Teaching Sustainable Design Using Bim And Project-Based Energy Simulations,
2012
University of Nebraska - Lincoln
Teaching Sustainable Design Using Bim And Project-Based Energy Simulations, Zhigang Shen, Wayne Jensen, Tim Wentz, Bruce Fischer
Durham School of Architectural Engineering and Construction: Faculty Publications
The cross-disciplinary nature of energy-efficient building design has created many challenges for architecture, engineering and construction instructors. One of the technical challenges in teaching sustainable building design is enabling students to quantitatively understand how different building designs affect a building’s energy performance. Concept based instructional methods fall short in evaluating the impact of different design choices on a buildings’ energy consumption. Building Information Modeling (BIM) with energy performance software provides a feasible tool to evaluate building design parameters. One notable advantage of this tool is its ability to couple 3D visualization of the structure with energy performance analysis without requiring …
Effects Of Roof Pitch On Air Flow And Heating Load Of Sealed
And Vented Attics For Gable-Roof Residential Buildings,
2012
University of Nebraska - Lincoln
Effects Of Roof Pitch On Air Flow And Heating Load Of Sealed And Vented Attics For Gable-Roof Residential Buildings, Shimin Wang, Zhigang Shen
Durham School of Architectural Engineering and Construction: Faculty Publications
Pitch value is an important consideration in residential gable roof design and construction. However, how roof pitch, coupled with air flows in attic space, affects the energy performance of building attics has been barely investigated. In this paper, a 2D unsteady computational fluid dynamics (CFD) model is employed to investigate the effects of roof pitch on air flow and heating load of both sealed and vented attics for gable-roof residential buildings. The simulation results show that air flow in the sealed attics is steady and asymmetric, while that in the vented attics is a combination of an essentially symmetric base …
Bs News January/February,
2012
Technological University Dublin
Effects Of Inclusion Shapes Within Rigid Porous Materials On Acoustic Performance,
2012
University of Nebraska-Lincoln
Effects Of Inclusion Shapes Within Rigid Porous Materials On Acoustic Performance, Hyun Hong, Siu-Kit Lau
Durham School of Architectural Engineering and Construction: Faculty Publications
The present study investigates the influence of various shapes of inclusions having same volume embedded in a porous rigid material. Previous studies showed improvement of the broadband sound absorption with particular shapes of inclusions. However, different volumes of the inclusions have been considered; therefore, the bulk densities are not the same for comparison. The present study extends the investigations of inclusions in porous materials with same volume (or bulk density) to eliminate the influence by the change of bulk density. The effects of shape will be discussed. Finite element modeling will be used for this study. Total four different shapes: …
Impacts Of Ventilation Ratio And Vent Balance On Cooling Load
And Air Flow Of Naturally Ventilated Attics,
2012
University of Nebraska - Lincoln
Impacts Of Ventilation Ratio And Vent Balance On Cooling Load And Air Flow Of Naturally Ventilated Attics, Shimin Wang, Zhigang Shen
Durham School of Architectural Engineering and Construction: Faculty Publications
The impacts of ventilation ratio and vent balance on cooling load and air flow of naturally ventilated attics are studied in this paper using an unsteady computational fluid dynamics (CFD) model. Buoyancy-driven turbulent ventilations in attics of gable-roof residential buildings are simulated for typical summer conditions. Ventilation ratios from 1/400 to 1/25 combined with both balanced and unbalanced vent configurations are investigated. The modeling results show that the air flows in the attics are steady and exhibit a general streamline pattern that is qualitatively insensitive to the variations in ventilation ratio and vent configuration. The predicted temperature fields are characterized …
The Impact Of Roof Pitch And Ceiling Insulation On Cooling
Load Of Naturally-Ventilated Attics,
2012
University of Nebraska - Lincoln
The Impact Of Roof Pitch And Ceiling Insulation On Cooling Load Of Naturally-Ventilated Attics, Shimin Wang, Zhigang Shen, Linxia Gu
Durham School of Architectural Engineering and Construction: Faculty Publications
