Pub Date : 2021-02-14DOI: 10.24003/EMITTER.V9I1.558
Sami-ul-Haq, Muhammad Naeem Ahmed Khan, A. M. Mirza, I. Saleem, S. Rehman, R. A. Wagan
The field of Global Software Development has been an active area of research for the last two decades due to its enormous benefits such as lower labor cost, faster development and easy access to the skilled labor pool. Apart from these benefits, it faces some challenges like communication, coordination, trust and configuration management etc. These challenges arise primarily due to physical, cultural and time zone differences. The empirical studies highlight that the existing Global Software Development solutions do not fully meet the user needs as there are still several gaps in these solutions. Therefore, to fulfill these gaps, there is a need to develop novel frameworks that address outstanding issues. In this paper, we have attempted to address the aforesaid GSD challenges. The practitioners can benefit from our proposed framework during the execution of GSD projects. The proposed framework mainly focuses on the root causes of the two principal challenges namely the communication and cultural differences. We believe that if the team members of a software project can communicate effectively and show considerations for others by imparting due reverence to the cultural norms, then the other residual issues can easily be reduced and minimized.
{"title":"Addressing Communication, Coordnation and Cultural Issues in Global Software Development Projects","authors":"Sami-ul-Haq, Muhammad Naeem Ahmed Khan, A. M. Mirza, I. Saleem, S. Rehman, R. A. Wagan","doi":"10.24003/EMITTER.V9I1.558","DOIUrl":"https://doi.org/10.24003/EMITTER.V9I1.558","url":null,"abstract":"The field of Global Software Development has been an active area of research for the last two decades due to its enormous benefits such as lower labor cost, faster development and easy access to the skilled labor pool. Apart from these benefits, it faces some challenges like communication, coordination, trust and configuration management etc. These challenges arise primarily due to physical, cultural and time zone differences. The empirical studies highlight that the existing Global Software Development solutions do not fully meet the user needs as there are still several gaps in these solutions. Therefore, to fulfill these gaps, there is a need to develop novel frameworks that address outstanding issues. In this paper, we have attempted to address the aforesaid GSD challenges. The practitioners can benefit from our proposed framework during the execution of GSD projects. The proposed framework mainly focuses on the root causes of the two principal challenges namely the communication and cultural differences. We believe that if the team members of a software project can communicate effectively and show considerations for others by imparting due reverence to the cultural norms, then the other residual issues can easily be reduced and minimized.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81274939","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 : 2021-02-02DOI: 10.14419/IJET.V10I1.31310
Mariam W. Yousef, K. Batiha
These days, heart disease comes to be one of the major health problems which have affected the lives of people in the whole world. Moreover, death due to heart disease is increasing day by day. So the heart disease prediction systems play an important role in the prevention of heart problems. Where these prediction systems assist doctors in making the right decision to diagnose heart disease easily. The existing prediction systems suffering from the high dimensionality problem of selected features that increase the prediction time and decrease the performance accuracy of the prediction due to many redundant or irrelevant features. Therefore, this paper aims to provide a solution of the dimensionality problem by proposing a new mixed model for heart disease prediction based on (Naive Bayes method, and machine learning classifiers). In this study, we proposed a new heart disease prediction model (NB-SKDR) based on the Naive Bayes algorithm (NB) and several machine learning techniques including Support Vector Machine, K-Nearest Neighbors, Decision Tree, and Random Forest. This prediction model consists of three main phases which include: preprocessing, feature selection, and classification. The main objective of this proposed model is to improve the performance of the prediction system and finding the best subset of features. This proposed approach uses the Naive Bayes technique based on the Bayes theorem to select the best subset of features for the next classification phase, also to handle the high dimensionality problem by avoiding unnecessary features and select only the important ones in an attempt to improve the efficiency and accuracy of classifiers. This method is able to reduce the number of features from 13 to 6 which are (age, gender, blood pressure, fasting blood sugar, cholesterol, exercise induce engine) by determining the dependency between a set of attributes. The dependent attributes are the attributes in which an attribute depends on the other attribute in deciding the value of the class attribute. The dependency between attributes is measured by the conditional probability, which can be easily computed by Bayes theorem. Moreover, in the classification phase, the proposed system uses different classification algorithms such as (DT Decision Tree, RF Random Forest, SVM Support Vector machine, KNN Nearest Neighbors) as a classifiers for predicting whether a patient has heart disease or not. The model is trained and evaluated using the Cleveland Heart Disease database, which contains 13 features and 303 samples. Different algorithms use different rules for producing different representations of knowledge. So, the selection of algorithms to build our model is based on their performance. In this work, we applied and compared several classification algorithms which are (DT, SVM, RF, and KNN) to identify the best-suited algorithm to achieve high accuracy in the prediction of heart disease. After combining the Naive Bayes method with each o
