E. Saidi, Ayoub El Baraka, Houssame Limami, A. Khaldoun
{"title":"Design of an Efficient Insulation System for a House in Zaouiat Sidi Abdeslam","authors":"E. Saidi, Ayoub El Baraka, Houssame Limami, A. Khaldoun","doi":"10.1109/IRSEC48032.2019.9078177","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078177","url":null,"abstract":"The purpose of this research is to design a thermal insulating system for a residential building in renovation. Several construction techniques are being implemented to ensure the feasibility of the project in a real-life scale, and to meet the constraints of the regulations regarding construction in the region of Ifrane, more specifically Zaouiat of Sidi Abdeslam. The aim of the study is to choose the best thermal insulation scenario for the house, in terms of thermal performance, and thermo-physical properties. The insulating materials proposed are foam of Polyurethane, Cellulose wadding, Rock wool, and Glass wool. Finally, the financial analysis will play an important role in the final decision. Using a dynamic thermal simulation software, “Binayate”, the analysis of the transfer of heat happening throughout the building envelope is presented; mainly heat gains, losses, energy need for cooling and heating periods, each of the insulated components of the house, walls, ceiling, floor, and windows, including the linear thermal bridges, and real data according to the weather in Ifrane are presented, reinforcing the personal arguments on the materials and method chosen in the project to achieve energy efficiency and sustainability. From the results, Glass Wool affirmed being the best scenario, having a 63% energy reduction impact and, a 4.3 years payback period. Furthermore, its insulation permanence's is accepted by the norms of the Moroccan thermal regulations.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"26 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87646768","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}
Belarhzal Samya, Aziz Bachir, El Mostapha Boudi, I. Amarir
{"title":"The Effect of Addendum Factor on Contact Ratio Factor and Contact Stress for Spur Gears","authors":"Belarhzal Samya, Aziz Bachir, El Mostapha Boudi, I. Amarir","doi":"10.1109/IRSEC48032.2019.9078205","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078205","url":null,"abstract":"This work is about analyzing the effect of changing the addendum factor on contact ratio factor and contact stress generated on zone action of spur gear teeth during meshing. In this paper, three values of addendum factor were considered: 1, 1.15 and 1.25, for each the contact stress was calculated according to ISO formula and compared with the results obtained from finite element method. To come up with the results, the 3D model was generated and assembled in SolidWorks software, using involute spur gear model, then treated for stress analysis on ANSYS Workbench (FEM).","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"36 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88937643","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}
One-Sun Lee, Mehamed Ali, A. Mabrouk, Ahmed A Abdala
{"title":"Molecular Dynamics Simulations of Self-Assembled Polyethylene-Hexagonal Boron Nitride Composite and Its Thermal Conductivity","authors":"One-Sun Lee, Mehamed Ali, A. Mabrouk, Ahmed A Abdala","doi":"10.1109/IRSEC48032.2019.9078254","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078254","url":null,"abstract":"The demand of the heat dissipating polymer-based composites is increasing because of the processibility, light weight, corrosion resistance, and low cost of polymers regardless of their low thermal conductivity. It is well known that 3-dimensional arrangement and the relative orientation of the filler particles with high thermal conductivity significantly influence the composite thermal conductivity. To study the relation between the composite internal structure and the thermal conductivity, we developed the atomistic model and measure the thermal conductivity of composites. The self-assembled structure of the composite composed of polyethylene (PE) matrix and hexagonal boron nitride (hBN) sheets is obtained at the atomistic level using annealing molecular dynamics simulations. We found that the hBN sheets prefer a stacked structure because of strong electrostatic interactions, and they form a segregated domain inside the polymer matrix. The effect of hBN concentration on the thermal conductivity is calculated and were found to be in good agreement with the experimental results.