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Search Publications by: Andrew K. Persily (Assoc)

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Displaying 176 - 200 of 205

Ventilation Characterization of a New Manufactured House

December 1, 2003
Author(s)
Andrew K. Persily, J Crum, Steven J. Nabinger, M Lubliner
A new, double-wide manufactured home has been installed on the NIST campus for ventilation, energy and indoor air quality studies. The primary purposes of the facility are to study the mechanical ventilation requirements for manufactured homes in the U.S

Impact of Natural Ventilation Strategies and Design Issues for California Applications, Including Input to ASHRAE Standard 62 and California Title 24-Report on Task 4.4.3a and 4.4.3b of CEC-EEB RMT Project

October 1, 2003
Author(s)
Steven J. Emmerich, Andrew K. Persily, William S. Dols, James W. Axley
Natural ventilation has the potential to reduce the energy required for cooling and ventilating commercial buildings while still providing acceptable thermal comfort and indoor air quality. While a recent surge of interest in Europe has advanced natural

Recommendations for Application of CO 2 -Based Demand Controlled Ventilation Including Proposed Guidance for ASHRAE Standard 62 and California's Title 24

September 29, 2003
Author(s)
Andrew K. Persily, Jim Braun, Steven J. Emmerich, Kevin Mercer, Tom Lawerence
Carbon dioxide (CO2) based demand controlled ventilation (DCV) has been proposed and implemented for many years as a strategy for increasing energy efficiency by providing outdoor air ventilation rates based on actual occupancy rather than design occupancy

A Priority Agenda for Energy-Related Indoor Environmental Quality Research

July 1, 2002
Author(s)
W J. Fisk, G Brager, M Brook, H Burge, J Cole, J Cummings, H Levin, V Loftness, T Logee, M J. Mendell, Andrew K. Persily, S Taylor, J Zhang
A multidisciplinary team of IEQ and energy researchers is working together to define a program of priority energy-related IEQ research. This paper describes the methods employed, ten high priority broad research and development (R&D) goals, and 34 high

Modeling Moisture in Residential Buildings with a Multizone IAQ Program

July 1, 2002
Author(s)
Steven J. Emmerich, Andrew K. Persily, Steven J. Nabinger
Multizone airflow and contaminant transport modeling is a valuable tool for researchers and others studying indoor air quality (IAQ) problems in buildings. Although water vapor is not typically thought of as an indoor contaminant, multizone IAQ modeling

Multizone Modeling Approaches to Contaminant-Based Design

June 1, 2002
Author(s)
A L. Musser, Andrew K. Persily
Indoor air quality is currently addressed in the design process primarily through prescriptive building codes based on specified flow rates. However, a contaminant-based design approach opens the door to design innovation, offering opportunities for

The Revision of Standard 62: What a Difference a Decade Makes

June 1, 2002
Author(s)
Andrew K. Persily
The American Society of heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has been revising Standard 62,Ventilation for Acceptable Indoor Air Quality since 1991. The two primary motivations for this revision have been 1) to convert the

Airflow and Aerosol Transport Modeling in Hart Senate Office Building

May 23, 2002
Author(s)
Steven J. Emmerich, Cynthia H. Reed, Andrew K. Persily
A modeling study of airflow and contaminant transport in the Hart Senate Office Building (HSOB) was performed to obtain insight into the transport of anthrax spores within the building after a short-term release in October 2001. This analysis employed an

Prototype Software for Contaminant-Based Design

January 2, 2002
Author(s)
George Walton, Andrew K. Persily
Outdoor air intake rates of mechanical ventilation systems have traditionally been determined using prescriptive methods based on ventilation requirements per unit floor area or per occupant. This approach has serious shortcomings. It provides no

Input Data for Multizone Airflow and IAQ Analysis

January 1, 2001
Author(s)
Andrew K. Persily, E M. Ivy
The use of multizone airflow and contaminant dispersal models requires a range of data. In terms of airflow analysis, these data include leakage characteristics of airflow elements, wind pressure coefficients, ventilation system characteristics such as

Status of the Revision of ASHRAE Standard 62

August 1, 2000
Author(s)
Andrew K. Persily
The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) is in the process of revising Standard 62 Ventilation for Acceptable Indoor Air Quality. Because Standard 62 has been designated as a high profile standard by ASHRAE

Ventilation Strategies for U.S. Manufactured Homes

August 1, 2000
Author(s)
S R. Martin, Andrew K. Persily
The HUD Manufactured Home Construction and Safety Standards contain requirements intended to provide adequate levels of outdoor air ventilation in U.S. manufactured homes. In the implementation of these standards, questions have arisen regarding the impact

Modeling Study of Ventilation in Manufactured Houses

February 1, 2000
Author(s)
Andrew K. Persily, S R. Martin
The HUD Manufactured Home Construction and Safety Standards (Part 3280, 1994) contain a number of requirements intended to provide adequate levels of outdoor air to the occupants of manufactured homes. In the implementation of these standards, some

Myths About Building Envelopes

March 1, 1999
Author(s)
Andrew K. Persily
It is often assumed that commercial and institutional buildings are fairly airtight and that envelopee air leakage does not have a significant impact on energy consumption and indoor air quality in these buildings. Furthermore, it is assumed that more

Multizone Modeling of Three Residential Indoor Air Quality Control Options

March 1, 1996
Author(s)
Steven J. Emmerich, Andrew K. Persily
The National Institute of Standards and Technology (NIST) performed a preliminary study of the use of central forced-air heating and cooling system modifications to control indoor air quality (IAQ) in residential buildings. The objective of this effort was