Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principle
5 Requirements for test specimens and apparatus
5.1 General
5.2 Surround panels
5.3 Test specimens
5.4 Calibration panels
5.5 Temperature measurements and baffle
positions
5.6 Air flow measurement
6 Test procedure
6.1 General
6.2 Calibration measurements
6.2.1 General
6.2.2 Total surface resistance
6.2.3 Surface resistances and surface
coefficients of heat transfer
6.2.4 Surround panel and edge corrections
6.3 Measurement procedure for test specimens
6.4 Expression of results for standardized test
applications
7 Test report
Annex A (normative) - Environmental temperatures
A.1 General
A.2 Environmental temperature
A.3 Mean radiant temperature
A.4 Convective surface heat transfer coefficient
Annex B (normative) - Linear thermal transmittance of
the edge zone
Annex C (informative) - Design of calibration transfer
standard (CTS)
C.1 Design of glazed calibration panels
C.1.1 General
C.1.2 Materials
C.1.3 Construction details
C.2 Calibration transfer standard design
Annex D (informative) - Example of calibration test and
measurement of window specimen
D.1 Calibration test with panel size 1,20 m * 1,20 m
D.2 Window specimen measurement
Annex E (informative) - Analytical calibration procedure
using heat balance equations
E.1 General
E.2 Warm-side surface
E.3 Cold-side surface
E.4 Calibration results
Annex F (informative Annex) - Uncertainty analysis for
hot boxes
F.1 Introduction
F.2 Measured U-value Uncertainty Presentation
F.3 Uncertainties of Fundamental Measurements
F.4 Uncertainty Propagation on the U-value
F.5 Uncertainty Propagation on the Specimen Area
F.6 Uncertainty Propagation on the Specimen Net Heat
Transfer
F.7 Conclusions and Recommendations
F.8 Example determination of uncertainty
Bibliography