Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10001971
H. Chenni, M. Djeghballou, S. Daba, N. Outili, A. H. Meniai
Waste cooking oil is produced in large quantities and disposed of in the environment, hence the interest of many researchers on its valorization using conversion of waste materials into different bio-products. Among the possibilities of bio-products, the present work investigates epoxide and polyol synthesis from waste oil. These renewable-products represent an alternative to petroleum-based ones with different application in polymeric sectors. The objective of this work is to value a waste by converting it to a bio-based product with an added value using an eco-friendly process that generates less waste or by-products. The produced epoxidized waste cooking oil had an oxirane value of 7.23% and a density of 0.992 g/cm3, it was transformed into bio-based polyol with an hydroxyl number of 45.02 mg KOH/g and a height density of 1.056 g/ cm3. The obtained yields of the two reactions was 92% and 100% for epoxidation and hydroxylation respectively.
{"title":"Valorization of waste cooking oil into bio-sourced products","authors":"H. Chenni, M. Djeghballou, S. Daba, N. Outili, A. H. Meniai","doi":"10.1109/IREC56325.2022.10001971","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10001971","url":null,"abstract":"Waste cooking oil is produced in large quantities and disposed of in the environment, hence the interest of many researchers on its valorization using conversion of waste materials into different bio-products. Among the possibilities of bio-products, the present work investigates epoxide and polyol synthesis from waste oil. These renewable-products represent an alternative to petroleum-based ones with different application in polymeric sectors. The objective of this work is to value a waste by converting it to a bio-based product with an added value using an eco-friendly process that generates less waste or by-products. The produced epoxidized waste cooking oil had an oxirane value of 7.23% and a density of 0.992 g/cm3, it was transformed into bio-based polyol with an hydroxyl number of 45.02 mg KOH/g and a height density of 1.056 g/ cm3. The obtained yields of the two reactions was 92% and 100% for epoxidation and hydroxylation respectively.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121034138","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002093
Hussin Zahloul, H. Hamzehbahmani, A. Khaliq, S. Veremieiev
Impacts of short circuit faults on dynamic performance of the conventional power system are well researched and fully understood. However, regarding to the renewable energy technologies there are lots of questions yet to be addressed. This paper studies the dynamic behaviour of a grid connected photovoltaic (PV) system under symmetrical short circuit fault using MATLAB Simulink environment. A control system was developed based on Perturb and Observation algorithm for maximum power point tracking. A control strategy was also developed for the Voltage Source Converter (VSC) to achieve a THD level as defined in IEEE standard 519. The system stability was evaluated using the respective control system. The dynamic performance of the system was studied subjected to symmetric fault. The key finding is that the stability of the system was affected at different points during the fault period. Nevertheless, the system regained its stability after the fault was cleared.
{"title":"An Approach to Dynamic Behaviour of a Grid Connected PV System During Symmetrical Short Circuit Fault","authors":"Hussin Zahloul, H. Hamzehbahmani, A. Khaliq, S. Veremieiev","doi":"10.1109/IREC56325.2022.10002093","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002093","url":null,"abstract":"Impacts of short circuit faults on dynamic performance of the conventional power system are well researched and fully understood. However, regarding to the renewable energy technologies there are lots of questions yet to be addressed. This paper studies the dynamic behaviour of a grid connected photovoltaic (PV) system under symmetrical short circuit fault using MATLAB Simulink environment. A control system was developed based on Perturb and Observation algorithm for maximum power point tracking. A control strategy was also developed for the Voltage Source Converter (VSC) to achieve a THD level as defined in IEEE standard 519. The system stability was evaluated using the respective control system. The dynamic performance of the system was studied subjected to symmetric fault. The key finding is that the stability of the system was affected at different points during the fault period. Nevertheless, the system regained its stability after the fault was cleared.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121884380","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002014
M. Keddar, Marcos Da Conceicao, M. Doumbia, Zhifeng Zhang
Water electrolyzers require a high DC power input that can sustain the economic hydrogen production rate. During the conversion from AC to DC, power quality may be affected due to the nonlinearity of each component. In this work, we predict the influence of electrolyzer degradation on power electronics output over a long period of operation. Counterintuitively, rather than decreasing power quality, results show that the power quality increased with the electrolyzer degradation in a 6-pulse thyristorbased solution. Simulation results were partially validated with experimental data from an industrial 20 MW scale PEM electrolyzer.
