Engineering Commons^™

Electrical Design For Moringa Leaf Dryer, Jake Weiss

Construction Management

The objective of this project is to provide a methodology to the electrical scope of mechanical leaf dryers. This dryer was particularly designed for an off-grid farm in New Longoro, Ghana in which resources and materials are limited. The electrical system must be designed so that it works with motors, variable frequency drives, worm gears, and other materials that could be sourced in Ghana. The system should also draw minimal power so that remaining photovoltaic energy could be utilized on the farm. The system should be simplistic and repeatable for other farmers to utilize. By using both a numerical analysis …

Proposal For A New Construction Management Emerging Trends Elective Course: Principles Of Solar Construction, Nicholas J. Gairaud

Construction Management

California Polytechnic State University (Cal Poly) prides itself on its learn by doing motto which encourages students to participate in hands-on projects and choose elective courses about topics they are interested in. This project is an outline for an Emerging Trends elective course that aims to fill the gap between what students learn in school and what they see in the field. Over the past decade, the use of on-site solar energy generated has skyrocketed in the commercial and residential sectors. The purpose of this course is to inform students about solar requirements and to lay the groundwork for students …

Neca Ghana Project, Michael T. Klee

Construction Management

Cal Poly’s motto is, “Learn by Doing" and for Cal Poly’s NECA Chapter, this isn’t simply a motto, but a directive for proactive change. For my senior project I will be leading the Cal Poly NECA chapter in the design, pre- fabrication and construction of a 5-7kw solar array, community center, ice production room and technology room in the remote fishing village of Agbokpa, Ghana. The solar array will power multiple industrial DC freezers, high efficiency LED lighting and charging stations while additionally powering water filtration and irrigation systems. Like many other fishing villages around the world, Agbokpa has no …

Investigation Of Efficiency Loss Of Distributed Solar Power Due To Soiling And Efficiency Recovery By Rainfall, Amanda Mayumi Tanaka

UNLV Theses, Dissertations, Professional Papers, and Capstones

As the concern with global warming increases causing the need for CO2 reduction, renewable energy is of great interest as it has lower carbon footprint when compared to conventional sources (natural gas, coal, oil and nuclear). Solar energy has been drawing worldwide attention since it can transform sunlight directly into electricity with the use of photovoltaic (PV) cells. However, this technology has some drawbacks that need to be addressed including dust deposition on solar panels, also known as soiling. Soiling can decrease PV panel’s efficiency thereby resulting in less energy production. The soiling rates are very site specific and depend …

Viability Of Solar Power On Jobsites, Braden J. Levalley

Construction Management

The use of solar energy has slowly been on the rise over the past few decades, the full potential of solar energy has not been realized in the realm of construction. Solar power in construction has been slow to catch on, as many of the upfront costs associated with solar power has created a feeling that investing in such systems will ultimately not be worth the investment. This paper attempts to address the issues of upfront costs, the willingness for contractors to invest in renewable energy both now and in the future, and will also identify possible uses for solar …

The Impact Of Waters Of Low Quality On Soiling Removal From Photovoltaic Panels, Alisson Luiz Boeing

UNLV Theses, Dissertations, Professional Papers, and Capstones

Soiling, bird droppings, or the accumulation of dust on the surface of photovoltaic cells, can significantly reduce the solar energy absorption and produce power losses. In solar plants where soiling is a problem, solar facilities use demineralized or distilled water for washing the panels to avoid mineral scale deposits that might interfere with solar irradiance absorption. However, in arid and dusty environments, water is normally scarce. For cleaning solar panels, the use of low quality water in lieu of the industry-standard demineralized water could conserve fresh water. The objectives of this research were as follows: evaluate the impacts of low …

Student Led Service-Learning Initiative: Installation Of Photovoltaic Water-Pump Systems In The Ecuador Amazon Rainforest, Kelly M. Williams

Construction Management

The National Electrical Contractors Association (NECA) student chapter at California Polytechnic State University in San Luis Obispo, California was selected by an association called ELECTRI International to participate in their Student Community Service Initiative program. The goal of the program is to “Encourage construction management and electrical engineering students to take an active role in improving access to electricity in developing communities” (“Student Passport Program”). This paper summarizes the findings of a student-led project made possible by ELECTRI International’s program. The project included coordinating, funding, and executing a project to facilitate the installation of photovoltaic water pump systems to indigenous …

Medicial Clinic At Mission Twentyfive35 Vocational Village - Dominican Republic, Sarah C. De Los Reyes

Construction Management

This community medical clinic will be the first of its kind in the rural town of Villa Tapia, Dominican Republic It is Phase II of a five-phase master plan drafted by religious organization Mission Twenty-Five35, founded by the Romano family The team consists of Cal Poly undergraduate students: Griffin Chierici (Architecture), Erica Croft and Tommy Sidebottom (Architectural Engineering), and Sarah De Los Reyes (Construction Management), backed by the guidance and support of non-profit organization Journeyman International and A/E firm Smith Group JJR The task was to design a clinic that would serve as a pediatric and urgent care center but …

Building A Solar Farm On A Rolling Landscape: A Case Study, Jakob Riley Schork

Construction Management

The well-being of the environment in the United States is becoming dependent on a change from unreliable and scarce resources such as coal as a means to generate electricity to a more eco-friendly and abundant source. Solar farms provide the opportunity to generate electricity with no effect on global warming, no environmentally hazardous emissions, and are not affected by the fluctuating costs of fuel. One construction company in particular has noticed this as not only a terrific opportunity to improve the nations’ environmental footprint, but also as a tremendous business opportunity; Swinerton. Swinerton recently developed a renewable energy division that …

Roman Catholic Elementary Photovoltaic Project, Joe Gugale

Construction Management

The use of photovoltaic panels in construction is rapidly growing all around the world. This paper summarizes the findings of a student-based project in Belize that was installed December 2016. The San Pedro Roman Catholic Primary School is the largest school on the island of Ambergris Caye, Belize with over 700 students in 22 classrooms ranging from Kindergarten to 8th grade. Although the school has power supplied from the local electrical utility, power outages occur frequently and the cost of electricity is considerable.

