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Displaying 151 - 175 of 3882

Estimating real-time infiltration for use in residential ventilation control

September 19, 2019
Author(s)
Lisa C. Ng, Stephen M. Zimmerman, Jeremy Good, Brian Toll, Steven J. Emmerich, Andrew K. Persily
Minimum outdoor air ventilation rates specified in standards such as ASHRAE Standard 62.2 are generally based on envelope airtightness, building floor area, geographical location, and number of occupants. ASHRAE Standard 62.2 allows for a constant

Blown away: Citicorp Center Tower repairs revisited

July 1, 2019
Author(s)
Dat Duthinh
Using Database-Assisted Design and the Tokyo Polytechnic University Aerodynamic Database, we show that face winds put more structural demand than corner winds do on the Citicorp Tower in Manhattan. This 59-story building, supported by four midside columns

Estimating real-time infiltration for use in residential ventilation control

June 18, 2019
Author(s)
Lisa Ng, Stephen M. Zimmerman, Jeremy Good, Brian Tool, Steven Emmerich, Andrew Persily
Minimum outdoor air ventilation rates specified in standards such as ASHRAE Standard 62.2 are generally based on envelope airtightness, building floor area, geographical location, and number of occupants. To meet ventilation requirements in practice

Retro-Commissioning a Performing Arts Center using HVAC-Cx

February 21, 2019
Author(s)
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby, Robert Leader, J. M. Whitcomb, David W. Rush
This paper presents the use of a semi-automated commissioning tool for the energy retro-commissioning of the Performing Arts Center at Montgomery College in Rockville, Maryland. Researchers and field practitioners collaborated to implement the HVAC-Cx

Function VoronoiBound

November 30, 2018
Author(s)
Dat Duthinh, Brian M. Phillips
Matlab Function VoronoiBound calculates a Voronoi diagram with inner and outer bounds. This function is useful in defining tributary areas of pressure taps regularly or irregularly placed on the outside surface of a wind tunnel model.

CYCLE_D: NIST Vapor Compression Cycle Design Program, Version 6.0; User's Guide

November 19, 2018
Author(s)
Piotr A. Domanski, J S. Brown, Eric W. Lemmon
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

Service Life Prediction Models to Predict Building Skin Failures

October 1, 2018
Author(s)
Christopher C. White, Donald L. Hunston, Adam L. Pintar
Determination of the in-service performance and failure of a building envelope material exposed to outdoor weathering has been a significant research goal for the last 100 years. Typically, estimations of the time to failure or durability of a material is

Fundamentals and characterizations of scratch resistance on automotive clearcoats

September 11, 2018
Author(s)
Li Piin Sung, Linqian Feng, Nadia Benhamida, Pierre Morel, Andrew T. Detwiler, Jon M. Skelly, Leslie T. Baker, Deepanjan Bhattacharya
As original equipment manufacturers (OEMs) strive to deliver improved coating performance with a sustainable footprint, opportunities for innovation are emerging, particularly on improving mechanical properties, appearance, and solids content. Resistance

Influence of wind tunnel test duration on wind load factors

August 17, 2018
Author(s)
Dat Duthinh, Adam L. Pintar, Emil Simiu
A methodology is presented for calculating the uncertainty associated with the estimation of peak pressure coefficients from wind tunnel test records of various lengths, and how this uncertainty affects design wind effects. Investigation of time series

Development of Airborne Nanoparticle Exposure Modeling Tools

July 27, 2018
Author(s)
William S. Dols, Andrew K. Persily, Brian J. Polidoro
Engineered nanoparticles (ENP) are being used in many applications including consumer products. There are many different means by which ENPs may be incorporated into these products (freely- dispersed, embedded, reactive or passive) which can impact the
Displaying 151 - 175 of 3882
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