The Use of Renewable Energy in the Form of Methane Via Electrolytic Hydrogen Generation / Zastosowanie Odnawialnej Energii W Formie Metanu Na Drodze Elektrolitycznej Produkcji Wodoru

2013 ◽  
Vol 58 (1) ◽  
pp. 231-239 ◽  
Author(s):  
K. Hashimoto ◽  
N. Kumagai ◽  
K. Izumiya ◽  
H. Takano ◽  
P.R. Zabinski ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Hydrogen Generation ◽  
Industrial Applications ◽  
World Energy ◽  
Electrolytic Hydrogen ◽  
World Energy Consumption ◽  
Global Carbon ◽  
Seawater Electrolysis

Extrapolation of world energy consumption from 1990 to 2010 indicates the complete exhaustion of world reserves of oil, natural gas, uranium and coal by 2040, 2043, 2046 and 2053, respectively. For the survival of all people in the whole world, intermittent and fluctuating electricity generated from renewable energy should be supplied in the form of usable fuel to all people in the whole world. We have been working on research and development of global carbon dioxide recycling for the use of renewable energy in the form of methane via electrolytic hydrogen generation using carbon dioxide as the feedstock. We created energy-saving cathodes for hydrogen production, anodes for oxygen evolution without chlorine formation in seawater electrolysis, and catalysts for methanation of carbon dioxide and built pilot plants of industrial scale. Recent advances in materials are described. Industrial applications are in progress.

Key Materials and Systems for the Use of Renewable Energy in the Form of Methane

2009 ◽  
Author(s):  
Koji Hashimoto ◽  
Zenta Kato ◽  
Naokazu Kumagai ◽  
Koichi Izumiya
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Primary Energy ◽  
Methane Formation ◽  
Production Of Hydrogen ◽  
And Performance ◽  
Carbon Dioxide Methanation ◽  
Coal Reserves ◽  
Global Carbon ◽  
Seawater Electrolysis

Extrapolation of primary energy consumption of the world between 1990 and 2005 to the future revealed the complete exhaustion of oil, uranium, natural gas and coal reserves on the Earth in 2034, 2040, 2040 and 2054, respectively. We have been proposing global carbon dioxide recycling to use renewable energy for all people in the whole world. The electricity converted from renewable energy will be used for production of hydrogen by seawater electrolysis. Hydrogen, for which no infrastructures of transportation and combustion exist, will be converted to methane by the reaction with carbon dioxide captured by energy consumers. Among systems in global carbon dioxide recycling, seawater electrolysis and carbon dioxide methanation have not been performed industrially. We created energy-saving cathodes for hydrogen production and anodes for oxygen evolution without chlorine formation in seawater electrolysis, and ideal catalysts for methane formation by the reaction of carbon dioxide with hydrogen. This paper reviews the characteristics and performance of these materials in the systems.

scholarly journals EVALUATION OF RENEWABLE ENERGY ALTERNATIVES USING MACBETH AND FUZZY AHP MULTICRITERIA METHODS: THE CASE OF TURKEY

2013 ◽  
Vol 19 (1) ◽  
pp. 38-62 ◽  
Author(s):  
Tijen Ertay ◽  
Cengiz Kahraman ◽  
İhsan Kaya
Keyword(s):  
Economic Growth ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Fuzzy Ahp ◽  
Social Progress ◽  
The Sustainable Development ◽  
World Energy ◽  
Multicriteria Methods ◽  
Sustainable Economic Growth ◽  
World Energy Consumption

Energy is a critical foundation for economic growth and social progress. It is estimated that 70% of the world energy consumption could be provided from renewable resources by the year 2050. Renewable energy is the inevitable choice for sustainable economic growth, for the harmonious coexistence of human and environment as well as for the sustainable development. The aim of this paper is to evaluate the renewable energy alternatives as a key way for resolving the Turkey's energy-related challenges because of the fact that Turkey's energy consumption has risen dramatically over the past three decades as a consequence of economic and social development. In order to realize this aim, we comparatively use MACBETH and AHP-based multicriteria methods for the evaluation of renewable energy alternatives under fuzziness. We use 4 main attributes and 15 sub-attributes in the evaluation. The potential renewable energy alternatives in Turkey are determined as Solar, Wind, Hydropower, and Geothermal.

