Matching Items (12)
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- All Subjects: Renewable Energy
- Creators: Mechanical and Aerospace Engineering Program
- Creators: Miller, April
- Resource Type: Text
Description
The global energy demand is expected to grow significantly in the next several decades and support for energy generation with high carbon emissions is continuing to decline. Alternative methods have gained interest, and wind energy has established itself as a viable source. Standard wind farms have limited room for growth and improvement, so wind energy has started to explore different directions. The urban environment is a potential direction for wind energy due to its proximity to the bulk of energy demand. CFD analysis has demonstrated that the presence of buildings can accelerate wind speeds between buildings and on rooftops. However, buildings generate areas of increased turbulence at their surface. The turbulence thickness and intensity vary with roof shape, building height, and building orientation. The analysis has concluded that good wind resource is possible in the urban environment in specific locations. With that, turbine selection becomes very important. A comparison has concluded that vertical axis wind turbines are more useful in the urban environment than horizontal axis wind turbines. Furthermore, building-augmented wind turbines are recommended because they are architecturally integrated into a building for the specific purpose of generating more energy. The research has concluded that large-scale generation in the urban environment is unlikely to be successful, but small-scale generation is quite viable. Continued research and investigation on urban wind energy is recommended.
ContributorsKlumpers, Ryan Scott (Author) / Calhoun, Ronald (Thesis director) / Huang, Huei-Ping (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2014-05
Description
As the need for environmentally friendly and renewable fuel sources rises, many are considering alternative fuel sources, such as solar power. The device explored in this report uses solar power, in theory, to heat a metal oxide, cerium oxide, to a desired temperature. At specific temperatures and pressures, a reaction between an input gas, carbon dioxide or water vapor, and the metal oxide may produce fuel in the form of hydrogen or carbon monoxide. In order to reach the temperatures required by the reaction, a filament inside a high-temperature radiant heater must be heated to the desired temperature. In addition, the system’s pressure range must be satisfied. A pressure and temperature measurement device, as well as a voltage control, must be connected to an interface with a computer in order to monitor the pressure and temperature of different parts of the system. The cerium oxide element must also be constructed and placed inside the system. The desired shape of the cerium oxide material is a tube, to allow the flow of gas through the tubes and system and to provide mechanical strength. To construct the metal oxide tubes, they need to be extruded, dried, and sintered correctly. All the manufactured elements described serve an essential purpose in the system and are discussed further in this document.
This report focuses on the manufacturing of ceria tubes, the construction of a high-temperature radiant heater filament, and the implementation of a pressure measurement device. The manufacturing of ceria tubes includes the extrusion, the drying, and the sintering of the tubes. In addition, heating element filament construction consists of spot-welding certain metals together to create a device similar to that of a light bulb filament. Different methods were considered in each of these areas, and they are described in this report. All of the explorations in this document move towards the final device, a thermochemical reactor for the production of hydrogen (H2) and carbon monoxide (CO) from water (H2O) and carbon dioxide (CO2).
The results of this report indicate that there are several important manufacturing steps to create the most desirable results, in terms of tube manufacturing and heating element design. For the correct tube construction, they must be dried in a drying rack, and they must be sintered in V-groove plates. In addition, the results of the heating element manufacturing indicate that the ideal heating element filament needs to be simple in design (easily fixed), cost-effective, require little construction time, attach to the ends of the system easily, provide mechanical flexibility, and prevent the coil from touching the walls of the tube it lies in. Each aspect of the ideal elements, whether they are tubes or heating elements, is explored in this report.
This report focuses on the manufacturing of ceria tubes, the construction of a high-temperature radiant heater filament, and the implementation of a pressure measurement device. The manufacturing of ceria tubes includes the extrusion, the drying, and the sintering of the tubes. In addition, heating element filament construction consists of spot-welding certain metals together to create a device similar to that of a light bulb filament. Different methods were considered in each of these areas, and they are described in this report. All of the explorations in this document move towards the final device, a thermochemical reactor for the production of hydrogen (H2) and carbon monoxide (CO) from water (H2O) and carbon dioxide (CO2).
The results of this report indicate that there are several important manufacturing steps to create the most desirable results, in terms of tube manufacturing and heating element design. For the correct tube construction, they must be dried in a drying rack, and they must be sintered in V-groove plates. In addition, the results of the heating element manufacturing indicate that the ideal heating element filament needs to be simple in design (easily fixed), cost-effective, require little construction time, attach to the ends of the system easily, provide mechanical flexibility, and prevent the coil from touching the walls of the tube it lies in. Each aspect of the ideal elements, whether they are tubes or heating elements, is explored in this report.