{"title":"Heart Disease Prediction Model Using Naïve Bayes Algorithm and Machine Learning Techniques","authors":"Mariam W. Yousef, K. Batiha","doi":"10.14419/IJET.V10I1.31310","DOIUrl":"https://doi.org/10.14419/IJET.V10I1.31310","url":null,"abstract":"These days, heart disease comes to be one of the major health problems which have affected the lives of people in the whole world. Moreover, death due to heart disease is increasing day by day. So the heart disease prediction systems play an important role in the prevention of heart problems. Where these prediction systems assist doctors in making the right decision to diagnose heart disease easily. The existing prediction systems suffering from the high dimensionality problem of selected features that increase the prediction time and decrease the performance accuracy of the prediction due to many redundant or irrelevant features. Therefore, this paper aims to provide a solution of the dimensionality problem by proposing a new mixed model for heart disease prediction based on (Naive Bayes method, and machine learning classifiers). In this study, we proposed a new heart disease prediction model (NB-SKDR) based on the Naive Bayes algorithm (NB) and several machine learning techniques including Support Vector Machine, K-Nearest Neighbors, Decision Tree, and Random Forest. This prediction model consists of three main phases which include: preprocessing, feature selection, and classification. The main objective of this proposed model is to improve the performance of the prediction system and finding the best subset of features. This proposed approach uses the Naive Bayes technique based on the Bayes theorem to select the best subset of features for the next classification phase, also to handle the high dimensionality problem by avoiding unnecessary features and select only the important ones in an attempt to improve the efficiency and accuracy of classifiers. This method is able to reduce the number of features from 13 to 6 which are (age, gender, blood pressure, fasting blood sugar, cholesterol, exercise induce engine) by determining the dependency between a set of attributes. The dependent attributes are the attributes in which an attribute depends on the other attribute in deciding the value of the class attribute. The dependency between attributes is measured by the conditional probability, which can be easily computed by Bayes theorem. Moreover, in the classification phase, the proposed system uses different classification algorithms such as (DT Decision Tree, RF Random Forest, SVM Support Vector machine, KNN Nearest Neighbors) as a classifiers for predicting whether a patient has heart disease or not. The model is trained and evaluated using the Cleveland Heart Disease database, which contains 13 features and 303 samples. Different algorithms use different rules for producing different representations of knowledge. So, the selection of algorithms to build our model is based on their performance. In this work, we applied and compared several classification algorithms which are (DT, SVM, RF, and KNN) to identify the best-suited algorithm to achieve high accuracy in the prediction of heart disease. After combining the Naive Bayes method with each o","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75525145","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 : 2021-02-01DOI: 10.7763/ijet.2021.v13.1186
M. Z. Hossain, Nishan A. Barua, N. Sultana
Over the last few decades the on-rushing surge of population created an urban structural instability across the under developing parts of the globe like Bangladesh. For instance, due to over population and urban sprawl the current development pattern of this country is culminating in filling up wetlands, changing the course of lakes, narrowing down in some cases killing rivers for urban development leaving the urban health in the face of a disastrous future. The concern for implementing an adaptive sustainable strategy that interacts with wetlands and rivers in the field of urban landscape should be prioritize as the burning question that need to be answered. This paper will be emphasizing on the strategies & guidelines to restore a riparian wetland through imputing wetland sensitive technique saving the riparian edge as well as creating a value of this wetland by suggesting some urban programs that will not only provide recreational value but also provide economic benefit to the local people. In this research there will be a sole intention to develop sustainable and riparian sensitive guidelines which would especially be applicable for riparian wetland development that leaves least impact on nature and promote the adjacent community life and wellbeing of urban health.
