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Search Publications by: Robert R. Zarr (Assoc)

Displaying 26 - 43 of 43

Assessment of Uncertainties for the NIST 1016 mm Guarded-Hot-Plate Apparatus: Extended Analysis for Low-Density Fibrous-Glass Thermal Insulation

February 1, 2009

Author(s)

Robert R. Zarr

An assessment of uncertainties for the National Institute of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented. The uncertainties are reported in a format consistent with current NIST policy on the expression of measurement

Status of NIST Thermal Insulation Reference Materials

September 1, 2008

Author(s)

Robert R. Zarr

The current status of thermal insulation reference materials at the National Institute of Standards and Technology (NIST) is presented. This paper describes an ongoing thermal insulation measurement program that provides the public with Calibrated Transfer

Slug Calorimeter for Evaluating the Thermal Performance of Fire Resistive Materials.

December 1, 2006

Author(s)

Dale P. Bentz, D R. Flynn, J H. Kim, Robert R. Zarr

Fabrication of a Guarded-Hot-Plate Apparatus for Use Over an Extended Temperature Range and in a Controlled Gas Atmosphere

June 29, 2005

Author(s)

Robert R. Zarr, Daniel R. Flynn, John W. Hettenhouser, Nolan J. Brandenburg, William M. Healy

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 -5 kPa to 105 kPa. The long

High-Temperature Guarded Hot Plate Apparatus Control of Edge Heat Loss

June 1, 2005

Author(s)

Daniel R. Flynn, William M. Healy, Robert R. Zarr

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, separated by

High-Temperature Guarded Hot Plate Apparatus Optimal Locations of Circular Heaters

June 1, 2005

Author(s)

Daniel R. Flynn, William M. Healy, Robert R. Zarr

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 thermal

Collaborative Thermal Conductivity Measurements of Fibrous Glass and Expanded Polystyrene Reference Materials

November 15, 2004

Author(s)

Robert R. Zarr, James J. Filliben

Thermal conductivity measurements of four thermal insulation reference materials are presented. The measurements were obtained from an international collaborative test program of guarded-hot-plate laboratories from Canada, France, Japan, United Kingdom

An International Study of Guarded Hot Plate Laboratories Using Fibrous Glass and Expanded Polystyrene Reference Materials

October 1, 2002

Author(s)

Robert R. Zarr, James J. Filliben

Thermal conductivity measurements of four thermal insulation reference materials are presented. The measurements were obtained from an international study of guarded-hot-plate laboratories from Canada, France, Japan, United Kingdom, and United States. For

Design Concepts for a New Guarded Hot Plate Apparatus for Use Over an Extended Temperature Range

October 1, 2002

Author(s)

D R. Flynn, Robert R. Zarr, Mahn-Hee Hahn, William M. Healy

The National Institute of Standards and Technology is building a new guarded hot plate apparatus (GHP) for use at temperatures from 90 K to 900 K, with provision to conduct tests in various gases at controlled pressures from 0.013 Pa to 0.105 MPa

A History of Testing Heat Insulators at the National Institute of Standards and Technology

July 1, 2001

Author(s)

Robert R. Zarr

The history of testing heat insulators at the National Institute of Standards and Technology (formerly the National Bureau of Standards is nearly as long as the history of the institute itself. The participation of the institute in building research

Calibration of Thin Heat Flux Sensors for Building Applications Using ASTM C 1130

May 1, 2001

Author(s)

Robert R. Zarr, V Martinez-Fuentes, James J. Filliben, Brian P. Dougherty

Calibration measurements of thin heat flux sensors for building applications are presented. The findings support the continued development of precision and bias statements for ASTM Practice C 1130. Measurements have been conducted using a 1016 mm diameter

Thermal Performance of Residential Electric Water Heaters Using Alternative Blowing Agents

June 1, 2000

Author(s)

Arthur H. Fanney, Robert R. Zarr, J D. Ketay-Paprocki

This paper presents the results of a study aimed at quantifying the performance of water heaters insulated with polyurethane foams using three different blowing agents - HCFC-141b, H2O/CO2, and HFC-245fa. The thermal conductivity of the foam was measured

Development of a NIST Standard Reference Database for Thermal Conductivity of Building Materials

March 1, 2000

Author(s)

Robert R. Zarr, G R. Dalton, S M. Fioravante

The development of a National Institute of Standards and Technology (NIST) Standard Reference Database for the thermal conductivity of building materials is presented. The source of the data is the collection of thermal conductivity measurements produced

An Internet Database for Thermal Transmission Properties of Insulating and Building Materials

January 31, 2000

Author(s)

Robert R. Zarr, G R. Dalton

The source of the data is the collection of thermal conductivity data produced by NIST from 1933 to 1983 using their 200 mm guarded-hot-plate apparatus. During its service, the apparatus was considered the U.S. National standard for thermal conductivity

Interlaboratory 'Pilot Run' Study of Small Heat-Flow-Meter Apparatus for ASTM C 518

November 1, 1999

Author(s)

Robert R. Zarr, E S. Lagergren

Thermal conductivity measurements of a high-density glass-fiber thermal insulation material near 24 C are presented for the determination of the precision and bias of ASTM Test Method C 518. The measurements have been conducted by 13 laboratories using

Performance Testing of Alternative Blowing Agents for Foam Insulation of Residential Water Heaters

November 1, 1999

Author(s)

Arthur H. Fanney, Robert R. Zarr

The U.S. Department of Energy (DOE) has requested the assistance of the Pacific Northwest National Laboratory to conduct analyses to determine if the energy efficiency requirements for electric, gas- and oil-fired residential water heaters should be

Analytical Study of Residential Buildings With Reflective Roofs

October 1, 1998

Author(s)

Robert R. Zarr

Annual heating (cooling) loads, peak heating (cooling) loads, and exterior roof temperatures for a small compact ranch house are computed using the Thermal Analysis Research Program (TARP) developed at the National Institute of Standards and Technology

NIST/NRC-Canada Interlaboratory Comparison of Guarded Hot Plate Measurements: 1993-1997

June 1, 1997

Author(s)

Robert R. Zarr, M K. Kumaran, E S. Lagergren

Thermal conductivity measurements from an international interlaboratory study between the United States and Canada are presented for two materials, glass-fiber board and fibrous alumina silica. The measurements were determined using guarded hot plate