Sustainability Commons^™

Improving The Energy Efficiency Of Dehumidification Technology At A Large Facility In Florida, Brandon Willson Hoilett

Masters Theses, 2010-2019

This thesis examines energy use and management of twenty heat pipes used in dehumidification systems at a large (10,000+ acre) facility in Florida. Eleven of the twenty heat pipes use electric strip heaters that, when activated, consume 693.8 kW of electrical power from the grid. Solar photovoltaics, specifically a silicon monocrystalline cell with 22.5% efficiency, were considered as a means to provide an alternative energy source and opportunity for cost savings for 11 of the heat pipes (Sunpower, 2011). The remaining nine heat pipes use hot water heaters for which alternative energy sources were not considered. Data gathered and analyzed …

Potential Energy Savings When Using Saline Water For Cooling Chillers In Malta, Mireille Micallef

Masters Theses, 2010-2019

Several cooling systems found in facilities on the coast of St. Julian’s were found to be making use of chillers whose condensers are cooled with saline water as opposed to air. The former practice is advantageous since it results in better chiller performance which can be explained through thermodynamic principles. The principle of operation of water cooled chillers is to reject heat from the condenser to saline groundwater obtained from boreholes through a heat exchanger. The higher temperature saline ground water is then rejected to the sea. Chillers cooled with saline groundwater are subject to the Borehole Drilling and Excavation …

2013 Fall Engr333 Student Seminar Presentation, Claire Philippi, Karl Bratt, Mike Houtman, Brandon Koster

ENGR 333

File for student presentation, given by students in the Fall 2013 class of ENGR333.

2013 Fall Engr333 Vehicle Poster, 2013 Fall Engr333

ENGR 333

Waste vegetable oil (WVO) was chosen by the class as the best fuel source for the Calvin Biofuel Vehicle Project. The class then considered vehicle options and selected a lawnmower to be powered by WVO.

2013 Fall Engr333 Fuel And Facilities Poster, 2013 Fall Engr333

ENGR 333

The objective of the project was to answer the question: “What would it take for Calvin College to operate a biofuel vehicle from campus resources.” The class split into 3 teams:

• Fuel/Feedstock
• Facilities/Infrastructure
• Vehicle

Sustainable Development And The Issue Of Water In The Kagera Region Of Tanzania, Teresa M. Dresner

Theses & Dissertations

Over the last five decades, an abundance of research on sustainable development has emerged in multiple disciplinary areas, but few studies on the economic, social, and environmental dimensions of sustainability have examined water issues for rural communities. Consequently, the purpose of this case study was to understand how a group of rural women from the Kagera region in Tanzania perceived and experienced sustainable development as a result of their improved access to water. The following central questions of the study sought to explore the local meanings of sustainable development and improved water sources: (a) How was life of rural women …

Umphlett Qci Dec 2013, Natalie A. Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Soil Moisture

September Flooding in Colorado

Early October Blizzard

3-Month Precipitation and Temperature Outlooks

U.S. Seasonal Drought Outlook

The Water Wall: A Passive Solar Collection And Thermal Storage Device For Supplementary Radiant Heating, Rhett Roman Noseck

UNLV Theses, Dissertations, Professional Papers, and Capstones

Through the implementation of passive solar building systems, suburbia could take a fresh new step forward toward a progressively more sustainable direction. Making passive solar strategies a priority, master planned community developments would see opportunity to change the style and design of future suburban residences.

The focus and intention of this body of work is to research, design, fabricate, and test a prototype of a passive solar heating device using water as the medium for thermal storage. The size and shape of the design for the water wall device will be determined by the currently built suburban environment; however, for …

Improving Global Impact: How The Integration Of Remotely Reporting Sensors In Water Projects May Demonstrate And Enhance Positive Change, Evan A. Thomas

Mechanical and Materials Engineering Faculty Publications and Presentations

This article argues that improved feedback on the actual impact of development programs may ensure the success of poverty reduction interventions such as water filters, water pumps, latrines, and cookstoves.

A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati

UNLV Theses, Dissertations, Professional Papers, and Capstones

Energy consumption in residential homes has been a subject of research related to sustainability. Reduction in the consumption of energy is a goal of sustainable construction. The Department of Energy (DOE) started a Solar Decathlon competition in 2002 in which the students from different universities around the globe build an energy efficient and affordable home suitable for their climate and location. The main goal of this competition is to select the best home that is designed and built in a sustainable way. In this study, the home designed and constructed for participation in the competition by the students at University …

Permaculture, Roslynn Brain, Blake Thomas

Environment and Society Faculty Publications

No abstract provided.

