Reduction in the thermal resistance (R-value) of loose-fill insulation and fiberglass batts due to compression
A method is presented for calculating the thickness reduction of loose-fill insulations and fiberglass batts that result from compressive forces exerted by additional insulation. The thickness reduction is accompanied by an increase in density and a reduction in the R value of the compressed layer. Calculations for thermal resistance of two layers of insulation are given. Information in 4 appendices includes: identification of products tested (products from 3 companies); experimental values for thickness as a function of loading; Fortran programs and output; and calculated R values for stacked insulations. (MCW)
- Research Organization:
- Tennessee Technological Univ., Cookeville (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6560346
- Report Number(s):
- ORNL/Sub-7715/2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
CALCULATION METHODS
COMPRESSION
DENSITY
DIMENSIONS
FIBERGLASS
PHYSICAL PROPERTIES
R FACTORS
THERMAL CONDUCTIVITY
THERMAL INSULATION
THERMODYNAMIC PROPERTIES
THICKNESS
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
CALCULATION METHODS
COMPRESSION
DENSITY
DIMENSIONS
FIBERGLASS
PHYSICAL PROPERTIES
R FACTORS
THERMAL CONDUCTIVITY
THERMAL INSULATION
THERMODYNAMIC PROPERTIES
THICKNESS