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Buildings & Construction

Indoor air quality

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Displaying 201 - 225 of 431

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

IAQ 2013 Tools Topic Overview

February 20, 2014
Author(s)
Steven J. Emmerich, Larry Schoen
The complex relationships between indoor and outdoor environmental conditions, coupled with the impacts of climate change, make it more important than ever before that buildings be comfortable and healthy for the occupants yet also energy efficient. This

Environmental Health in Low Energy Buildings Topic Overview

February 11, 2014
Author(s)
Steven J. Emmerich, Hal Levin
Besides providing thermal comfort and acceptable indoor environmental quality (IEQ), the designers of buildings and other enclosed spaces are increasingly challenged to provide a healthy environment in an energy efficient manner. Increasing pressure to

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

Chapter 3 Evaluation of Atmospheric Loss Processes

December 31, 2013
Author(s)
Vladimir L. Orkin, James B. Burkholder, Wahid Mellouki, Eric L. Fleming, Christian George, Charles H. Jackman, Timothy J. Wallington , Michael J. Kurylo , Dwayne E. Heard, William H. Swartz
Hydroxyl radical (OH), electronically excited atomic oxygen (O(1D)), and atomic chlorine (Cl) reaction rate coefficient data were evaluated and the estimated uncertainties in the recommended parameters reduced, in general, from those currently recommended

Application of a Natural Ventilation System Design Tool To A School Building

November 8, 2013
Author(s)
Steven J. Emmerich, William S. Dols, Brian J. Polidoro
A software tool to aid in the design of natural ventilation systems has recently been udpated. This update implements a general method for sizing of natural ventilation components, which allows direct consideration of stack and wind-driven airflow. The

Dissecting Interactions Among Indoor Environmental Quality Factors

November 8, 2013
Author(s)
Hal Levin, Steven Emmerich
Many aspects of indoor environmental quality (IEQ) and the technologies that control or otherwise affect it are interactive and often closely connected. This has important implications for the design and construction of buildings as well as for operation
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