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Search Publications by: Andrew K. Persily (Assoc)

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Displaying 151 - 175 of 205

Contribution of Gas and Electric Stoves to Residential Ultrafine Particle Concentrations between 2 nm and 64 nm: Size Distributions and Emission and Coagulation Rates

October 29, 2008
Author(s)
Lance L. Wallace, Wang Fang, Cynthia H. Reed, Andrew K. Persily
Three indoor sources of ultrafine particles (a gas stove, an electric stove, and an electric toaster oven) have been studied in an instrumented test house on the campus of the National Institute of Standards and Technology (NIST). Previous studies have

Reanalysis of BASE Ventilation Data

October 10, 2008
Author(s)
Andrew K. Persily
In 2004, the National Institute of Standards and Technology (NIST) published an analysis of the ventilation data collected as part of the U.S. EPA Building Assessment Survey and Evaluation (BASE) study [1]. That analysis provided a unique dataset of office

Building Air Change Rate Estimates for CBR Analysis

September 15, 2008
Author(s)
Andrew K. Persily
Building air change rates impact energy consumption for space conditioning and indoor contaminant levels in relation to general indoor air quality issues as well as occupant exposure to airborne chemical, biological and radiological (CBR) agents. With

Assessing the Uncertainty Associated with Product Emission Measurements

August 17, 2008
Author(s)
Cynthia H. Reed, Steven J. Nabinger, Andrew K. Persily
Volatile organic compounds (VOCs) emitted by building materials and products have been shown to significantly impact human health and comfort. As a result, the market for low emitting building materials and products is growing rapidly. However, existing

Development of a Design Guide to Improve Building IAQ

August 17, 2008
Author(s)
Andrew K. Persily, Martha Hewett, Jude Anders, Lynn Bellenger, Ronald Burton, John Girman, Eli HowardI, Eric Werling
Building owners and developers, and the designers and contractors they employ, are faced with a variety of requirements related to building function, regulations, and environmental impacts. These professionals often address indoor air quality through

Ventilation Measurements in Selected IAQ Studies

August 17, 2008
Author(s)
Andrew K. Persily
Building and space ventilation rates are primary determinants of indoor pollutant levels and occupant exposures, and the impacts of ventilation on health and comfort have long been recognized in ventilation standards and regulations. Despite the importance

A Collection of Homes to Represent the U.S. Housing Stock

August 1, 2008
Author(s)
Andrew K. Persily, Amy Musser, Dennis D. Leber
In order to allow nationwide analysis of ventilation and indoor air quality issues in residential buildings, a set of homes has been defined to represent the housing stock of the United States. This collection of dwellings is based on two residential

Airtightness and Ventilation in a Manufactured House: Pre-Retrofit Results

May 1, 2008
Author(s)
Steven J. Nabinger, Andrew K. Persily
A retrofit study is being conducted to investigate the airtightness, ventilation and energy impacts of tightening the exterior envelope and the heating and air conditioning system ductwork of a double section manufactured house. etc.

Improving the Reliability of VOC Emissions Testing of Building Products

October 1, 2007
Author(s)
Cynthia H. Reed, Andrew K. Persily, Steven J. Nabinger, John C. Little, Steven Cox
Manufacturers of building materials and furnishings are increasingly using emissions chamber testing to demonstrate low volatile organic compound (VOC) emissions from their products and to qualify for low-emitting certification and sustainable labeling

ASHRAE Standard 62.1: Problems, Perceptions and Panaceas?

March 1, 2007
Author(s)
Andrew K. Persily, Dennis Stanke, Gordon Holness, Richard Hermans
ASHRAE Standard 62 was first published in 1973, with the title Standards for Natural and Mechanical Ventilation [REF]. The most recent version (designated as 62.1 and titled Ventilation for Acceptable Indoor Air Quality) was published in 2004, with some

Building Retrofits for Increased Protection Against Airborne Chemical and Biological Releases

March 1, 2007
Author(s)
Andrew K. Persily, Robert E. Chapman, Steven J. Emmerich, William S. Dols, Heather Davis, Priya D. Lavappa, Amy S. Rushing
Due to concerns about potential airborne chemical and biological (chembio) releases in or near buildings, building owners and managers and other decision makers are considering retrofitting buildings to provide some degree of protection against such events

Airtightness of Commercial Buildings in the United States

September 21, 2005
Author(s)
Steven J. Emmerich, Andrew K. Persily
In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the myth of the airtight commercial building. This paper updates the earlier analysis for the U.S. by

Ventilation Rates in U.S. Office BuildingsFrom the EPA Base Study

September 1, 2005
Author(s)
Andrew K. Persily, J Gorfain, Greg Brunner
The EPA BASE study involved indoor environmental measurements in 100 U.S. office buildings. This paper presents an analysis of the measured outdoor air ventilation rates, including comparisons with the requirements in ASHRAE Standard 62. The outdoor

What We Think We Know About Ventilation

September 1, 2005
Author(s)
Andrew K. Persily
The amount of outdoor air provided to occupied spaces is one of the most important determinants of indoor air quality, but many critical questions and misunderstandings still exist regarding outdoor air ventilation. First, given the importance of

Ventilation Design and Performance in U.S. Office Buildings

April 30, 2005
Author(s)
Andrew K. Persily, J Gorfain
Building ventilation is a primary determinant of indoor air quality (IAQ) as it impacts contaminant concentrations and occupant comfort in terms of the perception of odor and irritation. However, relatively few measurements of office building ventilation

Analysis of Ventilation Data from the U.S. Environmental Protection Agency Building Assessment Survey and Evaluation (BASE) Study. (NIST IR 7145) [SUPERSEDED BY NIST IR 7145-R, Published 3/10/2009]

December 1, 2004
Author(s)
Andrew K. Persily, J Gorfain
The U.S. Environmental Protection Agency (EPA) Building Assessment Survey and Evaluation (BASE) study included a range of measurements in 100 randomly selected U.S. office buildings for the purpose of characterizing the existing building stock with respect

A Suite of Homes Representing the U.S. Housing Stock

December 1, 2003
Author(s)
Andrew K. Persily, Dennis D. Leber
In order to facilitate nationwide analysis of ventilation and indoor air quality issues in residential buildings, a set of homes has been defined to represent the housing stock of the United States. This so-called suite of homes is based on two residential