The project had several issues related to preparing the design, acquiring the materials and equipment, and developing …

Assessment Of Individual Photovoltaic Module Performance After 26 Years Of Field Exposure At The Telonicher Marine Lab In Trinidad, California, Jake Rada

Projects

In 1990, 192 ARCO M75 photovoltaic (PV) modules were installed as a part of the Schatz Solar Hydrogen Project at the Humboldt State University (HSU) Telonicher Marine Lab in Trinidad, California, within 150 m of the Pacific Ocean. This 9.2 kW-rated PV array was used to power the marine laboratory air compressor and an electrolyzer. Individual current-voltage (IV) curve tests were performed on each of the PV modules prior to the array’s construction in 1990 and again in 2001, 2010, and, most recently, in 2016, following decommissioning of the array. After 25.5 years of use, 188 of the original 192 …

Photovoltaic Installation In Ecuador And The Amazon, David Mulder

Construction Management

The Photovoltaic Installation in Ecuador and The Amazon is part of a collaborative effort between two major construction clubs at Cal Poly: NECA and MCAA. Four students, two from each club, traveled with two faculty to install photovoltaics for two different communities. The first project was a solar installation to provide fresh water for the community of Santa Rosa. Project number two, was a sixteen-panel installation in Shell, Ecuador for the non-profit Reach Beyond. The main goals of each project were to provide fresh water, and achieve net zero electrical consumption.

A Novel Approach For Evaluating The Impact Of Fixed Variables On Photovoltaic (Pv) Solar Installations Using Enhanced Meta Data Analysis Among Higher Education Institutions In The United States, Diane N. De Hoyos

Open Access Theses & Dissertations

The global demand for electric energy has continuously increased over the last few decades. Some mature, alternative generation methods are wind, power, photovoltaic panels, biogas and fuel cells. In order to find alternative sources of energy to aid in the reduction of our nation's dependency on non-renewable fuels, energy sources include the use of solar energy panels. The intent of these initiatives is to provide substantial energy savings and reduce dependence on the electrical grid and net metering savings during the peak energy-use hours.

The focus of this study explores and provides a clearer picture of the adoption of solar …

Photovoltaics: An Investigation Into The Origins Of Efficiency On All Scales, Jeremy Alexander Bannister

Senior Projects Spring 2016

This project is comprised of a set of parallel investigations, which share the common mo- tivation of increasing the efficiency of photovoltaics. First, the reader is introduced to core concepts of photovoltaic energy conversion via a semi-classical description of the phys- ical system. Second, a key player in photovoltaic efficiency calculations, the exciton, is discussed in greater quantum mechanical detail. The reader will be taken through a nu- merical derivation of the low-energy exciton states in various geometries, including a line segment, a circle and a sphere. These numerical calculations are done using Mathematica, a computer program which, due to …

Integrated Sustainability Decision-Making Framework, Michael Paul Cole

Open Access Theses & Dissertations

The Integrated Sustainability Decision-Making Framework (ISDMF) is an 'ideal case' framework developed at the University of Texas El Paso (UTEP) from 2012 to present to provide the most comprehensive and concise sustainability strategy and decision-making template available.

Sustainable decision-making improves community Quality of Life, but is often beyond the reach of the majority. A framework that is most approachable, actionable, and adoptable can accelerate convergence on and continued operation of a sustainable solution. Research confirms that published frameworks continuously emerge, and are infinite in number. Iterations benefit from prior work, and contribution occurs when an 'ideal case' is envisioned, best …

Experimental Investigation Of Wind Effect On Solar Panels, Ayodeji Abiola-Ogedengbe

Electronic Thesis and Dissertation Repository

Photovoltaic Solar Panels for electricity generation are outdoor low-rise structures that are vulnerable to damage by the wind. The existing building codes do not contain information about the impact of the wind on these structures and hence do not provide comprehensive guidelines to mitigate such impact. The present study is a contribution to the ongoing efforts to codify the wind loading on solar panels. In this study, experimental investigations were conducted on the scaled model of a ground-mounted solar panel structure whose surface is geometrically similar to an inclined flat plate and mounted on three-legged support. The panel comprises of …

Implementing Conductive Concrete With Photovoltaic Energy To Develop Anti-Icing Airfield Runways, Adam Benjamin Osweiler

Graduate Theses and Dissertations

Snow and ice accumulation on airport runways force airports to cancel or significantly delay flights. Winter weather can also drastically affect airport safety during times of aircraft takeoff and landing. During these times, countless dollars are used to remove snow and return airports to their functional conditions. In this thesis, a conductive concrete solar energy system will be examined in order to prevent snow and ice accumulation. The objective of this research is to implement a conductive concrete overlay system on airport runways in conjunction with photovoltaic energy so that no frost precipitation accumulates on the runway surface.