scholarly journals Study of Solar Radiation and Wind Characteristics in Various Regions of Uzbekistan

2020 ◽  
Vol 220 ◽  
pp. 01061
Author(s):  
E.B. Saitov ◽  
Y.B. Sobirov ◽  
I.A. Yuldoshev ◽  
I.R. Jurayev ◽  
Sh. Kodirov
Keyword(s):  
Wind Speed ◽  
Solar Radiation ◽  
Wind Energy ◽  
Energy Supply ◽  
Primary Energy ◽  
Economic Indicators ◽  
Specific Data ◽  
Wind Characteristics ◽  
Primary Energy Supply ◽  
Technical And Economic Indicators

The article discusses methods for monitoring solar radiation and wind characteristics and practical principles of use. The efficiency of using solar and wind energy largely depends on how accurately the design took into account specific data on the arrival of solar radiation or wind speed at the site of the intended operation of installations. The instability of the primary energy supply makes it necessary to supply the installations with accumulators, the choice of capacity of which also affects the size of the energy receivers, and therefore the technical and economic indicators.

scholarly journals Renewable energy development in Uzbekistan: current status, problems and solutions

2020 ◽  
Vol 216 ◽  
pp. 01134
Author(s):  
E.B. Saitov
Keyword(s):  
Solar Radiation ◽  
Primary Energy ◽  
Energy Development ◽  
Current Status ◽  
Specific Data ◽  
Renewable Energy Development ◽  
Problems And Solutions ◽  
Wind Characteristics ◽  
Primary Energy Supply ◽  
Technical And Economic Indicators

The article discusses methods for monitoring solar radiation and wind characteristics and practical principles of use. The efficiency of using solar and wind energy largely depends on how accurately the design took into account specific data on the arrival of solar radiation or wind speed at the site of the intended operation of installations. The instability of the primary energy supply makes it necessary to supply the installations with accumulators, the choice of capacity of which also affects the size of the energy receivers, and therefore the technical and economic indicators.

Autonomous energy supply based on the wind-energy complex and hydrogen energy storage

2019 ◽  
pp. 12-26
Author(s):  
S. I. Nefedkin ◽  
A. O. Barsukov ◽  
M. I. Mozgova ◽  
M. S. Shichkov ◽  
M. A. Klimova
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Power Supply ◽  
Energy Supply ◽  
Heat Supply ◽  
Hot Water ◽  
Successful Implementation ◽  
High Wind ◽  
Wind Generators ◽  
Weak Wind

The paper proposes an alternative scheme of guaranteed electricity and heat supply of an energy-insulated facility with a high potential of wind energy without the use of imported or local fuel. The scheme represents a wind power complex containing the park of wind generators located at the points with high wind potential. The wind generators provide guaranteed power supply even in periods of weak wind. For heat supply of the consumer, all surplus of the electric power goes on thermoelectric heating of water in tanks of accumulators, and also on receiving hydrogen by a method of electrolysis of water. The current heat supply is carried out with the use of hot water storage tanks, and the heat supply during the heat shortage is carried out by burning the stored hydrogen in condensing hydrogen boilers. We have developed the algorithm of calculation and the program "Wind in energy" which allows calculating annual balance of energy and picking up necessary quantity of the equipment for implementation of the scheme proceeding from the annual schedule of thermal and electric loading, and also potential of wind energy in the chosen region. The calculation-substantiation of the scheme proposed in relation to the real energy-insulated object Ust-Kamchatsk (Kamchatka) is carried out. The equipment for the implementation of an alternative energy supply scheme without the use of imported fuel is selected and compared with the traditional energy supply scheme based on a diesel power plant and a boiler house operating on imported fuel. With the introduction of an alternative power supply scheme, the equipment of the traditional scheme that has exhausted its resource can be used for backup power supply. Using climate databases, a number of energy-insulated facilities in the North and East of Russia with high wind energy potential are considered and the conditions for the successful implementation of the energy supply scheme are analyzed. This requires not only a high average annual wind speed, but also a minimum number of days of weak wind. In addition, it is necessary that the profile of the wind speed distribution in the annual section coincides with the profile of the heat load consumption.

