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Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications

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Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications

Payment Terms : L/C,T/T

Brand Name : YUHONG

Model Number : -

Certification : ASME , U STAMP , PED, API , ABS, LR, DNV, GL , BV, KR, TS, CCS

Place of Origin : China

MOQ : 1 SET

Price : 2000 ~ 10M USD

Supply Ability : 10000 Tons/Month

Delivery Time : 45-150 DAYS

Packaging Details : Pallet & Wooden Case

STANDARD : API 661, ASME PTC 30, ISO 15156, NACE MR0103

Driver Type : Forced Draught

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Forced Draught Air Cooled Heat Exchanger API 661 For Petroleum Industry
Forced Draught Air Cooled Heat Exchanger with API 661, Petroleum Industry
Selection of Induced Draught or Forced Draught
The air-cooled heat exchanger shall be either a forced-draught exchanger or an induced-draught exchanger and shall include the components shown in Figure 1 and any auxiliaries such as ladders, walkways and platforms. Forced-draught fans should be used, except that induced-draught fans should be considered for the following situations:
  • If temperature control of the process is critical and sudden downpour of rain (i.e. excessive cooling) can cause operating problems
  • To minimize the risk of hot-air recirculation
  • On sites where air-side fouling is a significant problem, however forced draft can be used if screens are specified
  • To improve thermal performance in the event of a fan failure (due to the stack effect)
  • In hot climates, where the fan plenum chamber shields the bundle from the sun
  • For services that have a temperature approach of 11 °C (20 °F) or less
Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications
Figure 1: Forced Draught vs Induced Draught Configurations
A) Forced Draught B) Induced Draught
1 - Tube Bundle 6 - Fan
2 - Header 7 - Fan Ring
3 - Nozzle 8 - Fan Deck
4 - Supporting Column 9 - Drive Assembly
5 - Plenum 10 - Fan Guard
Construction of Tube Bundle
Tube bundles shall be rigid, self-contained, and designed for handling as a complete assembly.
Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications
A) Removable cover-plate header
Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications
B) Removable bonnet header
Typical Construction of Tube Bundles
1 Tubesheet
2 Removable cover plate
3 Removable bonnet
4 Top and bottom plates
5 Tube
6 Pass partition
7 Gasket
8 Nozzle
9 Side frame
10 Tube spacer
11 Tube support cross-member
12 Tube keeper
13 Vent
14 Drain
15 Instrument connection
Tubes and Finning
Maximum Fin Selection Temperature for Fin Bonding Types:
Fin Bonding Type Maximum Process Temperature °C (°F)
Embedded fins 400 (750)
Externally bonded (hot-dip galvanized steel fins) 360 (680)
Extruded fins 300 (570)
Footed fins (single L) & overlap footed fins (double L) 130 (270)
Knurled footed fin, either single L or double L 200 (390)
Externally Bonded (welded or brazed fins) > 400 (750) (maximum should be negotiated)
Forced Draught Air Cooled Heat Exchanger API 661 Compliant for Petroleum Industry Applications
Tubes and Finning Construction

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Forced Draught Air Cooled Heat Exchanger

      

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