scholarly journals Modelling the impacts of challenging 2030 DPRK’s GHGs mitigation targets on DPRK’s energy system

2020 ◽  
Vol 145 ◽  
pp. 02079 ◽  
Author(s):  
Yongjae An ◽  
Haijun Cao ◽  
Cholu Kwon
Keyword(s):  
Ghg Emissions ◽  
Energy Systems ◽  
Energy System ◽  
Interesting Case ◽  
Emissions Reduction ◽  
Energy Technology ◽  
Systems Modelling ◽  
Business As Usual

The DPRK ratified the Paris Agreement on 1st August 2016 and fully committed to achieving goals for reduction of greenhouse gas (GHG) in its Intended Nationally Determined Contribution (INDC) which was submitted on 3rd October 2016. The DPRK’s INDC includes a mitigation and an adaptation component. In the mitigation component, as unconditional contribution, DPRK intends to achieve with domestic resources the reduction of GHG emissions by 8% by 2030 as compared to Business as Usual (BAU) scenario. Moreover, the conditional contributions are measures that could be implemented if additional international financial support, technology transfer and capacity building are received. The national contribution could be increased up to 40% with international support. This paper focuses on these mitigation targets for DPRK by an interesting case study of GHG emissions for a 12 year period from 1990 to 2002. We proposed the DPRK’s GHGs mitigation model by analyzing the Irish TIMES (The Integrated MARKAL–EFOM System) energy systems modelling tool, and proved the technical availability of CO2-8 scenario delivering an 8% emissions reduction target by 2030. We then compared the scenario results in terms of changes in energy technology, the role of energy efficiency and renewable energy.

scholarly journals Adaptation and mitigation synergies to improve sanitation: a case study in Morelos, Mexico

2018 ◽  
Vol 10 (3) ◽  
pp. 671-686 ◽  
Author(s):  
Ines Navarro González ◽  
Blanca Jiménez Cisneros ◽  
Nidya Aponte Hernández ◽  
Raquel Montes Rojas
Keyword(s):  
Wastewater Treatment Plants ◽  
Integrated Management ◽  
Ghg Emissions ◽  
Mitigation Measures ◽  
Septic Tank ◽  
Emissions Reduction ◽  
Baseline Scenario ◽  
Ipcc Guidelines ◽  
Business As Usual

Abstract The management of wastewater is the fifth largest single source of CH4 emissions and the sixth of N2O. Options to improve sanitation within the Morelos State in Mexico were compared applying a modification of the IPCC guidelines to estimate greenhouse gas (GHG) emissions. A 2030 business-as-usual scenario which considers current sanitation practices and 2010 baseline-scenario, showed that septic tanks, the main state option for sanitation, were the principal source of emissions, even higher than from non-controlled wastewater discharges. These scenarios also revealed that the two metropolitan areas were key in terms of mitigation as they contributed 88% of the total GHG emissions. For the 2030A scenario (sanitation + adaptation), it was seen that if the policy of septic tank usage continues, and the existing wastewater treatment plants (WWTPs) are rehabilitated, the GHG emissions would be reduced by 2% compared to the business-as-usual (BAU) scenario. In contrast, if a policy were adopted considering in addition mitigation measures, 26% GHG emissions reduction might be achieved. Additional co-benefits will be obtained in several sectors, including health (diarrheal and dengue diseases control), agriculture, and the environment, performing a more efficient and integrated management of water and achieving savings on the operating costs of WWTPs through co-generation.

scholarly journals Data-Driven Regionalization of Decarbonized Energy Systems for Reflecting Their Changing Topologies in Planning and Optimization

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4076
Author(s):  
Martin Kueppers ◽  
Christian Perau ◽  
Marco Franken ◽  
Hans Joerg Heger ◽  
Matthias Huber ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy System ◽  
Fine Tuning ◽  
Data Driven ◽  
Spatially Resolved ◽  
Grid Topology ◽  
Data Driven Approach