{"title":"Adaptive Urban Intervention in a Wetland: A Study from Hamidchar, Bangladesh","authors":"M. Z. Hossain, Nishan A. Barua, N. Sultana","doi":"10.7763/ijet.2021.v13.1186","DOIUrl":"https://doi.org/10.7763/ijet.2021.v13.1186","url":null,"abstract":"Over the last few decades the on-rushing surge of population created an urban structural instability across the under developing parts of the globe like Bangladesh. For instance, due to over population and urban sprawl the current development pattern of this country is culminating in filling up wetlands, changing the course of lakes, narrowing down in some cases killing rivers for urban development leaving the urban health in the face of a disastrous future. The concern for implementing an adaptive sustainable strategy that interacts with wetlands and rivers in the field of urban landscape should be prioritize as the burning question that need to be answered. This paper will be emphasizing on the strategies & guidelines to restore a riparian wetland through imputing wetland sensitive technique saving the riparian edge as well as creating a value of this wetland by suggesting some urban programs that will not only provide recreational value but also provide economic benefit to the local people. In this research there will be a sole intention to develop sustainable and riparian sensitive guidelines which would especially be applicable for riparian wetland development that leaves least impact on nature and promote the adjacent community life and wellbeing of urban health.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80818485","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 : 2021-02-01DOI: 10.7763/ijet.2021.v13.1187
M. Gendy
The sustainable design will reach its full potential by studying structure at a deeper level.” Although structure is essential for realizing any architectural design; however, it is not highlighted as an important principle in the six fundamental principles of sustainability. Most of the design researchers are looking for designs and materials that are less harmful to the environment. This paper surveys design for sustainability and eco-design strategies and, the use of codes that affected the design process in architecture by focusing on the structure system as the main issue, analyzing the adaptation of three parametric structures to accommodate climate condition, by studying structure control framework from the sustainability point of view. The structures control sun rays, wind power, material and rainwater. So finally, structures achieved the meaning of the environmental control that supports sustainability through a suggested framework will guide architects and designers to get a new way of understanding the structure system and its importance for sustainable design.
{"title":"Structure as a Support for Sustainability","authors":"M. Gendy","doi":"10.7763/ijet.2021.v13.1187","DOIUrl":"https://doi.org/10.7763/ijet.2021.v13.1187","url":null,"abstract":"The sustainable design will reach its full potential by studying structure at a deeper level.” Although structure is essential for realizing any architectural design; however, it is not highlighted as an important principle in the six fundamental principles of sustainability. Most of the design researchers are looking for designs and materials that are less harmful to the environment. This paper surveys design for sustainability and eco-design strategies and, the use of codes that affected the design process in architecture by focusing on the structure system as the main issue, analyzing the adaptation of three parametric structures to accommodate climate condition, by studying structure control framework from the sustainability point of view. The structures control sun rays, wind power, material and rainwater. So finally, structures achieved the meaning of the environmental control that supports sustainability through a suggested framework will guide architects and designers to get a new way of understanding the structure system and its importance for sustainable design.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87467747","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 : 2021-01-21DOI: 10.14419/IJET.V10I1.31317
M. Reza, A. Rana
Thermal transport characteristics of Casson nanofluid through a porous microtube is analyzed under the effect of streaming potential and constant pressure gradient with electrokinetic effect associated with applied magnetic field. An analytical solution of the velocity and temperature distribution of Casson-nano fluid through the porous microtube related to combining effects of electromagnetohydrodynamics forces under the effect of streaming potential have been obtained. The significant influences of various non-dimensional parameters on velocity and temperature profiles are discussed in this study. Also, it is revealed the impact of nano particles on flow transport and heat transfer phenomenon. Furthermore, the Nusselt number is calculated analytically. The variations of pertinent parameters such as Hartmann number, Darcy number,Casson parameter, volume friction parameter of nanoparticles, joule heating parameter are delineated graphically and discussed in details.