ContributorsCaron, Danielle (Author) / Milcarek, Ryan (Thesis director) / Ermanoski, Ivan (Committee member) / Stechel, Ellen (Committee member) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Ensuring that people across the globe have enough water and electricity are two large issues that continue to grow. This study performs a test on whether using solar photovoltaic modules to shade water can potentially help diminish the issues of water and power. Using the setup of a PV module shading water, a stand-alone PV module, and unshaded water, it was found that shading water can reduce evaporation and lower PV module operating temperature at the same time. Using averaged data from two days of testing, the volume per unit surface area of water that evaporated per hour was 0.319 cm3/cm2 less for the shaded water compared to the unshaded water. The evaporation rates found in the experiment are compared to those of Lake Mead to see the amount of water lost on a large scale. For the operating temperature of the PV module, the module used for shading had a consistently lower temperature than the stand-alone module. On the first day, the shading module had an average temperature 5.1 C lower than the stand-alone module average temperature. On day two, the shading module had an average temperature 3.4 C lower than the stand-alone module average temperature. Using average temperatures between the two days from 10:30am and 4:45pm, the average daily temperature of the panel used for shading was 4.5C less than the temperature of the stand-alone panel. These results prove water shading by solar PV modules to be effective in reducing evaporation and lowering module operating temperature. Last, suggestions for future studies are discussed, such as performance analysis of the PV modules in this setting, economic analysis of using PV modules as shading, and the isolation of the different factors of evaporation (temperature, wind speed, and humidity).
ContributorsLee, John C (Author) / Phelan, Patrick (Thesis director) / Roedel, Ronald (Committee member) / Dean, W.P. Carey School of Business (Contributor) / Mechanical and Aerospace Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
The purpose of this project focuses on analyzing how a typically brittle material, such as PLA, can be manipulated to become deformable, through the development of an origami structure, in this case—the Yoshimuri pattern. The experimental methodology focused on creating a base Solidworks model, with varying hinge depths, and 3D printing these various models. A cylindrical shell was also developed with comparable dimensions to the Yoshimuri dimensions. These samples were then tested through compression testing, with the load-displacement, and thus the stress-strain curves are analyzed. From the results, it was found that generally, the Yoshimuri samples had a higher level of deformation compared to the cylindrical shell. Moreover, the cylindrical shell had a higher stiffness ratio, while the Yoshimuri patterns had strain rates as high as 16%. From this data, it can be concluded that by changing how the structure is created through origami patterns, it is possible to shift the characteristics of a structure even if the material properties are initially quite brittle.
ContributorsSundar, Vaasavi (Author) / Jiang, Hanqing (Thesis director) / Kingsbury, Dallas (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / School of Social Transformation (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
This thesis is a two-part theatre and literature project on The Importance of Being Earnest by Oscar Wilde. The research component will consist of gathering information from the origins of this play in writing and in production to further understand my knowledge of the time it was written in and how it has been interpreted over the years. The theatrical elements will come as I direct and produce my own production of the play, and compare my research of Wilde's play and past productions to my own directorial decisions in attempt to make a successful student performed play.
ContributorsMarnick, Courtney Melissa (Author) / Miller, April (Thesis director) / Brown, Dori (Committee member) / Department of Marketing (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
This thesis traces the queer legacy of the Frankenstein myth from James Whale’s filmic adaptations, Frankenstein and Bride of Frankenstein, to Mexico’s first adaptation of the myth, El Monstruo Resucitado (1953). Chano Urueta’s El Monstruo Resucitado adapted the Frankenstein legend not from Mary Shelley’s source text but from Whale’s films, which themselves are infused with the queer sensibilities of a homosexual director. This new Mexican Frankenstein myth created a Monster that both reflects the culture of the Hollywood context from which it is adapted and responds to its own unique Mexican backdrop. Discussed only superficially in monster studies scholarship, El Monstruo Resucitado has rarely been examined for its contributions to Mexican horror cinema or queer horror studies as a whole. This thesis explores El Monstruo Resucitado's utility as a queer parable by working through José Esteban Muñoz’s theory of Disidentifications, positioning the film as a cultural object valuable to queer identity formation for minoritarian audiences in Mexico. By doing so, this thesis aims to broaden the conversation surrounding the role of the monster in culture and highlight Mexican monster horror like El Monstruo Resucitado as significant to the global tradition of the monster movie.
ContributorsPlata, Maxwell (Author) / Van Engen, Dagmar (Thesis director) / Miller, April (Committee member) / Barrett, The Honors College (Contributor) / School of Music, Dance and Theatre (Contributor)
Created2022-05
Description
This project involved research into solar thermal and geothermal energy generation as possible solutions to the growing U.S. energy crisis. Background research into this topic revealed the effects of climate and environmental impacts as major variables in determining optimal states. Delving into thermodynamic engineering analyses, the main deliverables of this research were mathematical models to analyze plant efficiency improvements in order to optimize the cost of operating solar thermal and geothermal power plants. The project concludes with possible future research areas relating to this field.