A 2D unsteady computational fluid dynamics (CFD) model is employed to simulate buoyancy-driven turbulent ventilation in attics with different pitch values and ceiling insulation levels under summer conditions. The impacts of roof pitch and ceiling insulation on the cooling load of gable-roof residential buildings are investigated based on the simulation of turbulent air flow and natural convection heat transfer in attic spaces with roof pitches from 3/12 to 18/12 combined with ceiling insulation levels from R-1.2 to R-40. The modeling results show that the air flows in the attics are steady and exhibit a general streamline pattern that is qualitatively …
Development And Evaluation Of A Simplified
Modeling Approach For Hydraulic Systems,
2012
Carnegie Mellon University
Development And Evaluation Of A Simplified Modeling Approach For Hydraulic Systems, Yuebin Yu, Vivian Loftness, Daihong Yu, Yan Lu, Volker Hartkopf
Durham School of Architectural Engineering and Construction: Faculty Publications
This paper presents how a hydraulic system can be properly modeled for hydraulic balancing, knowledge of flow distribution, coupled simulation, and evaluation of control, etc. It focuses on water-based heating and cooling systems, which generally have high energy efficiency in design but could perform poorly in reality due to the undersensing condition and strong thermal-hydraulic coupling. The study introduces the motivation, presents the simplified modeling methodology, and illustrates the model and simulating structure. A preliminary evaluation of the method is conducted with two simple simulations. The proposed “node-branch-state” modeling approach could be easily modified, expanded and integrated into a detailed …
Life Cycle Costing Template (Excel),
2011
Technological University Dublin
Bs News November/December,
2011
Technological University Dublin
Bs News September/October,
2011
Technological University Dublin
Review Of Technological University Of Dublin's E-Learning Platform For Effective Teaching Fromative Assessment And Feedback,
2011
Technological University Dublin
Review Of Technological University Of Dublin's E-Learning Platform For Effective Teaching Fromative Assessment And Feedback, Dermot Kehily
Conference papers
This paper investigates Technological University of Dublin’s (DIT) ‘webcourses.dit.ie’ created for DIT with Blackboard Learning System software as an effective e-learning tool on a module in the School of Real Estate and Construction Economics in DIT. Webcourses.dit.ie is an e-learning platform providing support and assistance to both lecturers and students as part of their daily teaching and learning experience. Webcourses as it is known in DIT is both a course management system for lecturers and a computer assisted learning and assessment tool for students. Prior to using the system class content was delivered by presenting electronic slides in class and …
Encouraging Attendence In Tutorials For Quantity Surveying Studies Through Assessment,
2011
Technological University Dublin
Encouraging Attendence In Tutorials For Quantity Surveying Studies Through Assessment, Dermot Kehily
Conference papers
Construction Economics and Management in Technological University of Dublin (DIT) educates and prepares students to become Quantity Surveyors (Construction Economists) in the Construction Industry. Arguably the most important subject on the course and the cornerstone of the profession is the ability of the students and graduates to carry out a technical function called ‘measurement’ or ‘take off’ from construction plans and drawings. Graduates of Construction Economics and Management may spend up to two years carrying out measurement for their employers before they progress to the more professional practices of Quantity Surveying. The importance of measurement and take off inthe profession …
Bs News July/August,
2011
Technological University Dublin
How Much Do U.S. University Students Know, And Want To Know, About Sustainability And Green Building? The Findings Of A Survey, And Possible Implications For General Elective Curricula.,
2011
Distance Masters Student
How Much Do U.S. University Students Know, And Want To Know, About Sustainability And Green Building? The Findings Of A Survey, And Possible Implications For General Elective Curricula., Jeremy R. Farner
Purdue Polytechnic Masters Theses
Using the survey approach, this investigation examined the attitudes and interest of college students at two universities in different geographic locations within the United States. Approximately 24,000 students from all disciplines and majors at Weber State University (WSU) in Utah, and 4,000 at Purdue University in Indiana, were invited to participate in a study to determine current knowledge, familiarity, and interest in topics within the sustainability and Green Building educational arena. The goal of this study was to determine what students already know, would like to know, and how much interest there would be in developing …
