vxt- open type cooling tower
TRANSCRIPT
VXT - B 1
VXT
Open Cooling TowersOpen C
ooling Towers
Product DetailVXT Open Cooling Tower ........................................................................ B2
Benefits ....................................................................................................... B4
Construction Details .................................................................................. B6
Custom Features and Options .................................................................. B8
Accessories ............................................................................................... B10
Engineering Data ..................................................................................... B12
Structural Support .................................................................................. B19
Engineering Specifications ..................................................................... B22
VXT - B 2
VX
T
VXT Open Cooling TowerCapacitySingle Cell Capacity:From 1,6 l/s to 1230 l/s
General DescriptionOpen Circuit Cooling Towers with centrifugal fans, deliver fully rated thermal performance over a wide range of flow and temperature requirements. This type of cooling towers can be installed indoors and can accommodate limited ceiling or enclosure heights. Cooling towers with centrifugal fans minimise sound levels and installation costs, provide year round operating reliability, and simplify maintenance requirements.
Cooling Towers provide an answer to the growing need to save water and energy and help protect the environment by providing the highest system efficiency.
Key FeaturesSuitable for indoor and outdoor installations
Suitable for high temperature applications
Low sound
Single side air inlet
Low energy consumption
Low installed cost
Easy maintenance
Reliable year-round operation
Long service life
Baltimore Aircoil
VXT - B 3
Open C
ooling Towers
... because temperature matters
VXT - B 4
VX
T
BenefitsInstallation and Application FlexibilityIndoor Installations – Centrifugal fans can overcome the static pressure imposed by external ductwork, allowing this type of cooling towers to be installed indoors.High Temperature Applications – A range of wet deck and construction options are available to accommodate entering water temperatures of up to 65°C.
Low SoundCentrifugal Fan - Centrifugal fans have inherently low sound characteristics.
Single Side Air Inlet - Particularly sound-sensitive areas can be accommodated by facing the quiet side (back panel) to the sound-sensitive direction.
Low Energy ConsumptionEvaporative Cooling Equipment minimizes the energy consumption of the entire system because it provides lower operating temperatures. The owner saves money while conserving natural resources and reducing environmental impact.
Low Installed CostSupport – All models mount directly on two parallel I-beams (supplied by others) and ship complete with motors and drives, factory-installed and aligned.Modular Design – Large models ship in multiple sections to minimize the size and weight of the heaviest lift, allowing for the use of smaller, less costly cranes.
Easy MaintenanceInternal Access - The interior of the unit is easily accessible for adjusting the float valve, cleaning the strainer or flushing the basin.
Reliable Year-Round OperationV-Belt Drive – The fans, motor, and drive system are located outside of the moist discharge airstream, protecting them from moisture, condensation and icing hence allowing a safe year-round operation.
The water level control is easily reached from the access door.
External V-belt drive system (shown here with panel removed)
Baltimore Aircoil
VXT - B 5
Open C
ooling Towers
Long Service LifeMaterials of Construction – Various materials are available to meet the corrosion resistance, unit operating life, and budgetary requirements of any project.
Note: For more information, please refer to the section “Technical Resources, Materials of Construction”.
Low Ocean Freight CostSize - C models are designed to fit in standard closed box containers to minimize ocean freight costs. All containerized models are shipped in a bottom fan section and a top coil section, which fit together into a 40' box container, no crating required.In order to fit the bottom fan section through the doors of the container, the fan enclosures are shipped loose inside the water basin area and are easily mounted on site.
C Model in Dry Van Container Fan Enclosures are shipped loose
... because temperature matters
VXT - B 6
VX
T
Construction DetailsUpper Section
Lower Section
Baltimore Aircoil
VXT - B 7
Open C
ooling Towers
1. Heavy Duty ConstructionZ600 hot-dip galvanized steel panels
2. Fan Drive SystemV-belt drive
Heavy-duty bearings and fan motor
3. Centrifugal Fan(s)Quiet Operation
4. Water Distribution SystemPlastic spray header and branches
Large orifice, non-clog nozzles
Grommetted for easy maintenance
5. BACount Wet Deck SurfacePlastic material
Impervious to rot, decay and biological attack
Self extinguishing
High temperature wet deck option
6. StrainerAnti-vortex design to prevent air entrainment
7. Access DoorCircular access door
8. Drift EliminatorsUV resistant non-corrosive material, impervious to rot, decay and biological attack
Three distinct changes in air direction to reduce drift loss significantly
Assembled in easy to handle sections, which can be removed for access to the equipment interior
... because temperature matters
VXT - B 8
VX
T
Custom Features and OptionsConstruction OptionsStandard Construction:Steel panels and structural elements are constructed of Z600 heavy-gauge hot-dip galvanized steel protected with the Baltiplus Corrosion Protection on the outside of the unit.