ContributorsRattner, Andrew (Author) / Beyer, Luke (Co-author) / Kwon, Beomjin (Thesis director) / Wilbur, Joshua (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of International Letters and Cultures (Contributor)
Created2024-05
Description
This project involved research into solar thermal and geothermal energy generation as possible solutions to the growing U.S. energy crisis. Background research into this topic revealed the effects of climate and environmental impacts as major variables in determining optimal states. Delving into thermodynamic engineering analyses, the main deliverables of this research were mathematical models to analyze plant efficiency improvements in order to optimize the cost of operating solar thermal and geothermal power plants. The project concludes with possible future research areas relating to this field.
ContributorsBeyer, Luke (Author) / Rattner, Andrew (Co-author) / Kwon, Beomjin (Thesis director) / Wilbur, Joshua (Committee member) / Barrett, The Honors College (Contributor) / School of International Letters and Cultures (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2024-05
Description
This action research study took a mixed methods approach to examine junior and senior student engagement at the honors college in the downtown campus of Arizona State University. The purpose of the study was to better understand the lack of engagement with junior and senior students within the college. The study sought to examine the usage of year specific programs and the possibility of influence on the target populations’ engagement. In addition, the study focused on understanding the usage of such programs and its ability to influence student perception of coping with transitions. The growth of honors education and the value of student engagement lead the study. Life Hacks is a series of programs designed to engage the target population by addressing an anticipated transition. This study focused on exploring junior and senior honors student engagement and the utilization of programs to address the student’s ability to cope with transitions. The program was divided into six workshops that spanned the semester and were taught by college partners who were deemed a resource on the subject matter. Two surveys were deployed: one at the beginning of the semester and the other at the end of the semester. Participants were selected based on their academic status as a junior or senior within the honors college on campus and their age rage. All participants traditionally matriculated from high school and were between the ages of 18-25. Two focus groups, with a total of eight participants (4 juniors and 4 seniors), were conducted at the end of the semester to gather qualitative data. Findings indicated that participants allowed their emotions to influence their ability to cope with transitions. Relationships with peers and staff were important to decision making processes and network building for junior and senior participants. Students within the study set expectations for the college and themselves that influence how they relate to college and their relation to adulthood. The implications of practice that resulted from the study involved improving student access to information and assisting students with understanding the need for the resource and how to apply it to their current and future challenges.
ContributorsGatewood, Kira Kevanah (Author) / Harris, Lauren (Thesis advisor) / Aska, Cassandra (Committee member) / Weatherly, Kimberly (Committee member) / Arizona State University (Publisher)
Created2019
Description
Colleges and universities have goals and strategies in place to fill their on-campus housing facilities with students. At Arizona State University (ASU), the goal is to fill every bedspace on campus. All first-year students are expected to live on campus their first year at ASU. In Barrett, the Honors College (BHC), students are expected to live on-campus their first and second year at ASU. This study explores the BHC upperdivision communities to better understand why students are not returning to live on campus beyond the two-year live-on expectation. In this study, the researcher created a website to better inform students of the renewal process and the benefits of living on-campus. More than 200 BHC upperdivision students participated in this study through interviews and surveys. Quantitative results of the study indicated a positive and significant correlation between students who believe it costs less to live on campus, enjoy living on campus, interact with faculty and staff outside of the classroom with intent to live on campus the next academic year. Students who felt their currently living situation had a positive impact on their overall emotional/mental wellbeing, feel a sense of community or connection to others, and feel more connected because they live on campus are more likely to intend to live on campus. Students who were surveyed after the implementation of the renewal website believed it cost less to live on campus than off campus, felt that it was easier to navigate the application, and felt that they had a better understanding of the renewal process. Qualitative results of the study indicated students were deciding to live off campus due to the limited room options and the cost of on-campus housing. Students did not feel that there was a sense of community in BHC upperdivision housing, but they did feel like living on-campus was convenient and opened opportunities to get involved. The renewal website did not have an effect on students’ behavior, knowledge and intent to renew housing, and the renewal process was easy to navigate for some of the participants and difficult to navigate for the other participants.
ContributorsLaRoche, Catherine-Ann Hiileilani (Author) / Chen, Ying-Chih (Thesis advisor) / Hermann, Kristen J (Committee member) / Staton, Shannon (Committee member) / Arizona State University (Publisher)
Created2020