{"title":"Electrolyzer Degradation influence on power electronics performance for 6-pulse thyristor rectifier in a large-scale water electrolyzer","authors":"M. Keddar, Marcos Da Conceicao, M. Doumbia, Zhifeng Zhang","doi":"10.1109/IREC56325.2022.10002014","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002014","url":null,"abstract":"Water electrolyzers require a high DC power input that can sustain the economic hydrogen production rate. During the conversion from AC to DC, power quality may be affected due to the nonlinearity of each component. In this work, we predict the influence of electrolyzer degradation on power electronics output over a long period of operation. Counterintuitively, rather than decreasing power quality, results show that the power quality increased with the electrolyzer degradation in a 6-pulse thyristorbased solution. Simulation results were partially validated with experimental data from an industrial 20 MW scale PEM electrolyzer.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121838844","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002140
Z. Rajab, A. Asheibi, M. Almaktar, A. Khalil, A. Elbreki, F. Mohamed
The existence of abundant and free solar energy has contributed to the rapid development of PV systems, particularly rooftop installations and solar plants construction at transmission and distribution levels. Nevertheless, high penetration level of PV systems at distribution network level could potentially lead to abnormal operation of network. At steady state, the impacts are experienced on voltage (level, profile, stability and drop), line losses, equipment loading, etc. In this paper, a part of Benghazi distribution network is simulated by NEPLAN software. A real data for load and weather were used to simulate the real condition. The paper studies the impacts by comparing the behavior of the distribution grid without PV installations and with PV systems installed with different penetration levels (0%, 50%, 65% and 75%). The results generally showed that the installation of rooftop PV systems caused improvement in voltage profile, decreasing equipment’s (transformers and lines/feeders) loading and line losses. On the other hand, extensive deployment of PV capacity will cause an increase in equipment’s loading. The high penetration of PV systems will also affect the voltage profile, voltage level, and losses. From the results, the allowable penetration percentage (Hosting capacity) for the simulated network must not exceed 65%.
{"title":"Examination of Low Voltage Grid- Connected PV Generation Under Different Penetration Levels","authors":"Z. Rajab, A. Asheibi, M. Almaktar, A. Khalil, A. Elbreki, F. Mohamed","doi":"10.1109/IREC56325.2022.10002140","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002140","url":null,"abstract":"The existence of abundant and free solar energy has contributed to the rapid development of PV systems, particularly rooftop installations and solar plants construction at transmission and distribution levels. Nevertheless, high penetration level of PV systems at distribution network level could potentially lead to abnormal operation of network. At steady state, the impacts are experienced on voltage (level, profile, stability and drop), line losses, equipment loading, etc. In this paper, a part of Benghazi distribution network is simulated by NEPLAN software. A real data for load and weather were used to simulate the real condition. The paper studies the impacts by comparing the behavior of the distribution grid without PV installations and with PV systems installed with different penetration levels (0%, 50%, 65% and 75%). The results generally showed that the installation of rooftop PV systems caused improvement in voltage profile, decreasing equipment’s (transformers and lines/feeders) loading and line losses. On the other hand, extensive deployment of PV capacity will cause an increase in equipment’s loading. The high penetration of PV systems will also affect the voltage profile, voltage level, and losses. From the results, the allowable penetration percentage (Hosting capacity) for the simulated network must not exceed 65%.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115186258","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002070
B. Elhub, A. Elbreki, A. Ammar, M. Mohammad, Zakariya Rajab, Fasial Mohamed
In this paper, we investigated the performance of a hybrid ejector cooling system combined with a vapor system. The ejector system was operated at 70% and 80% of the compression cycle in the simulation. The hybrid ejector air conditioning system was modeled with EES software, and the refrigerant used was R134a. For maximum ejector performance, superheated conditions were assumed for the primary flow stream. The solar generator temperature ranged from 80 °C to 100 °C. The condenser temperature was from 30 °C to 40 °C, and the operating temperature of the evaporator was 8 °C to 12 °C. The obtained results indicated that under any operating condition, the optimum values of pressure drop in the suction chamber, ejector area ratio, ejector outlet pressure, and cooling coefficient of performance (COP) differed. The COP of the basic ejector cycle reached 0.616, given that the ejector cooling cycle worked in different conditions. By comparison, the value for the hybrid combined with the compression cycle system reached 0.91, which increased from 25% to 29% compared with the basic ejector cycle. The performance of the system with the ejector was better than that of the basic system even in the case of off design operation.
