NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Buildings & Construction

Energy efficiency

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
  • Published Date
Displaying 51 - 75 of 297

Laboratory Tests of a Prototype Carbon Dioxide Ground-Source Air Conditioner

April 12, 2021
Author(s)
Harrison M. Skye, Wei Wu
Environmental concerns are driving regulations to reduce the use of hydrofluorocarbons (HFCs) with high global warming potential (GWP) as refrigerants in heat pumps. CO2 is an attractive alternative refrigerant because is it 'environmentally friendly' in

How Residential Water Heating is Changing

March 1, 2021
Author(s)
William M. Healy, Carl Hiller, James Lutz
Water heating system energy use is typically the second largest in U.S. residences behind space conditioning (space heating and cooling). Recent advances are changing the way water heating service is provided. This article describes hot water demand in

Integrative Method to Whole-House Energy and Comfort Rating

December 4, 2020
Author(s)
Hyojin Kim, Han Yan, Anuradha Kadam
The purpose of this research is to investigate how thermal comfort dynamics are impacted by energy-efficient or thermal comfort improvements in a low-load house and to explore methods or metrics to rate a whole-house performance in an integrative way based

Low global-warming-potential refrigerant CH2F2 (R-32): Integration of a radiation heat loss correction method to accurately determine experimental flame speed metrics

August 22, 2020
Author(s)
Gregory Linteris, Raik Hesse, Lukas Berger, Michael Hegetschweiler, Heinz Pitsch, Joachim Beeckmann
Due to their high global warming potential (GWP), hydrofluorocarbon refrigerants (HFCs) are systematically being phased out. Replacements with low GWP exist, but give rise to safety hazards as they are found to be mildly flammable. The assessment of the

High-brightness lasing at submicrometer enabled by droop-free fin light-emitting diodes (LEDs)

August 14, 2020
Author(s)
Robin P. Hansen, Amit K. Agrawal, Michael Shur, Jerry Tersoff, Babak Nikoobakht, Yuqin Zong
"Efficiency droop," i.e., a decline in brightness of light-emitting diodes (LEDs) at high electrical currents, limits the performance of all commercial LEDs and has limited the output power of submicrometer LEDs and lasers to nanowatts. We present a fin p

CONTAM User Guide and Program Documentation Version 3.4

August 3, 2020
Author(s)
William Stuart Dols, Brian Polidoro
This manual describes the computer program CONTAM version 3.4, developed by NIST. CONTAM is a multizone indoor air quality and ventilation analysis program designed to help determine airflows, contaminant concentrations, and occupant exposure in buildings

Technology Development and Field Monitoring in nZEB

July 1, 2020
Author(s)
Vance (Wm.) Payne, Brian P. Dougherty
The International Energy Agency (IEA) Heat Pumping Technologies (HPT) Annex 49, "Design and Integration of Heat Pumps for Nearly Zero Energy Buildings," deals with the application of heat pumps as a core component of the HVAC system for nearly or net-zero

Flammable Refrigerant Safety

April 22, 2020
Author(s)
Gregory Linteris, Peter Sunderland
Most refrigerants currently in use have relatively high Global Warming Potential (GWP). For example, the GWPs of R-134a and R-410a are 1300 and 2088. Leaks to the atmosphere are common – typically about 10% of the total charge annually. This has motivated

Energy-Efficient SWIPT-Empowered D2D ModeSelection

April 16, 2020
Author(s)
Hamid Gharavi
While mode selection has been envisioned as the most cost-effective way to address the interference issue in Device-to-Device (D2D) communications, existing works have been largely conducted without consideration of the energy depletion of devices. In this
Was this page helpful?