The use of renewable energy in the form of methane via electrolytic hydrogen generation using carbon dioxide as the feedstock

2016 ◽  
Vol 388 ◽  
pp. 608-615 ◽  
Author(s):  
Koji Hashimoto ◽  
Naokazu Kumagai ◽  
Koichi Izumiya ◽  
Hiroyuki Takano ◽  
Hiroyuki Shinomiya ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Hydrogen Generation ◽  
Electrolytic Hydrogen

scholarly journals REPUBLIC OF MOLDOVA POWER ENERGY IN THE PANDEMIC

2021 ◽  
Vol XXVIII (4) ◽  
pp. 27-33
Author(s):  
Corina Guțu-Chetrușca ◽  
◽  
Aurel Guțu ◽  
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Residential Buildings ◽  
Electricity Consumption ◽  
Household Consumption ◽  
Republic Of Moldova ◽  
World Energy ◽  
The Republic ◽  
World Energy Consumption

The anti-COVID restrictions have resulted in a reduction of the total world energy consumption. At the same time, the transfer of the activities to home increased the household consumption of electricity by up to 30%. In the Republic of Moldova, the total electricity consumption in 2020 decreased compared to 2019 by 0.22 %, while household consumption increased by 3.5%. In the first quarter of 2021, household consumption increased by 7.8%, raising the share of household consumption to 45.5 %. Working from home has proven to be convenient for both employees and employers, so the trend is expected to remain after the pandemic crisis. In this context, a series of energy efficiency and renewable energy solutions in residential buildings are expected to be implemented.

Application of Statistical Taguchi Method to Optimize Main Elements in the Residential Buildings in Malaysia Based Energy Consumption

2014 ◽  
Vol 606 ◽  
pp. 265-269 ◽  
Author(s):  
Seyed Mojib Zahraee ◽  
Milad Hatami ◽  
Ali Asghar Bavafa ◽  
Kambiz Ghafourian ◽  
Jafri Mohd Rohani
Keyword(s):  
Energy Consumption ◽  
Taguchi Method ◽  
Residential Buildings ◽  
Controversial Issues ◽  
Upward Trend ◽  
Warming Climate ◽  
World Energy ◽  
Optimum Energy ◽  
Temperature And Pressure ◽  
World Energy Consumption

Today energy consumption is one of the controversial issues in the world. The rapid growing world energy consumption has already increased concern about the supply problems, heavy environmental effects such as global warming, climate change and etc. One of the most users of energy is residential buildings that consume the biggest share of energy. Growth in population, rising demand for buildings together causes to increase the upward trend in energy consumption. Therefore, energy efficiency in buildings plays a significant role to decrease the environmental effect. The goal of this paper is optimizing the main elements which are window, ceiling and wall by considering the effect of uncontrollable factors such as humidity , temperature and pressure in residential buildings using statistical method namely Taguchi method (JMP 11 software). A two-storey house in Malaysia was selected to simulate by means of BIM application. Based on the result, the optimum energy saving will be achieved when the type of material which are used for wall ,ceiling and window to be Brick Plaster , Acoustic Tile Suspended and Single Glazed Alum Frame respectively.

scholarly journals Two Is Not Enough: Privacy Assessment of Aggregation Schemes in Smart Metering

2017 ◽  
Vol 2017 (4) ◽  
pp. 198-214 ◽  
Author(s):  
Niklas Buescher ◽  
Spyros Boukoros ◽  
Stefan Bauregger ◽  
Stefan Katzenbeisser
Keyword(s):  
Energy Consumption ◽  
Personal Data ◽  
Smart Meters ◽  
Trade Off ◽  
World Energy ◽  
Protection Mechanisms ◽  
Significant Probability ◽  
Aggregation Scheme ◽  
Energy Provider ◽  
World Energy Consumption

Abstract The widespread deployment of smart meters that frequently report energy consumption information, is a known threat to consumers’ privacy. Many promising privacy protection mechanisms based on secure aggregation schemes have been proposed. Even though these schemes are cryptographically secure, the energy provider has access to the plaintext aggregated power consumption. A privacy trade-off exists between the size of the aggregation scheme and the personal data that might be leaked, where smaller aggregation sizes leak more personal data. Recently, a UK industrial body has studied this privacy trade-off and identified that two smart meters forming an aggregate, are sufficient to achieve privacy. In this work, we challenge this study and investigate which aggregation sizes are sufficient to achieve privacy in the smart grid. Therefore, we propose a flexible, yet formal privacy metric using a cryptographic game based definition. Studying publicly-available, real world energy consumption datasets with various temporal resolutions, ranging from minutes to hourly intervals, we show that a typical household can be identified with very high probability. For example, we observe a 50% advantage over random guessing in identifying households for an aggregation size of 20 households with a 15-minutes reporting interval. Furthermore, our results indicate that single appliances can be identified with significant probability in aggregation sizes up to 10 households.

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