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Buildings & Construction

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Displaying 76 - 100 of 7679

Evaluation of Indoor Environmental Concentrations in Buildings with Conditioned and Unconditioned Zones (IECCU) model for predicting TCPP concentrations in a low-energy test house

January 18, 2022
Author(s)
Dustin Poppendieck, Lisa Ng, Stephen Zimmerman
Globally over 100,000 different chemicals are manufactured every year (Levi et al. 2018). It is impossible to measure the fate of all of these chemicals in the wide range of indoor environments. The Indoor Environmental Concentrations in Buildings with

NIST Outdoor Structure Separation Experiments (NOSSE): Preliminary Test Plan

January 10, 2022
Author(s)
Alexander Maranghides, Shonali Nazare, Eric Link, Matthew Bundy, Artur A. Chernovsky, Erik L. Johnsson, Kathryn Butler, Steven Hawks, Frank Bigelow, William (Ruddy) Mell, Anthony Bova, Derek McNamara, Tom MIlac, Daniel Gorham, Faraz Hedayati, Bob Raymer, Frank Frievalt, William Walton
The Structure Separation Project is a multi-level project to assess structure-to-structure fire spread in Wildland-Urban Interface (WUI) communities. The project is divided into three phases with each phase assessing radiant and convective heat exposures

Low-GWP Alternative Refrigerant Blends for HFC-134a: Interim Report

October 13, 2021
Author(s)
Piotr A. Domanski, Mark O. McLinden, Valeri I. Babushok, Ian Bell, Tara Fortin, Michael Hegetschweiler, Mark A. Kedzierski, Dennis Kim, Lingnan Lin, Gregory T. Linteris, Stephanie L. Outcalt, Richard A. Perkins, Aaron Rowane, Harrison M. Skye
This project addresses the objectives of the Statement of Need number WPSON-17-20 "No/Low Global Warming Potential Alternatives to Ozone Depleting Refrigerants." Its goal is to identify and demonstrate performance of low global-warming-potential (GWP), non

A Continuum-Atomistic Simulation of Heat Transfer in Micro- and Nano-Flows

October 12, 2021
Author(s)
J Liu, S Chen, Xiaobo Nie, M O. Robbins
We develop a hybrid atomistic-continuum scheme for simulating micro- and nano- flows with heat transfer. The approach is based on spatial ''domain decomposition'' in which molecular dynamics (MD) is used in regions where atomistic details are important

A New Reactive Molecular Dynamics Model Of Polymer Pyrolysis

October 12, 2021
Author(s)
Stanislav Stoliarov, Kenneth D. Smith, P R. Westmoreland, Richard E. Lyon, Marc R. Nyden
In this paper, we report progress that has been made in the development of an extension of classical force-field-based molecular dynamics (MD) to the simulation of chemical reactions. We review several studies of polymer pyrolysis that were performed using

Computations of Particle Surface Characteristics Using Optical and X-Ray CT Images

October 12, 2021
Author(s)
E Masad, S Saadeh, T Al-Rousan, Edward Garboczi, D Little
The description of particle surface characteristics is of interest in many disciplines in science and engineering such as powder technology, geology, soil science, and infrastructure materials. Consequently, there is a need to develop methods to quantify

Consistent Estimation of Poisson Intensity in the Presence of Dead Time

October 12, 2021
Author(s)
S X. He, Grace L. Yang, K T. fang, J F. Widmann
Phase Doppler Interferometry (PDI) is a non-intrusive technique frequently used to obtain information about spray characteristics. Understanding spray characteristics is of critical importance in many areas of science, including liquid fuel spray

Detection of Smoke From Microgravity Fires

October 12, 2021
Author(s)
D L. Urban, DeVon Griffin, Gary Ruff, Thomas Cleary, Jiann C. Yang, George W. Mulholland, Zeng-guang Yuan
The history and current status of spacecraft smoke detection is discussed including a review of the state of understanding of the effect of gravity on the resultant smoke particle size. The results from a spacecraft experiment (Comparative Soot Diagnostics