Optional BALTIBOND® Corrosion Protection System:The BALTIBOND®
Corrosion Protection System, a hybrid polymer coating used to extend equipment life, is applied before assembly to all hot-dip galvanized steel components of the unit.
Optional Stainless Steel Construction:Steel panels and structural elements are constructed of stainless steel either type 304 or 316.
Optional Water-Contact Stainless Steel Cold Water Basin:A cost-effective alternative to an all stainless steel unit. The critical components in the cold water basin and the cold water basin itself are provided in stainless steel. The remaining components are protected with the BALTIBOND®
Corrosion Protection System.
Note: See section Technical Resources, Material of Construction for more details on the materials described above.
Fan Drive SystemThe fan drive system provides the cooling air necessary to reject heat from the system to the atmosphere. Centrifugal fans, forwardly curved, are driven by matched V-belts with taper lock sheaves.
The Baltiguard® Drive SystemThe BALTIGUARD® Drive System consists of two standard single-speed fan motors and drive assemblies. One drive assembly is sized for full speed and load, and the other is sized for approximately 2/3 speed and consumes only 1/3 of the design kilowatt power. This configuration allows the system to be operated like a two-speed motor, but with the reserve capacity of a standby motor in the event of failure. As a minimum, approximately 70% capacity will be available from the low kilowatt motor, even on a design wet-bulb day. Controls and wiring are the same, as those required for a two-speed, two-winding motor. Significant energy savings are achieved when operating at low speed during periods of reduced load and/or low wet-bulb temperatures.
Unit with Stainless Steel Option
Baltiguard® Drive System
Baltimore Aircoil
VXT - B 9
Open C
ooling Towers
Low Sound OperationThe low sound levels generated by BAC Products with centrifugal fans make them suitable for most installations. For situations when one direction is particularly sound sensitive, the unit can be oriented so that the side opposite the air inlet faces the sound-sensitive direction. Units with centrifugal fans are also available with factory designed, tested and rated sound attenuation for both the air inlet and discharge.
Note: For more information, please refer to the section “TechnicalResources, Sound Reduction Options”.
Remote Sump ExecutionThe use of an auxiliary sump within a heated space is the most satisfactory way to protect sump water from freezing. When the circulating pump is shut off, all the water in the water distribution, in suspension and in the sump will drain freely to the auxiliary sump.
Note: For detailed information on the calculation of the remote sump tank, please refer to the section "Technical Resources, Selection ofRemote Sump Tank".
High Temperature Wet DeckIf operation above 55°C is anticipated, an optional high temperature wet deck material is available which increases the maximum allowable entering water temperature to 65°C.
Units with Intake and Discharge Sound Attenuation
... because temperature matters
VXT - B 10
VX
T
AccessoriesLadder, Safety Cage and HandrailsIn the event the owner requires easy access to the top of the unit, the unit can be furnished with ladders extending from the base of the unit to the top, as well as safety cages, and handrail packages.Note: When these access options are employed, the unit must beequipped with steel drift eliminators.
Basin HeatersUnits exposed to below freezing ambient temperatures require protection to prevent freezing of the water in the cold water basin when the unit is idle. Factory-installed heaters, which maintain the water temperature at 4°C, are a simple and inexpensive way of providing such protection. The heater package includes the heaters, a thermostat and a low level cut out switch to protect the heaters if the water level is too low. Standard electric heaters are selected for -18°C ambient temperature.
Model No.VXT
Heater -18 °C(kW)
VXT 10-25 1 x 1,5
VXT 30-55 1 x 1,5
VXT 65-85 1 x 2,5
VXT 95-135 1 x 3
VXT 150-185 1 x 4
VXT N215-N265 1 x 6
VXT N310-N395 2 x 4
VXT N430-N535 2 x 6
VXT C215-C265 1 x 6
VXT C310-C395 2 x 4
VXT C430-C535 2 x 6
VXT S220-S320 1 x 6
VXT S345-S470 2 x 4
VXT S530-S640 2 x 6
VXT S690-S940 4 x 4
VXT 315-400 1 x 6
VXT 470-600 2 x 5
VXT 630-800 2 x 6
VXT 870-1200 4 x 5
Ladder and Safety Cage, Handrails around top of unit
Baltimore Aircoil
VXT - B 11
Open C
ooling Towers
Electric Water Level Control PackageThe electric water level control replaces the standard mechanical make-up valve when a more precise water level control is required. This package consists of a float switch mounted in the basin and a solenoid activated valve in the make-up water line. The valve is slow closing to minimize water hammer.
