ISO 10051:1996

INTERNATIONAL
IS0
STANDARD
10051
First edition
1996-04-o I
- Moisture effects on
Thermal insulation
heat transfer - Determination of thermal
transmissivity of a moist material
/so/a tion thermique - Effets de /‘humidit sur /es propriktbs relatives au
transfert de chaleur - Dbermina tion de la transmissivite thermique d’un
matbriau humide
Reference number
IS0 10051 :I 996(E)

---------------------- Page: 1 ----------------------
IS0 10051:1996(E)
Contents
Page
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Symbols and units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 General considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Description of heat and mass transfers . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Determination of thermal transmissivity of a moist materia
6 Test apparatus . . .
7 Test procedure . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.2 Specimen preparation and conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.3 Selection of phase A or C . . .
6
7.4 Derivation of thermal transmissivity from measured values of heat
flow and temperatures . . . 6
7.5 Flow chart of possible test procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.6 Sources of error . . . 9
7.7 Calculations . . . 9
8 Test report . . . 9
Annexes
A Theoretical background
..................................... ..................... 11
B Evaluation of moisture flow and cases for which g”=h, is small
15
C Approximate solutions of A*(W) with negligible movement of
liquid . . . 17
D Derivation of ;1* from measured values of heat flow and temperatures
in phase C with movement of liquid in the test specimen . . . 18
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, Including photocopyrng and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii

---------------------- Page: 2 ----------------------
0 IS0
IS0 10051:1996(E)
E Bibliography
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
. . .
III

---------------------- Page: 3 ----------------------
0 IS0
IS0 10051:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 10051 was prepared by Technical Committee
lSO/TC 163, Thermal insulation, Subcommitt
...

INTERNATIONAL
IS0
STANDARD
10051
First edition
1996-04-o I
- Moisture effects on
Thermal insulation
heat transfer - Determination of thermal
transmissivity of a moist material
/so/a tion thermique - Effets de /‘humidit sur /es propriktbs relatives au
transfert de chaleur - Dbermina tion de la transmissivite thermique d’un
matbriau humide
Reference number
IS0 10051 :I 996(E)

---------------------- Page: 1 ----------------------
IS0 10051:1996(E)
Contents
Page
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Symbols and units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 General considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Description of heat and mass transfers . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Determination of thermal transmissivity of a moist materia
6 Test apparatus . . .
7 Test procedure . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.2 Specimen preparation and conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.3 Selection of phase A or C . . .
6
7.4 Derivation of thermal transmissivity from measured values of heat
flow and temperatures . . . 6
7.5 Flow chart of possible test procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.6 Sources of error . . . 9
7.7 Calculations . . . 9
8 Test report . . . 9
Annexes
A Theoretical background
..................................... ..................... 11
B Evaluation of moisture flow and cases for which g”=h, is small
15
C Approximate solutions of A*(W) with negligible movement of
liquid . . . 17
D Derivation of ;1* from measured values of heat flow and temperatures
in phase C with movement of liquid in the test specimen . . . 18
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, Including photocopyrng and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii

---------------------- Page: 2 ----------------------
0 IS0
IS0 10051:1996(E)
E Bibliography
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
. . .
III

---------------------- Page: 3 ----------------------
0 IS0
IS0 10051:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 10051 was prepared by Technical Committee
lSO/TC 163, Thermal insulation, Subcommitt
...