scholarly journals Delaying future sea-level rise by storing water in Antarctica

2016 ◽  
Vol 7 (1) ◽  
pp. 203-210 ◽  
Author(s):  
K. Frieler ◽  
M. Mengel ◽  
A. Levermann
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Energy Supply ◽  
Primary Energy ◽  
Ocean Water ◽  
Additional Mass ◽  
Dynamic Perspective ◽  
Primary Energy Supply ◽  
The Antarctic

Abstract. Even if greenhouse gas emissions were stopped today, sea level would continue to rise for centuries, with the long-term sea-level commitment of a 2 °C warmer world significantly exceeding 2 m. In view of the potential implications for coastal populations and ecosystems worldwide, we investigate, from an ice-dynamic perspective, the possibility of delaying sea-level rise by pumping ocean water onto the surface of the Antarctic ice sheet. We find that due to wave propagation ice is discharged much faster back into the ocean than would be expected from a pure advection with surface velocities. The delay time depends strongly on the distance from the coastline at which the additional mass is placed and less strongly on the rate of sea-level rise that is mitigated. A millennium-scale storage of at least 80 % of the additional ice requires placing it at a distance of at least 700 km from the coastline. The pumping energy required to elevate the potential energy of ocean water to mitigate the currently observed 3 mm yr−1 will exceed 7 % of the current global primary energy supply. At the same time, the approach offers a comprehensive protection for entire coastlines particularly including regions that cannot be protected by dikes.

scholarly journals A Comparison of α-Sutte Indicator and ARIMA Methods in Renewable Energy Forecasting in Indonesia

2018 ◽  
Vol 7 (1.6) ◽  
pp. 20 ◽  
Author(s):  
Ansari Saleh Ahmar
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Human Life ◽  
Primary Energy ◽  
Energy Forecasting ◽  
Indicator Method ◽  
New Energy ◽  
Primary Energy Supply

Humans in this world are very dependent on petroleum and energy. Petroleum and other energies are a major source in supporting human life. Regarding the reduced petroleum availability, a new energy is needed to replace the role of petroleum. Nowadays, there is much renewable energy that have been discovered and used. The purpose of this research is to predict the total primary energy supply in Indonesia by using α-Sutte Indicator and ARIMA method, and comparing those four methods which are effective in predicting data. Data from the research is renewable energy (total primary energy supply) which is obtained from OECD from 1971-2015. From the research, it is found that the α-Sutte Indicator method is more suitable to predict renewable energy (total primary energy supply) data in Indonesia compared to ARIMA (0,1,0). 

scholarly journals The Economics of Renewable Energy Sources into Electricity Generation in Tanzania

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Baraka Kichonge ◽  
Iddi S. N. Mkilaha ◽  
Geoffrey R. John ◽  
Sameer Hameer
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Electricity Generation ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Primary Energy ◽  
Energy Sources ◽  
Renewable Energy Technologies ◽  
Energy Technologies ◽  
Primary Energy Supply

The study analyzes the economics of renewable energy sources into electricity generation in Tanzania. Business as usual (BAU) scenario and renewable energy (RE) scenario which enforce a mandatory penetration of renewable energy sources shares into electricity generations were analyzed. The results show total investment cost for the BAU scenario is much lower as compared to RE scenario while operating and maintenance variable costs are higher in BAU scenario. Primary energy supply in BAU scenario is higher tied with less investment costs as compared to RE scenario. Furthermore, the share of renewable energy sources in BAU scenario is insignificant as compared to RE scenario due to mandatory penetration policy imposed. Analysis concludes that there are much higher investments costs in RE scenario accompanied with less operating and variable costs and lower primary energy supply. Sensitivity analysis carried out suggests that regardless of changes in investments cost of coal and CCGT power plants, the penetration of renewable energy technologies was still insignificant. Notwithstanding the weaknesses of renewable energy technologies in terms of the associated higher investments costs, an interesting result is that it is possible to meet future electricity demand based on domestic resources including renewables.

