Thermal performance of building materials and components. Principles for the determination of thermal properties of moist materials andcomponent s

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

12-12-2005

Publisher

British Standards Institution

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 > kg/m[3] (between 50 % RH and 80 % RH).

Committee	B/540
DocumentType	Standard
Pages	32
PublisherName	British Standards Institution
Status	Current

Standards	Relationship
CEN/TR 14613:2003	Identical

EN ISO 10456:2007/AC:2009	BUILDING MATERIALS AND PRODUCTS - HYGROTHERMAL PROPERTIES - TABULATED DESIGN VALUES AND PROCEDURES FOR DETERMINING DECLARED AND DESIGN THERMAL VALUES
EN 1934:1998	Thermal performance of buildings - Determination of thermal resistance by hot box method using heat flow meter - Masonry
EN ISO 8990:1996	Thermal insulation - Determination of steady-state thermal transmission properties - Calibrated and guarded hot box (ISO 8990:1994)
ISO 10051:1996	Thermal insulation — Moisture effects on heat transfer — Determination of thermal transmissivity of a moist material
EN 12664:2001	Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Dry and moist products of medium and low thermal resistance
ISO 10456:2007	Building materials and products — Hygrothermal properties — Tabulated design values and procedures for determining declared and design thermal values
EN 12429:1998	Thermal insulating products for building applications - Conditioning to moisture equilibrium under specified temperature and humidity conditions
ISO 8990:1994	Thermal insulation — Determination of steady-state thermal transmission properties — Calibrated and guarded hot box

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PD CEN/TR 14613:2003

Current

Table of Contents

Abstract

General Product Information

International Equivalents

Standards Referencing This Book

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