Test method for the performance of heat exchangers and heat exchange element—Part 1: General requirements
1 Scope
This part of GB/T 27698 specifies the general performance test methods for test conditions of liquid-liquid without phase change, vapor-liquid condensation with phase change and vapor-liquid evaporation with phase change of tubular heat exchangers, plate heat exchangers, spiral heat exchangers and heat transfer tubes for tubular heat exchangers.
The test fluids applicable to this part are liquid-liquid and vapor-liquid.
This part only considers the heat conduction thermal resistance of heat exchange plate (tube) material, and does not consider the fouling thermal resistance inside and outside the heat exchange plate (tube).
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 151 Tubular heat exchangers
JB/T 4751 Spiral heat exchanger
NB/T 47004 Plate heat exchangers
3 Terms, definitions and symbols
For the purposes of this part, the terms and definition given in GB 151, JB/T 4751 and NB/T 47004, as well as the following symbols and units apply. The symbols, units and corner markings used in this part are listed in Table 1.
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Foreword i
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Requirements
5 Test conditions and performance determination
6 Measurement items
7 Calculation of test data
8 Original data
9 Test report
Annex A (Informative) Thermophysical property data
