ESRIG-EES colloquium: Raúl Maicas Munoz and Peerawat Payakkamas, MSc EES students
|When:||Tu 19-02-2019 16:00 - 17:00|
|Where:||5159.0110, Energy Academy, Nijenborgh 6|
Title: 100% Renewable Energy Systems for Spain – Feasibility Assessment of Different Scenarios.
By: Raúl Maicas Munoz, MSc EES student.
Current policies have not been successful in achieving climate targets, therefore more ambitious objectives should be pursued. As many of GHG emissions are coming from energy use, 100% renewable energy systems are proposed as a solution. In this research, those systems are studied for Spain by discussing various energy scenarios for 2050, taking some from literature and creating more with different approaches and technologies. Furthermore, a critical assessment of the feasibility of those scenarios is realised by means of a multi-criteria analysis. With this methodology, each scenario is assessed and graded with a score on each of the feasibility criteria. By assessing common scores among all the criteria, characteristics of future energy systems can be understood. Finally, a combined score per scenario can be calculated, in order to state which are the scenarios that unite the best characteristics and would be more feasible to be deployed. Moreover, general conclusions about how certain technologies and approaches could help future energy systems to be more feasible will be extracted by the comparison between scenarios.
Title: Hydrogen as Sustainable Renewable-based Heating Solution: A Case of Dutch Household.
By: Peerawat Payakkamas, MSc EES student.
Natural gas accounts for a substantial portion of household heat consumption in The Netherlands. An option is to utilize hydrogen produced from the locally renewable energy resources as a technologically compatible alternative to the traditional natural gas. Numerous studies have shown that hydrogen could be a potential candidate for power-togas (PtG) conversion and long-term storage of intermittent renewable energy to provide households with sufficient clean energy. However, it is of further interest that the interplay with short-term energy storage, namely electrical and thermal storage, is still necessary to keep the system running optimally and on how ‘sustainable’ the resulting system could actually be.
This research aims at optimizing a renewable-based household heating system using hydrogen technologies combined with short-term energy storage to provide an average, existing Dutch household with well-balanced, sufficient and sustainable heat demand. The design of such system adopts the concepts of Material and Energy Flow Analysis (MEFA) to distinguish and connect the various streams of energy involved in this standalone energy system namely electricity, hydrogen and heat, in such ways that the sufficient heat demand could be satisfied. Modelling and analysis of system performance stem from the pre-existing, Excel-based computational models namely Clean Energy Design Tool and We-Energy Tool. Expansion to such pre-existing models is necessary to represent the proposed energy system and it largely involves the development of energy storage modules that are capable of idling, charging and discharging governed by the hourly net load signal. Scenario analysis makes comparison of the system performance based on the impact of incorporating and focusing on each of the different short-term energy storage modules.