This standard specifies the type and basic parameters of hot coils. This standard applies to air conditioning, ventilation, and heating coils whose medium is hot water or steam and whose maximum working pressure does not exceed 1.3 MPa. This standard does not apply to coils using electric heating, thermal oil and other heating media. JB/T 6414-1992 Thermal coil type and basic parameters JB/T6414-1992 Standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Hot Coil
Subject Content and Scope of Application
Type and Basic Parameters
This standard specifies the type and basic parameters of the hot coil . JB/T 6414—92
This standard is applicable to air conditioning, ventilation, and heating coils whose medium is hot water or steam and the maximum working pressure does not exceed 1.3MPa. This standard does not apply to coils using electric heating, thermal oil and other heating media. 2 Reference standards
JB4302 Heating and cooling ventilation equipment model compilation method 3 types
3.1 Medium circulation mode
3.1.1 Straight-through type (Figure 1)
All heat exchange tubes The flow of media is consistent and passes through at once. Import
Port
Figure 1
3.1.2 Single and multi-pass formula (Figure 2)
The heat medium makes one or more round trips in the heat exchange tube passage flow. Import one
port
3.2 structural type
3.2.1 rectangular (Figure 3)
Figure 2
Ministry of Mechanical and Electronics Industry of the People's Republic of China 1992- 07-20 Approved for export
Implemented by
1993-01-01
731
3.2.2 round (Picture 4)
3.3 model| |tt||JB/T 6414—92
Figure 3
Export
Figure 4
The hot coil model preparation method is in accordance with the provisions of JB4302. 4
Basic number
4.1
The rated working conditions are specified in Table 1.
Table 1
number
parameter
high temperature
air inlet state dry bulb temperature
water supply state
water inlet Temperature
Water velocity
Steam pressure (gauge pressure)
Windward flow velocity
4.2 Structural parameters are as specified in Table 2
732||tt| |C
95
m/s
MPa
m/s
4
water
low temperature|| tt||20
60
2.5
$
import
one export
steam
0.1||tt ||4
Laminated tube
Rolled tube
item
item
laminated tube
steel-steel||tt ||Aluminum-aluminum
Steel-aluminum
Aluminum
Copper
Steel-aluminum composite
Copper-aluminum composite
Copper- Aluminum sleeve tube
Nominal diameter of heat medium inlet and outlet pipe joint
No. of tube rows
Material
Steel
Aluminum
Copper
Steel
Copper
JB/T 641492
Table 2
Tube
Sub
Outer diameter||tt ||a
9.0~30
10~16
18~25
16~50
1734
12~26| |tt||16~25
9~~16
Wall thickness
2~3
0.75~1
2-3||tt ||24
1～2
2~2.5
1~~1.5
0.351
Note: D material is a single metal (aluminum, copper ) The wall thickness of the rolled sheet tube is the size after rolling. ②The rib tube bundles are arranged in regular or staggered rows along the air flow direction. Additional notes:
This standard is proposed and administered by the Hefei General Machinery Research Institute of the Ministry of Mechanical and Electronics Industry. This standard is drafted by Tianjin Heater Factory. The main drafter of this standard: Zhang Zhicheng.
Material
steel
lanthanum
lead aluminum
steel
aluminum
aluminum
copper| |tt||Aluminum
15~80
1~10
rib
sheet thickness
0.3~0.5
0. 2
0. 3~~0. 5
0. 3~~0. 6
0.45~0.6
0.3~0. 65
0.15 ~0.3
piece
piece height
h
10~16
10
11~16
mm| |tt||Film pitch
E
315bZxz.net
3.2
19.515.82.32.8
1116
5～10|| tt||8～10
9~16
1.8-5
3.2~4.2
2.3~~5
1.8~5||tt ||733
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