{"title":"Thermo-fluidic transport of electromagnetohydrodynamic flow of sodium alginate based Casson nano fluid passing through a porous microtube under the effect of streaming potential","authors":"M. Reza, A. Rana","doi":"10.14419/IJET.V10I1.31317","DOIUrl":"https://doi.org/10.14419/IJET.V10I1.31317","url":null,"abstract":"Thermal transport characteristics of Casson nanofluid through a porous microtube is analyzed under the effect of streaming potential and constant pressure gradient with electrokinetic effect associated with applied magnetic field. An analytical solution of the velocity and temperature distribution of Casson-nano fluid through the porous microtube related to combining effects of electromagnetohydrodynamics forces under the effect of streaming potential have been obtained. The significant influences of various non-dimensional parameters on velocity and temperature profiles are discussed in this study. Also, it is revealed the impact of nano particles on flow transport and heat transfer phenomenon. Furthermore, the Nusselt number is calculated analytically. The variations of pertinent parameters such as Hartmann number, Darcy number,Casson parameter, volume friction parameter of nanoparticles, joule heating parameter are delineated graphically and discussed in details.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80919832","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 : 2021-01-21DOI: 10.14419/IJET.V10I1.30878
M. Islam, Abbas Ali, M. J. Alam, Tanvir Ahmad, Salman Sakib
Concrete is a quasi-brittle material and shows different behavior in compression and tension. It shows elastic behavior at initial stage and damage-plasticity behavior beyond elastic limit. Therefore, development of material behavior model of concrete is a complex phenomenon. In this study, concrete damage plasticity theory has been described under experiment on concrete cylinder considering uni-axial compression loading and interpreted with analytical data calculated using CEB-FIP model code equation. The code has divided the stress-strain curve for concrete compression into three sections according to concrete’s elastic and non-elastic behaviors. Those three sections have been considered to calculate analytical data. In experiment, concrete behavior has been observed in two phases. The damage value for different stresses at the various points on the stress strain curve has been calculated. According to analytical data, the concrete shows elastic behavior up to 8.3MPa stress point and no damage occur in the concrete within the limit. However, in experimental data, concrete shows elastic behavior up to only 2.28MPa and damage occurred beyond the stress. Finally, the percentage of damage of concrete due to compression obtained from analysis and experiment has been assessed and compared. Above 32 percent of concrete damage is found for 22.5 MPa in both cases.
{"title":"Analysis of damage-plasticity model of concrete under uniaxial compression loading","authors":"M. Islam, Abbas Ali, M. J. Alam, Tanvir Ahmad, Salman Sakib","doi":"10.14419/IJET.V10I1.30878","DOIUrl":"https://doi.org/10.14419/IJET.V10I1.30878","url":null,"abstract":"Concrete is a quasi-brittle material and shows different behavior in compression and tension. It shows elastic behavior at initial stage and damage-plasticity behavior beyond elastic limit. Therefore, development of material behavior model of concrete is a complex phenomenon. In this study, concrete damage plasticity theory has been described under experiment on concrete cylinder considering uni-axial compression loading and interpreted with analytical data calculated using CEB-FIP model code equation. The code has divided the stress-strain curve for concrete compression into three sections according to concrete’s elastic and non-elastic behaviors. Those three sections have been considered to calculate analytical data. In experiment, concrete behavior has been observed in two phases. The damage value for different stresses at the various points on the stress strain curve has been calculated. According to analytical data, the concrete shows elastic behavior up to 8.3MPa stress point and no damage occur in the concrete within the limit. However, in experimental data, concrete shows elastic behavior up to only 2.28MPa and damage occurred beyond the stress. Finally, the percentage of damage of concrete due to compression obtained from analysis and experiment has been assessed and compared. Above 32 percent of concrete damage is found for 22.5 MPa in both cases.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90982982","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 : 2021-01-13DOI: 10.14419/IJET.V10I1.31294
Marhaini, E. Yusmartini, Kurnia Aini
Composite cement products produced by national cement factories in Indonesia should follow the required quality standards. The quality standard of composite cement refers to the SNI 7064:2014. Some physical parameters of the quality standards set are mortar compressive strength and autoclave expansion. Compressive strength is influenced by C 3 S and C 2 S in the clinker. The reaction of the formation of mineralogical compounds occurs when clinkers formed. Whereas the expansion by autoclave is influenced by the levels of free lime in the cement. This research was conducted to determine the effect of the percentage of tricalcium silicate (C 3 S) on the quality of cement with free lime 2% with variations of C 3 S in clinkers, namely 55%, 57%, 59%, 61%, 63%, 65%, and 67%. Physical parameters tested in this study are compressive strength of mortar, blaine, and autoclave expansion. While the chemical parameters tested in this study are free lime in cement and SO 3 . Based on the research, it was found that if the same percentage of C 3 S quality of cement having FCaO 2%, the ideal condition of the development of compressive strength for FcaO > 2%, 3 to 7 days was at the percentage of C 3 S clinker of 63,48%. Whereas the development of ideal compressive strength for 7 to 28 days is at the clinker C 3 S percentage of 64,85%. For FCaO 2%.
