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2018

Non-dismantlable spiral plate heat exchanger types and parameters

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1. Subject Matter and Scope The national industry standard JB/T4723-92 in our country specifies the basic parameters such as nominal pressure, nominal diameter, and calculated heat exchange area for non-removable spiral plate heat exchangers made of carbon steel and stainless acid-resistant steel. This standard applies to non-removable spiral plate heat exchangers with a nominal pressure greater than 1.6 MPa, a nominal diameter not exceeding 1600 mm, and a nominal heat exchange area not exceeding 120 m2. However, with technological advancements, large non-removable spiral plate heat exchangers have been widely used in the national economy, and removable spiral plate heat exchangers have also seen significant development, thus exposing the standard.

1. Theme content and applicable scope

The national industry standard JB/T4723-92 in China specifies the basic parameters such as the type nominal pressure, nominal diameter, and calculated heat exchange area for non-removable spiral plate heat exchangers made of carbon steel and stainless acid-resistant steel.

This standard applies to non-removable spiral plate heat exchangers with a nominal pressure greater than 1.6 MPa, a nominal diameter not exceeding 1600 mm, and a nominal heat exchange area not exceeding 120 m². However, with technological advancements, large non-removable spiral plate heat exchangers have been widely used in the national economy, and removable spiral plate heat exchangers have also seen significant development, revealing certain limitations of this standard. Therefore, this appendix only provides some useful references.

2. Symbol explanation

PN - Nominal pressure, MPa

DN - Nominal diameter, mm

FN - Nominal heat exchange area, m²;

F - Calculated heat exchange area, m²;

b - Channel spacing, mm;

δ - Plate thickness, mm

H - Plate width, mm

V - Treatment capacity at a flow rate of 1 m/h, m³/h

Lt - Length of the spiral channel, m;

F - Area of the spiral channel, m²;

dn - Nominal diameter of the connecting pipe, mm;

d - Diameter of the central pipe, mm

3. Type

The structural type of non-removable spiral plate heat exchangers can be referred to in Chapter 3.1.3.

4. Basic parameters

4.1 Nominal pressure

Nominal pressure refers to the maximum working pressure that the channel can withstand.

PN: 0.6, 1.0, 1.6 MPa

4.2 Nominal diameter

For carbon steel: 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600 mm;

For stainless acid-resistant steel: 300, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600.

4.3 Nominal heat exchange area

For carbon steel: 6, 8, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100, 1200 m²;

For stainless acid-resistant steel: 1, 2, 4, 6, 8, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 m².

5. Main parameters of non-removable spiral plate heat exchangers

5.1 The main parameters of carbon steel are shown in Table 1.

Considerations for the selection and design of air heat exchangers (radiators)

None

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Considerations for the selection and design of air heat exchangers (radiators)

None

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Chongqing Southwest Saiwell Heat Exchange Equipment Co., Ltd.

Specializing in the research, development, production and sales, equipment consulting, maintenance, and accessory services of heat exchange technology, equipment, and systems, and undertaking the design and installation of thermal system engineering, energy conservation and emission reduction, and energy conservation and emission reduction system engineering.

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