DSpace Collection:https://elibrary.tucl.edu.np/handle/123456789/170552024-03-16T10:15:22Z2024-03-16T10:15:22ZDESIGN AND FABRICATION OF SAVONIUS WIND TURBINE AND EXPERIMENTAL STUDY OF ITS USE IN A WATER PUMP.Chaulagain, BibishSharma, Prashant PaudyalPoudel, Sandiphttps://elibrary.tucl.edu.np/handle/123456789/212512024-01-08T21:19:16Z2023-04-01T00:00:00ZTitle: DESIGN AND FABRICATION OF SAVONIUS WIND TURBINE AND EXPERIMENTAL STUDY OF ITS USE IN A WATER PUMP.
Authors: Chaulagain, Bibish; Sharma, Prashant Paudyal; Poudel, Sandip
Abstract: The utilization of wind power has been a sustainable way for renewable energy utiliza-
tion in developing countries. The operation of water pump by wind energy has been used
for many years. The project is about designing and fabricating a Helical Savonius wind
turbine for water pumping application. The Helical Bach design was selected because of
simplicity in design, producibility, efficient and able to operate at very low-wind condi-
tions. The blade modeling was done in SolidWorks and analysis was done in ANSYS
2021. The fabrication process involves the selection of appropriate materials, design of
rotor and shafts, followed by manufacturing and assembly of the components. The ex-
perimental study was done at the average wind speed ranging from 1.1 m/s to 4 m/s. The
torque was measured using rope brake dynamometer setup. The CFD approach used for
study at the wind speed of 4m/s and Tip speed ratio(TSR) of 0.32 calculates the coefficient
of performance (Cp) to be 0.107 and in experimental found to be 0.025. The maximum
average wind speed that the turbine was tested was 4 m/s with a rotational speed of 48.18
rpm. The cut-on speed was found to be 1 m/s. Overall, this project demonstrates the
potential of Helical Savonius wind turbine for water pumping applications in low wind
speed conditions thus facilitating the country for promoting indigenous and sustainable
energy resources for low carbon development path.
Description: Today, wind turbines can generate even more energy to power water pumps than tradi-
tional windmills, which have been used to pump water for centuries.As a general rule,
wind energy is used to pump water through a pump driven by a wind turbine. A wind
turbine generates electricity, which is then used to power an electric motor to drive a wa-
ter pump.2023-04-01T00:00:00ZTechno-Economic Analysis and Environmental Benefit Study of Conversion of Gasoline Motorcycle to ElectricPandit, Arpan UpadhyayDahal, RupeshBhusal, Tilakhttps://elibrary.tucl.edu.np/handle/123456789/188962023-08-02T21:17:30Z2023-03-01T00:00:00ZTitle: Techno-Economic Analysis and Environmental Benefit Study of Conversion of Gasoline Motorcycle to Electric
Authors: Pandit, Arpan Upadhyay; Dahal, Rupesh; Bhusal, Tilak
Abstract: This research compared the environmental, technological, and fiscal advantages of
switching from gas-powered to electric bikes. During the analysis, it is established that
purchasing a brand-new gasoline motorbike is more expensive than converting a
motorcycle to run on electricity. Additionally, compared to a gasoline-powered
motorbike, the yearly fuel cost for an electric motorcycle was considerably cheaper,
yielding considerable savings over time. The research took into account the
environmental advantages of electronic bikes, which don't emit any emissions directly
and can run on renewable energy. The findings demonstrated that converting a
motorbike from fuel to electricity provided significant financial and environmental
advantages. Less than three years were needed for the conversion to pay for itself, and
over a ten-year span, there were sizable total savings. While switching from petroleum
to electric bikes may help lessen air pollution, greenhouse gas emissions, and our
reliance on fossil fuels. According to the established statistics and data collected from
different resources and calculating them, converting existing bikes to electric vehicles
is a practical choice for lowering emissions associated with mobility and reaching
sustainable development objectives.
Description: Dependency in the fossil fuel has been common thing for the transportation from the
mid-18th century. In the mid-19th century, electric powered vehicles have become
interesting means to propel the vehicle. With the rising environmental concern and
limited availability of the fossil fuel, research and development for the electric vehicles
has been started2023-03-01T00:00:00ZDESIGN AND ANALYSIS OF CHASSIS FRAME FOR ELECTRIC VEHICLE USING FINITE ELEMENT ANALYSISKunwar, AaratiGuragai, DikshitAryal, Manishahttps://elibrary.tucl.edu.np/handle/123456789/188862023-08-01T21:17:43Z2023-04-01T00:00:00ZTitle: DESIGN AND ANALYSIS OF CHASSIS FRAME FOR ELECTRIC VEHICLE USING FINITE ELEMENT ANALYSIS
Authors: Kunwar, Aarati; Guragai, Dikshit; Aryal, Manisha
Abstract: The increasing demand for the use of electric vehicles has created the need for the design of an electric vehicle chassis frame that could sufficiently bear the load of all the
components to be fitted into the electric vehicle. This paper presents the chassis frame
specially designed for electric vehicles. The Ashby chart is used to select the material,
and structural steel is selected after considering different selection criteria. The concepts of solid mechanics are used to select the beam of suitable cross-sectional area.