Bs News May/June,
2011
Technological University Dublin
An Empirical Comparison Of Life Cycle Cost Of Green School Buildings And Non-Green School Buildings,
2011
University of Nevada, Las Vegas
An Empirical Comparison Of Life Cycle Cost Of Green School Buildings And Non-Green School Buildings, Nitisha Pushpala
UNLV Theses, Dissertations, Professional Papers, and Capstones
One of the major economic concerns today of the world is reduction of energy consumption because of depleting energy sources in the world. The construction sector in the United States is also contributing in reducing the energy consumption and construction cost of the buildings by constructing cost and energy efficient buildings with energy efficient materials and techniques. The U.S Department of Energy introduced the Building Technologies Program that develops techniques, tools and technologies for making buildings more energy efficient. Other private bodies like the Leadership in Energy and Environmental Design (LEED), which is developed by the U.S. Green Building Council …
How Much Do U.S. University Students Know, And Want To Know, About Sustainability And Green Building? The Findings Of A Survey, And Possible Implications For General Elective Curriculum.,
2011
Purdue University
How Much Do U.S. University Students Know, And Want To Know, About Sustainability And Green Building? The Findings Of A Survey, And Possible Implications For General Elective Curriculum., Jeremy R. Farner
Purdue Polytechnic Masters Theses
Using the survey approach, this investigation examined the attitudes and interest of college students at two universities in different geographic locations within the United States. Approximately 24,000 students from all disciplines and majors at Weber State University (WSU) in Utah, and 4,000 at Purdue University in Indiana, were invited to participate in a study to determine current knowledge, familiarity, and interest in topics within the sustainability and Green Building educational arena. The goal of this study was to determine what students already know, would like to know, and how much interest there would be in developing …
Ua3/9/2 Facility Analysis / Expansion Alternatives Wku Glasgow,
2011
Western Kentucky University
Ua3/9/2 Facility Analysis / Expansion Alternatives Wku Glasgow, Wku President's Office, Hafer Associates
WKU Administration Documents
Pages 2, 3, 17, 18 and 23 of a report by Hafer Associates regarding potential expansion of the WKU Glasgow campus.
Environmental Value Engineering Assessment Of Horizontal Directional Drilling And Open Cut,
2011
Bowling Green State University
Environmental Value Engineering Assessment Of Horizontal Directional Drilling And Open Cut, Lameck Onsarigo
Master of Technology Management Plan II Graduate Projects
There has been a growing concern over the rate of deterioration of wastewater collection and water distribution systems in the United States. The ever-growing need for rehabilitation and replacement of these systems has led to the birth of a research program by the United States Environmental Protection Agency focused on addressing the water infrastructure needs. This program-Innovation and Research for Water Infrastructure for the 21st Century-lays emphasis on research focused on system rehabilitation. There is a marked change in the way that the public view the environmental needs with ‘green’ becoming ‘the new gold’. Man has been blamed, and rightfully …
Stochastic Hybrid Embodied Co2-Eq Analysis: An Application To The Irish Apartment Building Sector,
2011
Technological University Dublin
Stochastic Hybrid Embodied Co2-Eq Analysis: An Application To The Irish Apartment Building Sector, Adolf Acquaye, Aidan Duffy, Biswajit Basu
Articles
Although embodiedCO2-eq analysis has seen recent developments as evident in the establishment of the ISO14040 and 14044 LCA standards, it is recognized that due to weaknesses in gathering data on product-related emissions,embodiedCO2-eq values are probabilistic. This paper presents a stochastic analysis of hybrid embodied CO2-eq in buildings to account for this weakness in traditional methods and, by way of example, applies it to an Irish construction-sector case study. Using seven apartment buildings, 70,000 results are simulated with Monte Carlo analysis and used to derive probabilistic and cumulative embodied CO2-eq intensity distributions for apartment buildings in Ireland. A Wakeby distribution with …