The decarbonization of energy systems has led to a fundamental change in their topology since generation is shifted to locations with favorable renewable conditions. In planning, this change is reflected by applying optimization models to regions within a country to optimize the distribution of generation units and to evaluate the resulting impact on the grid topology. This paper proposes a globally applicable framework to find a suitable regionalization for energy system models with a data-driven approach. Based on a global, spatially resolved database of demand, generation, and renewable profiles, hierarchical clustering with fine-tuning is performed. This regionalization approach is applied by modeling the resulting regions in an optimization model including a synthesized grid. In an exemplary case study, South Africa’s energy system is examined. The results show that the data-driven regionalization is beneficial compared to the common approach of using political regions. Furthermore, the results of a modeled 80% decarbonization until 2045 demonstrate that the integration of renewable energy sources fundamentally changes the role of regions within South Africa’s energy system. Thereby, the electricity exchange between regions is also impacted, leading to a different grid topology. Using clustered regions improves the understanding and analysis of regional transformations in the decarbonization process.

scholarly journals Dynamic Modelling of LNG Powered Combined Energy Systems in Port Areas

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3640
Author(s):  
Davide Borelli ◽  
Francesco Devia ◽  
Corrado Schenone ◽  
Federico Silenzi ◽  
Luca A. Tagliafico
Keyword(s):  
Energy Savings ◽  
Ghg Emissions ◽  
Dynamic Modelling ◽  
Energy Systems ◽  
Energy System ◽  
Primary Energy ◽  
Time Behavior ◽  
Vapor Compression Refrigeration Cycle ◽  
Integrated Energy System ◽  
Energy Share

Liquefied Natural Gas (LNG) is a crucial resource to reduce the environmental impact of fossil-fueled vehicles, especially with regards to maritime transport, where LNG is increasingly used for ship bunkering. The present paper gives insights on how the installation of LNG tanks inside harbors can be capitalized to increase the energy efficiency of port cities and reduce GHG emissions. To this purpose, a novel integrated energy system is introduced. The Boil Off Gas (BOG) from LNG tanks is exploited in a combined plant, where heat and power are produced by a regenerated gas turbine cycle; at the same time, cold exergy from LNG regasification contributes to an increase in the efficiency of a vapor compression refrigeration cycle. In the paper, the integrated energy system is simulated by means of dynamic modeling under daily variable working conditions. Results confirm that the model is stable and able to determine the time behavior of the integrated plant. Energy saving is evaluated, and daily trends of key thermophysical parameters are reported and discussed. The analysis of thermal recovering from the flue gases shows that it is possible to recover a large energy share from the turbine exhausts. Hence, the system can generate electricity for port cold ironing and, through a secondary brine loop, cold exergy for a refrigeration plant. Overall, the proposed solution allows primary energy savings up to 22% when compared with equivalent standard technologies with the same final user needs. The exploitation of an LNG regasification process through smart integration of energy systems and implementation of efficient energy grids can contribute to greener energy management in harbors.

scholarly journals Decomposition Analysis of the Evolution of the Local Energy System as a Tool to Assess the Effect of Local Actions: Methodology and Example of Malmö, Sweden

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 461
Author(s):  
Isabel Azevedo ◽  
Vítor Leal
Keyword(s):  
Local Level ◽  
Ghg Emissions ◽  
Decomposition Analysis ◽  
Specific Effect ◽  
Energy System ◽  
Local Energy ◽  
Total Change ◽  
The Impact ◽  
Change Mitigation

This paper proposes the use of decomposition analysis to assess the effect of local energy-related actions towards climate change mitigation, and thus improve policy evaluation and planning at the local level. The assessment of the impact of local actions has been a challenge, even from a strictly technical perspective. This happens because the total change observed is the result of multiple factors influencing local energy-related greenhouse gas (GHG) emissions, many of them not even influenced by local authorities. A methodology was developed, based on a recently developed decomposition model, that disaggregates the total observed changes in the local energy system into multiple causes/effects (including local socio-economic evolution, technology evolution, higher-level governance frame and local actions). The proposed methodology, including the quantification of the specific effect associated with local actions, is demonstrated with the case study of the municipality of Malmö (Sweden) in the timeframe between 1990 and 2015.

scholarly journals An Indicator-Based Approach for Analysing the Resilience of Transitions for Energy Regions. Part II: Empirical Application to the Case of Weiz-Gleisdorf, Austria

