Reda Drissi El-Bouzaidi, H. Rhinane, A. Hilali, El Arabi El Hassan, M. Maanan, O. Saddiqi
{"title":"Technical and Economical Photovoltaic Potential Assessment on Flat Roofs in urban area Case study: Casablanca, Morocco","authors":"Reda Drissi El-Bouzaidi, H. Rhinane, A. Hilali, El Arabi El Hassan, M. Maanan, O. Saddiqi","doi":"10.1109/REDEC.2018.8597851","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597851","url":null,"abstract":"Satisfying energy requirements in its most suitable form is the great challenge of the world in the 21st century. Moroccan authorities are fully aware about this challenge and works to promote the use of renewable energy sources, particularly solar energy. In this context, this study aims to assess and calculate the technical and economical photovoltaic potential in urban environment and locate suitable roofs for the installation of solar system. To achieve this goal, this study requires the use of solar radiation tool and a 3D model (DSM) generated from a vectorized Orthophoto derived from Photogrammetric restitution. The solar radiation is developed by Solar Analyst ArcGIS tool. The average technical and economical PV potential on each roof is calculated for the most common solar panel technologies (Monocrystalline Mono-Si and Polycrystalline Poly-Si). The applicability of this methodology demonstrated in a selected urban area in Casablanca, Morocco and can be generalized to any other region. The results can be an initial assessment of the solar potential in the city that can be used to support management decision regarding investment in solar system in urban environment.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126916704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Energy-Saving Solution for Future Cellular Systems","authors":"Rita ElKazzi, Ayman Khalil","doi":"10.1109/REDEC.2018.8597671","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597671","url":null,"abstract":"The interest of Telecom operators and Internet service providers (ISPs) is directed to reducing the energy consumption, especially at the base station which is the main energy consumer in the cellular network. The continuous increase of subscribers and the spread of services offered have motivated this interest. Following this increase, a lot of projects and techniques were established to demonstrate how to save energy in next generation wireless networks. The two main reasons for \"Green Communication\" are reducing CO2 emission and minimizing the operating expenditure (OPEX) for cellular networks. The challenge remains in the idea of accomplishing this decrease without having any negative effect on the quality of service (QoS) required for the users and the network’s performance. In this paper, the desire to move toward green communication is discussed by evaluating the amount of saved energy that can be reached by adopting a cooperative management between two operators providing network resources within the same region. We will use both networks in high traffic times, while one of them will be turned off during weak traffic periods. When the operator is switched off, its subscribers are granted roaming over the other network that is still on. The obtained simulation results have shown significant energy saving.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131513887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"In-flight estimation of the aerodynamic characteristics of a Magnus effect-based airborne wind energy system","authors":"E. Schmidt, Yashank Gupta, J. Dumon, A. Hably","doi":"10.1109/REDEC.2018.8598022","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8598022","url":null,"abstract":"Magnus effect-based Airborne wind energy (AWE) systems are a promising yet still unexplored concept for harnessing wind power at high-altitudes. While other aspects of the technology have been recently studied, the problem of obtaining accurate information regarding the aerodynamic behavior of the suspended cylinder as its spin ratio varies remains open. This paper presents an adaptation of an existing estimation strategy based on a constrained Extended Kalman filter (EKF) for the aerodynamic characterization of a small-scale Magnus effect-based AWE prototype. The evaluation is performed on data obtained during wind tunnel experiments, and results indicate that, after minor modifications, the chosen approach can indeed be applied to Magnus effect-based AWE systems. Moreover, provided that the cylinder’s angular velocity is available, it can be employed for approximately determining the relationship existing between the aerodynamic coefficients of lift and drag and the spin ratio of the airborne structure.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133328629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhengxuan Liu, Letizia Roccamena, M. Mankibi, Zhun Jerry Yu, Tingting Yang, Ying Sun, Pengcheng Sun, Shuisheng Li, Guoqiang Zhang
