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Search Publications by: Andrew K. Persily (Assoc)

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Displaying 76 - 100 of 205

Characterization of Airborne Nanoparticle Released from Consumer Products

December 1, 2014
Author(s)
Andrew K. Persily, Liang Chung J. Lo, Steven J. Nabinger, Dustin Poppendieck, Li Piin Sung
Polymer and other coatings are commonly used to protect, enhance, or decorate wood, plastic and metal products used in homes and other buildings. Nanoparticles (i.e., particles having at least one dimension smaller than 100 nm) are increasingly being added

Carbon Monoxide Exposure from Portable Generators

October 28, 2014
Author(s)
Steven J. Emmerich, Andrew K. Persily, Liangzhu Wang
Serious concerns exist about the hazard of acute residential carbon monoxide (CO) exposures from portable gasoline-powered generators, which can result in death or serious adverse health effects. As of April 23, 2013 and as shown in Figure 1, the U.S

Effect of Ozonation on Fungal Resistance of Bamboo and Oak

August 15, 2014
Author(s)
Chi Hoang, Tinh Nguyen, Deborah Jacobs, Andrew K. Persily, Richard Cosi
Wood is gaining increased interest as a renewable building material. However, color changes, chemical and microbiological degradation can occur when lignocellulosic materials are exposed to environmental stressors such as ozone and elevated humidity. In

Infiltration in energy modeling: a simple equation made better

August 8, 2014
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich
As building envelope performance and HVAC equipment efficiencies continue to be improved to reduce building energy use, a greater percentage of the total energy loss of a building can occur through envelope leakage. Although the energy impacts of

Long Term Air Quality Monitoring in a Net-Zero Energy Residential Test Facility Designed with Specifications for Low Emitting Interior Products

August 6, 2014
Author(s)
Dustin G. Poppendieck, Lisa C. Ng, Matthew P. Schlegel, Andrew K. Persily, Alfred Hodgson
This study evaluated the effectiveness of a low-VOC (volatile organic compounds) specification designed to minimize occupant exposures to indoor air pollutants in a net-zero energy research house meeting the ASHRAE Standard 62.2 ventilation requirements

Long Term Emissions from Spray Polyurethane Foam Insulation

August 6, 2014
Author(s)
Dustin G. Poppendieck, Steven J. Nabinger, Matthew P. Schlegel, Andrew K. Persily
The desire to build more energy efficient homes in the United States has lead to the expansion of the residential spray polyurethane foam (SPF) insulation industry. Annually, over 100,000 homes in the United States are constructed or retrofit using SPF

Simulation Study of Carbon Monoxide Exposure from Portable Generators in U.S. Residences

August 6, 2014
Author(s)
Andrew K. Persily, Steven J. Emmerich, Yanling Wang, Brian J. Polidoro
A simulation study was conducted to evaluate indoor CO exposures as a function of portable generator location and CO emission rate in order to support the development of potential CO emission limits for generators. These simulations employed the multizone

Characterization of Emissions from Spray Polyurethane Foam: Letter Report to U.S. Consumer Product Safety Commission Interagency Agreement CPSC-I-13-0016

May 15, 2014
Author(s)
Dustin G. Poppendieck, Matthew P. Schlegel, Andrew K. Persily, Steven J. Nabinger
This letter report provides a project update reflecting the activities to date under the FY2013 interagency agreement between CPSC and NIST. The objective of that agreement is to develop testing and measurement protocols for determining the quantities and

IAQ Specifications for a Netzero Energy Research Home

May 1, 2014
Author(s)
Andrew K. Persily, Lisa C. Ng
The National Institute of Standards and Technology (NIST) recently constructed the Net Zero Energy Research Test Facility (NZERTF) to demonstrate a range of technologies in support of achieving netzero or near zero residential buildings (1). The energy

An improved method of modeling infiltration in commercial building energy models

April 28, 2014
Author(s)
Lisa C. Ng, Steven J. Emmerich, Andrew K. Persily
As various strategies for improving building envelope and HVAC equipment efficiencies are increasingly used to reduce building energy use, a greater percentage of energy loss can occur through building envelope leakage. Although the energy impacts of

The IAQ and Energy Impacts of Reducing Formaldehyde Emissions in Commercial Building

February 11, 2014
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich, Kevin Y. Teichman
Heating, ventilating, and air conditioning (HVAC) systems in buildings are designed to provide thermally comfortable conditions and to maintain acceptable indoor air quality (IAQ). At the same time, the operating costs of HVAC systems are often a large