleaner, energy technologies. Solar cells, which harvest energy directly from sunlight, may satisfy future energy requirements, but photovoltaic devices are currently too expensive to compete with existing fossil fuel based technologies. Polymer solar cells, on the other hand, are cheaper to produce than conventional inorganic solar cells and can be processed at relatively low temperatures. Furthermore, polymer solar cells can be fabricated on surfaces of arbitrary shape and flexibility, paving the way to a range of novel applications. Therefore, polymer solar cells are likely to play an important role in addressing, at least in some small part, man’s future energy needs. Here, the physics of polymer photovoltaics are reviewed, with particular emphasis on the computational tools which can be used to investigate these systems. In particular, the authors discuss the application of nanotechnology in self-assembling complex nanoscale structures which can be tailored to optimize photovoltaic performance. The role of computer simulations, in correlating these intricate structures with their performance, can not only reveal interesting new insights into current devices, but also elucidate potentially new systems with more optimized nanostructures.

Nanotechnology and Polymer Solar Cells

2013 ◽  
pp. 231-253
Author(s):  
Gavin Buxton
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Nanoscale Structures ◽  
Energy Technologies ◽  
Self Assembling ◽  
Polymer Photovoltaics ◽  
Energy Needs ◽  
Novel Applications

In response to environmental concerns there is a drive towards developing renewable, and cleaner, energy technologies. Solar cells, which harvest energy directly from sunlight, may satisfy future energy requirements, but photovoltaic devices are currently too expensive to compete with existing fossil fuel based technologies. Polymer solar cells, on the other hand, are cheaper to produce than conventional inorganic solar cells and can be processed at relatively low temperatures. Furthermore, polymer solar cells can be fabricated on surfaces of arbitrary shape and flexibility, paving the way to a range of novel applications. Therefore, polymer solar cells are likely to play an important role in addressing, at least in some small part, man’s future energy needs. Here, the physics of polymer photovoltaics are reviewed, with particular emphasis on the computational tools which can be used to investigate these systems. In particular, the authors discuss the application of nanotechnology in self-assembling complex nanoscale structures which can be tailored to optimize photovoltaic performance. The role of computer simulations, in correlating these intricate structures with their performance, can not only reveal interesting new insights into current devices, but also elucidate potentially new systems with more optimized nanostructures.

Considerations Regarding the Use of Fuel Cells in Combined Heat and Power for Stationary Applications

2021 ◽  
pp. 239-275
Author(s):  
Andrei Mircea Bolboaca
Keyword(s):  
Energy Demand ◽  
Alternative Energy ◽  
Clean Energy ◽  
Combined Heat And Power ◽  
Pollutant Emissions ◽  
Energy Technologies ◽  
Energy Demands ◽  
New Energy ◽  
Energy Conversion Systems ◽  
Polluting Emissions

Covering the energy demands under environmental protection and satisfying economic and social restrictions, together with decreasing polluting emissions, are impetuous necessities, considering that over half of the pollutant emissions released in the environment are the effect of the processes of electricity and heat production from the classic thermoelectric powerplant. Increasing energy efficiency and intensifying the use of alternative resources are key objectives of global policy. In this context, a range of new energy technologies has been developed, based on alternative energy conversion systems, which have recently been used more and more often for the simultaneous production of electricity and heat. An intensification of the use of combined energy production correlated with the tendency towards the use of clean energy resources can be helpful in achieving the global objectives of increasing fuel diversity and ensuring energy demand. The chapter aims at describing the fuel cell technology, in particular those of the SOFC type, used in the CHP for stationary applications.

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