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TRANSCRIPT
AIR-COOLED HEAT EXCHANGER(ACHE) LAYOUT
By VIPIN.S PIPING-MATERIALS TECHNIP INDIA 19TH JAN 2007
AIR-COOLED HEAT EXCHANGER LAYOUT
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INTRODUCTION:
WHAT IS AN AIR COOLED HEAT EXCHANGER(ACHE)? API 661 AIR COOLED HEAT EXCHANGER FOR GENERAL REFINERY SERVICECONSTRUCTIONAL DETAILS ONE OR MORE BUNDLES OF HEAT TRANSFER SURFACES AIR MOVING DEVICE-FAN,BLOWER POWER TRANSMISSION DEVICE TO MECHANICALLY ROTATE FAN,BLOWER A PLENUM BETWEEN BUNDLES AND FAN
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TYPES OF ACHEINDUCED DRAFT FORCED DRAFT A- FRAME CONFIGURATION
AIRCOOLERS IN DIFFERENT PLOTPLAN WE HAVE COME ACROSS AIR COOLERS ON FOLLOWING PROJECTSGONFREVILLE KHARGH ETHYLENE QATAR GAS-II ( BOTH IN INLET AREA AND UTILITY AREAS) RASGAS-III ( UTILITY AREA) QCS (INLET AND UTILITY AREAS) YLNG (COMPRESSOR AREA-UNIT47) KHURSANIA PROJECT
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AIRCOOLERS IN DIFFERENT PLOTPLAN
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AIR-COOLED HEAT EXCHANGER LAYOUT LAYOUT REQUIRMENTS OF AIR COOLED HEAT EXCHANGER (ACHE)AREA OF LOCATION FOR ACHE: 1. ON TOP OF MAIN PIPE RACK
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MOST COMMON LOCATION PIPE RACK SPACING TO BE SPECIFIED WHEN SENDING ENQUIRIES FOR COOLERS CLIENT APPROVAL REQUIRED FOR LOCATING ACHE ON TOP OF RACK
2. ON A SEPARATE ELEVATED STRUCTURE
MUST BE POPERLY ELEVATED TO FACILITATE GRAVITY FEED SYSTEM
AIR-COOLED HEAT EXCHANGER LAYOUTPROVIDE ROOM FOR CRANE ACCESS FOR MAINTENANCE
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AIR-COOLED HEAT EXCHANGER LAYOUTACCESS PLATFORMS ON EITHER SIDE TO ACCESS HEADER BOX CHECK FOR THE ROOM CLEARENCES OVER ACCESS PLATFORMS
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AIR-COOLED HEAT EXCHANGER LAYOUTIN GENERAL AVOID LOCATING PUMPS, PRV, AND CONTROL VALVES BELOW ACHE VIBRATIONAL REQUIRMENTS HAS TO BE CONSIDERED WHILE DESIGNING THERMAL MOVEMENT FOR LAYOUT CONSIDERATION SHALL BE FURNISHED BY THE VENDOR. CHECK FOR THE NO. OF PASSES NO. OF BUNDLES NEEDS TO BE KNOWN FOR KNOWING THE NO.OF NOZZLE AVAILABLE.
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AIR-COOLED HEAT EXCHANGER LAYOUT PIPING LAYOUT REQUIRMENTSCORRECT CONFIGURATION OF PIPING TO GIVE EQUAL OR NEAR EQUAL DISTRIBUTION
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PIPING FROM OVERHEAD AS SHORT AS POSSIBLE TO MINIMIZE PRESSURE DROP
ROUTING SHOULD BE FLEXIBLE TO AVOID OVERLOADING OF NOZZLES
PROVIDING SUITABLE PIPE SUPPORTS AND ANCHORS
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PIPING CONFIGURATIONS CASCADE AND SYMMETRICAL RAKE SHOWS GOOD DISTRIBUTION ASYMMETRICAL RAKE SHOWS BAD DISTRIBUTION
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ROUTE LINE IN ECONOMICAL PATH. CHECK FOR ACCESSIBILITY OF VALVES CHECK FOR FLEXIBILITY ( GENERALY DONE IN DETAILED STAGE) SUPPORTING CRITERIA SHALL GE CHECKED ( GENERALY DONE IN DETAILED STAGE)
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TOWER TO COOLER PIPING
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SIDE MOUNTED INLET HEADER MIN INLET PIPE RUN LESS FLEXIBLE
CENTRALLY MOUNTED INLET HEADER LONG INLET PIPE RUN MORE FLEXIBLE
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SYMMETRICAL RAKE ARRANGMENT
AIR COOLER ARRANGMENT IN
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UNIFORM DISTRIBUTION
LINE SUFFICIENTLY FLEXIBLE MIN. PIPE RUN FOR INLET LINES LINES ARE NOT OBSTRUCTING MAINTENANCE ACCESS
AIR COOLER ARRANGMENT IN
AIR-COOLED HEAT EXCHANGER LAYOUTCASCADE ARRANGMENT
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AIR COOLER ARRANGMENT IN KHURSANIA PROJECT
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MINIMUM INLET PIPE RUN NO INDIVIDUAL ISOLATION VALVES AIR COOLER ARRANGMENT IN KHURSANIA PROJECT
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AIR COOLER ARRANGMENT IN KHURSANIA PROJECT
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AIR-COOLED HEAT EXCHANGER LAYOUT
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