{"title":"Evaluating solar-driven ejector efficiency used in hybrid conventional air conditioning systems: a parametric study","authors":"B. Elhub, A. Elbreki, A. Ammar, M. Mohammad, Zakariya Rajab, Fasial Mohamed","doi":"10.1109/IREC56325.2022.10002070","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002070","url":null,"abstract":"In this paper, we investigated the performance of a hybrid ejector cooling system combined with a vapor system. The ejector system was operated at 70% and 80% of the compression cycle in the simulation. The hybrid ejector air conditioning system was modeled with EES software, and the refrigerant used was R134a. For maximum ejector performance, superheated conditions were assumed for the primary flow stream. The solar generator temperature ranged from 80 °C to 100 °C. The condenser temperature was from 30 °C to 40 °C, and the operating temperature of the evaporator was 8 °C to 12 °C. The obtained results indicated that under any operating condition, the optimum values of pressure drop in the suction chamber, ejector area ratio, ejector outlet pressure, and cooling coefficient of performance (COP) differed. The COP of the basic ejector cycle reached 0.616, given that the ejector cooling cycle worked in different conditions. By comparison, the value for the hybrid combined with the compression cycle system reached 0.91, which increased from 25% to 29% compared with the basic ejector cycle. The performance of the system with the ejector was better than that of the basic system even in the case of off design operation.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116925911","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002118
Amal Chkeir, Y. Bouzidi, Zoubayre El akili, Mahmoud Charafeddine, Zeinab Kashmar
Over the past 30 years, the demand for cooling energy has tripled in the Middle East (ME). This is provoked by the need to ensure thermal comfort in a very hot climate, as indoor thermal conditions are important for maintaining occupants' comfort. In a subtropical region, it becomes more critical in terms of energy consumption. This paper investigates the thermal comfort in buildings located in the city of Byblos, Lebanon. Thermal comfort was evaluated using subjective methods. The thermal perceptions of respondents were determined by questionnaires. Indoor environmental conditions such as relative humidity, air temperature, and air velocity were measured using a sensor during winter and summer seasons. While the results show a strong correlation between thermal comfort and architectural parameters, this study specifically focuses on building height and orientation. Findings highlight the need to propose an adapted suitably strategy to evaluate thermal comfort.
{"title":"The Effects of Orientation and Ceiling Height on the Thermal Comfort in the Traditional and Contemporary House in Byblos City Lebanon","authors":"Amal Chkeir, Y. Bouzidi, Zoubayre El akili, Mahmoud Charafeddine, Zeinab Kashmar","doi":"10.1109/IREC56325.2022.10002118","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002118","url":null,"abstract":"Over the past 30 years, the demand for cooling energy has tripled in the Middle East (ME). This is provoked by the need to ensure thermal comfort in a very hot climate, as indoor thermal conditions are important for maintaining occupants' comfort. In a subtropical region, it becomes more critical in terms of energy consumption. This paper investigates the thermal comfort in buildings located in the city of Byblos, Lebanon. Thermal comfort was evaluated using subjective methods. The thermal perceptions of respondents were determined by questionnaires. Indoor environmental conditions such as relative humidity, air temperature, and air velocity were measured using a sensor during winter and summer seasons. While the results show a strong correlation between thermal comfort and architectural parameters, this study specifically focuses on building height and orientation. Findings highlight the need to propose an adapted suitably strategy to evaluate thermal comfort.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123578721","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10001904
Aida Younis, C. Gennequin, E. A. Aad, Jane Estephane, S. Aouad
The catalytic dry reforming of plastic waste is performed in a two-stage fixed bed reactor set-up for synthesis gas production. The pyrolysis of plastics occurs in the first stage, while the dry reforming of the pyrolysates over a synthesized catalyst occurs in the second stage in the presence of carbon dioxide. The plastic used is polypropylene, which is simulating the most produced type of plastic. 25NiAl2O3 and 1Ru25NiAl2O3 are the studied catalysts, synthesized via wet impregnation. The effect of the catalyst’s calcination temperature on its performance is investigated. The results show that a lower calcination temperature revealed improved catalytic performance. The catalyst promoted with ruthenium did not show any deactivation during several consecutive runs. The calcination temperature and the metal promoter play a critical role in determining the stability and activity of the Ni-based catalysts during the dry reforming of polypropylene.