Extended Lubrication LinesExtended lubrication lines with grease fittings are available for lubrication of the fan shaft bearings.
Capacity Control DampersModulating capacity control dampers are available to provide better leaving water temperature control than can be obtained from fan cycling alone. Fan discharge dampers consist of a single airfoil type damper blade located in the discharge of each fan housing. A standard electrical control package for dampers is available from BAC.
Solid Bottom PanelsFactory-installed bottom panels are required when intake air is ducted to the unit.
Discharge HoodsDischarge hoods reduce the risk of re-circulation in tight enclosures by increasing discharge air velocity, and can be used to elevate the unit discharge above adjacent walls to comply with layout guidelines.
Basin Sweeper PipingBasin sweeper piping provides an effective method of preventing sediment from collecting in the cold water basin of the unit. A complete piping system, including nozzles, is provided in the unit basin for connection to side stream filtration equipment.
Note: For more information, please refer to the section "TechnicalResources, Filtration".
Electric Water Level Control Package
Extended Lubrication Lines
Basin Sweeper Piping
... because temperature matters
VXT - B 12
VX
T
Engineering DataREMARK: Do not use for construction. Refer to factory certified dimensions & weights. This brochure includes datacurrent at time of publication, which should be reconfirmed at the time of purchase. In the interest of productimprovement, specifications, weights and dimensions are subject to change without notice. Up-to-date engineeringdata and more can be found at www.BaltimoreAircoil.com.VXT 10 - 185
On models VXT-10 to VXT-135 sufficient space must be provided on the back of the unit for entry to access doors located on side opposite air entry side.
* Units ship in one piece, ** Casing is heaviest section
ModelVXT
Operating Weight
(kg)
Shipping Weight
(kg)
HeaviestSection
(kg)H
(mm)L
(mm)W
(mm)Air Flow
(m3/s)Fan Motor
(kW)Fluid InletND (mm)
Fluid OutletND (mm)
Make UpND (mm)
VXT 010VXT 015VXT 020VXT 025
405410425435
325330350360
325*330*350*360*
2036203620362036
914914914914
1207120712071207
1,791,942,192,50
(1x) 0,75(1x) 1,1(1x) 1,5(1x) 2,2
(1x) 80(1x) 80(1x) 80(1x) 80
(1x) 80(1x) 80(1x) 80(1x) 80
25252525
VXT 030VXT 040VXT 045VXT 055
655685695780
490520530615
490*520*530*440
2036203620362506
1829182918291829
1207120712071207
3,744,484,975,16
(1x) 1,5(1x) 2,2(1x) 4,0(1x) 5,5
(1x) 80(1x) 80(1x) 80(1x) 80
(1x) 80(1x) 80(1x) 80(1x) 80
25252525
VXT 065VXT 070VXT 075VXT 085
1050107511351140
715740805810
715*740*540540
2036222025062506
2737273727372737
1207120712071207
7,228,128,028,83
(1x) 5,5(1x) 5,5(1x) 5,5(1x) 7,5
(1x) 100(1x) 100(1x) 100(1x) 100
(1x) 100(1x) 100(1x) 100(1x) 100
25252525
VXT 095VXT 105VXT 120VXT 135
1255144514751665
890108011101300
890*575605700
2036267526753350
3658365836583658
1207120712071207
11,0410,9012,5812,46
(1x) 7,5(1x) 7,5(1x) 11(1x) 11
(1x) 100(1x) 100(1x) 100(1x) 100
(1x) 100(1x) 100(1x) 100(1x) 100
25252525
VXT 150VXT 165VXT 185
221523602565
159017401940
915915
980**
312835854042
364536453645
143814381438
15,7915,5316,94
(1x) 15(1x) 15
(1x) 18,5
(1x) 150(1x) 150(1x) 150
(1x) 150(1x) 150(1x) 150
252525
1. Drain ND 50; 2. Water Outlet; 3. Overflow ND50 (Overflow VXT 150 – 185: ND80); 4. Make Up ND25; 5.Water Inlet; 6.Access Door.
