scholarly journals Hydrogen Energy Demand Growth Prediction and Assessment (2021–2050) Using a System Thinking and System Dynamics Approach

2022 ◽  
Vol 12 (2) ◽  
pp. 781
Author(s):  
Talal Yusaf ◽  
Mohamd Laimon ◽  
Waleed Alrefae ◽  
Kumaran Kadirgama ◽  
Hayder Al Dhahad ◽  
...  

Adoption of hydrogen energy as an alternative to fossil fuels could be a major step towards decarbonising and fulfilling the needs of the energy sector. Hydrogen can be an ideal alternative for many fields compared with other alternatives. However, there are many potential environmental challenges that are not limited to production and distribution systems, but they also focus on how hydrogen is used through fuel cells and combustion pathways. The use of hydrogen has received little attention in research and policy, which may explain the widely claimed belief that nothing but water is released as a by-product when hydrogen energy is used. We adopt systems thinking and system dynamics approaches to construct a conceptual model for hydrogen energy, with a special focus on the pathways of hydrogen use, to assess the potential unintended consequences, and possible interventions; to highlight the possible growth of hydrogen energy by 2050. The results indicate that the combustion pathway may increase the risk of the adoption of hydrogen as a combustion fuel, as it produces NOx, which is a key air pollutant that causes environmental deterioration, which may limit the application of a combustion pathway if no intervention is made. The results indicate that the potential range of global hydrogen demand is rising, ranging from 73 to 158 Mt in 2030, 73 to 300 Mt in 2040, and 73 to 568 Mt in 2050, depending on the scenario presented.

Systems ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 56
Author(s):  
Urmila Basu Mallick ◽  
Marja H. Bakermans ◽  
Khalid Saeed

Using Indian free-ranging dogs (FRD) as a case study, we propose a novel intervention of social integration alongside previously proposed methods for dealing with FRD populations. Our study subsumes population dynamics, funding avenues, and innovative strategies to maintain FRD welfare and provide societal benefits. We develop a comprehensive system dynamics model, featuring identifiable parameters customizable for any management context and imperative for successfully planning a widescale FRD population intervention. We examine policy resistance and simulate conventional interventions alongside the proposed social integration effort to compare monetary and social rewards, as well as costs and unintended consequences. For challenging socioeconomic ecological contexts, policy resistance is best overcome by shifting priority strategically between social integration and conventional techniques. The results suggest that social integration can financially support a long-term FRD intervention, while transforming a “pest” population into a resource for animal-assisted health interventions, law enforcement, and conservation efforts.


2021 ◽  
Vol 11 (2) ◽  
pp. 500
Author(s):  
Fabrizio Pilo ◽  
Giuditta Pisano ◽  
Simona Ruggeri ◽  
Matteo Troncia

The energy transition for decarbonization requires consumers’ and producers’ active participation to give the power system the necessary flexibility to manage intermittency and non-programmability of renewable energy sources. The accurate knowledge of the energy demand of every single customer is crucial for accurately assessing their potential as flexibility providers. This topic gained terrific input from the widespread deployment of smart meters and the continuous development of data analytics and artificial intelligence. The paper proposes a new technique based on advanced data analytics to analyze the data registered by smart meters to associate to each customer a typical load profile (LP). Different LPs are assigned to low voltage (LV) customers belonging to nominal homogeneous category for overcoming the inaccuracy due to non-existent coincident peaks, arising by the common use of a unique LP per category. The proposed methodology, starting from two large databases, constituted by tens of thousands of customers of different categories, clusters their consumption profiles to define new representative LPs, without a priori preferring a specific clustering technique but using that one that provides better results. The paper also proposes a method for associating the proper LP to new or not monitored customers, considering only few features easily available for the distribution systems operator (DSO).


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bonoukpoè Mawuko Sokame ◽  
Henri E. Z. Tonnang ◽  
Sevgan Subramanian ◽  
Anani Y. Bruce ◽  
Thomas Dubois ◽  
...  

AbstractStemborers (Busseola fusca, Sesamia calamistis and Chilo partellus), the fall armyworm (Spodoptera frugiperda) and associated parasitoids constitute an interacting system in maize fields in Kenya. This work aims at developing and evaluating models that represent the evolution of those interactions by applying system thinking and system dynamics approaches with its archetypes [causal loop diagram (CLD), reinforcing (R) and balancing (B)] to analyse the population of these multi-species systems. The software Vensim PLE 8.0.9 was used to implement the models and carry out the simulations of single- and multi-species systems. The results showed that when a single pest species with its associated parasitoids interact with the host plant, the species was able to establish and sustain by cyclical relationship between populations of the pest and the associated parasitoids. However, in multi- pest species systems, dominance of S. frugiperda and C. partellus over B. fusca and S. calamistis was observed, but without extinction. However, there was a likelihood for B. fusca being displaced by C. partellus. Overall, the models predict the co-existence of fall armyworm with stemborer species as an additional pest of maize in Africa that need to be considered henceforth in designing IPM strategies in maize.


2020 ◽  
Vol 18 (6) ◽  
pp. 806-823
Author(s):  
Anna Ciepielewska-Kowalik

Merton’s law on unintended consequences (1936) warns against the undesirable and unanticipated outcomes of every action and policy. More recent research (Zhao, 2017) in the field of education, in relation to Merton, claims that these consequences are usually treated as inconvenient side effect of a policy, but are, in fact, planned by policy-makers or other stakeholders to benefit them. It is therefore more appropriate to call them ‘(un)intended consequences’, which are not written into the policy but are a result of how the policy translates into practice. This paper, in relation to the above approaches, aims at revealing (un)intended consequences and hidden agendas of the educational reform conducted by the Polish government in 2016, with a special focus on their impact on ECEC. (Un)intended consequences are investigated here in four dimensions, including ECEC: organisational changes, curriculum, management and educators.  The paper is based on the review of literature and on the author’s qualitative and quantitative research among parents, teachers and representatives of local authorities, carried out in the 2018/2019 school year.


