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{"title":"API 661 Forced Draft Air Cooled Exchanger Optimal Flow Cooling for Power Plant","imgUrl":"https:\/\/img.chinax.com\/nimg\/b3\/e0\/68ff56af4334eb56cdba3efa899a-200x200-1\/api_661_forced_draft_air_cooled_exchanger_optimal_flow_cooling_for_power_plant.jpg","attrs":{"Brand Name":"Yuhong","Model Number":"API 661","Certification":"U Stamp","Place of Origin":"China"}}
{"title":"API 661 Air Cooled Heat Exchanger Finned Tube Bundle for Hydrofinished Oil","imgUrl":"https:\/\/img.chinax.com\/nimg\/ff\/fd\/16fdb373e5017af1a67a7cbc71fe-200x200-1\/api_661_air_cooled_heat_exchanger_finned_tube_bundle_for_hydrofinished_oil_cooler.jpg","attrs":{"Tube sheet":"A516 GR.60","Tube size":"1inch x BWG 12 MW x 1000mm","Fin type":"extrudded","Plate":"A516 GR.60"}}
{"title":"Oil Refineries Air Cooling Heat Exchanger API 661, ASME SEC VIII Div-1","imgUrl":"https:\/\/img.chinax.com\/nimg\/a1\/70\/bac980e3b45626ce5a9e96571fc4-200x200-1\/oil_refineries_air_cooling_heat_exchanger_api_661_2c_asme_sec_viii_div_1.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"Air Cooler 915C","Certification":"ASME , U STAMP , PED, API , ABS, LR, DNV, GL , BV, KR, TS, CCS","Place of Origin":"China"}}
{"title":"API 661 Air Cooled Heat Exchanger Tube Bundle with Tubesheet for Petrochemical","imgUrl":"https:\/\/img.chinax.com\/nimg\/be\/d0\/4537aadb40d39969b9a15be624c3-200x200-1\/api_661_air_cooled_heat_exchanger_tube_bundle_with_tubesheet_for_petrochemical.jpg","attrs":{"Design pressure":"170\u2103","M.A.W.P":"3\/FV","Main parts":"SB127 UNS N04400","Brand Name":"Yuhong API Standard 6601 Air Cooled Heat Exchangers"}}
{"title":"Plug Type Industrial Air Cooled Heat Exchanger Petrochemical And Oil Refineries","imgUrl":"https:\/\/img.chinax.com\/nimg\/c8\/3f\/b3b0a84fbeabad3130887df1c0b5-200x200-1\/plug_type_industrial_air_cooled_heat_exchanger_petrochemical_and_oil_refineries_application.jpg","attrs":{"Air Cooler Standard":"API 661, ASME SEC VIII Div-1","Air Cooler Nozzle Material":"ASME SA105 6\" 150# ASME B16.5","Air Cooler Fin Type":"Embedd G Type : 0.4 X 15.875 X 3.17MM","Brand Name":"YUHONG"}}
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
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.
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)