Baltimore Aircoil
VXT - B 13
Open C
ooling Towers
VXT N215 - N535
ModelVXT
Operating Weight
(kg)
Shipping Weight
(kg)
Heaviest Section
(kg)H
(mm)L
(mm)W
(mm)Air Flow
(m3/s)Fan Motor
(kW)Fluid InletND (mm)
Fluid OutletND (mm)
Make UpND (mm)
VXT N215VXT N240VXT N265
364038504080
210023102540
139513951435
311235694026
355035503550
239723972397
23,4923,3324,26
(1x) 22(1x) 22(1x) 30
(1x) 150(1x) 150(1x) 150
(1x) 200(1x) 200(1x) 200
505050
VXT N310VXT N345VXT N370VXT N395
5300558058605890
3060334036203650
1875187518751895
3112356940264026
5385538553855385
2397239723972397
34,1233,8233,6036,15
(1x) 30(1x) 30(1x) 30(1x) 37
(1x) 200(1x) 200(1x) 200(1x) 200
(1x) 200(1x) 200(1x) 200(1x) 200
50505050
VXT N430VXT N480VXT N510VXT N535
7330773081108200
4190459049805060
2758275827582839
3112356940264026
7226722672267226
2397239723972397
46,9846,6546,4448,94
(2x) 22(2x) 22(2x) 22(2x) 30
(2x) 150(2x) 150(2x) 150(2x) 150
(1x) 250(1x) 250(1x) 250(1x) 250
50505050
1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5.Water Inlet; 6.Access Door.
... because temperature matters
VXT - B 14
VX
T
VXT C215 - C535ModelVXT-C
OperatingWeight
(kg)
ShippingWeight
(kg)
HeaviestSection
(kg)H
(mm)L
(mm)W
(mm)Air Flow
(m3/s)Fan Motor
(kW)Fluid InletND (mm)
Fluid OutletND (mm)
Make UpND (mm)
VXT C215VXT C240VXT C265
403542254420
233525352750
162016201645
311235694026
355035503550
224522452245
23,4923,3324,26
(1x) 22(1x) 22(1x) 30
(1x) 150(1x) 150(1x) 150
(1x) 200(1x) 200(1x) 200
505050
VXT C310VXT C345VXT C370VXT C395
5960623064906615
3435372540104090
2260226022602345
3112356940264026
5385538553855385
2245224522452245
34,1233,8233,6036,15
(1x) 30(1x) 30(1x) 30(1x) 37
(1x) 200(1x) 200(1x) 200(1x) 200
(1x) 200(1x) 200(1x) 200(1x) 200
50505050
VXT C430VXT C480VXT C510VXT C535
8120852089008980
4650505054805560
1620162016201645
3112356940264026
7226722672267226
2245224522452245
46,9846,6546,4448,94
(2x) 22(2x) 22(2x) 22(2x) 30
(2x) 150(2x) 150(2x) 150(2x) 150
(1x) 250(1x) 250(1x) 250(1x) 250
50505050
1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5. Water Inlet; 6. Access Door
Baltimore Aircoil
VXT - B 15
Open C
ooling Towers
VXT S220 - S940
ModelVXT-S
OperatingWeight
(kg)
ShippingWeight
(kg)
HeaviestSection
(kg)H
(mm)L
(mm)W
(mm)Air Flow
(m3/s)Fan Motor
(kW)Fluid InletND (mm)
Fluid OutletND (mm)
Make UpND (mm)
VXT S220VXT S240VXT S265VXT S300VXT S320
41204140417044004760
23802400243026603020
14501470150015001540
34793479347940124437
35503550355035503550
23972397239723972397
24,826,329,229,029,1
(1x) 18,5(1x) 22(1x) 30(1x) 30(1x) 37
(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200
(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200
5050505050
VXT S345VXT S370VXT S415VXT S445VXT S470
60306070643068806930
33803420377042204270
20502090209021302140
34793479401244374437
53855385538553855385
23972397239723972397
38,241,040,640,443,2
(1x) 30(1x) 37(1x) 37(1x) 37(1x) 45
(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200
(1x) 200(1x) 200(1x) 200(1x) 200(1x) 200
5050505050
VXT S530VXT S600VXT S640
839088609570
485053106030
299029903070
347940124437
722672267226
239723972397
58,458,058,2
(2x) 30(2x) 30(2x) 37
(2x) 200(2x) 200(2x) 200
(1x) 250(1x) 250(1x) 250
505050
VXT S690VXT S740VXT S830VXT S890VXT S940
1211012190129101381013910
67506830753084308530
40904170417042604270
34793479401244374437
1090310903109031090310903
23972397239723972397
76,482,081,280,886,4
(2x) 30(2x) 37(2x) 37(2x) 37(2x) 45
(2x) 200(2x) 200(2x) 200(2x) 200(2x) 200
(2x) 200(2x) 200(2x) 200(2x) 200(2x) 200
5050505050
1. Drain ND 50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50; 5. Water Inlet; 6. Access Door
... because temperature matters
VXT - B 16
VX
T
VXT 315 - 1200General Notes1. All connections 100 mm and smaller are MPT. Connections 150
mm and larger are bevelled-for-welding.
