Heat of Compression Desiccant Air Dryers HOC SERIES 350 -10000 scfm (595 - 16990 nm 3 /h)
Heat of Compression Desiccant Air DryersHOC S E R I E S 350 -10000 scfm (595 - 16990 nm3/h)
Annual cost of operat ion based on:
• Air f low: 1000 scfm
• Cost o f power : $0.10 kWh
• Operat ing t ime: 8000 hours
Heated Purge Desiccant
$2,000
$6,000
$8,000
$10,000
$0
$4,000
$12,000
$14,000
$16,000
$18,000
Heat of Compression Desiccant
Non-Cycling Refrigerated
Blower Purge Desiccant
Heatless Desiccant
$35
$4,904
$11,568
$13,294
$16,712
Annual Cost of Operation
HOC Series
DeltechHOCSeriesheatofcompressiondesiccantairdryersprovideacosteffectivesolutiontoremovemoisturefromcompressedair.
Thesustainableenergysavingdesignreducesoperatingcostsanddeliversinstrumentqualityair.
Thermalenergygeneratedduringtheaircompressionprocessiseffectivelyutilizedtoregeneratetheoff-linedesiccantbed.Ideallysuited
foroil-freeaircompressors,HOCSeriesdryersturn“wasteheat”intoenergysavings.
WhereIdeasMeetIndustry
Advantages:
• DeliversISO8573.1:2010AirQualityClass2to4pressuredewpoint(-40ºFto+37ºF),dependentonaircompressordischarge
temperature
• Lowcostofoperationandrapidreturnoninvestment
• Desiccantintheoff-linetowerisregeneratedwithouttheuseofpurgeair,requiringnoincreaseinaircompressorcapacity
• Lowoutletpressuredewpoints
• Fullypackaged,skidmounteddesign
Reduce Life Cycle Costs
TheHOCconsumesunder50watts,lessthanthepowerrequirement
ofatypicallap-topcomputer.
Theenergyefficientdesignoffersthelowestcostofoperationas
comparedtoconventionaldehydrationtechnology.
BetterByDesign
Standard Features:
• PressurevesselsaredesignedinaccordancewiththeASME
BoilerandPressureVesselCodeSectionVIIIDivision1
• ASMEratedpressurereliefvalvescontrolpressurebuild-updue
toprocessupset
• Expandedmetalpersonnelprotectionandhotpipeinsulation
providesaddedsafetymeasures
• NEMA4/4X,IP66ratedcontroller,polycarbonateenclosurefor
protectionincorrosiveenvironments
• Flowmodels350to450scfmemployangleseatvalvesfor
reliableoperation
• Flowmodels600to10000scfmutilizenon-lubricated,high
performancebutterflyvalves
• Frontpanelisequippedwithleftandrighttowerpressure
gaugesandmoistureindicatorfor“ataglance”performance
• Towersarefilledwithhighgradedesiccantmaintainingoptimal
performanceunderhightemperatures
• 316AISIstainlesssteel,brazedplateheatexchangerprovides
efficientcoolingandcorrosionresistance
• Fullyinsulatedfilter/separatorremovesbulkliquidsandsolid
particlesgreaterthan3.0microninsize
• Anelectricdemanddrainservesastheprimarydrain,efficiently
removingcondensatewithoutlossofair
• Atimedelectricdrainactsasback-up,providingfailsafe
operation
• Factorymountedhightemperatureafter-filter,ratedfor450°F,
removessolidparticles1.0micronandlarger
Options:
• Towerinsulation
• Moisturesensingdewpointdemandcontrolwithalarm
• Valvefailuretoshiftalarm
Front View: Model HOC1025
Back View: Model HOC1025
3
Hot Air Inlet
1
Dry Air Outlet
8
RegeneratingTower
2
Drying Tower
6
Water-CooledHeat Exchanger
3
Moisture Separator
4
Demand Drain
5
After-filter
7
How the HOC Series Works:
1. Hotoil-freeair,generatedbytheaircompressor,
isdirectedintothedryerbyahighperformance
switchingvalve.
2. Thehotairflowsdownwardthroughtheoff-line
tower,effectivelyregeneratingthedesiccantbed.
3. Hot,moistairthentravelstothewater-cooledheat
exchanger.Thecoolingwaterrunscounter-flow
tothehotaircausingwatervaporintheairto
condense.
4. Condensedliquidisremovedinahigh
performance,two-stagefilter/separator.Bulk
liquidandsolidparticles3.0micronandlargerare
captured.
5. Condensateisdischargedbyanenergyefficient,
no-air-lossdemanddrain.Thesystemisequipped
withaback-updrainprovidingfailsafeoperation.
