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Khiem Nguyen, Hyojin Kim, Lisa Ng, William V. Payne
This study aims to evaluate the performance of a Small Duct High Velocity (SDHV) heat pump by comparing it with the Conventionally-Ducted Heat Pump (CDHP) using one-year of detailed data from the two-story Net-Zero Energy Residential Test Facility (NZERTF)
As I complete my fifth and final year as chair of SSPC 189.1, Design of High-Performance Green Buildings, indulge me while I reflect on how this standard and other green building programs have dealt with indoor environmental quality. I have spent my 35+
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
Formaldehyde reference materials are being developed by the National Institute of Standards and Technology (NIST) for use in regulatory emission testing certification programs. Emission rates for a prototype formaldehyde reference material were determined
Formaldehyde is listed as a human carcinogen, and can be formed as a primary by-product during combustion processes. Past studies have not detected elevated formaldehyde concentrations from gas stoves, perhaps due to the time averaging nature of previous
Andrew K. Persily, Lisa C. Ng, Dustin G. Poppendieck, Steven J. Emmerich
The Net Zero Energy Residential Test Facility (NZERTF) was constructed at the National Institute of Standards and Technology (NIST) to support the development and adoption of cost-effective net zero energy designs and technologies. The 250 m2 two-story
Solid-phase microextraction (SPME) has been widely used as a sampling technique for a variety of organic compounds due to its advantage of small sampling volume, ease of sampling, and simple injection (Ouyang and Pawliszyn 2008). Recently, Cao et al. (2016
The most often used method to calibrate solid-phase microextraction (SPME) for measuring gas phase semi-volatile organic compound (SVOC) concentrations, i.e. splitless liquid injection, may cause large measurement uncertainty. This study aims to improve
Lisa C. Ng, Dustin G. Poppendieck, William S. Dols, Brian P. Dougherty, Steven J. Emmerich
Buildings used 39 % of all energy used in the United States in 2017, with residential buildings and commercial buildings accounting for 20 % and 19% (EIA 2018) respectively. Zero energy buildings have the potential to help extend and accelerate the recent
Ali Katal, Liangzhu Wang, William Stuart Dols, Brian Polidoro
Natural ventilation (NV) is a method of allowing fresh outdoor air into indoor living spaces by natural means without the use of air conditioning units and other types of mechanically driven devices. Therefore NV of buildings is a cooling strategy that
Lisa C. Ng, Dustin G. Poppendieck, William S. Dols, Steven J. Emmerich
The National Institute of Standards and Technology constructed the Net-Zero Energy (NZE) Residential Test Facility to support the development and adoption of cost-effective NZE designs and technologies. Source control approaches were implemented that
Lisa C. Ng, Nelson Ojeda-Quiles, William S. Dols, Steven J. Emmerich
As building envelope performance and heating, ventilating and air-conditioning (HVAC) equipment efficiencies are improved to reduce building energy use, a greater percentage of the total energy loss can occur through building envelope leakage. Although the
NIST conducted a series of tests to characterize the indoor CO concentrations resulting from portable generators operating in the attached garage of a house under various use and environmental conditions. An extensive model validation effort using the
Dustin G. Poppendieck, Mengyan Gong, Steven J. Emmerich
Spray polyurethane foam (SPF) insulation increases building energy efficiency by reducing conductive and convective heat losses through the building envelope and is used in both new construction and retrofit applications. Health complaints relating to
The development and use of low-volatile organic compounds (VOCs) building materials and products is a key strategy to reduce ventilation and energy use in buildings while preserving the health and sustainability of the indoor environment. Labelling and
Semi-volatile organic compounds (SVOC) are ubiquitous indoors, commonly used in consumer products as additives to enhance product performance, and may be up to tens-of-percent of product content by mass (Wu, Xie et al. 2016). Human may be exposed to SVOCs
Vladimir L. Orkin, Larissa E. Martynova, Michael J. Kurylo III
Abstract Rate constants for the reactions of hydroxyl radicals (OH) with methyl 2,2,2-trifluoroethyl-1-trifluoromethyl ether (CH3-O-CH-(CF3)2 and 4-bromo-3-chloro-3,4,4-trifluoro-1-butene (CH2=CH-CFCl-CF2Br) have been measured over the temperature range
There is concern about the hazard of acute residential CO exposures from portable gasoline powered generators that can result in death or serious adverse health effects in exposed individuals. The U.S. Consumer Product Safety Commission subsequently
Steven Emmerich, Kevin Y. Teichman, Andrew Persily
In this paper, we summarize the results of field studies to evaluate the ventilation and indoor air quality (IAQ) performance in high-performance commercial (non-industrial, non-residential) buildings in North America. We show that the number of such