2. Fan kW is at 0 Pa ESP. To operate against external static pressureup to 125 Pa, increase each fan motor one size.
3. The drawings show the standard “right hand” arrangement, whichhas the air inlet side on the right when facing the connection end.“Left hand” arrangement can be furnished by special order.
4. Water outlet, overflow and make-up are always located on thesame end of the unit. For units with two water outlet connectionsan additional overflow connection will be installed on the other endof the unit.
ModelVXT
Operating Weight
(kg)
ShippingWeight
(kg)
HeaviestSection
(kg)H
(mm)L
(mm)W
(mm)Air Flow(m3/s)
Fan Motor(kW)
Fluid InletND (mm)
Fluid OutletND (mm)
Make UpND (mm)
VXT 315VXT 350VXT 375VXT 400
4905519555055535
2960326035603590
1945194519451970
4030448749444944
3550355035503550
3000300030003000
34,5534,3134,1036,62
(1x) 30(1x) 30(1x) 30(1x) 37
(1x) 200(1x) 200(1x) 200(1x) 200
(1x) 200(1x) 200(1x) 200(1x) 200
50505050
VXT 470VXT 525VXT 560VXT 600
7305775082458325
4360481052905370
2770277027702845
4030448749444944
5388538853885388
3000300030003000
51,8251,4450,9254,93
(2x) 22(2x) 22(2x) 22(2x) 30
(1x) 250(1x) 250(1x) 250(1x) 250
(1x) 250(1x) 250(1x) 250(1x) 250
50505050
VXT 630VXT 700VXT 750VXT 800
9805103851100511055
5900649071107160
3885388538853925
4030448749444944
7226722672267226
3000300030003000
69,0968,6268,2073,25
(2x) 30(2x) 30(2x) 30(2x) 37
(2x) 200(2x) 200(2x) 200(2x) 200
(1x) 300(1x) 300(1x) 300(1x) 300
50505050
VXT 870VXT 945VXT 1050VXT 1125VXT 1200
1457014680155601649016570
8720883097101064010720
56705785578557855855
40304030448749444944
1090310903109031090310903
30003000300030003000
94,37103,64102,93102,30109,87
(3x) 22(3x) 30(3x) 30(3x) 30(3x) 37
(3x) 200(3x) 200(3x) 200(3x) 200(3x) 200
(2x) 250(2x) 250(2x) 250(2x) 250(2x) 250
8080808080
1. Drain ND50; 2. Water Outlet; 3. Overflow ND 80; 4. Make Up ND50 and 870 - 1200: ND80; 5.Water Inlet; 6.Access Door.
Baltimore Aircoil
VXT - B 17
Open C
ooling Towers
Sound Attenuation
XA + XB Sound Attenuation for VX-Line Cooling Towers
XC Sound Attenuation for VX-Line Cooling Towers
1. Access Door; L1= Intake Attenuator Length; L2= Discharge Attenuator Length; W & H= unit dimensions (see Engineering Data).
1. Access Door; L1= Intake Attenuator Length; L2= Discharge Attenuator Length; W & H= unit dimensions (see Engineering Data)
... because temperature matters
VXT - B 18
VX
T
(1) VXT-55 + attenuation is shipped in 4 pieces
(1) VXT-75 and VXT 85 + attenuation is shipped in 4 pieces
(2) VXT-95 + attenuation is shipped in 3 pieces
(3) Intake Attenuator: Access opening is 775 mm high, 406 mm wide and is located at each end of the unit.
(3) Discharge Attenuator : Access opening is 400 mm high, 1080 mm wide and is located at blank off side of the unit (Access door of VXT 10-25 has 650 mm width)
Model No.VXT
Unit + Atten. # pieces
shipped
# Access doors (3)
XA, XB, XC
Dimensions(mm)
Weights(kg)
W2 H1 W1 L1 L2 IntakeSolid
Bottom
Discharge Total
XA, XB, XC
Disch. Att.
