EN 247:1997

Foreword
Introduction
1 Scope
2 Definitions
  2.1 Parallel flow arrangement
  2.2 Counterflow arrangement
  2.3 Pure crossflow
  2.4 Antimethodic overall flow arrangement
  2.5 Methodic overall flow arrangement
  2.6 Two-phase fluid
  2.7 Single-phase fluid
  2.8 Fluidized bed
  2.9 Method of heat transfer
  2.10 Number of passages (passes)
  2.11 Tube sheet
  2.12 General arrangement of heat transfer
  2.13 Steady or permanent thermal conditions
  2.14 Cyclic thermal conditions
3 Terminology - Main criteria
  3.1 Physical criteria
       3.1.1 General arrangement of heat transfer
       3.1.2 Method of heat transfer
       3.1.3 Arrangement of fluid flow
       3.1.4 Thermal conditions of the heat transfer
              surface
       3.1.5 Number and type of fluids
  3.2 Design criteria
       3.2.1 Type of design
       3.2.2 Heat transfer
       3.2.3 Methods to facilitate expansion
       3.2.4 Material of heat transfer wall
       3.2.5 Constructive solutions related to cleaning
       3.2.6 Cleaning possibilities
4 Detailed terminology
  4.1 General arrangement of heat transfer
       4.1.1 With direct transfer
       4.1.2 With accumulation
       4.1.3 In fluidized bed
       4.1.4 With cooling
       4.1.5 With intermediate medium (with natural
              or forced circulation)
  4.2 Method of heat transfer
       4.2.1 Single-phase media in all circuits
       4.2.2 Single-phase media versus two-phase media
             in related circuits
       4.2.3 Two-phase media in all circuits
  4.3 Diagram of fluid flow
       4.3.1 Single pass
       4.3.2 Multiple passes
  4.4 Thermal conditions of heat transfer surface
       4.4.1 Steady
       4.4.2 Cyclic
  4.5 Number of fluids (media)
       4.5.1 Two fluids (media)
       4.5.2 Three fluids (media)
       4.5.3 N fluids (media)
  4.6 Design type
       4.6.1 Shell and tube heat exchangers
       4.6.2 Plate heat exchangers
       4.6.3 Heat exchangers of stacked blocks or with
              crossing channels
       4.6.4 Matrix heat exchangers
  4.7 Heat transfer surfaces and walls
       4.7.1 Smooth
       4.7.2 Coated
       4.7.3 Fabricated
       4.7.4 With built-on elements
       4.7.5 With safety wall (double wall)
  4.8 Expansion possibilities
       4.8.1 Rigid
       4.8.2 Elastic
       4.8.3 Free
       4.8.4 With sealing device
  4.9 Materials of heat transfer wall
       4.9.1 Metallic
       4.9.2 Non-metallic
       4.9.3 Special
       4.9.4 Composite
  4.10 Constructive solutions related to cleaning
       4.10.1 Non-dismountable
       4.10.2 Dismountable
  4.11 Cleaning possibilities
       4.11.1 Mechanical means
       4.11.2 Acoustic means
       4.11.3 Chemical means
Annex A (informative) Main functions of heat exchangers in
                      various technological fields related
                      to this European Standard
Annex B (informative) Examples for illustration of the
                      terminology in clause 4
Figures