6. Thepre-cooledairflowsupwardthroughtheon-
linetowerandisdriedtothespecifiedpressure
dewpoint.
7. Airtravelsthroughahightemperatureafter-filter
removingsolidparticles1.0micronandlarger.Dry,
oil-freeairentersthesystemforuse.
8. Thecycleisreversedbasedonaonehourfixed
time(30minutesregenerating/30minutesdrying),
oronanextendedcycle.Thecycleisextended
basedontheregeneratingtowertemperatureor
optionalpressuredewpoint.
PuttingWasteHeattoGoodUse
5
230°F
260°F
290°F
320°F
350°F
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
55 60 65 70 75 80 85 90 95 100 105
Out
let P
ress
ure
Dew
Poi
nt (
°F)
Cooling Water Temperature (°F)
3 2
1
Pressure Dew Point Performance
How to use the Dew Point Performance Chart:
1. LocatethecoolingwatertemperatureontheX-axis. Note : In le t temperature to dry ing tower equals cool ing water
temperature p lus 10ºF.
2. Proceedverticallyupthegraphlinetowherethecoolingwater
temperatureandcompressordischargetemperatureintersect.
3. Fromthiscoordinate,advancelaterallyacrossthegraphlineto
theY-axistodeterminepressuredewpoint(°F).
UnderstandingDewPointPerformance
The Effect of Regeneration Temperature
TheHOCutilizesrecoverableheatenergyfromtheaircompressor
toregeneratetheoff-linebed.
• Higherinletairtemperaturesimproveregenerationefficiency,
deliveringlowerpressuredewpoints.
• Coolerinletairtemperaturesdecreaseregenerationefficiency,
deliveringhigherpressuredewpoints.
The Air Compression Process
Siteconditionsareimportantwhenunderstandingdewpoint
performanceofheatofcompressionairdryers.TheHOC
flowratingsarebasedonanambientairtemperatureof85ºF
(29ºC)and60%relativehumidity.Whencompressedto100
psig(7bar)andheatedto350ºF(160ºC),theairleavingthe
compressorwillpossessarelativehumidityof3%.Thedry,hot
dischargeaireffectivelyregeneratestheoff-linedesiccantbed.
Example:
1. Coolingwatertemperature=85ºF
2. Compressordischargetemperature=350ºF
3. Resultingpressuredewpoint=-33ºF
Thechartabovedemonstratestheeffectofcoolingwatertemperature&compressordischargetemperaturestopressuredewpoint.
Performance Basis:
• Operat ing Pressure: 100 ps ig (7 bar )
• Ambient A i r Temperature : 85°F (29ºC)
• Ambient Re la t i ve Humid i ty : 60%
• Ambient Dew Point : 70ºF (21ºC)
LT HEAT (1)RT DRYING
EaseofMonitoring
TheHOCcontrollerisfurnishedwithacomprehensivediagnosticsystemthatprovidesreal-timeoperatingstatus,serviceduemessages
andfaultconditions.Informationiscommunicatedinahighlyvisible,two(2)line—sixteen(16)charactervacuumflorescenttextdisplay
screen.ThecontrollerisequippedwithanRS232communicationsportandModbusregistersforremotemonitoring
Status Text Display Screens
• Towerdrying(left/right)
• Towerregenerating(left/right)
• Hourstoservice(filters/valves/desiccant)
• Inletairtemperature(°F/°C)
• Outletairtemperature(°F/°C)
• Lefttowertemperature(°F/°C)
• Righttowertemperature(°F/°C)
Dryer Alarm Text Display Screens
• Demanddrainfailure
• Lowinletairtemperature(°F/°C)
• Highdryingtemperature(ºF/ºC)
• Servicedue(filters/valves/desiccant)
• Temperaturesensorfailure
Optional :
• Outletpressuredewpointalarm(ºF/ºC)
• Valvepositionsensing-alarmsonfailuretoshift
Indicating Lights (LE D)
• Towerstatus(drying/regenerating)
• Poweron(green)
• Masteralarmlight(red)
• Servicedue(amber)
Panel Mounted Instrumentation
• Leftandrighttowerpressuregauges
• Colorchangemoistureindicator
Optional Dew Point Demand Control System
Adewpointdemandcontrolsystemautomaticallyextendsthe
dryingcycletocompensateforchangesinoperatingconditions.
Bysamplingexitairfromthedryingtower,theDemandControl
Systemdelaystowerswitchoveruntilthemoisturecontentatthe
sampleportrisestothepredeterminedsetpoint.