Int. Att. XA, XB XC XA, XB, XC XA XB XC XA XB XC XA XB XC
10 - 25 3 1 2 2352 N.A. 1090 1030 890 900 110 130 N.A. 30 130 150 N.A. 270 310 N.A.
30 - 55 3(1) 1 2 2352 N.A. 1090 1030 1800 1815 175 220 N.A. 50 175 220 N.A. 400 490 N.A.
65 - 85 3(1) 1 2 2352 N.A. 1090 1030 2710 2730 230 300 N.A. 70 280 350 N.A. 580 720 N.A.
95 - 135 4(2) 1 2 2352 N.A. 1090 1030 3635 3645 300 370 830 100 360 420 N.A. 760 890 N.A.
150 - 185 4 1 2 2583 3728 1600 1420 3635 3645 380 480 1080 120 440 520 1070 940 1120 2270
N215 – N265 4 1 2 3542 4687 2070 1955 3510 3645 500 630 1420 190 530 650 1330 1220 1470 2940
N310 – N395 4 2 2 3542 4687 2070 1955 5365 5480 660 860 1970 300 760 970 1980 1720 2130 4250
N430 - N535 7 2 2 3542 4687 2070 1955 7185 7320 1000 1260 2840 380 1060 1300 2660 2440 2940 5880
C215 - C265 4 1 2 3390 4687 2070 1955 3510 3645 500 630 1420 190 530 650 1330 1220 1470 2940
C310 – C395 4 2 2 3390 4687 2070 1955 5365 5480 660 860 1970 300 760 970 1980 1720 2130 4250
C430 – C535 7 2 2 3390 4535 2070 1955 7185 7320 1000 1260 2840 380 1060 1300 2660 2440 2940 5880
S220 – S320 4 1 2 3542 4687 2070 2365 3550 3645 500 630 1420 190 660 800 1640 1350 1620 3250
S345 – S470 4 2 2 3542 4687 2070 2365 5385 5480 660 860 1970 300 830 1090 2240 1790 2250 4510
S530 – S640 7 2 2 3542 4687 2070 2365 7226 7322 1000 1260 2840 380 1320 1600 3280 2700 3240 6500
S690 – S940 7 4 2 3542 4687 2070 2365 10903 10998 1320 1720 3940 600 1660 2180 4480 3580 4500 9020
315 - 400 4 2 2 4145 5290 2560 2965 3510 3645 560 710 1620 230 710 880 1820 1500 1820 3670
470 - 600 4 2 2 4145 5290 2560 2965 5365 5480 730 980 2240 350 900 1210 2490 1980 2540 5080
630 - 800 7 4 2 4145 5290 2560 2965 7185 7320 1120 1420 3240 460 1420 1760 3640 3000 3640 7340
870 - 1200 10 3 3 4145 5290 2560 2965 10865 10995 1680 2130 4860 690 2130 2640 5460 4500 5460 11010
Baltimore Aircoil
VXT - B 19
Open C
ooling Towers
Structural SupportREMARK: Do not use for construction. Refer to factory certified dimensions & weights. This brochure includes datacurrent at time of publication, which should be reconfirmed at the time of purchase. In the interest of productimprovement, specifications, weights and dimensions are subject to change without notice. Up-to-date engineeringdata and more can be found at www.BaltimoreAircoil.com.
The recommended support arrangement for units consists of parallel I-beams running the full length of the unit, spaced as shown in the following drawing. Besides providing adequate support, the steel also serves to raise the unit above any solid foundation to ensure access to the bottom of the unit. To support units in an alternate steel support arrangement, consult your BAC Balticare Representative.
Units without Sound Attenuation
ModelA
Unit Length(mm)
BUnit Width
(mm)
CCenter dis.
Length(mm)
DCenter dis.
Width(mm)
E(mm)
F(mm)
G(mm)
H(mm)
