Thermal transmittance values (U-values) of concrete block walls, with and without core insulation, tested at three laboratories are summarized . Insulations were perlite, vermiculite, expanded polystyrene (EPS) beads, and EPS inserts.
Measured U-values are compared to values calculated using the isothermal planes method. For empty core concrete block walls with known concrete thermal conductivity, measured U-values were within 10% of calculated values. However, for walls with core insulation, measured U-values differed by 0% to 40% from calculated values.
Sensitivity of wall thermal transmittance to changes in block configuration, concrete thermal conductivity, and fill thermal conductivity is discussed.
Units: Dual
Citation: Symposium, ASHRAE Transactions, 1985, vol. 91, pt. 2B, Honolulu, HI
Product Details
- Published:
- 1985
- Number of Pages:
- 19
- File Size:
- 1 file , 1.4 MB
- Product Code(s):
- D-HI-85-01-2
