I.S. CEN TR 14613:2004

Foreword
Introduction
1 Background
  1.1 General
  1.2 Needs related to standardisation
  1.3 Scope of this technical report
2 References
3 Terms, definitions, symbols and units
  3.1 Terms and definitions
  3.2 Symbols and units
4 Moisture effects on heat transfer
5 Measurement procedures, dry material
6 Measurement procedures, moist material
  6.1 Introduction
  6.2 Conditioning
  6.3 Errors due to moisture redistribution
      6.3.1 General
      6.3.2 Moisture movement small enough to neglect
            effects of phase changes
      6.3.3 Measurements at moisture equilibrium
7 Measurement procedures - Effects of moisture in hot
  box measurements
  7.1 Background
  7.2 Determination of R* in a hot box
  7.3 Estimation of errors due to moisture
Annex A (informative) Estimation of stabilization time
Annex B (informative) Experimental determination of
        moisture distribution
Annex C (informative) A method for the theoretical
        estimation of the moisture distribution
Annex D (informative) A method of calculation lambda*
        at moisture equilibrium
Annex E (informative) Some basic equations for heat
        and moisture transfer used in this technical
        report

Gives the effects of moisture on heat transfer, which is given here, is valid for all types of materials, but the applications and detailed guidelines have been developed with a specific type of material in mind: masonry with medium or high thermal conductivity, the physical characteristics of which can be roughly expressed as follows: hygrothermal transmissivity: lambda* > 0.10 W/(m.K) vapour permeability: delta[v] < 5*10[-6] m[2]/s or delta[p] < 0.4*10[-10] kg/(m.s.Pa) moisture differential capacity ("hygroscopicity"): xi > 10 kg/m[3] (between 50 % RH and 80 % RH).