XMax. Deflection
(mm)Mounting
Holes
VXT 10-25 914 1207 750 1153 - - - - 2 4
VXT 30-55 1829 1207 1664 1153 - - - - 5 4
VXT 65-84 2737 1207 2572 1153 - - - - 8 4
VXT 95-135 3658 1207 3492 1153 - - - - 10 4
VXT 150-185 3645 1438 3492 1378 - - - - 10 4
VXT N215-N265 3550 2397 3238 2327 - - - - 10 4
VXT 315-400 3550 3000 3238 2934 - - - - 10 4
VXT N310-N395 5388 2397 5074 2327 2496 102 - - 13 8
VXT 470-600 5388 3000 5074 2934 2496 102 - - 13 8
VXT N430-N535 7226 2397 6914 2327 3238 438 - - 13 8
VXT C215–C265 3550 2245 3238 2175 - - - - 10 4
VXT C310-C395 5385 2245 5074 2175 2486 102 - - 13 8
1. Outline of Unit; 2. Mounting Holes Ø 22 mm; 3. Unit; 4. Air Intake.
... because temperature matters
VXT - B 20
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Units with Sound Attenuation
VXT C430-C535 7226 2246 6914 2175 3238 438 - - 13 8
VXT S220-S320 3550 2397 3238 2327 - - - - 10 4
VXT S345-S470 5385 2397 5074 2327 2486 102 - - 13 8
VXT S530-S640 7226 2397 6914 2327 3238 438 - - 13 8
VXT S690-S940 10903 2397 10586 2327 2486 102 438 - 13 16
VXT 630-800 7226 3000 6914 2934 3238 438 - - 13 8
VXT 870-1200 10903 3000 10590 2934 3238 438 3238 438 13 12
ModelA
Unit Length(mm)
BUnit Width
(mm)
CCenter dis.
Length(mm)
DCenter dis.
Width(mm)
E(mm)
F(mm)
G(mm)
H(mm)
XMax. Deflection
(mm)Mounting
Holes
1. Outline of Unit; 2. Mounting Holes Ø 22 mm; 3. Outline of attenuator (optional XA or XB); 4. Support Channel attached to optional XA or XB attenuator; 5. (3 + 5) Outline of Attenuator (optional XC); 6. (4 + 6) Support Channels attached to optional XC attenuator; 7. Unit; 8. Sound Attenuation (Type XA, XB or XC); 9. Air Intake.
Baltimore Aircoil
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Open C
ooling Towers
Notes:
1. The recommended support arrangement for VX units consists ofparallel I-beams extending the full length of the unit. Supports andanchor bolts are to be designed and furnished by others.
2. All supporting beams are to be flush and level at top and must beoriented relative to gage line as shown.
3. Recommended design loads for each unit support beam shouldbe 70% of the total unit operating weight applied as a uniform loadto each of the unit beams. The support beam(s) for the optionalintake attenuator(s) needs to carry attenuator only, uniform load of250 kg/m. Beams should be designed in accordance with
standard structural practice. For the maximum allowabledeflection of beams under the unit refer to above table.
4. All mounting holes have a diameter of 22 mm at the locationsshown.
5. If vibration isolators are used, a rail or channel must be providedbetween the unit (and optional attenuator) and the isolators toprovide continuous unit support. Additionally the support beamsmust be designed to accommodate the overall length andmounting hole location of the isolators that may differ from thoseof the unit. Refer to vibration isolator drawings for these data.
... because temperature matters
VXT - B 22
VX
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Engineering Specifications1.0 Cooling Tower1.1 General: Furnish and install _____ factory-assembled, forced-draft, centrifugal fan, counter flow cooling tower(s) with vertical air discharge, conforming in all aspects to the specifications, schedules and as shown on the plans. Overall dimensions shall not exceed approximately _____ mm long x ______ mm wide x _____ mm high. The total connected fan power shall not exceed _____ kW. The cooling tower(s) shall be Baltimore Aircoil Model ____________.1.2 Thermal Capacity: The cooling tower(s) shall be warranted by the manufacturer to cool _____ l/s of water from ______ °C to _____C at _____°C entering wet-bulb temperature.
1.3 Corrosion Resistant Construction (standard): Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of heavy-gauge Z600 metric hot-dip galvanized steel with all edges given a protective coating of zinc-rich compound and the exterior protected with the BALTIPLUS Protection.
(Alternate 1.3) Corrosion Resistant Construction (optional): Unless otherwise noted in this specification, all steel panels and structural members shall be protected with the BALTIBOND®
Corrosion Protection System. The system shall consist of Z600 metric hot-dip galvanized steel prepared in a four-step (clean, pre-treat, rinse, dry) process with an electrostatically sprayed, thermosetting, hybrid polymer fuse-bonded to the substrate during a thermally activated curing stage and monitored by a 23-step quality assurance program.
(Alternate 1.3) Corrosion Resistant Construction (optional): Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of Type 304 or 316 stainless steel and assembled with stainless steel nut and bolt fasteners.
1.4 Quality Assurance: The cooling tower manufacturer shall have a Management System certified by an accredited registrar as complying with the requirements of ISO-9001:2000 to ensure consistent quality of products and services.
1.5 Warranty: The manufacturer’s standard equipment warranty shall be for a period of not less than one year from date of startup or eighteen months from date of shipment, whichever occurs first.