{"title":"Dry reforming of polypropylene over Ni and Ru-Ni catalysts supported on mesoporous alumina: Effect of calcination temperature","authors":"Aida Younis, C. Gennequin, E. A. Aad, Jane Estephane, S. Aouad","doi":"10.1109/IREC56325.2022.10001904","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10001904","url":null,"abstract":"The catalytic dry reforming of plastic waste is performed in a two-stage fixed bed reactor set-up for synthesis gas production. The pyrolysis of plastics occurs in the first stage, while the dry reforming of the pyrolysates over a synthesized catalyst occurs in the second stage in the presence of carbon dioxide. The plastic used is polypropylene, which is simulating the most produced type of plastic. 25NiAl2O3 and 1Ru25NiAl2O3 are the studied catalysts, synthesized via wet impregnation. The effect of the catalyst’s calcination temperature on its performance is investigated. The results show that a lower calcination temperature revealed improved catalytic performance. The catalyst promoted with ruthenium did not show any deactivation during several consecutive runs. The calcination temperature and the metal promoter play a critical role in determining the stability and activity of the Ni-based catalysts during the dry reforming of polypropylene.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122164195","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002092
Pierre Briot, Julien Dehame, Arnaud Desaphix, M. Nachidi, Fernando Tadeo
This paper presents a proposal for hydrogen production in order to provide the hydrogen and oxygen needed by a biogas process from sludge in a small island (5000 inhabitants). The study analyses also the introduction of storage and the possibility of off-grid operation.
{"title":"Design and Analysis of a Renewable Hydrogen system for biogas production","authors":"Pierre Briot, Julien Dehame, Arnaud Desaphix, M. Nachidi, Fernando Tadeo","doi":"10.1109/IREC56325.2022.10002092","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002092","url":null,"abstract":"This paper presents a proposal for hydrogen production in order to provide the hydrogen and oxygen needed by a biogas process from sludge in a small island (5000 inhabitants). The study analyses also the introduction of storage and the possibility of off-grid operation.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128896606","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002030
Salwa Almoshity, Khaled. A. Gouda, Salema Younus, F. Mohamed, A. Elbreki
Voltage regulator is very essential in controlling a constant output voltage due to changes in input voltage or load conditions, It is also important in controlling the voltage in photovoltaic systems and contributes to improving their performance and protection. The conventional technologies to control the Automatic Voltage Regulator (AVR) shows exhibit robustness and time-consuming when it is tuned. In this paper, the comparison study of a fuzzy logic and a PID controller for AVR is presented the purpose of this work is to provide a better understanding of the characteristics of AVR as a power system stabilizer (PSS) and to build an AVR controller utilizing PID and fuzzy logic. Based on a single machine, infinite bus system, the simulation was created fuzzy logic controller (FLC )is formed from three sets of rules which are based on fuzzification, rule evaluation and defuzzification. The performances for both PID and Fuzzy logic controller are compared in term of AVR terminal voltage output stability. It is suggested that FLC offer better performance compared to PID.