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74058557","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":"Behavior Studies of a New DC-AC Boost Inverter for Photovoltaic Applications: Theory and Simulation","authors":"A. Brahmi, A. Abounada, Weam E. L. Merrassi","doi":"10.1109/IRSEC48032.2019.9078180","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078180","url":null,"abstract":"The most important things in the design of photovoltaic inverter are reliability, efficiency, and cost. One of the most characteristics of the used conventional inverter is that it produces an AC output instantaneous voltage always lower then the DC input voltage. The use of inverters with a low-frequency or high-frequency transformer has the effect of either increasing the weight and the bulk or increasing the switching losses. To work around these problems, a new DC-AC boost inverter is chosen. it is a compact and modular structure without a transformer that performs the functions booster, filtering, and inverter. This work deals with the study of the performances, the design and the simulation of this topology. The Sinusoidal Pulse Width Modulation SPWM technique is used for control. ORCAD Capture 9.2 is used for simulation. The obtained results presented in this research corroborate the theoretical prediction.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"101 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74823969","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}
M. Aqil, M. Dahbi, I. Saadoune, A. E. Idrissi, A. Aqil, C. Jérôme
{"title":"Functionalized Graphite Nanoplatelet by Nitroxide Radical PILs as Anode Materials for Li-ion Battery","authors":"M. Aqil, M. Dahbi, I. Saadoune, A. E. Idrissi, A. Aqil, C. Jérôme","doi":"10.1109/IRSEC48032.2019.9078322","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078322","url":null,"abstract":"We report organic radical functionalized graphite nanoplatelet (GNP) via a simple click reaction of the polymer propagated radical, polyvinylimidazolium functionalized with redox-active free radical TEMPO pendants groups. The as-obtained monomer was successfully polymerized by free radical polymerization at low temperature (40 ° C) by using 2,2’ - azobis(4-methoxy-2.4-dimethyl valeronitrile) as initiator. Finally, the CNO bond of the alkoxyamine pendant groups was thermally cleaved releasing the redox-active TEMPO nitroxide radicals. This simple and efficient strategy to synthesize graphite-functionalized PILs will provide new opportunities to fabricate many other polymer composite electrodes for desired electrochemical performance.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"68 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75189489","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}
Asmaa Zaz, M. Bakkali, M. Ouassaid, Y. Ashie, M. Ghogho
{"title":"On the Impact of Rooftop Solar PV on Local Temperatures in Urban Areas","authors":"Asmaa Zaz, M. Bakkali, M. Ouassaid, Y. Ashie, M. Ghogho","doi":"10.1109/IRSEC48032.2019.9078199","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078199","url":null,"abstract":"Globally, the building sector accounts for around 36% of the final energy consumption and it produces 40% of CO2 emissions[1]. Similarly in Morocco, this sector is the largest energy consumer reaching a threshold of 33%, 26% for residential buildings and 7% for services (hotels, office buildings, schools, universities and hospitals). Thus, building consumption exceeds the industry sector (21%) and agriculture (8%) [2]. Such patterns are expected to increase quickly in the coming years. Integrating solar Photovoltaic (PV) panels in urban environments is an efficient solution to reduce electricity bills and CO2 emissions of buildings. This paper proposes a methodology to investigate the impact of large-scale deployment of solar PV on the urban micro-climate. This methodology consists of using the building footprints, building materials and meteorological conditions to calculate the urban surface temperatures before and after the integration of PV panels with the aim to assess any PV related Heat Islands (PVHI).","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"18 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72712134","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}
M. Mokhlis, M. Ferfra, A. Abbou, Rafika EL Idrissi, C. C. Ahmed
{"title":"SMC based MPPT to track the GMPP under Partial Shading","authors":"M. Mokhlis, M. Ferfra, A. Abbou, Rafika EL Idrissi, C. C. Ahmed","doi":"10.1109/IRSEC48032.2019.9078190","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078190","url":null,"abstract":"This paper presents a technique based on sliding mode controller to track the global maximum power point. This one is designed to control the power of a photovoltaic system composed of three photovoltaic modules, of a sepic converter and a resistive load. This technique is designed to distinguish the global maximum power in a curve composed of a multiple point of maximums. In fact, the multiple maximums appear when the insolation is non-uniform. The proposed technique consists of an algorithm able to locate the global maximum power and to generate the corresponding reference of voltage whenever the insolation changes. In addition, it consists of a sliding mode control able to follow the voltage reference by controlling the duty cycle of the sepic converter. The performances of the proposed approach have been tested and validated through computer simulation.