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Regular maintenance and inspection of Air Cooler systems include
The performance and reliability of ACHE depend on proper inspection and maintenance of components. The fins for all the air cooler tubes shall be of the extruded type with 394 fins per meter Maintenance and Inspection of Air-Cooled Heat exchangers
Tubes shall be provided with aluminum fins. Bolted joints (stud construction or flanged construction) shall be designed with confined gaskets. Removable cover plate type headers shall be utilized in auxiliary utility services such as lube oil hot oil, cooling circuit. Plug-type headers shall be used for all air coolers in hydrocarbon gas or liquid service. The removable Bonnet type Header Shall not be used. Shell DEP 31.21.70.31 SHELL DEP special requirement for air-cooled exchangers:. #Download Air Cooler And Heater Manual free iso#
API 661 / ISO 13076 ( Air-cooled heat exchangers for general refinery service ). The following codes and standards govern the design of air fin fan coolers. 12: Air Cooled Heat Exchanger with internal recirculation Codes and Standards for air-cooled exchanger Design Table: Difference between Induced Draft and Forced draft Air Coolersįig. Reduced Structural costs and improved mechanical life. 8 Bundle Maintenance Access Plenums must be removed to replace bundles Better accessibility of bundles for replacement 9 Structural Cost Increased structural cost and lower mechanical life. Possibly lower horsepower requirements if the effluent air is very hot 6 Temperature Limitation Effluent air temperature should be limited to 220☏ to prevent damage to fan blades, bearings, or other mechanical equipment in the hot air stream Accommodates higher process inlet temperatures 7 Fan Maintenance Access Fans are less accessible for maintenance Better accessibility of fans and upper bearingsįor maintenance. Less Process Control 4 Fan Failure Increased capacity in the fan failure Low natural draft capability of fan failure 5 Horsepower Requirement Possibly higher horsepower requirements if the effluent air is very hot. The plenum covers 60% of the bundle face area which reduces the effects of sun, rain, and hail. 2 Air Re-circulation Less possibility of hot effluent air recirculating into the intake Increased possibility of hot air recirculation 3 Process Control and Stability Better process control and stability. Less uniform distribution of air over the bundle. No Parameter Induced Draft Air Cooler Forced Draft Air Cooler 1 Air Distribution Better distribution of air across the bundle. In addition to the above, The major differences between an Induced Draft and a Forced Draft Air Cooled Heat exchanger are listed below with respect to some design parameters: 
If the fan is exposed to very hot exhaust air since forced draft coolers do not have the fans exposed to hot exhaust air. If the process fluid is very hot, the cooling air is hot at the outlet, this could cause problems with some fans or fan actuators.
Since the fan is moving a lower volume of air at the inlet than it would at the outlet. Forced draft units require slightly less horsepower. The fan shaft is short since it does not have to extend from the drive unit through the tube bundle and plenum to the fan as in an induced draft design. The tube bundle is mounted on top of the plenum, so it can be easily removed & replaced. Forced draft units are easier to manufacture and maintain. Mostly air-cooled heat exchangers are of forced draft construction. 10: common air cooled heat exchanger header types Why some coolers are forced-draft & some induced drafts (Fig. PROOF OF PURCHASE To receive warranty retain receipt as proof of purchase. It will take a few minutes clean cold water into the water filler area, for the air to cool. To initiate the cooling function depress drainage outlet of the unit is tight. The greatest cooling effect will be felt if the unit is operated in a partly opened doorway or window with the “cool” conditioned air directed into the room to be cooled. Operating your Fan For best operating performance position the unit in a location that will create a “flow through” air effect. 
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Preview Amcor Electric Heater Air Cooler & Heater AC 706 AM User's Manual| Online and Download PDF Manuals & Instructions for FREE from. View and Download Koldfront WTC12000W owner's manual online. This Goldair appliance has been designed and manufactured to high standards of engineering and with proper use and care, as described in this leaflet, will give you years of useful service. General Care and Safety Guide Thank you for choosing this Goldair product.Operating Instructions 10L Evaporative Cooler with Timer a 3V CR2032 battery.
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