NS EN 305 : 1ED 1997

Foreword
Introduction
1 Scope
2 Normative references
3 Symbols and abbreviations
    3.1 Roman letters
    3.2 Greek letters
    3.3 Subscripts
4 Definitions and meaning of performance
    4.1 Basic terms
    4.2 Parameters characterizing heat exchangers
    4.3 Energy balance
    4.4 Heat transfer coefficients
    4.5 Heat transfer surface
5 Performance parameters
    5.1 Characteristic entities
    5.2 Ratios
6 General information on test procedures
    6.1 Introduction
    6.2 Test conditions
    6.3 Test procedure
Annexes
A (informative) energy balance
B (informative) Heat transfer coefficients

Defines general terms and calculation used in determination of the performance of heat exchangers inclusive of related theory and general test methods. Applicable to heat exchangers graded according to the general arrangement of heat transfer specified by heat transfer surface types of 4.1 and 4.2 of prEN 247:1996.