Architectural Engineering Commons^™

The Experiment And Analysis Of Active Mechanisms For Enhancing Heat And Mass Transfer In Sorption Fluids, Ziqi Shen

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

This project was funded by American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE RP-1462). It is a three years’ research, including the literature review, labs construction, experiments and data analysis.

In this thesis, first of all, we conducted literature review of mechanism motion influence on heat and mass transfer and additive effect in absorption chiller. This part helps us understand the basic idea of how mechanism motion affects the heat and mass transfer of sorption fluids and gives us reference on how to select the experiment instrument and the experiment operation range.

In the second part, the instrument selection …

3 E’S Enterprise Architecture Framework (That Encompasses Business Process, Information Systems, And Information Technology), Nicholas C. Bucciarelli Mr.

Articles

No abstract provided.

Accreditation Insights And The Next Body Of Knowledge, Allen Estes, Thomas A. Lenox, Kenneth J. Fridley, Richard O. Anderson P.E.

Architectural Engineering

The American Society of Civil Engineers (ASCE) published the second edition of the Civil Engineering Body of Knowledge (BOK2) in 2008 expanding the knowledge, skills and attitudes required of future civil engineers. There were major changes to the BOK2 as the number of expected outcomes increased from 15 to 24 and the cognitive level of attainment was more precisely defined. A major implementation and enforcement mechanism for the BOK is the ABET accreditation criteria which includes both general criteria 3 and 5 and the discipline-specific program criteria. Of those, the program criteria are the easiest to change.

In 2013, ASCE …

Inquiry-Based Learning To Explore The Design Of The Built Environment, Anahid A. Behrouzi, Daniel Kuchma

Architectural Engineering

Typically in introductory structural engineering courses with a lab component, the instructional approach is to present the underlying theory via pre-lab lecture/reading and subsequently have students conduct guided experiments that affirm that theory. The new Fall 2015 course offering described in this paper takes the reverse approach where students’ hands-on exploration of a concept occurs prior to formal instruction. As such, the course is based upon Da Vinci’s perspective that: “[i]n the examination of physical problems I begin by making a few experiments,…we must commence with experience, and strive by means of it to discover truth.”

In the course, student …

Enhancing An Upper Division Structural Dynamics Course Using K'Nex Toys, Allen Estes, Cole C. Mcdaniel, Alec Roberto Zavala

Architectural Engineering

K’nex toys consist of various plastic rods and connectors cleverly-sized to allow the creation of a variety of structures. While the K’nex Corporation focuses on the K-12 market, there are a myriad of engineering applications that have been demonstrated at the university level. Many of these occur at the lower division level in freshman experience courses or introductory statics courses. Other applications have included constructing structural models for structural design and capstone courses. This paper takes this use of classroom technology even further by demonstrating how K’nex pieces can be used effectively in an upper-division, highly technical structural dynamics / …

Physical Artifacts In Introductory-Level Reinforced Concrete Design Instruction, Anahid A. Behrouzi

Architectural Engineering

Incorporating physical models and demonstrations in the introductory-level reinforced concrete design course has shown to be beneficial for students in clarifying and engraining fundamental concepts. The research study conducted at the author’s university during Spring 2015 involved the design, fabrication, and implementation of models to supplement traditional lectures on topics that students have found challenging in prior offerings of the course. Specifically, these demonstration tools illustrate:

• Three-dimensional stress blocks for rectangular/flanged beams subjected to varying levels of flexural demand • Distinctions between the flexural behavior of one and two-way slabs • Placement of steel reinforcement for singly/doubly reinforced beams …

Significance Of Parameters Affecting The Performance Of A Passive Down-Draft Evaporative Cooling (Pdec) Tower With A Spray System, Daeho Kang, Richard K. Strand

Publications and Research

PDEC towers with spray systems are known to achieve substantial energy savings. Various parameters such as the wet-bulb depression, the tower height, and the wind speed have been known to be key factors affecting the performance of the system. To date, the significance of these parameters and other important factors have not been adequately treated in the literature. There also has been a lack of models that can successfully investigate potential benefits of the system under various conditions where this particular system could be applicable. To address these critical issues, this study performed a parametric analysis by using a FLUENT …

On The Flux Richardson Number In Stably Stratified Turbulence, Subhas K. Venayagamoorthy, Jeffrey R. Koseff

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The flux Richardson number Rf (often referred to as the mixing efficiency) is a widely used parameter in stably stratified turbulence which is intended to provide a measure of the amount of turbulent kinetic energy k that is irreversibly converted to background potential energy (which is by definition the minimum potential energy that a stratified fluid can attain that is not available for conversion back to kinetic energy) due to turbulent mixing. The flux Richardson number is traditionally defined as the ratio of the buoyancy flux B to the production rate of turbulent kinetic energy P. An alternative generalized definition …

Benefit-Cost Analysis Of Commercially Available Activated Carbon Filters For Indoor Ozone Removal In Single-Family Homes, J. R. Aldred, E. Darling, G. Morrison, J. Siegel, R. L. Corsi

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study involved the development of a model for evaluating the potential costs and benefits of ozone control by activated carbon filtration in single-family homes. The modeling effort included the prediction of indoor ozone with and without activated carbon filtration in the HVAC system. As one application, the model was used to predict benefit-to-cost ratios for single-family homes in 12 American cities in five different climate zones. Health benefits were evaluated using disability-adjusted life-years and included city-specific age demographics for each simulation. Costs of commercially available activated carbon filters included capital cost differences when compared to conventional HVAC filters of …

