BS 5422-2023 用于在 –40 °C 至 +700 °C 温度范围内运行的管道、储罐、容器、管道系统和设备的隔热材料指定方法

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BSI Standards Publication

Thermal insulating materials for pipes,

tanks, vessels, ductwork and equipment

operating within the temperature

range –40 °C to +700 °C – Method for

specifying

BS 5422:2023

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Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

Published by BSI Standards Limited 2023

ISBN 978 0 539 12737 9

ICS 27.220; 91.100.60; 23.020.01

The following BSI references relate to the work on this document:

Committee reference B/540/7

Draft for comment 22/30410783 DC

Amendments/corrigenda issued since publication

Date Text affected

BS 5422:2023 BRITISH STANDARD

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BRITISH STANDARD BS 5422:2023

Contents Page

Foreword v

0 Introduction 1

1 Scope 1

2 Normative references 2

3  

4 Application of this standard 3

5 General requirements 4

5.1 Physical characteristics 4

5.2 Installation requirements 5

5.3 Thermal conductivity 5

5.3.1 General 5

5.3.2 Composite insulation 5

5.3.3 Design value of thermal conductivity and thermal bridges 5

5.4 Temperature limitations 5

5.5 Thickness 6

5.6 Vapour barrier – Permeance requirements 6

Table 1 — Maximum permitted water vapour permeance in relation to plant temperature

at an ambient temperature of +20 °C (dry bulb) 7

5.7 Tests on physical properties 7

6 Refrigeration applications 7

6.1  

6.2 Physical characteristics 8

6.2.1 General 8

6.2.2 Fire performance 8

6.2.3 Water vapour barrier – Performance requirements 8

6.3 Insulation thickness – Protection against condensation and control of heat gain 8

Table 2 — Minimum insulation thickness for refrigeration applications to control condensation

and control heat gain on a high emissivity outer surface (0.90) with an ambient temperature of

+20 °C and a relative humidity of 70% 9

Table 3 — Minimum insulation thickness for refrigeration applications to control condensation

and control heat gain on a low emissivity outer surface (0.05) with an ambient temperature of

+20 °C and a relative humidity of 70% 10

Table 4 — Minimum insulation thickness for refrigeration applications to control condensation

and control heat gain on a high emissivity outer surface (0.90) with an ambient temperature of

+25 °C and a relative humidity of 80% 11

Table 5 — Minimum insulation thickness for refrigeration applications to control condensation

and control heat gain on a low emissivity outer surface (0.05) with an ambient temperature of

+25 °C and a relative humidity of 80% 12

7 Chilled and cold water applications 13

7.1  

7.2 Physical characteristics 13

7.2.1 General 13

7.2.2 Fire performance 13

7.2.3 Water vapour barrier – Permeance requirements 13

7.3 Insulation thickness 14

7.3.1 Protection against condensation 14

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标签： #管 #隔热材料 #隔热

摘要：

BS 5422-2023 是英国标准协会发布的最新版隔热材料指定方法标准，专门针对在 –40 °C 至 +700 °C 极端温度范围内运行的管道、储罐、容器、管道系统及工业设备。该标准为工程设计与施工人员提供了系统化的隔热材料选择与厚度计算指南，涵盖从低温冷冻管路到高温蒸汽管线的全场景应用。标准明确了材料的热导率、防火性能、机械强度及防潮要求，并提供了不同工况下的推荐计算基准与方法，适用于石油、化工、能源、建筑及制冷等行业。通过采用 BS 5422-2023，用户可确保隔热系统在宽温域内实现最优

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BS 5422-2023 用于在 –40 °C 至 +700 °C 温度范围内运行的管道、储罐、容器、管道系统和设备的隔热材料指定方法

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