{"title":"The Effect of Tricalcium Silicate (C3S) Percentage in Clinkerson the Cement Quality","authors":"Marhaini, E. Yusmartini, Kurnia Aini","doi":"10.14419/IJET.V10I1.31294","DOIUrl":"https://doi.org/10.14419/IJET.V10I1.31294","url":null,"abstract":"Composite cement products produced by national cement factories in Indonesia should follow the required quality standards. The quality standard of composite cement refers to the SNI 7064:2014. Some physical parameters of the quality standards set are mortar compressive strength and autoclave expansion. Compressive strength is influenced by C 3 S and C 2 S in the clinker. The reaction of the formation of mineralogical compounds occurs when clinkers formed. Whereas the expansion by autoclave is influenced by the levels of free lime in the cement. This research was conducted to determine the effect of the percentage of tricalcium silicate (C 3 S) on the quality of cement with free lime 2% with variations of C 3 S in clinkers, namely 55%, 57%, 59%, 61%, 63%, 65%, and 67%. Physical parameters tested in this study are compressive strength of mortar, blaine, and autoclave expansion. While the chemical parameters tested in this study are free lime in cement and SO 3 . Based on the research, it was found that if the same percentage of C 3 S quality of cement having FCaO 2%, the ideal condition of the development of compressive strength for FcaO > 2%, 3 to 7 days was at the percentage of C 3 S clinker of 63,48%. Whereas the development of ideal compressive strength for 7 to 28 days is at the clinker C 3 S percentage of 64,85%. For FCaO 2%.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79129886","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 : 2021-01-01DOI: 10.21817/ijet/2021/v13i2/211302008
Kanitha Mani, Sasi Kumar Mani
This study was to investigate the effect of productivity in the construction industry due to the un-ergonomic working atmosphere. The construction industry is a large number of workers concerning industry it leads to productivity loss or due risk factors in the working site. In the review, to improve analysis a drawback, we took ergonomic awareness questionnaire survey among the Engineers in Karur district. Based on the survey results, the awareness of term ergonomics is only 20% and Engineers accept to adopt the ergonomics principles. We extended our work to apply ergonomic principles in the site. The ergonomic deficiency was identified, and gradually new ergonomic principles were applied in plastering and brickwork. 1% increase in productivity measured at 7 days of implementation.
