NF EN 305
NF EN 305

NF EN 305

November 1997
Standard Current

Heat exchangers. Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers.

Le présent document s'adresse aux constructeurs, aux utilisateurs et aux laboratoires d'essais des échangeurs thermiques.

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Main informations

Collections

National standards and national normative documents

Publication date

November 1997

Number of pages

24 p.

Reference

NF EN 305

ICS Codes

27.060.30   Boilers and heat exchangers

Classification index

E38-321

Print number

1 - octobre 1997

European kinship

EN 305:1997
Sumary
Heat exchangers. Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers.

Le présent document s'adresse aux constructeurs, aux utilisateurs et aux laboratoires d'essais des échangeurs thermiques.
Replaced standards (1)
E38-321
E38-321
December 1990
Standard Cancelled
Heate exchangers. Definitions of performance of heat exchangers and the general test procedure for establishing performance of all heat exchangers.

La présente norme expérimentale s'adresse aux constructeurs, aux utilisateurs et aux laboratoires d'essai des échangeurs thermiques.

Table of contents
  • Avant-propos
    3
  • 0 Introduction
    4
  • 1 Domaine d'application
    4
  • 2 Références normatives
    4
  • 3 Symboles et abréviations
    5
  • 3.1 Lettres romaines
    5
  • 3.2 Lettres grecques
    5
  • 3.3 Indices
    6
  • 4 Définitions et signification de la performance
    6
  • 4.1 Termes fondamentaux
    6
  • 4.2 Grandeurs caractérisant les échangeurs thermiques
    9
  • 4.3 bilan énergétique
    10
  • 4.4 coefficients d'échange thermique
    10
  • 4.5 surface d'échange thermique
    10
  • 5 Paramètres de performance
    11
  • 5.1 Grandeurs caractéristiques
    11
  • 5.2 Rapports
    14
  • 6 Informations générales concernant les modes opératoires d'essai
    18
  • 6.1 Introduction
    18
  • 6.2 Conditions d'essai
    19
  • 6.3 Mode opératoire d'essai
    20
  • Annexe A (informative) Bilan énergétique
    21
  • Annexe B (informative) Coefficients de transfert thermique
    22
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