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Dustin G. Poppendieck, Mengyan Gong, Steven J. Emmerich
Spray polyurethane foam (SPF) insulation increases building energy efficiency by reducing conductive and convective heat losses through the building envelope and is used in both new construction and retrofit applications. Health complaints relating to
Steve Gwynne, Erica D. Kuligowski, Michael Kinsey, Lynn Hulse
The purpose of this article is to present a conceptual model of human behaviour in fire and its impact on evacuation modelling, life safety analyses, and evacuation procedures. This model is based on a theoretical framework of individual decision-making
Zhelun Chen, Jin Wen, Anthony Kearsley, Amanda Pertzborn
A robust and efficient nonlinear algebraic and differential equations solver is increasingly essential as the scale of dynamic building system simulation grows larger and the models employed become more complex. There are many factors affecting the
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby
Automated commissioning tools facilitate an ongoing commissioning process to improve occupant comfort, ensure the persistence of correct system operation, and reduce energy consumption. These tools decrease the time and the skill level required to carry
Steve Gwynne, Erica D. Kuligowski, Karen E. Boyce, Daniel Nilsson, Amanda Robbins, Ruggiero Lovreglio, J.R. Thomas, A. Roy-Poirier
This article explores how egress drills - specifically those related to fire incidents - are currently employed, their impact on safety levels, and the insights gained from them. It is suggested that neither the merits of egress drills are well understood
An analytical study is carried out to assess the impact of corrections to nominal test conditions on the measured energy factor for residential water heaters. While test conditions are specfiied in the method of test, the difficuly in exactly achieiving
Valeri I. Babushok, Gregory T. Linteris, Pol Hoorelbeke
A kinetic model of inhibition by the potassium containing compound potassium bicarbonate is suggested. The model is based on the previous work concerning kinetic studies of suppression of secondary flashes, inhibition by alkali metals and the studies of
There is concern about the hazard of acute residential CO exposures from portable gasoline powered generators that can result in death or serious adverse health effects in exposed individuals. The U.S. Consumer Product Safety Commission subsequently
Riccardo Brignoli, J S. Brown, Harrison Skye, Piotr A. Domanski
The prevalent practice for preliminary refrigerant screening relies on using cycle simulation models involving thermodynamic properties alone. This approach has two shortcomings. First, it neglects transport properties, whose influence on system
James White, Sebastien Vilfayeau, Andre Marshall, Arnaud Trouve, Randall McDermott
This work seeks to support the validation of large eddy simulation (LES) models used to simulate the response of fires to the activation of a suppression system. The emphasis in the present study is on the prediction of flame weakening and extinction when
Numerical simulation of bubble growth during pool boiling under the influence of low frequency vibration was done to understand the influence of common vibrations such as those induced by wind, highway transportation, and nearby mechanical devices on the
Jian Jiang, Joseph A. Main, Fahim Sadek, Jonathan M. Weigand
This report presents detailed and reduced-order finite element modeling of heat transfer in composite floor slabs with profiled steel decking. The detailed modeling approach uses solid elements for the concrete slab and shell elements for the steel decking
Kathryn Butler, Erica D. Kuligowski, Susanne M. Furman, Richard Peacock
Since the tragic loss of life in the World Trade Center disaster, efforts have refocused on the provision of safe and efficient evacuation procedures, especially for occupants who cannot negotiate exit stairs without assistance. Several evacuation options
Piotr A. Domanski, Riccardo Brignoli, J S. Brown, Andrei F. Kazakov, Mark O. McLinden
The merits of an alternative refrigerant are established based on many attributes including environmental acceptance, chemical stability in the refrigeration system, low toxicity, flammability, efficiency and volumetric capacity. In an earlier work, these
Hidemi Omori, Erica D. Kuligowski, Steve Gwynne, Kathryn Butler
The purpose of this article is to provide guidance on enhancing human response to emergency communication. This guidance can, in turn, help engineers improve the design of emergency notification and messaging systems, which, as a result, can help inform
Steven Emmerich, Kevin Y. Teichman, Andrew Persily
In this paper, we summarize the results of field studies to evaluate the ventilation and indoor air quality (IAQ) performance in high-performance commercial (non-industrial, non-residential) buildings in North America. We show that the number of such
According to recent results of Planetary Boundary Layer research relevant to tall building design, for elevations of up to at least 1 km: (i) the longitudinal mean wind speeds are monotonically increasing with height, and (ii) veering angles are negligible
The IFC File Analyzer software generates a spreadsheet or CSV files from an IFC file. IFC (Industry Foundation Classes) is the data exchange standard used to facilitate interoperability in the building and construction industry. IFC is developed by
Three grid-connected monocrystalline silicon photovoltaic arrays have been instrumented with research-grade sensors on the Gaithersburg, Maryland campus of the National Institute of Standards and Technology (NIST). These arrays range from 73 kW to 271 kW
The CYCLE_D package simulates vapor compression refrigeration cycles that use pure refrigerants or blends of refrigerants. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat
Kevin Teichman, Steven Emmerich, Andrew K. Persily
Despite numerous efforts to encourage good indoor air quality (IAQ) in high-performing buildings, including several building rating programs, measured IAQ performance data in high- performing buildings are limited. This presentation summarizes data that
The 4SIGHT computer code facilitates the performance assessments (PA) of nuclear waste and decommissioning facilities that employ concrete as the principal engineered barrier to isolate waste. Such facilities include those for Low Level Waste (LLW)