{"title":"Comparison study between PID and Fuzzy Logic Controller to improve performance of AVR system for synchronous generators","authors":"Salwa Almoshity, Khaled. A. Gouda, Salema Younus, F. Mohamed, A. Elbreki","doi":"10.1109/IREC56325.2022.10002030","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002030","url":null,"abstract":"Voltage regulator is very essential in controlling a constant output voltage due to changes in input voltage or load conditions, It is also important in controlling the voltage in photovoltaic systems and contributes to improving their performance and protection. The conventional technologies to control the Automatic Voltage Regulator (AVR) shows exhibit robustness and time-consuming when it is tuned. In this paper, the comparison study of a fuzzy logic and a PID controller for AVR is presented the purpose of this work is to provide a better understanding of the characteristics of AVR as a power system stabilizer (PSS) and to build an AVR controller utilizing PID and fuzzy logic. Based on a single machine, infinite bus system, the simulation was created fuzzy logic controller (FLC )is formed from three sets of rules which are based on fuzzification, rule evaluation and defuzzification. The performances for both PID and Fuzzy logic controller are compared in term of AVR terminal voltage output stability. It is suggested that FLC offer better performance compared to PID.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132318894","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}
Pub Date : 2022-12-13DOI: 10.1109/IREC56325.2022.10002008
Imad Ait Laasri, Niima Es-sakali, A. Outzourhit, Mohamed Oualid Mghazli
Phase change materials (PCM) have captured the interest of researchers in the building sector. As these PCMs could provide a passive temperature regulation, which will help in reducing the energy consumption of Heating, Ventilation and Air-Conditioning (HVAC) units. The implementation of PCMs in buildings requires an encapsulation to ensure no leakage occurs during phase change. The need to assess the energy savings of the PCMs at different building volumes is necessary, so that we can have an idea about the energy savings, cost and payback period of this passive thermal regulation solution. Hence, this paper will evaluate and compare 4 different building volumes in a semi-arid climate with the use of the EnergyPlus simulation engine for the commercial PCM RT 28. These four different building volumes are the following, a 10 m x 10 m, 9 m x 9 m, 8 m x 8 m and 7 m x 7 m square building with a respectively story height of 3 m, 2.7 m, 2.4 m and 2.1 m. The chosen story heights were carefully selected to maintain a constant length to height ratio throughout the different square building volumes. Thus, the main objective of this study is to assess the indoor air temperature fluctuation reduction, the PCM energy savings and the payback period for these different building volumes. The results reveal a great temperature regulation during the summer periods with a maximum temperature fluctuation reduction of 557.7 °C for the 7 m square building. In addition, the most energy efficient building was found to be the 10 m x 10 m x 3 m square building, which was able to save an annual energy of 1600.44 kWh with a low return payback period of 22.38 years.
{"title":"Numerical building energy simulation with phase change materials including hysteresis effect for different square building cases in a semi-arid climate","authors":"Imad Ait Laasri, Niima Es-sakali, A. Outzourhit, Mohamed Oualid Mghazli","doi":"10.1109/IREC56325.2022.10002008","DOIUrl":"https://doi.org/10.1109/IREC56325.2022.10002008","url":null,"abstract":"Phase change materials (PCM) have captured the interest of researchers in the building sector. As these PCMs could provide a passive temperature regulation, which will help in reducing the energy consumption of Heating, Ventilation and Air-Conditioning (HVAC) units. The implementation of PCMs in buildings requires an encapsulation to ensure no leakage occurs during phase change. The need to assess the energy savings of the PCMs at different building volumes is necessary, so that we can have an idea about the energy savings, cost and payback period of this passive thermal regulation solution. Hence, this paper will evaluate and compare 4 different building volumes in a semi-arid climate with the use of the EnergyPlus simulation engine for the commercial PCM RT 28. These four different building volumes are the following, a 10 m x 10 m, 9 m x 9 m, 8 m x 8 m and 7 m x 7 m square building with a respectively story height of 3 m, 2.7 m, 2.4 m and 2.1 m. The chosen story heights were carefully selected to maintain a constant length to height ratio throughout the different square building volumes. Thus, the main objective of this study is to assess the indoor air temperature fluctuation reduction, the PCM energy savings and the payback period for these different building volumes. The results reveal a great temperature regulation during the summer periods with a maximum temperature fluctuation reduction of 557.7 °C for the 7 m square building. In addition, the most energy efficient building was found to be the 10 m x 10 m x 3 m square building, which was able to save an annual energy of 1600.44 kWh with a low return payback period of 22.38 years.","PeriodicalId":115939,"journal":{"name":"2022 13th International Renewable Energy Congress (IREC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130494352","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}
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