Evaluating The Effectiveness Of Design For The Environment Tools To Help Meet Sustainability And Design Goals, Ana Maria Leal-Yepes

Theses

Environmental impacts of electronics are a growing concern because the amount and type of materials used in production of the devices, the impacts to the environment from discarded

electronics and the early retirement of products due to rapidly evolving devices, changing design trends, and perceived technological obsolescence. Design for the Environment is a sustainability strategy that aims to reduce the environmental impacts through techniques that enable sustainability solutions during the design decision-making process. In order to suit the diverse

needs of sustainable design practitioners, there has been a large number of tools for Design for the Environment (DfE) developed, confusing …

Gathering "Wild" Food In The City: Rethinking The Role Of Foraging In Urban Ecosystem Planning And Management, Rebecca J. Mclain, Patrick T. Hurley, Marla R. Emery, Melissa R. Poe

Environment and Sustainability Faculty Publications

Recent “green” planning initiatives envision food production, including urban agriculture and livestock production, as desirable elements of sustainable cities. We use an integrated urban political ecology and human–plant geographies framework to explore how foraging for “wild” foods in cities, a subversive practice that challenges prevailing views about the roles of humans in urban green spaces, has potential to also support sustainability goals. Drawing on research from Baltimore, New York City, Philadelphia, and Seattle, we show that foraging is a vibrant and ongoing practice among diverse urban residents in the USA. At the same time, as reflected in regulations, planning practices, …

The Effects Of Large Wildfires On Employment And Wage Growth And Volatility In The Western United States, Max Nielsen-Pincus, Cassandra Moseley, Krista Gebert

Environmental Science and Management Faculty Publications and Presentations

We examined the effect of large wildfires on economic growth and volatility in the western United States. We matched wildfire data with quarterly employment and earnings growth data to assess the specific effect of wildfire on employment and wage growth in western US counties. Wildfires generally tended to exhibit positive effects on employment and wage growth in the quarter(s) during which suppression efforts were active. However, this effect transitioned to increased economic volatility following a wildfire. The effect of wildfire also varied by the type of county in which wildfire occurred. The amount of suppression costs invested locally had the …

Gathering “Wild” Food In The City: Rethinking The Role Of Foraging In Urban Ecosystem Planning And Management, Rebecca J. Mclain, Patrick T. Hurley, Marla R. Emery, Melissa R. Poe

Institute for Sustainable Solutions Publications and Presentations

Recent “green” planning initiatives envision food production, including urban agriculture and livestock production, as desirable elements of sustainable cities. We use an integrated urban political ecology and human–plant geographies framework to explore how foraging for “wild” foods in cities, a subversive practice that challenges prevailing views about the roles of humans in urban green spaces, has potential to also support sustainability goals. Drawing on research from Baltimore, New York City, Philadelphia, and Seattle, we show that foraging is a vibrant and ongoing practice among diverse urban residents in the USA. At the same time, as reflected in regulations, planning practices, …

Fearless: Heather Ipsen, Heather Ipsen

SURGE

In celebration of Sustainability Week on campus, we proudly feature Heather Ipsen ’16 who has fearlessly raised awareness for the environmental issues about which she’s passionate and started a group on campus to better facilitate dialogue between sustainability groups. [excerpt]

Effects Of Water Development On Arid Land Freshwater Ecosystems, Angela L. Strecker

Environmental Science and Management Faculty Publications and Presentations

This presentation focuses on the Columbia Basin Project

The Eugene Water And Electric Board’S Mckenzie River Payment For Watershed Services Program: Research Findings On Ratepayers, Landowners, And Local Stakeholders, Max Nielsen-Pincus

Environmental Science and Management Faculty Publications and Presentations

This presentation focuses on the following research objectives:

• How much are ratepayers willing to pay and what effects that willingness?
• How much do landowners need to receive and what affects their interest?

Fearless: Adrienne Ellis, Adrienne M. Ellis

SURGE

Taking the initiative to change college policies related to LGBTQ issues, restructuring a sustainable community garden in Gettysburg over the summer, and continually being motivated to change and challenge the powers that be through her love of people, Adrienne Ellis ’14 fearlessly fights for what she believes to help the people she loves— everybody. [excerpt]

Growth Of Tropical Dasyatid Rays Estimated Using A Multi-Analytical Approach, Owen R. O'Shea, Matias Braccini, Rory Mcauley, Conrad W. Speed, Mark G. Meekan

Fisheries Research Articles

We studied the age and growth of four sympatric stingrays: reticulate whipray, Himanutra uarnak (n=19); blue mask, Neotrygon kuhlii (n=34); cowtail, Pastinachus atrus (n=32) and blue-spotted fantail, Taeniura lymma (n=40) rays at Ningaloo Reef, a fringing coral reef on the north-western coast of western Australia. Age estimates derived from band counts within sectioned vertebrae ranged between 1 and 27 years (H. uarnak, 1 - 25 yrs.; N. kuhlii, 1.5 - 13 yrs.; P. atrus, 1 - 27 yrs. and T. lymma, 1 -11 yrs.). Due to limitations of sample sizes, we combined several analytical methods …