{"title":"Study on Effect of Productivity on Applying Ergonomic Principle","authors":"Kanitha Mani, Sasi Kumar Mani","doi":"10.21817/ijet/2021/v13i2/211302008","DOIUrl":"https://doi.org/10.21817/ijet/2021/v13i2/211302008","url":null,"abstract":"This study was to investigate the effect of productivity in the construction industry due to the un-ergonomic working atmosphere. The construction industry is a large number of workers concerning industry it leads to productivity loss or due risk factors in the working site. In the review, to improve analysis a drawback, we took ergonomic awareness questionnaire survey among the Engineers in Karur district. Based on the survey results, the awareness of term ergonomics is only 20% and Engineers accept to adopt the ergonomics principles. We extended our work to apply ergonomic principles in the site. The ergonomic deficiency was identified, and gradually new ergonomic principles were applied in plastering and brickwork. 1% increase in productivity measured at 7 days of implementation.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88454475","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 : 2020-12-31DOI: 10.21817/IJET/2020/V12I6/201206007
M. Fattahi
{"title":"Effects of Elevated Diluent Contents on the Combustion and Emissions of Biogas-Diesel RCCI Engine at Full Load","authors":"M. Fattahi","doi":"10.21817/IJET/2020/V12I6/201206007","DOIUrl":"https://doi.org/10.21817/IJET/2020/V12I6/201206007","url":null,"abstract":"","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82850848","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 : 2020-12-31DOI: 10.21817/IJET/2020/V12I6/201206015
I. B. Dalha, M. A. Said, Z. A. A. Karim
Difficulty in carbon dioxide (CO2) removal, coupled with the poor combustion due to diverse constituent of biogas, encouraged an investigation of the influence of high diluent (CO2, 25 – 45% vol) content and biogas fraction (40 – 70%) on the emissions of biogas/diesel dual-fuel reactivity-controlled compression ignition engine. The experiment was conducted at full load and a speed of 1600 rpm. The results showed distinct temperature trends for all the CO2 ratios and biogas fractions while radiation absorption effect of high CO2 content inhibits the combustion. Biogas with 35% CO2 proportion and a fraction of 50% produced the highest maximum temperature and heat released. The combustion resulted in a lower PPRR minimizing the higher-ringing strength tendency. At a 40% biogas fraction and 25% CO2, which simultaneously showed the highest ITE of 38.29%, the lowest BSFC of 7.41 g/kWh was achieved. An increase in the biogas fraction indicated a significant decrease in the nitrogen oxides (NOx) and particulate (PM) emissions by approximately 62.66, and 26.59%, respectively. Also, an increase in the diluent CO2 content decrease the carbon monoxide (CO) and unburned hydrocarbon (UHC) emissions by approximately 20.30, and 38.83%, respectively. However, an increase in those parameters resulted in a severe UHC and CO emissions trade-off with the NOx and PM emissions, though a 70% biogas fraction indicated the potentials of reducing the impact of the trade-off.
{"title":"Effects of Elevated Diluent Contents on the Combustion and Emissions of Biogas-Diesel RCCI Engine at Full Load","authors":"I. B. Dalha, M. A. Said, Z. A. A. Karim","doi":"10.21817/IJET/2020/V12I6/201206015","DOIUrl":"https://doi.org/10.21817/IJET/2020/V12I6/201206015","url":null,"abstract":"Difficulty in carbon dioxide (CO2) removal, coupled with the poor combustion due to diverse constituent of biogas, encouraged an investigation of the influence of high diluent (CO2, 25 – 45% vol) content and biogas fraction (40 – 70%) on the emissions of biogas/diesel dual-fuel reactivity-controlled compression ignition engine. The experiment was conducted at full load and a speed of 1600 rpm. The results showed distinct temperature trends for all the CO2 ratios and biogas fractions while radiation absorption effect of high CO2 content inhibits the combustion. Biogas with 35% CO2 proportion and a fraction of 50% produced the highest maximum temperature and heat released. The combustion resulted in a lower PPRR minimizing the higher-ringing strength tendency. At a 40% biogas fraction and 25% CO2, which simultaneously showed the highest ITE of 38.29%, the lowest BSFC of 7.41 g/kWh was achieved. An increase in the biogas fraction indicated a significant decrease in the nitrogen oxides (NOx) and particulate (PM) emissions by approximately 62.66, and 26.59%, respectively. Also, an increase in the diluent CO2 content decrease the carbon monoxide (CO) and unburned hydrocarbon (UHC) emissions by approximately 20.30, and 38.83%, respectively. However, an increase in those parameters resulted in a severe UHC and CO emissions trade-off with the NOx and PM emissions, though a 70% biogas fraction indicated the potentials of reducing the impact of the trade-off.","PeriodicalId":14142,"journal":{"name":"International journal of engineering and technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78089916","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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