I.S. EN ISO 8990:1997
Current
The latest, up-to-date edition.
THERMAL INSULATION - DETERMINATION OF STEADY-STATE THERMAL TRANSMISSION PROPERTIES - CALIBRATED AND GUARDED HOT BOX
Hardcopy , PDF
English
01-01-1997
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Section 1 General
1.1 Scope
1.2 Normative reference
1.3 Definitions
1.4 Symbols, units and relationships
1.5 Principle
1.6 Limitations and sources of errors
Section 2 Apparatus
2.1 Introduction
2.2 Design requirements
2.3 Metering box
2.4 Guard box
2.5 Specimen frame
2.6 Cold side chamber
2.7 Temperature measurements
2.8 Instrumentation
2.9 Performance evaluation and calibration
Section 3 Test procedure
3.1 Introduction
3.2 Conditioning of specimen
3.3 Specimen selection and mounting
3.4 Test conditions
3.5 Measurement periods
3.6 Calculations
3.7 Test report
Annexes
A Heat transfer at surfaces and environmental temperatures
B Bibliography
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