Name: API 661 Forced Draft Air Cooled Exchanger for Petroleum
Brand: YUHONG
Price: 2000 USD

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API 661 Forced Draft Air Cooled Exchanger for Petroleum

Categories	Air Cooled Heat Exchanger
Driver Type:	Forced Draught
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
Brand Name:	YUHONG
Payment Terms:	L/C,T/T

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YUHONG HOLDING GROUP CO., LTD

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API 661 Forced Draft Air Cooled Exchanger for Petroleum

Forced Draught Air Cooled Heat Exchanger with API 661, Petroleum Industry

Need a custom quote for Air Cooled Exchangers? Contact our engineering team directly: jimmy@steelseamlesspipe.com

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 and Induced Draught Air Cooled Heat Exchanger configurations

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.

Removable cover-plate header construction

A) Removable cover-plate header

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)

Tubes and Finning Construction

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API 661 Forced Draft Air Cooled Exchanger for Petroleum

API 661 Forced Draft Air Cooled Exchanger for Petroleum

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API 661 Forced Draft Air Cooled Exchanger for Petroleum