{"title":"Experimental analysis and model verification of a new earth-to-air heat exchanger system","authors":"Zhengxuan Liu, Letizia Roccamena, M. Mankibi, Zhun Jerry Yu, Tingting Yang, Ying Sun, Pengcheng Sun, Shuisheng Li, Guoqiang Zhang","doi":"10.1109/REDEC.2018.8597904","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597904","url":null,"abstract":"Utilizing renewable energy and associated energy-efficient technology has developed a strategy for energy-saving in the most energy consumer sectors, especially for buildings. Geothermal energy as an energy-saving and environment-friendly renewable technology has been widely adopted in the building sector. In this study, a new earth-to-air heat exchanger (EAHE) system with vertically buried tubes utilizing geothermal energy was proposed. Compared to the conventional EAHE systems, its advantages mainly include high geothermal energy utilization efficiency and ease of condensate water discharge. To evaluate the thermal performance of the proposed new EAHE system, an experimental set-up was established and a series of tests were conducted. Meanwhile, a numerical model for this proposed system was developed and then validated by the monitored experimental data. The monitored result show that the outlet air temperature ranges from 22.4°C to 24.2°C as the air flow velocity set at 1 m/s, enabling it to be used as an efficient energy-saving technology for summer cooling of buildings. The validated result show that the developed numerical model has a highly consistent result with the monitored experimental data, and their maximum error for outlet air temperatures is less than 0.74°C with a relative deviation of 3.11%. Based on the developed numerical model, the inlet air velocity is certified with an important influence on the thermal performance of this proposed system.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130436128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Mourtada, K. Hussein, Alaa Hamadi, Z. Nakad, Houssam Ajouz
{"title":"Parametric analysis for the Development of an Energy Building Code for Lebanon: HVAC Chapter","authors":"A. Mourtada, K. Hussein, Alaa Hamadi, Z. Nakad, Houssam Ajouz","doi":"10.1109/REDEC.2018.8597680","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597680","url":null,"abstract":"The scope of this Paper is a contribution to the development of the chapter Heating Ventilation and Air Conditioning (HVAC) of an Energy building code (EBC) for Lebanon. For this purpose, energy analysis were performed using DesignBuilder as a simulation tool, decomposing Lebanon into 5 different climatic zones with their corresponding hourly weather files, and focusing mainly into 3 building types which are Residential standard (building of 8 floors in Beirut and 3-4 floors in others regions with 2 apartments of 240 m2 per floor), Residential standing (building of 8 floors in Beirut and 3-4 floors in others regions with 1 apartments of 300 m2 per floor), and Non-Residential offices (building of 8 floors in Beirut and 3-4 floors in others regions with 580 m2 floor area). Parametric analysis was conducted and appropriate coefficients of performance and efficiency for HVAC equipment’s are proposed based on the International Energy Building Codes and standards.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Unified Platform for Simplifying the Design for Small-Scale Solar and Wind Energy Installations in Lebanon","authors":"F. Keyrouz, Danny Khoury, S. Georges","doi":"10.1109/REDEC.2018.8598116","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8598116","url":null,"abstract":"Lebanon is one of the countries in the Middle East that are endowed with climatic conditions which are predominantly sunny and characterized by hot summers and mild winters. The principal electric power producer in Lebanon (Electricité du Liban, EDL) is suffering from heavy financial losses spinning out of control from year to year. In addition, the different technical problems are affecting the electricity generation, its quality and the reliability of the power grid. This shortage in the generation of electricity was increased by the absence of any investments in new power plants since 1996 and the increased demand on power which was approximated by the World Bank as being a yearly increase of 8%. The customer in Lebanon has to subscribe with small power producers (private generators) which are currently illegal in order to complement the energy provided by EDL. To help solve this problem, the usage of renewable energy is suggested in this paper as an alternative to the non-environmental non-economic private generators at the short term and to complement the shortages of power provided by EDL. More importantly, the long-term motivation is the implementation of an environmentally-conscious energy approach that aspires to zero-carbon footprints in our country. The main purpose of this work is to develop a unified platform for the national geographical availability of renewable energy and to provide end users with all needed technical data and installation guidelines for the deployment of solar technologies in their homes, buildings, or residential areas. Practical sizing and most efficient installation of the renewable energy source or combination of sources that are most convenient to the end user are made available depending on the geographical location in Lebanon, the grid connectivity and the space availability. The end user will be fully aware of the different technical, economic, environmental and cultural advantages of renewable energy sources.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133800985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jean-Marc Vanbalberghe, Letizia Roccamena, R. Cantin
