You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Influence of Natural Convection in an Insulated Cavity on the Thermal Performance of a Wall

    Published: 0

      Format Pages Price  
    PDF (368K) 24 $25   ADD TO CART
    Complete Source PDF (14M) 751 $104   ADD TO CART


    The influence of the airtightness of the insulation layer in a partially filled cavity construction is discussed. In theory it is assumed that the insulation forms a continuous layer that is perfectly fixed against the inner wall of the cavity, leaving an air space between the outer wall and the insulation. However, in practice we frequently notice the presence of air gaps in the insulation layer, and of a second small cavity between the insulation and the inner wall. The influence of these inaccuracies on the heat transfer is studied by means of experimental research and computer simulations.

    This paper presents the results of extensive measurements on a partially filled cavity wall (temperature profiles, heat loss), using a calibrated Hot Box-Cold Box. These results are compared with calculations of the temperature profiles and the overall heat transfer. A second series of measurements deals with the influence of the slope of the cavity.


    thermal insulation, thermal transmittance, insulation in cavities, natural convection, calibrated Hot Box-Cold Box, airtightness, air leaks, workmanship, insulation in cavities, computer simulations

    Author Information:

    Lecompte, JGN
    Assistant, Laboratory of Building Physics, Katholieke Universiteit Leuven, Heverlee,

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP23320S