Small wind turbine has great role in rural and remote areas in which the electric accesses from t... more Small wind turbine has great role in rural and remote areas in which the electric accesses from the grid is difficult. In this paper, horizontal axis wind turbine blade which has capacity of 5 kW was designed and verified with the help of the blade element momentum theory. Using this theory, the twist angle and chord length for each section the mid radius and the local tip speed ratio blade were calculated. Lift force is the main force for operating the wind turbine to produce useful power. Thus, Maximum lift-to-drag ratio is criterion for choosing the air foil family. Here SG air foil family were selected because they specifically designed for small wind turbine.
The majority of researchers have carried out simulations using computational fluid dynamics (CFD)... more The majority of researchers have carried out simulations using computational fluid dynamics (CFD) and experimental investigation for design, manufacturing, performance evaluation, understanding flow behavior, efficiency prediction, condition optimization, etc. The main objective of the recent paper is to compare horizontally finned and 45° inclined finned solar air collector absorbers and to select the better construction using numerical simulation. ANSYS Fluent Workbench 2022 with renormalization-group (RNG) group k–ε turbulence model was applied for the analysis of the computational domain of solar air heaters. The simulation results generated using CFD were validated with data from the literature, and the simulation results were in agreement with experimental results from the relevant literature. Based on the simulation results the horizontal finned solar air collector absorber has better heat transfer behavior than the 45° inclined. ABSTRAK Mayoritas peneliti umumnya melakukan s...
Rotary Cement kiln is one of the key equipment in cement industry used to convert calcineous raw ... more Rotary Cement kiln is one of the key equipment in cement industry used to convert calcineous raw meal to cement clinkers .Now days Computational fluid dynamics (CFD) is main tool used for conducting researches in different fields in absence of experimental tools or laboratories this paper aims understanding of the flow behaviour what is takes place inside the Cement rotary kilns using Computational fluid dynamics. Both the Primarily and Secondary types of methodologies were used to reach to final point of the research. The Computational fluid dynamics model used in this program solves the Reynolds-averaged Naiver-Stokes (RANS) with K-∈ turbulence model. The main thermal parameters which are basic for combustion were investigated and confirmed resulted was obtained.
Now day's energy is the fourth basic needs for human beings after food, cloth and shelter. On the... more Now day's energy is the fourth basic needs for human beings after food, cloth and shelter. On the other hand energy has also its own draw back to our living environment especially if we are using fossil fuels as source of energy .Wind energy is among the recently flourishing technologies and get more acceptance from time to time to meet the energy demand of the societies and to reduce the environmental crises happen due to fossil fuels. Thus, Small wind turbines are the best options to provide power for those which have limited power access and areas far from the central grid. Areas which have a lot wild diversity especially birds reciprocating type of small wind turbines are good alternative to save the life of the birds. Designing a reciprocation type wind power harvester which is able to produce electricity with low cost, designing analysis, manufacturing and maintenance was the main objectives of the work. The overall procedure for completing the project starts by collecting relevant data for the design up to finalizing the project as a methodology. The Core parties were designed and suitable material by considering different criteria were selected for individual components. The design made ware safe and turbine is economically feasible and environmentally friendly. Finally, this technical document concluded that the capacity of the Reciprocating Type Wind Power Harvester produces the ideal output power of 10.125kw at the tower high of 20m above the ground with cut in speed of 3m/s wind speed
This project entitled "Recoverable quantity of waste heat at Messebo cement factor y" has tried t... more This project entitled "Recoverable quantity of waste heat at Messebo cement factor y" has tried to quantify the amount of heat loss, the amount of energy and cost saved from the waste heat. Here both primary and secondary data collection methods were included to carry out the study. So, the projects present starts by identifying the main source of waste (which part of cement have high loss), following calculated heat lost from the identified places or machines and final calculating the possible money saved if the waste heat changed to use full form or if it recovered Successful recovery waste heat contributes to lower fuel cost, lower electricity consumption. Kiln surface zones, Preheater cyclone 4 and 5 are the main areas in which high waste was occur. From Kiln surface zones (959.13 kJ), Preheater cyclone 4 and 5(587.199 kJ) amount of heat is lost. From this lost we can recover around 62 kW power is recovered, 44155kwhr/month energy and 26492birr/month could be saved. It recommended the energy management department should invite and support others participation and to study on the heat recovery from the loosing of energy and to study on the alternative energy sources of the company.
Small wind turbine has great role in rural and remote areas in which the electric accesses from t... more Small wind turbine has great role in rural and remote areas in which the electric accesses from the grid is difficult. In this paper, horizontal axis wind turbine blade which has capacity of 5 kW was designed and verified with the help of the blade element momentum theory. Using this theory, the twist angle and chord length for each section the mid radius and the local tip speed ratio blade were calculated. Lift force is the main force for operating the wind turbine to produce useful power. Thus, Maximum lift-to-drag ratio is criterion for choosing the air foil family. Here SG air foil family were selected because they specifically designed for small wind turbine.