Rectangular hollow section beam is selected over the beam of other cross-sections as it
has better performance on vertical bending, lateral bending, and torsional deformations.
Maximum bending moment calculation is performed to figure out the minimum sectional modulus for the rectangular hollow section beam. A rectangular hollow section
beam with a sectional modulus value of 87.54 mm3 with dimension 120*80/8 is used for
the long side members of the frame, whereas a beam with a sectional modulus of 17.05
mm3 of dimension 80*40/4 is used for the cross members linking these side members.
An iterative method is used to figure out the minimum value of sectional modulus that
would effectively handle all the load applied to the chassis frame. The final chassis
frame has a factor of safety of 2.6 for failure by yielding criteria with maximum equivalent stress of 93.58 N ∗ /m2
.
Modal analysis is performed on the frame to determine the natural frequencies of the
frame. It is observed from modal analysis that the natural frequencies don’t match with
the external excitation frequencies, which makes the frame safe to use. Finally, the value
of bending stiffness and torsional stiffness is determined. The bending stiffness is calculated by applying the 1000N load at the centre of the frame in the negative Y-direction
and using the deformation obtained, which gives the value of 6.5197 ∗106 Nm2
. Similarly, rear and front torsional stiffness are obtained by keeping the front and rear parts
fixed and applying loads on free ends. The front and rear torsional stiffness values for
the chassis frame are obtained to be 6.50407∗105 Nm/rad and 7.47384∗105 Nm/rad respectively.
Hence, The chassis is successfully designed for static loading conditions and checked
for vibrations. Further dynamic loading tests could be performed to figure out the behaviour of the chassis frame.
Description: Due to a gradual increase in fuel prices, growing environmental awareness, and the
need to minimize greenhouse gas emissions, electric vehicles have emerged as an appealing alternative to conventional automobiles2023-04-01T00:00:00ZSTUDY AND DESIGN OF THERMAL MANAGEMENT SYSTEM OF LITHIUM-ION BATTERY MODULEUPRETY, ABHISHEKGHIMIRE, DAYA BANDHUNEUPANE, SAROJhttps://elibrary.tucl.edu.np/handle/123456789/188782023-08-01T21:17:53Z2023-04-01T00:00:00ZTitle: STUDY AND DESIGN OF THERMAL MANAGEMENT SYSTEM OF LITHIUM-ION BATTERY MODULE
Authors: UPRETY, ABHISHEK; GHIMIRE, DAYA BANDHU; NEUPANE, SAROJ
Abstract: World is rapidly transforming into the age of Electric Vehicle technology. This
is also associated with green and clean transportation technology. Lithium-ion batteries
are rechargeable energy storage devices used in electrical vehicles due to high power
density, low self-discharge, high efficiency, long life cycle etc. However, there is
change in temperature during the charge/discharge cycle of operation due to heat
generation. And, it is necessary to maintain the temperature of battery within specific
range for the safety and life of the battery by adopting proper thermal management
system. In this project, we aim to study and analyze thermal management systems for
lithium-ion battery modules. For this purpose, we have conducted numerical study of
unit cell module air cooling system using steady state Conjugate Heat Transfer in
ANSYS Fluent 2022R1. Experimental setup is also developed for unit cell module air
cooling. And, comparative study between experimental and numerical solution is
conducted based on cell average temperature. Numerical analysis of 3S3P module air
cooling system is conducted for four different flow channel configurations and varied
velocities for obtaining efficient system. Numerical study of 3S3P module cold plate
liquid cooling system is also conducted with four different flow channel configurations
and varied flow velocities for obtaining suitable cold plate liquid cooling on basis of
cell average temperature and temperature distribution in system. For a unit cell, it is
found that the cell average temperature reaches stable value after certain flow velocity.
There is a decrease in temperature due to an increase in velocity from 0.2 m/s to 4.3m/s
for unit cell module air cooling system. From four different configurations of air
cooling, SIDO configuration has less value of cell average temperature with varied
velocity from response surface analysis and CHT simulation. Average cell temperature
of cobweb type is least for the same coolant inlet velocity among four different liquid
cold plate configurations. It is also found that temperature distribution using cobweb
type cold plate is uniform at lower pressure.
Description: Lithium-ion has a high energy density, more cycle life, and fast-charging
capabilities, but they also produce heat when used. If heat is not adequately dissipated,
it can induce thermal runaway, impair battery performance and lifespan, and even lead
to safety issues like fires and explosions. Battery manufacturers have created several
cooling methods to regulate the heat developed by lithium-ion batteries to address this
issue. A2023-04-01T00:00:00Z