2014 ◽  
Vol 12 (3) ◽  
pp. 231-246 ◽  
Author(s):  
Robert Thurlby ◽  
Kim Warren

Purpose – This paper aims to describe a high-level model portraying the relationships between operational, investment, commercial and regulatory pressures, and reports the early findings from testing alternative strategies, both over the long- and short-term. Concern about the vulnerability of utility networks (electricity, gas and water) and other infrastructures, including transport and telecommunications, to environmental, terrorist and other threats has increased in recent years. This has been motivated both by a perceived increase in such threats and by recognition that the commercial pressures and regulation of companies operating these infrastructures could unintentionally have increased that risk. Powerful simulation tools already help utility operators develop asset investment polices to improve both the performance and resilience of their networks, while others have helped increase their capability to respond efficiently when disruptive events occur. However, these tools need to be further developed to increase understanding of how the interdependencies between operational, investment, commercial and regulatory pressures influence and eventually define the strategic policies available to these organisations and what the long-run consequences will be for the resilience of these systems and hence for service continuity. Design/methodology/approach – Use of system dynamics methods and tools to develop a new approach to strategy and policy development for risk management for organisations operating the critical national infrastructure. Findings – System dynamics is a valid approach to address the problem of understanding risk and developing risk mitigation and management strategies for organisations operating the critical national infrastructure. To develop policies that will effectively manage and mitigate risk in the critical national infrastructure, it is essential to identify and model the interactions and interdependencies between the organisational, investment, commercial and regulatory factors. Research limitations/implications – The research has developed a proof-of-concept model and set of simulation tools which produce good results using test data from one type of organisation operating in the critical national infrastructure. The model has not been tested using data from other types of organisations. Similarly, the software written in the model has not been tested in operational conditions and further testing will be required. Practical implications – The model at the moment can only be applied to single organisation. The interactions between organisations are not in scope. Originality/value – Although some work in the field using simulation tools and methods has been done in the USA, the use of system dynamics and its application to the specific situation on the UK and Europe is new. The model uses earlier work which applied system dynamics to the subject of asset investment planning, but is a major step forward from this work. Risk and resilience is one of the major challenges facing operators of the critical national structure. This work will be of potential value to all these organisations.


2013 ◽  
Vol 732-733 ◽  
pp. 1406-1409
Author(s):  
Shu Xia Yang ◽  
Qi Han

With the rapidly growing economy, the energy demand increases greatly. Due to energy distribution imbalance in the space, part of the areas lack of energy resources, relying on energy call to ensure energy security. In this paper, first of all, we put forward the steps of comparatively studying different modes of energy transmission with system dynamics model and carry out a causal analysis. Then we analyze the causality among model variables. Finally, we draft a causality diagram of model elements. Based on this, we establish quantitative relations among variables and draft a system flow diagram.


Author(s):  
DIETMAR PFAHL ◽  
KARL LEBSANFT

System Dynamics (SD) is a method that allows for integrated modelling of technical as well as managerial aspects responsible for the dynamic complexity of systems. Therefore, simulation of SD models can also be a tool for problem analysis within software organisations. In this paper, experience with SD modelling of software processes and projects within Siemens is reported. Special focus is put on problems encountered during knowledge acquisition for SD model building, like inadequate guidance while conducting SD modelling projects, and insufficient methodical support for re-using available or generating missing knowledge. Both problems were addressed in a research project, jointly conducted by Fraunhofer IESE and Siemens Corporate Technology. One of the results of this project is a prescriptive process model for building SD models. This process model, which is briefly outlined in the paper, provides guidance for a systematic development of SD models in software organisations.


2012 ◽  
Vol 8 ◽  
pp. 331-347
Author(s):  
Paweł Żukowski

In the work chapter, after discussing issues related to systems thinking, mental models, system dynamics and procedure of modeling, presents the socio-mathematical description of the dynamics of economic organization management system based on system dynamics methodology developed by Jay W. Forrester, as a creative concept used for researching system thinking. The purpose of this description is to illustrate the methodology and characteristics the construction this type of that models. This description is a simply way represent any economic organization (production), which show the organizational units (departments and production department), the flows of orders, the streams of information about materials and prefabricates, final products and their storage and sales. Built model of system dynamics allow management to analyze the causes of fluctuations In the processes of economic organization changes observed at the urgen changes to take new orders for final products. The simulation made on the basic experimentally constructed model revealed certain properties characteristic of the dynamic behavior of economic organization (formation of the characteristic and interesting letter size) at its manufacturing operations in case of adoption of new orders for final products.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Shuo Ma

<p>is currently,continued growth in global energy demand and dwindling fossil fuel resource reserves,and<br />environmental security issues are gradually highlighted,makes it possible to create aClean and sustainable energy<br />systems have become an urgent need for national security strategies for the future ofnations.awide range of hydrogen<br />sources,use clean and can thenhealth,is ideal for traditional fossil fuels alternative energy.This article mainly introduces<br />the development of hydrogen energy and hydrogen production and hydrogen storage technology,and analyzing<br />hydrogen energyTechnologies in the development of automobiles,-fuel cell car.To resolve the energy problems that are<br />currently facing</p>


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