Small wind turbine has great role in rural and remote areas in which the electric accesses from t... more Small wind turbine has great role in rural and remote areas in which the electric accesses from the grid is difficult. In this paper, horizontal axis wind turbine blade which has capacity of 5 kW was designed and verified with the help of the blade element momentum theory. Using this theory, the twist angle and chord length for each section the mid radius and the local tip speed ratio blade were calculated. Lift force is the main force for operating the wind turbine to produce useful power. Thus, Maximum lift-to-drag ratio is criterion for choosing the air foil family. Here SG air foil family were selected because they specifically designed for small wind turbine.
The majority of researchers have carried out simulations using computational fluid dynamics (CFD)... more The majority of researchers have carried out simulations using computational fluid dynamics (CFD) and experimental investigation for design, manufacturing, performance evaluation, understanding flow behavior, efficiency prediction, condition optimization, etc. The main objective of the recent paper is to compare horizontally finned and 45° inclined finned solar air collector absorbers and to select the better construction using numerical simulation. ANSYS Fluent Workbench 2022 with renormalization-group (RNG) group k–ε turbulence model was applied for the analysis of the computational domain of solar air heaters. The simulation results generated using CFD were validated with data from the literature, and the simulation results were in agreement with experimental results from the relevant literature. Based on the simulation results the horizontal finned solar air collector absorber has better heat transfer behavior than the 45° inclined. ABSTRAK Mayoritas peneliti umumnya melakukan s...
Rotary Cement kiln is one of the key equipment in cement industry used to convert calcineous raw ... more Rotary Cement kiln is one of the key equipment in cement industry used to convert calcineous raw meal to cement clinkers .Now days Computational fluid dynamics (CFD) is main tool used for conducting researches in different fields in absence of experimental tools or laboratories this paper aims understanding of the flow behaviour what is takes place inside the Cement rotary kilns using Computational fluid dynamics. Both the Primarily and Secondary types of methodologies were used to reach to final point of the research. The Computational fluid dynamics model used in this program solves the Reynolds-averaged Naiver-Stokes (RANS) with K-∈ turbulence model. The main thermal parameters which are basic for combustion were investigated and confirmed resulted was obtained.
Now day's energy is the fourth basic needs for human beings after food, cloth and shelter. On the... more Now day's energy is the fourth basic needs for human beings after food, cloth and shelter. On the other hand energy has also its own draw back to our living environment especially if we are using fossil fuels as source of energy .Wind energy is among the recently flourishing technologies and get more acceptance from time to time to meet the energy demand of the societies and to reduce the environmental crises happen due to fossil fuels. Thus, Small wind turbines are the best options to provide power for those which have limited power access and areas far from the central grid. Areas which have a lot wild diversity especially birds reciprocating type of small wind turbines are good alternative to save the life of the birds. Designing a reciprocation type wind power harvester which is able to produce electricity with low cost, designing analysis, manufacturing and maintenance was the main objectives of the work. The overall procedure for completing the project starts by collecting relevant data for the design up to finalizing the project as a methodology. The Core parties were designed and suitable material by considering different criteria were selected for individual components. The design made ware safe and turbine is economically feasible and environmentally friendly. Finally, this technical document concluded that the capacity of the Reciprocating Type Wind Power Harvester produces the ideal output power of 10.125kw at the tower high of 20m above the ground with cut in speed of 3m/s wind speed
This project entitled "Recoverable quantity of waste heat at Messebo cement factor y" has tried t... more This project entitled "Recoverable quantity of waste heat at Messebo cement factor y" has tried to quantify the amount of heat loss, the amount of energy and cost saved from the waste heat. Here both primary and secondary data collection methods were included to carry out the study. So, the projects present starts by identifying the main source of waste (which part of cement have high loss), following calculated heat lost from the identified places or machines and final calculating the possible money saved if the waste heat changed to use full form or if it recovered Successful recovery waste heat contributes to lower fuel cost, lower electricity consumption. Kiln surface zones, Preheater cyclone 4 and 5 are the main areas in which high waste was occur. From Kiln surface zones (959.13 kJ), Preheater cyclone 4 and 5(587.199 kJ) amount of heat is lost. From this lost we can recover around 62 kW power is recovered, 44155kwhr/month energy and 26492birr/month could be saved. It recommended the energy management department should invite and support others participation and to study on the heat recovery from the loosing of energy and to study on the alternative energy sources of the company.
Small wind turbine has great role in rural and remote areas in which the electric accesses from t... more Small wind turbine has great role in rural and remote areas in which the electric accesses from the grid is difficult. In this paper, horizontal axis wind turbine blade which has capacity of 5 kW was designed and verified with the help of the blade element momentum theory. Using this theory, the twist angle and chord length for each section the mid radius and the local tip speed ratio blade were calculated. Lift force is the main force for operating the wind turbine to produce useful power. Thus, Maximum lift-to-drag ratio is criterion for choosing the air foil family. Here SG air foil family were selected because they specifically designed for small wind turbine.
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