CRYOGENIC VESSELS - METHODS FOR PERFORMANCE EVALUATION OF THERMAL ISOLATION

Available format(s)

Hardcopy , PDF

Language(s)

German, English

Published date

01-01-1998

Publisher

German Institute for Standardisation (Deutsches Institut für Normung)

National Foreword
Foreword
Introduction
1. Scope
2. Definitions
3. General conditions for all methods
4. Measuring the heat leak by the loss of product method
    4.1 General
    4.2 Test procedure
    4.3 Determination of the heat leak in units of energy
         per unit time
    4.4 Determination of the heat leak as a percentage of
         product lost per 24 h
5. Determination of the holding time (open system) in days
    from heat leak data
6. Holding times for closed systems
    6.1 Determination of the equilibrium holding time from
         heat leak data
    6.3 Static experimental holding time
7. Test report
8. Bibliography
Annex A (normative) Conversion of measured volumetric gaseous
flow to mass flow
Annex B (normative) Correction of measured mass flow rate with
regard to deviation from reference conditions
Annex C (normative) Equivalent loss determination, for product
other than the test product

A practical method to determine the heat leak performance of cryogenic vessels. Methods include measurement on open and closed systems. This standard does not specify neither the requirement levels for insulation performance nor when the methodology defined is applicable. These requirements may be defined in operational standards/regulations or in design.

DocumentType	Standard
Pages	11
PublisherName	German Institute for Standardisation (Deutsches Institut für Normung)
Status	Current

Standards	Relationship
NBN EN 12213 : 1999	Identical
UNE-EN 12213:1999	Identical
NF EN 12213 : 1999	Identical
BS EN 12213:1999	Identical
SN EN 12213 : 1999	Identical
I.S. EN 12213:1999	Identical
NEN EN 12213 : 1998	Identical
NS EN 12213 : 1ED 1999	Identical
UNI EN 12213 : 2000	Identical
EN 12213:1998	Identical