2.0 Construction Details2.1 Structure (VX-Line models): The cooling tower shall be constructed of heavy-gauge steel utilizing double-brake flanges for maximum strength and rigidity and reliable sealing of watertight joints. The heat transfer section shall be removable from the pan/fan section to facilitate shipping and handling. The fan(s) and fan drive system, including the fan motor, shall be factory mounted and aligned and located in the dry entering air stream to ensure reliable operation and ease of maintenance.
2.2 Heat Transfer Section: The heat transfer sections(s) shall consist of a wet deck surface, spray water distribution system and drift eliminators arranged for optimal thermal performance with minimal drift.
2.3 Wet Deck Surface: The wet deck surface shall be formed from self-extinguishing plastic material and shall be impervious to rot, decay, and fungus or biological attack. The wet deck surface shall be manufactured and performance tested by the cooling tower manufacturer to assure single source responsibility and control of the final product.
2.4 Water Distribution System: Water shall be distributed evenly over the wet deck surface by a water distribution system consisting of a header and spray branches of plastic pipe with large orifice, non-clog plastic distribution nozzles. The branches and spray nozzles shall be held in place by snap-in rubber grommets, allowing quick
removal of individual nozzles or complete branches for cleaning or flushing.
2.5 Cold Water Basin: The cold water basin shall be provided with large area lift out strainers with perforated openings sized smaller than the water distribution system nozzles and an anti-vortexing device to prevent air entrainment. The strainer and anti-vortexing device shall be constructed of the same material as the basin to prevent dissimilar metal corrosion. Standard basin accessories shall include a brass make-up valve with large diameter polystyrene filled plastic float for easy adjustment of the operating water level.
(Alternate2.5) Cold Water Basin: The cold water basin shall be constructed of heavy-gauge Type 304 or 316 stainless steel panels and structural members up to the heat transfer section/basin joint. The basin shall be provided with large area lift out strainers with perforated openings sized smaller than the water distribution system nozzles and an anti-vortexing device to prevent air entrainment. The strainer and anti-vortexing device shall be constructed of the same material as the basin to prevent dissimilar metal corrosion. Standard basin accessories shall include a brass make-up valve with large diameter polystyrene filled plastic float for easy adjustment of the operating water level.
3.0 Mechanical Equipment3.1 Fan(s): Fan(s) shall be dynamically balanced, forwardly curved, centrifugal type selected to provide optimum thermal performance with minimal sound levels. Fan housings shall have curved inlet rings for efficient air entry and four-sided rectangular discharge cowls shall extend into the basin to increase fan efficiency and prevent water from splashing into the fans.
3.2 Bearings: Fan(s) and shaft(s) shall be supported by heavy-duty, self-aligning, relubricatable bearings with cast iron housings, designed for a minimum L10 life of 40 000 hours (280 000 Hr. Average. Life).
3.3 Fan Drive: The fan(s) shall be driven by matched V-belts with taper lock sheaves. Motor shall be located on a heavy-duty motor
base, adjustable by a single threaded bolt-and-nut arrangement. Removable steel screens or panels shall protect the fan drive and all moving parts.
3.4 Fan Motor: Furnish _____ kW, ______ RPM Totally Enclosed, Fan Cooled (TEFC), squirrel cage, ball bearing type fan motors suitable for outdoor service. Motor(s) shall be suitable for ________ volt, ___ hertz, and __ phase electrical service.
3.5 BALTIGUARD® Fan System (optional): Two-single speed fan motors, one sized for full speed and load, the other sized for 2/3 speed and approximately 1/3 of full load kW shall be provided in each cell for capacity control and stand-by protection from drive or motor failure. Two-speed motor(s) are not an acceptable alternative.
Baltimore Aircoil
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Open C
ooling Towers
4.0 Drift Eliminators4.1 Drift Eliminators: Eliminators shall be constructed of specially formulated plastic material and be removable in easily handled sections. They shall have a minimum of three changes in air direction.
5.0 Access5.1 Basin Access: Circular access doors shall be provided for easy access to the make-up water assembly and suction strainer for routine maintenance.
6.0 Sound6.1 Sound Level: To maintain the quality of the local environment, the maximum sound pressure levels (dB) measured 15 m from the
cooling tower operating at full fan speed shall not exceed the sound levels detailed below.
Location 63 125 250 500 1000 2000 4000 8000 dB(A)
Discharge
Air Inlet
End
Back
... because temperature matters
VXT - B 24
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Baltimore Aircoil