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

SPXreservestherighttoincorporateourlatestdesignandmaterialchangeswithoutnoticeorobligation.

Designfeatures,materialsofconstructionanddimensionaldata,asdescribedinthisbulletin,areprovidedforyourinformationonlyandshouldnotberelieduponunlessconfirmed

inwriting.Pleasecontactyourlocalsalesrepresentativeforproductavailabilityinyourregion.Formoreinformationvisitwww.spx.com.

Thegreen“>”isatrademarkofSPXCorporation,Inc.

ISSUED06/2012HOC

COPYRIGHT©2012SPXCorporation

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SPXFlowTechnology

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Canonsburg,PA15317-1700U.S.A.

www.deltech-spx.com

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P:(724)745-8647

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E:deltech.inquiry@spx.com

CANADA

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USA

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Canonsburg,PA15317-1700U.S.A.

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E:deltech.inquiry@spx.com

E M EA

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Globallocations

HOC Series 350 to 10000 scfm

(595 - 16990 nm3/h)