Cement Hydration-Based Micromechanics Modeling Of The Time-Dependent Small-Strain Stiffness Of Fly Ash-Stabilized Soils, Xin Kang, Louis Ge, Wen Cheng Liao

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A contact mechanics model, based on the Hertzian elastic contact theory and cementation coating development at particulate scale, was established to predict the time-dependent small-strain stiffness of Class C fly ash-stabilized soils during curing. The cementation coating development model was developed at particulate level based on the Arrhenius law to predict the contact radius growth. A hyperbolic time-temperature relationship was proposed to capture the temperature change of fly ash-stabilized soils and links the pozzolanic reaction rate with curing time. Model-predicted small-strain stiffness was evaluated through both published and experimental test results with good success. The micromechanics modeling indicated that the …

Modification Of Upper-Ocean Temperature Structure By Subsurface Mixing In The Presence Of Strong Salinity Stratification, Emily L. Shroyer, Daniel L. Rudnick, J. Thomas Farrar, Byungho Lim, S. Karan Venayagamoorthy, Louis C.St Laurent, Amrapalli Garanaik, James N. Moum

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Bay of Bengal has a complex upper-ocean temperature and salinity structure that is, in places, characterized by strong salinity stratification and multiple inversions in temperature. Here, two short time series from continuously profiling floats, equipped with microstructure sensors to measure subsurface mixing, are used to highlight implications of complex hydrography on upper-ocean heat content and the evolution of sea surface temperature. Weak mixing coupled with the existence of subsurface warm layers suggest the potential for storage of heat below the surface mixed layer over relatively long-time scales. On the diurnal time scale, these data demonstrate the competing effects of …

Architectural Response To Humanitarian Crises, Gul Nabi Afridi

Center for Rebuilding Sustainable Communities after Disasters Publications

Humanitarian design has become a popularized phenomenon in recent years, and it comes in all shapes and sizes. Humanitarian architecture basically means architecture designed for those in need. It is “seeking architectural solutions to humanitarian crises and bringing professional design services to communities in need.” Mostly, Humanitarian crises comes into account due to disasters either natural or human induced disaster. Any community which has been disturbed due to any disaster, having basic unstabilities like physical and social. These issues are further sub-categorized as, lives, properties, psychological, economic and education issues. Darra Adam Khel is a region which has been affected …

Cooperative Housing Design:Exploring Alternative Forms Of Habitation And Pedagogy, Jim Roche

Conference papers

Provision of suitable affordable habitation for all seems to allude society, not least in Ireland which experiences yet another crippling housing crisis. Housing bubbles, which often ruin economies, lead to housing crises which ruin so many lives. Options for habitation delivery are mostly based on the free market, whether they be in the private or the now almost non-existent social and affordable sector. The prevailing procurement methods fail to meet such a basic human need yet alternative options are limited and are not encouraged by government or the private sector.

Structural Calculations For Tia Ana's Sustainable Development, Danielle Rustagi

Architectural Engineering

Tia Ana’s Sustainable Development is located in the El Salvadorian countryside, just outside of the capital city San Salvador. Currently, Tia Ana’s is located in the city of San Salvador, where there is little room for the children and a significant amount of violence and instability. In order to make the relocation of the orphanage feasible financially, a portion of the countryside landscape will contain a small hotel and numerous small dwellings nested in the tropical surroundings. By relocating the orphanage to the countryside, the children housed by Tia Ana will experience a safer and more stable environment and this …

Structural Calculations For Nepal Vocational Learning Center, Nicholas Petrarca

Architectural Engineering

This project goal is to build a Leadership Vocational School for youth, women, differently abled, and local leaders of rural and Kathmandu Nepal. The client for this project is an organization called Sakcham Rural Nepal and they partnered with a humanitarian organization called Journeyman International to find Architecture and Architectural Engineering students to design a safe, attractive and functional building to fit their needs.

Commercial Vertical Farm Design Phase 1, Tyler Tappin, Bryan Gomes

Architectural Engineering

Until recent years, vertical farming, or urban agriculture, has usually been referred to as more of a science fiction concept than a realistic means of production. However, it is becoming increasingly apparent that these urban crop­growing structures are not only technologically feasible, but efficient. These structures are entering the realm of economic feasibility as well, appearing in niche markets near large cities. Most of the facilities, however, are generally restricted in size to single­story buildings. The objective of this project was to design a multi story structure that would be well­equipped to house a large vertical farming operation. Some of …

Shell House Evaluation, Michael Bauer

Architectural Engineering

The Shell House has been a wonder of Poly Canyon's Experimental Laboratory for over 50 years. The structure was built in 1964, at a time when these experimental structures were being encouraged in the canyon. This report is an evaluation of the seismic performance of the Shell House in an effort to understand new modeling techniques. The evaluation utilizes these computer programs to map the complex geometry of the Shell House.

The Built Environment, Nicholas J. Petrarca, Aaron Boucher, Nathaniel Hall, Alejandro Lopez, Nicholas Reindel, Emily Setoudeh, Sean Westpahl, Lacy Williams

Architectural Engineering

This project was a very fast paced and high pressure design project where Architectural Engineering students and an architect worked with an noteworthy artist to design and construct a large steel sculpture made purely from recycled materials.

Broad Street Plaza, Madison Lynn Busby, Jenny Nguyen

Architectural Engineering

No abstract provided.

Broad Street Apartments, Carla Alejandra Simental, Viviana C. Sanchez

Architectural Engineering

No abstract provided.