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Articles 1 - 14 of 14
Full-Text Articles in Engineering
Green Scheduling For Radiant Systems In Buildings, Truong X. Nghiem, Madhur Behl, George J. Pappas, Rahul Mangharam
Green Scheduling For Radiant Systems In Buildings, Truong X. Nghiem, Madhur Behl, George J. Pappas, Rahul Mangharam
Madhur Behl
In this report we look at the problem of peak power reduction for buildings with electric radiant floor heating systems. Uncoordinated operation of a multi-zone radiant floor heating system can result in temporally correlated electricity demand surges or peaks in the building’s electricity consumption. As peak power prices are 200-400 times that of the nominal rate, this uncoordinated activity can result in high electricity costs and expensive system operation. We have previously presented green scheduling as an approach for reducing the aggregate peak power consumption in buildings while ensuring that indoor thermal comfort is always maintained. This report extends the …
Green Scheduling For Radiant Systems In Buildings, Truong Nghiem, Madhur Behl, George Pappas, Rahul Mangharam
Green Scheduling For Radiant Systems In Buildings, Truong Nghiem, Madhur Behl, George Pappas, Rahul Mangharam
Rahul Mangharam
In this report we look at the problem of peak power reduction for buildings with electric radiant floor heating systems. Uncoordinated operation of a multi-zone radiant floor heating system can result in temporally correlated electricity demand surges or peaks in the building’s electricity consumption. As peak power prices are 200-400 times that of the nominal rate, this uncoordinated activity can result in high electricity costs and expensive system operation. We have previously presented green scheduling as an approach for reducing the aggregate peak power consumption in buildings while ensuring that indoor thermal comfort is always maintained. This report extends the …
Performance Comparison Between An Mrf Damper And An Mre Isolator Incorporated With A Building Structure, Yang Zhou, Weihua Li, Muhammad N. S Hadi
Performance Comparison Between An Mrf Damper And An Mre Isolator Incorporated With A Building Structure, Yang Zhou, Weihua Li, Muhammad N. S Hadi
Professor Weihua Li
As an important member of smart materials, magnetorheological elastomers (MREs) exhibit characteristics that their modulus can be controlled by an external magnetic field. Based on these experimental results, a viscoelastic solid model with four parameters was proposed to predict the performance of MRE. A building model, three stories high, was constructed using MATLAB SIMULINK to evaluate the performance of an MRE device in structural control. In addition, the performance of an MRF damper and an MRE device in structural control, where the resultant peak force was selected as a criterion in the evaluation process, was compared and discussed. Two controllers, …
Technology Portal For Energy Efficient Buildings, Larry D. Hermanson, Daniel Studer, Annie Mroz
Technology Portal For Energy Efficient Buildings, Larry D. Hermanson, Daniel Studer, Annie Mroz
STAR Program Research Presentations
Project: Technology Portal for Energy Efficient Buildings
Date: August 2, 2012
Author: Larry Hermanson
Mentor: Daniel Studer
Cohort: Annie Mroz
Lab site: National Renewable Energy Laboratory (NREL)
Buildings account for 71% of the electricity demand and 39% of the primary energy consumption in the United States. The Commercial Buildings Group at NREL provides builders, designers and building owners accurate information to significantly improve the energy efficiency of new and existing buildings. The Technology Portal for Energy Efficient Buildings will increase the accessibility of standardized and credible energy performance data for all building systems, thereby allowing building owners to better evaluate …
A New Building Scheme To Resist Progressive Collapse, Muhammad N. S Hadi, Thaer M. Saeed Alrudaini
A New Building Scheme To Resist Progressive Collapse, Muhammad N. S Hadi, Thaer M. Saeed Alrudaini
Faculty of Engineering - Papers (Archive)
In this paper, a new scheme is proposed for retrofitting RC buildings to resist progressive collapse that may result from a first floor column failure. The proposed scheme is comprised of placing vertical cables connected at the ends of beams and hung on a hat steel braced frame seated on top of the building. In case of a column collapse, the cables transfer the residual loads above the failed column to the hatbraced frame, which, in turn, redistributes these loads to the adjacent columns. A finite-element modeling and a nonlinear dynamic analysis following the alternate path method (APM), as recommended …
Super Flex Wall - New Frame System For High Rise Buildings, Purdue Ect Team
Super Flex Wall - New Frame System For High Rise Buildings, Purdue Ect Team
ECT Fact Sheets
The "Super Flex Wall" is a structural frame method newly developed by the Takenaka Corporation, used in combination with a core wall (the earthquake-resistant reinforced concrete wall penetrating through the center of the building from the lower part to the top floor) and a structural control method or with a base-isolation method. Part of the structure is cantilevered from the central core along the periphery of the building.
Optimisation Of Cold-Formed Steel Purlin Cross-Sections, Matt Clifford
Optimisation Of Cold-Formed Steel Purlin Cross-Sections, Matt Clifford
Theses
The subject of buckling of steel members is introduced and the critical nature of local buckling in slender members is highlighted.
The main thrust of work this semester is an investigation into the following buckling modes:
Flexural buckling;
Lateral torsional buckling;
Torsional buckling;
Shear buckling;
Web buckling;
Distortional buckling;
Local buckling.
This investigation has three main components:
1. Review of theory, books and appropriate published work;
2. Investigation into the relevant parts of Eurocode 3;
3. Finite element analysis using the LUSAS FE program to illustrate the various buckling modes.
Finally, the areas to be covered in the Realisation Stage …
Experimental Investigation Of Cable Catcher Systems For Office Building Blast Protection, Alexander Remennikov, L S. Brodie
Experimental Investigation Of Cable Catcher Systems For Office Building Blast Protection, Alexander Remennikov, L S. Brodie
Faculty of Engineering and Information Sciences - Papers: Part A
High performance cable catcher systems are an effective means of protecting office building windows and façades from effects of explosive blast. This paper presents experimental results for the response a simple cable catcher system subject to impact loads delivered using a drop-hammer testing facility. The objectives of this experimental programme were to investigate the loaddeformation behaviour of steel strand cables and to evaluate the dynamic performance of cable catcher systems in reference to their ability to absorb blast energy. Two steel cable arrangements (compacted and normal spiral strand) have been tensile tested in order to provide load-deformation curves as well …