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"25 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81943396","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":"Study of the GaInAsN/GaAs Structure for Improve the Efficiency of Solar Cell","authors":"A. Aissat, R. Bestam, S. Naser, J. Vilcot","doi":"10.1109/IRSEC48032.2019.9078222","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078222","url":null,"abstract":"The objective of this work is based on the modeling and simulation of the Ga1-xInxAs1-yNy/GaAs structure, for solar cell applications. Theoretical model was used to study the effects of the indium (In) incorporation and nitrogen (N) concentration in the GaInAsN material. In order to implement this idea, a simulation program was developed to determine the strain effect on the band energy by taking into consideration the influence of In < 25% and N < 4%. In this study we have used the Band Anti-Crossing (BAC) model. Indeed, the strain reduces the band gap energy, and the nitrogen incorporation splits the conduction band into two subbands E+ and E-. In the correct condition, we also treated the impact of indium and nitrogen concentrations on the absorption coefficient of the GaInAsN/GaAs structure. According to a particular sequence, the raise of these both materials concentrations In and N results in the increase of the absorption coefficient. This work allowed us to optimize the In and N concentrations to raise the efficiency η= 22%, with strain equal to 1.5% of the solar cell based on the GaInAsN/GaAs structure.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"37 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86922278","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":"High-Power Load Management for Residential House under Desert Climate Conditions - A Case Study in Qatar","authors":"Zhaohui Cen, Mohammed Al-Azba, S. Ahzi","doi":"10.1109/IRSEC48032.2019.9078287","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078287","url":null,"abstract":"Located as a Peninsula in the east of Arabia and bordering the Persian Gulf, Qatar has a unique desert weather condition with strong irradiance, high temperature, high humidity, and soiling issues. To maintain a comfort level of living under this arid climatic condition, Residential houses need to be equipped with necessary facilities and high-power home appliances such as Air-Conditioners, water heaters, refrigerators, pool pumps, laundries and so on. Also, electricity cost could be very different at peak time and non-peak time through the day. To achieve a better cost-efficient electricity consumption, optimization control of load consumption for local residential house is studied in this paper. Firstly, a dedicated house model with thermal dynamics under local conditions is developed in this paper. Based on this model, optimal cost-oriented load control and consumption management based on optimization tool is proposed. Also, by designing constraint criteria, the comfort level of housing indoor temperature is guaranteed and energy consumption upper boundary is restricted. Finally, the optimization control scheme is verified through a scenario under typical seasonal weather conditions. The results shows that the lowest cost of energy consumption can be achieved by the proposed optimization control of house load management.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89579485","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":"Effect of Solids Concentration in Cow Dung on Biogas Yield","authors":"E. Makhura, E. Muzenda, T. Lekgoba","doi":"10.1109/IRSEC48032.2019.9078218","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078218","url":null,"abstract":"This paper focuses on the utilization of animal waste in particular cow dung to produce biogas with the aim of finding the effect of substrate concentration on total biogas yield. The batch anaerobic digestion experiment was conducted using the Automatic Methane Potential Test System (AMPTS II). The experiment was conducted with 10%, 20%, 50% and 65% solids slurry and the results show that methane yield increases with an increase in solids concentration but only up to 20% where after the biogas production goes down. The digester that had cow dung at 20% solids produced a higher accumulated gas volume of 12790.5 Nml (equivalent to 14267.55 ml) while accumulated gas volumes of 3128.4 Nml (3441.24 ml), 4021.6 Nml (4433.76 ml) and 704.4 Nml (774.84 ml) were recorded for 10%, 50% and 65% cow dung respectively. The results from this study will prove to be very helpful in future because they can be used to improve the performance of anaerobic digestion.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"14 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89596889","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}