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You searched on: Author: william healy

Displaying records 21 to 30 of 35 records.
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21. In-Situ Measurement of the Moisture Content of Building Materials Using Ultra-Wideband Radio Waves
Published: 8/1/2006
Author: William M Healy
Abstract: A study was carried out to determine the feasibility of commercial, off-the-shelf, and potentially low-cost ultra-wideband radio hardware to serve as a measurement tool for the moisture content of materials making up a building envelope. The study i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861005

22. Remotely Accessed Photovoltaic Power Experiment
Published: 3/21/2006
Authors: W J Hutzel, William M Healy
Abstract: A solar energy experiment that estimates the number of photovoltaic panels needed to provide supplemental power for a typical residence is described. The project is unique because it uses freely available on-line resources for collecting and analyzi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860946

23. Lessons Learned in Wireless Monitoring
Published: 10/2/2005
Author: William M Healy
Abstract: The emergence of wireless communications technology has led to an increasing interest in sensors that are free from wiring constraints that increase the cost of installation of a sensor network and create a confusing collection of wires in a building ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860959

24. Fabrication of a Guarded-Hot-Plate Apparatus for Use Over an Extended Temperature Range and in a Controlled Gas Atmosphere
Published: 6/29/2005
Authors: Robert R Zarr, Daniel Robert Flynn, John W Hettenhouser, Nolan J Brandenburg, William M Healy
Abstract: This paper describes the fabrication of a guarded-hot-plate apparatus suitable for determining the steady-state thermal transmission properties of insulation specimens from 90 K to 900 K in a controlled gas atmosphere from 10^u-5^ kPa to 105 kPa. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860976

25. High-Temperature Guarded Hot Plate Apparatus Optimal Locations of Circular Heaters
Published: 6/1/2005
Authors: Daniel Robert Flynn, William M Healy, Robert R Zarr
Abstract: The National Bureau of Standards (now the National Institute of Standards and Technology (NIST)) pioneered the use of circular line-heat-sources in guarded hot plate (GHP) apparatus, the most common type of absolute apparatus for measurement of the t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860987

26. High-Temperature Guarded Hot Plate Apparatus Control of Edge Heat Loss
Published: 6/1/2005
Authors: Daniel Robert Flynn, William M Healy, Robert R Zarr
Abstract: The guarded hot plate (GHP) apparatus is the most common type of absolute apparatus for measurement of the thermal transmission properties of thermal insulation. As the name implies, the hot meter plate is surrounded by a coplanar guard plate, separa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861062

27. Detection of Moisture Accumulation in Wall Assemblies Using Ultra-Wideband Radio Signals.
Published: 12/5/2004
Authors: William M Healy, E Vandoorn
Abstract: This paper discusses the use of ultra-widehand radio signals near 5 GHz to detect moisture problems within building assemblies. Ultra-widehand signals are made up of a large spectrum of electromagnetic waves, and hardware is available to temporally r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101195

28. Detection of Moisture Accumulation in Wall Assemblies Using Ultra-Wideband Radio Signals
Published: 12/1/2004
Authors: William M Healy, E NMI van Doorn
Abstract: This paper discusses the use of ultra-wideband radio signals to detect moisture problems within building assemblies. Ultra-wideband signals are made up of a large spectrum of electromagnetic waves, and hardware is available to temporally resolve the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861065

29. Development of an Optical Fiber-Based Moisture Sensor for Building Envelopes
Published: 10/1/2003
Authors: William M Healy, S Luo, M Evans, A Sucheta, Y Liu
Abstract: Optical fiber-based moisture sensors have been developed to help detect moisture problems in building envelopes. The sensors are created with a coating on a long period grating that is written onto optical fiber. As the coating absorbs moisture fro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860890

30. Variability in Energy Factor Test Results for Residential Electric Water Heaters
Published: 10/1/2003
Authors: William M Healy, J D Lutz, A B Lekov
Abstract: Recent modifications to the minimum energy efficiency requirements for residential water heaters have spurred an investigation into the variability in testing high-efficiency electric water heaters. While initial inter-laboratory comparisons showed ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860888



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