7
ProductSpecifications
Dryer Model Rated Dimensions Approximate Inlet/Outlet CoolingFlow Weight Connections Water
(1) H W D Flow
scfm nm3/h in mm in mm in mm lb kg in G PM @ 85°F
HOC350 350 560 96 2438 54 1372 43 1092 1794 814 2 x 3” NPT 8.7
HOC450 450 720 96 2438 56 1422 43 1092 1794 814 2 x 3” NPT 11.0
HOC600 600 960 105 2667 63 1600 50 1270 2294 1041 3” FLG x 3” NPT 15.0
HOC800 800 1280 105 2667 63 1600 50 1270 2518 1142 3” FLG x 3” NPT 20.0
HOC1025 1025 1640 108 2743 65 1651 48 1219 2818 1278 3” FLG x 3” NPT 26.0
HOC1300 1300 2080 115 2921 71 1803 62 1575 3438 1559 4” FLG 32.0
HOC1500 1500 2400 114 2896 77 1956 62 1575 4038 1832 4” FLG 37.0
HOC1800 1800 2880 119 3023 79 2007 62 1575 4538 2058 4” FLG 45.0
HOC2100 2100 3360 114 2896 87 2210 62 1575 5572 2527 4” FLG 52.0
HOC2400 2400 3840 116 2946 89 2261 67 1702 6472 2936 4” FLG 60.0
HOC3250 3250 5200 134 3404 99 2515 68 1727 7878 3573 6” FLG 81.0
HOC3700 3700 5920 126 3200 98 2489 85 2159 9638 4372 6” FLG 92.0
HOC4425 4425 7080
Consult Factory
HOC5000 5000 8000
HOC6100 6100 9760
HOC7500 7500 12000
HOC8500 8500 13600
HOC10000 10000 16000
1 F low ra t ings based on 100 ps ig opera t ing pressure; 85°F cool ing water ; 95°F a i r temperature in to dry ing tower.2 Shipp ing weight inc ludes fac tory mounted 1 .0 micron a f te r- f i l te r.
Correction Factors
Flow Multiplier for Dryer Selection
Inlet Temperature
to Drying Tower*
ºF ( ºC)
85ºF 90ºF 95ºF 100ºF 105ºF 110ºF
(29ºC) (32ºC) (35ºC) (38ºC) (41ºC) (43ºC)
Pressure
psig
(bar)
60 (4) 1.2 1.4 1.7 2.0 2.3 2.8
70 (5) 1.0 1.2 1.4 1.7 2.0 2.4
80 (6) 0.9 1.1 1.3 1.5 1.7 2.1
90 (6) 0.9 1.1 1.3 1.6 1.8
100 (7) 0.8 1.0 1.2 1.4 1.7
110 (8) 0.9 1.1 1.3 1.5
120 (8) 0.8 1.0 1.2 1.4
130 (9) 0.8 0.9 1.1 1.3
140 (10) 0.7 0.8 1.0 1.2
Operating Condit ions Minimum Design Maximum
Regeneration Temperature 200°F Customer specific 450°F
Inlet Air Pressure 60 psig 100 psig 150 psig
Ambient Air Temperature 40°F 85°F 120°F
Ambient Relat ive Humidity — 60°F —
Inlet Air Temperature (drying) 50°F 95°F 120°F
Cooling Water Temperature 40°F 85°F 110°F
ISO 8573-1 : 2010 Air Quality Classes
Air Qual i ty
Class
Solid Part icles Water OilMaximum number of
part icles per m3
Vapor Pressure
Dew Point
Total Oi l Concentrat ion:
Aerosol , L iquid & Vapor
0.10 - 0 .5
micron
0.5 - 1 .0
micron
1.0 - 5 .0
micron°C °F mg / m3 ppm w/w
0 As specif ied by the equipment user or suppl ier and more str ingent than class 1
1 O 20,000 O 400 O 10 O -70 O -94 0.01 0.008
2 O 400,000 O 6,000 O 100 O -40 O -40 0.1 0.08
3 - O 90,000 O 1,000 O -20 O -4 1 0.8
4 - - O 10,000 O +3 O +37 5 4
5 - - O 100,000 O +7 O +45 - -
I SO Quali ty Class Performance: HCD with HTA Series After-Fi l ter
• Class 2: So l ids
• Class 2-4: Pressure Dew Point* In le t temperature to dry ing tower =
cool ing water temperature +10ºF
Based in Charlotte, North Carolina, SPX Corporation (NYSE: SPW) is a global Fortune 500 multi-industry manufacturing leader.
For more information, please visit www.spx.com
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Designfeatures,materialsofconstructionanddimensionaldata,asdescribedinthisbulletin,areprovidedforyourinformationonlyandshouldnotberelieduponunlessconfirmed
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ISSUED06/2012HOC
COPYRIGHT©2012SPXCorporation
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Globallocations
HOC Series 350 to 10000 scfm
(595 - 16990 nm3/h)