Modeling of heat transfer through fiberglass insulation to assess attic radiant barriers: Final report

Technical Report · Sun Dec 01 04:00:00 EST 1985

OSTI ID:6203810

Roux, J A; Rish, III, J W

Heat transfer results are presented for fibrous insulations (fiberglass) undergoing coupled transient conduction and radiation heat transfer under the influence of a temporally varying incident radiative flux and with temporally varying temperature boundaries. The heat transfer analysis was performed by solving the one-dimensional radiative transport equation for an absorbing, emitting, and scattering medium simultaneously with the one-dimensional energy equation. An iterative solution procedure was used in which the radiative transport equation was solved by the method of discrete ordinates, and where the energy equation was solved numerically with a control volume based finite difference scheme. The study was extended to include an analysis of the influence of reflective radiant barriers on the total heat transfer through the fiberglass by making appropriate adjustments to the radiative boundary conditions. Boundary conditions used in this analysis correspond to situations that would be typical of residential attics for a number of seasonal conditions.

• Research Organization: Tennessee Valley Authority, Chattanooga (USA). Div. of Energy Demonstrations and Technology; Mississippi Univ., University (USA). Dept. of Mechanical Engineering
• OSTI ID: 6203810
• Report Number(s): TVA/OP/EDT-87/15; ON: DE88900009
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
ATTICS
BUILDINGS
ENERGY TRANSFER
HEAT TRANSFER
RESIDENTIAL BUILDINGS
THERMAL INSULATION