{"title":"Multi-criteria approach for the quality analysis of solar energy integration in mountain huts","authors":"Jean-Marc Vanbalberghe, Letizia Roccamena, R. Cantin","doi":"10.1109/REDEC.2018.8597883","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597883","url":null,"abstract":"Many countries have similar technical and architectural issues linked to solar energy integration in isolated mountain dwellings nowadays. In order to promote energy policies able to improve the solar energy potential use, it is necessary to set up multi-criteria approaches for producing improved diagnostic analysis. This study, conducted in eight mountain huts located in the Beaufortain region, in French Alps, shows the advantages and limitations of these approaches. Even if analysis criteria can be easily identified, the search for data allowing an accurate assessment is often difficult for isolated mountain dwellings. The results of this original study show the importance of multi-criteria analysis for technical and architectural issues linked to solar energy integration in isolated mountain dwellings by taking into account their natural environment, the elements of their bioclimatic architecture, their solar production conditions and their energy needs.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131115139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jean H. El Achkar, Ali Baydoun, D. Salameh, N. Louka, Zeina Hobaika, R. Maroun
{"title":"Can coffee grounds be considered as a potential for green energy production?","authors":"Jean H. El Achkar, Ali Baydoun, D. Salameh, N. Louka, Zeina Hobaika, R. Maroun","doi":"10.1109/REDEC.2018.8598105","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8598105","url":null,"abstract":"Coffee is one of the most popular beverages in the world. Over 50% of this mass is discarded after use, becoming a significant waste source known as spent coffee grounds (SCG). SCG usage as a raw material for biogas production emerges with great potential. In this study, we investigated the biochemical composition of SCG and its potential as a green energy source. We demonstrated that SCG can produce 0.1559 Nm3 CH4 / kg COD and that the extraction of polyphenols from the substrates can increase this production by almost 100%. In contrast, acid treatment using HCl showed no effect on gas production from this biomass.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115259989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
José Carlos Frutos Dordelly, M. El Mankibi, Mike Coillot
{"title":"Numerical and experimental investigations of a PCM integrated solar chimney","authors":"José Carlos Frutos Dordelly, M. El Mankibi, Mike Coillot","doi":"10.1109/REDEC.2018.8597941","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8597941","url":null,"abstract":"A coupled two-step Matlab Simulink mathematical model was developed for the analysis of solar-enhanced ventilation in a solar chimney. The model integrates the non-linearity behaviour of PCMs through the implementation of a DSC test. The model takes into consideration the heat transfer through a multi-layered wall and an aiflow model based on a pressure code. The results are compared to previous experimental results in order to calibrate and validate the numerical model. The proposed numerical model is able to predict with adequate accuracy the behaviour of a solar chimney under laboratory conditions with a correlation higher that 90 %; however, the model must still be adapted to the in situ results.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127225492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An economic study of control strategies for microgrids","authors":"K. Hajar, A. Hably, S. Bacha, A. Elrafhi","doi":"10.1109/REDEC.2018.8598121","DOIUrl":"https://doi.org/10.1109/REDEC.2018.8598121","url":null,"abstract":"A centralized model predictive control algorithm (MPCA) and an optimal centralized control algorithm (OCCA) are applied on main grid connected with a group of interconnected microgrids (MGs). Maximizing the profit for all of the units constituting the MGs is the primary objective in both algorithms, further the advantages of the principle grid. A forcasting information about production power, energy price and loads is needed for the application of MPCA in our study. five interconnected MGs related to the principle grid are tested in this paper using the algorithm implemented in MATLAB. The performance of the proposed algorithms has been shown especially for the benefits of MG owners at the same time as respecting the constraints associated to every considered one of them. Then the results of OCCA and MPCA are compared technically and economically for each MG.","PeriodicalId":426643,"journal":{"name":"2018 4th International Conference on Renewable Energies for Developing Countries (REDEC)","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120878340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}