Beyond Malthus

2018 ◽  
Author(s):  
Kathleen Araújo
Keyword(s):  
Carbon Emissions ◽  
Energy Supply ◽  
Energy Use ◽  
Innovation Policy ◽  
Heat Budget ◽  
Ghg Emissions ◽  
Primary Energy ◽  
Fuel Combustion ◽  
Energy Utilization ◽  
Primary Energy Supply

This chapter explores the evolving understanding of carbon and sustainability since the 18th and 19th centuries. Relevant applications of influential ideas are then identified with respect to knowledge, innovation, policy, and meta-level change. More than 100 years ago, Swedish scientist Svante Arrhenius hypothesized about the onset of ice ages and interglacial periods by considering high latitude temperature shifts (NASA Earth Observatory, n.d.). Applying an energy budget model and ideas of other scientists, like John Tyndall, Arrhenius argued that changes in trace atmospheric constituents, particularly carbon dioxide, could significantly alter the Earth’s heat budget (Arrhenius, 1896, 1897; NASA Earth Observatory, n.d.). Today, science indicates that the global, average surface temperature has continued to rise alongside the increase in greenhouse gases. Among global GHGs, CO2 emissions have increased by more than a factor of 1,000 in absolute terms since 1800. During that time, global carbon emissions found in the primary energy supply increased by roughly 6% per year (Grubler, 2008a). This growth in carbon emissions from energy is significant because CO2 from fuel combustion dominates global GHG emissions (IEA, 2015a and 2015b; IPCC, 2013). As noted earlier, 68% of the global GHGs that are attributed to human activity are linked to the energy sector; namely, fuel combustion and fugitive emissions (IEA, 2015a). Within this share, 90% consisted of CO2 (IEA, 2015a). In contrast to the rise in absolute numbers, carbon emissions per unit of output in the global primary energy supply has decreased 36% overall or by slightly less than 0.2% per year over the past two centuries (Grubler, 2008a). This subtle decarbonizing pattern in the energy mix is explained by the faster growth rate of energy use in relation to the rate of carbon emissions from that use. The delinking of energy utilization and carbon emissions occurred in part with the introduction of less carbon-intensive fossil fuel sources, like natural gas, in which a higher hydrogen-to-carbon ratio is evident (Gibbons and Gwin, 2009; Grubler, 2004, citing Marchetti, 1985).

Visualizing the Energy Production, Imports and Exports for Countries

2021 ◽  
Author(s):  
Luisa Vargas Suarez ◽  
Jason Donev
Keyword(s):  
Natural Resources ◽  
Energy Supply ◽  
Energy Production ◽  
Fossil Fuels ◽  
Primary Energy ◽  
Interactive Simulation ◽  
The World ◽  
Energy Service ◽  
Primary Energy Supply ◽  
Conceptual Difficulties

<p>There are extensive conceptual difficulties in understanding a country’s energy story. Every country in the world uses some combination of energy production, imports, and exports energy to meet their society’s needs. Thermal inefficiencies converting primary energy into electricity further confuse the issues. A visualization using large, publicly available data can help illustrate these different energy perspectives. This data visualization helps clarify the following perspectives: Production, Imports, Exports, Total Primary Energy Supply (TPES), Total Final Consumption (TFC), and the conversion losses from turning TPES into TFC. TPES refers to the total amount of energy a country obtains directly from natural resources such as fossil fuels or wind. TFC refers to the addition of the all energy directly consumed by a user for an energy service such as electricity for lighting in a house. This paper discusses the interactive simulation that was built to allow users to explore the composition of a country’s energy production, imports and exports through the conversion into energy people consume. The simulation allows users to explore the energy stories for different countries, and how these change over the decades.</p>

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