GB/T 29043-2023 in English

《GB/T 29043-2023建筑幕墙保温性能检测方法》由TC448（全国建筑幕墙门窗标准化技术委员会）归口，主管部门为住房城乡建设部。

Test method for thermal insulating performance of curtain walls

1 Scope

This document specifies the grading, testing principle, testing device, performance test and test report of thermal insulating performance of curtain walls.

This document is applicable to thermal insulating performance of curtain walls.

2 Normative references

The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 4132 Definitions of terms relating to thermal insulating materials
GB/T 10294 Thermal insulation - Determination of steady-state thermal resistance and related properties - Guarded hot plate apparatus
GB/T 13475 Thermal insulation - Determination of steady-state thermal transmission - Properties - Calibrated and guard hot box
GB/T 16839.1-2018 Thermocouples - Part 1: EMF specifications and tolerances
GB/T 31433 General specification for building curtain walls, windows and doors
GB/T 34327-2017 Terminology for curtain wall
GB/T 34336-2017 Reinforced nanoporous aerogel products for thermal insulation
GB 50736-2012 Design code for heating ventilation and air conditioning of civil buildings

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 4132, GB/T 34327-2017, and the following apply.

3.1
curtain wall
external envelope structure composed of panels and a supporting structure system, designed to have specified bearing capacity, deformation capacity, and the ability to adapt to the displacement of the main structure. It does not bear any load from the main structure

[Source: GB/T 34327-2017, 2.1, modified]

3.2
condensation resistance factor
parameters characterizing the surface condensation resistance of daylighting curtain wall

Note: That is, under steady state heat transfer, the percentage value of the difference between the average temperature of the hot side surface of the daylighting panel specimen (or specimen frame) and the average temperature of the cold box air and the average temperature of the hot box air and the average temperature of the cold box air, expressed by CRF.

4 Test principle

4.1 Heat transfer coefficient test

4.1.1 The calibrated hot box method is used to test the heat transfer coefficient of curtain walls based on the principle of steady state heat transfer.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test principle
5 Test devices
6 Performance test
7 Test reports
Annex A (Normative) Calibration of thermal current coefficient
Annex B (Normative) Installation method of daylighting curtain wall specimen
Annex C (Informative) Grading of thermal insulation performance of curtain wall
Annex D (Normative) Setting of test points for condensation resistance factor test