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2263 ◽  
Author(s):  
Romano Wyss ◽  
Susan Mühlemeier ◽  
Claudia Binder
Keyword(s):  
Path Length ◽  
Energy Systems ◽  
Energy System ◽  
Degree Centrality ◽  
Study Region ◽  
Regional Energy ◽  
Stabilization Phase ◽  
Full Picture ◽  
Regional Energy Systems

In this paper, we apply an indicator-based approach to measure the resilience of energy regions in transition to a case study region in Austria. The indicator-based approach allows to determine the resilience of the transition of regional energy systems towards higher shares of renewables and potentially overall higher sustainability. The indicators are based on two core aspects of resilience, diversity and connectivity. Diversity is thereby operationalized by variety, disparity and balance, whereas connectivity is operationalized by average path length, degree centrality and modularity. In order to get a full picture of the resilience of the energy system at stake throughout time, we apply the measures to four distinct moments, situated in the pre-development, take-off, acceleration and stabilization phase of the transition. By contextually and theoretically embedding the insights in the broader transitions context and empirically applying the indicators to a specific case, we derive insights on (1) how to interpret the results in a regional context and (2) how to further develop the indicator-based approach for future applications.

Contemporary Mythopoiesis: the role of Herodotus in Neil Gaiman’s American Gods

2020 ◽  
Vol 12 (3) ◽  
pp. 299-322
Author(s):  
Vanda Zajko
Keyword(s):  
Political Power ◽  
Interesting Case ◽  
Cultural Relativism ◽  
Main Body ◽  
Television Series ◽  
Ancient Greek ◽  
Cultural Form ◽  
Different Cultures

Abstract This article explores Neil Gaiman’s transmedial work American Gods as an example of contemporary mythmaking. Published in novel form in 2001 and launched as a television series in 2017, American Gods provides a commentary on the connectedness between different systems of stories and on myth itself as a vital present-day cultural form. It also provides us with a model for repurposing ancient material without reproducing the traditional hierarchies associated with cultures of storytelling. Gaiman’s text is an interesting case-study from the perspective of classical reception because he sidelines the ancient Greek gods in the main body of his story, while simultaneously positioning the ancient historian Herodotus as a significant intertext. The process of evaluating different cultures often veers between analyses which focus on similarities manifested across place and time and those which espouse a form of cultural relativism, a ‘live and let live’ philosophy. Gaiman seems to be offering something else here, namely a more vital and connected model for co-existence, one which is moving towards a pluri-versal perspective that acknowledges the links between political power, knowledge, and identity.

scholarly journals Techno-Economic Analysis of Grid-Connected PV and Fuel Cell Hybrid System Using Different PV Tracking Techniques

2020 ◽  
Vol 10 (23) ◽  
pp. 8515
Author(s):  
Saif Mubaarak ◽  
Delong Zhang ◽  
Yongcong Chen ◽  
Jinxin Liu ◽  
Longze Wang ◽  
...  
Keyword(s):  
Hybrid System ◽  
Energy Systems ◽  
Energy System ◽  
Vital Role ◽  
Pv System ◽  
Hybrid Energy ◽  
Cost Of Energy ◽  
System Components ◽  
Pv Generation

Solar energy has attracted the attention of researchers around the world due to its advantages. However, photovoltaic (PV) panels still have not attained the desired efficiency and economic mature. PV tracking techniques can play a vital role in improving the performance of the PV system. The aim of this paper is to evaluate and compare the technical and economic performance of grid-connected hybrid energy systems including PV and fuel cells (FC) by applying major types of PV tracking technique. The topology and design principles and technical description of hybrid system components are proposed in this paper. Moreover, this paper also introduces economic criteria, which are used to evaluate the economy of different PV tracking techniques and seek the optimal configuration of system components. In the case study, the results show that the vertical single axis tracker was ranked 1st in terms of highest PV generation, penetration of renewable energy to the grid, lowest CO2 emission, highest energy sold to the grid and lowest purchased, and lowest net present cost (NPC) and levelized cost of energy (LCOE). The study found that the optimal design of a grid-connected hybrid energy system (PV-FC) was by using a vertical single axis tracker which has the lowest NPC, LCOE.

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