Fibrous insulation heat-transfer model
A mathematical model is developed for the transfer of heat through fibrous insulating materials. The mathematical derivation of the model based upon fundamental concepts of heat transfer and certain simplifying assumptions is described. It is shown that the efficiency of a fibrous insulation may be characterized by three model constants. One constant is calculated from fiber emissivity data and the other two may be determined from measurement of the apparent thermal conductivity at two different temperatures by the ASTM Test for Steady-State Thermal Transmission Properties by Means of the Guarded Hot Plate. Actual test data are included to indicate the model's validity throughout the temperature ranges of practical interest for the materials investigated. In one form, the model may be used to estimate the apparent thermal conductivity of a material for various combinations of hot-face and cold-face temperatures. The model may also be used to calculate heat losses and corresponding temperature profiles through insulated systems under known or assumed boundary conditions without relying upon the concept of mean temperature.
- Research Organization:
- Eagle Picher Industries, Inc., Joplin, MO
- OSTI ID:
- 6379743
- Report Number(s):
- ASTM-STP-660; CONF-770936-
- Journal Information:
- Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Vol. 660; ISSN ASTTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320000* -- Energy Conservation
Consumption
& Utilization
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
CERAMICS
DATA
EFFICIENCY
ENERGY EFFICIENCY
ENERGY LOSSES
ENERGY TRANSFER
EXPERIMENTAL DATA
HEAT LOSSES
HEAT TRANSFER
INFORMATION
LOSSES
MATHEMATICAL MODELS
MINERAL WOOL
NUMERICAL DATA
PHYSICAL PROPERTIES
SIMULATION
TESTING
THERMAL CONDUCTIVITY
THERMAL INSULATION
THERMODYNAMIC PROPERTIES