SPRAY WATER DEVICE - T
Contents
1. NS SPRAY WATER DEVICE User Manual opray Water Device Installation and maintenance manual Table of contents TO THE USER page 3 GENERAL page 4 APPLICATIONS page 4 TRANSPORT AND STORAGE page 6 LAYOUT page 7 THEORY page 10 FUNCTIONALITY RANGE page 12 USE CAS CONSIDERING SPRAY WATER DEVICE page 14 WORKING PRESSURE AND FLOW CONDITION Spage 18 SETTING PRESSURE AND WATER FLOW RATE IN CASE OF SPECIAL ENVIRONMENTAL CONDITION page 21 QUALITY OF WATER page 26 SERVICE INSTRUCTIONS page 26 SPARE PARTS page 28 TROUBLESHOOTING page 30 NOTE page 30 THE TECHNICAL INFORMATION How to contact Alfa Laval SUPPLIED AND OTHER MINOR The contact information for each country CHANGES CAN BE MODIFIED is constantly updated in our website WITHOUT NOTIFICATION Visit Alfalaval site to get this information opray Water Device Installation and maintenance manual TO THE USER Dear User this instruction manual is intended to be your permanent guide for the different situations you may encounter when using this equipment Alfa Laval recommends you to study it carefully and mainly to make it available for the personnel who normally install operate and maintain the equipment This manual will be useless if cannot be reached by the personnel who may need it In the unlikely case that you may have some problem not contemplated in this manual don t hesitate to contact the closest Alfa Laval s representative We can offer you our2. not install the kit where there is wind as reported on unit instruction manual ATTENTION This device has been developed to avoid the risk of Legionella If you want to provide a tray to recover not evaporated water remember to DO NOT promote water accumulation to avoid the growth and spread of Legionella On V type the nozzle angle is set on 10 degrees on vertical drawing below This angle assures the best performance in absence of wind and humidity temperature average conditions opray Water Device Installation and maintenance manual On Dual the nozzle angle is set on 15 degrees on horizontal drawing below This angle assures the best performance in absence of wind and humidity temperature average conditions both in vertical and horizontal unit installation NOTE Before installing and starting up the Spray Water Device read this paragraph carefully opray Water Device efficiency is influenced by Relative humidity Ambient temperature Fans motor airflow Wind VVVV The correlation between relative humidity and water absorption degree of efficiency is not linear For example If relative humidity is 90 the air is almost saturated using Spray Water Device an abnormal dipping will be noted It s because the air is not able to accept additional water inside It s not necessary using the device If relative humidity is 3096 the device is absolutely necessary the charge of water in the air has
3. Distorted spray from damaged or clogged nozzle Spray from clean nozzle 27 opray Water Device Installation and maintenance manual Common causes of spray nozzle problems Erosion The gradual removal of material from the surfaces of the nozzle orifice and internal flow passages causes them to become larger and or distorted which can affect flow pressure and spray pattern Clogging Unwanted dirt or other contaminants blocking the inside of the orifice can restrict the flow and disturb spray pattern uniformity Caking Over spraying misting or chemical buildup of material the inside or outer edges of the orifice from evaporation of liquid can leave a layer of dried solids and obstruct the orifice or internal flow passages Temperature damage Heat may have an adverse effect on nozzle materials not intended for high temperature applications Improper reassembly Misaligned gaskets or other repositioning problems can result in leakage as well as poor spray performance Accidental damage Scratching through the use of improper tools during installation or cleaning can cause inadvertent harm to an orifice Erasion and wear Carroded Heat damaged Damaged PIPELINE MAINTENANCE Verify that the circuit is not occluded it can happen if the quality of water is not as requested before A first check after 10 hours of running and then every 200 hours is suggested DRAINAGE TO AVOID ICE FORMATIONS If the amb
4. Installation and maintenance manual NozzleType Ill pressure flow selection chart NOZZLE TYPE IIl DO NOT SELECT PRESSURE OVER THIS LIMITS 0 7 0 6 0 5 4 0 4 l min 0 3 0 2 0 1 This type of nozzle is mounted on DCDQ BCDQ BDDQ BNDO 800 910 1000 DCDR BCDR BDDR BNDR 800 910 1000 Its used to guarantee the best humidification efficiency also with low airflow rate on version with electrical wiring D Note Never set device to work over 12 bar Note All types of nozzle can be fitted in the whole units range See Spare Parts section to know Alfa Laval code of nozzle Type l Type Il and Type lll 24 opray Water Device Installation and maintenance manual Below a table to find a water density at design temperature and relative humidity Use these table to perform a calculation of water needed in case of abnormal weather conditions Kg m pe Kg m C Kg m 20 30 12 29 30 116 38 30 113 20 40 29 40 116 38 40 112 20 50 12 29 50 116 38 50 112 20 60 12 2 6 116 33 60 112 21 30 12 30 30 116 39 30 112 21 40 12 3 40 116 39 40 112 21 50 1419 30 50 115 39 50 112 _ 323 6 119 30 6o 115 60 111 22 30 1419 31 30 115 40 30 112 22 40 1419 3 40 115 40 40 111 L 29 50 119 3
5. gt Z Y X BCDR BDDR BNDR800 910 1000 J Y X Nozzle Nozzle Nozzle Model with electrical wiring Y type ll type lll type 111 7 NEN VDDS VDD6 ACVL800 910 h S X VDDS VDD6 ACVQ 800 910 1000 CX VDDS VDD6 ACVR 800 910 1000 CX BCDT BCDS BDDT BDDS BNDT BNDS 80 910 X BCDL BDDL BNDL800 910 0 CX BCDQ BDDQ BNDQ800910 1000 CX BCDR BDDR BNDR 800 910 1000 CX decrease the water flow pressure of 50 according to the airflow rate The nozzle is coupled to a unit cosidering e Module surface e Average airflow rate e Unit layout The nozzle proposed delivered as standard realize the best performance in standard condition Note If the working conditions are out of standard it s possible to interchange the nozzle type mounted 18 opray Water Device Installation and maintenance manual a Vtype Standard noise and Vtype Low noise Total Water Flow Inlet l min PI of nozzles Electrical wiring D Electrical wiring Y VDD S T L 802 902 VDD6 S T L 802 902 2620 ACV S T L 802 902 VDD S T L 803 903 ACV S T L 803 903 VDD S T L 804 904 ACV S T L 804 904 VDD S T L 805 905 VDD6 S T L 805 905 6550 ACV S T L 805 905 VDD S T L 806 906 VDD6 S T L 806 906 7860 15 06 ACV S T L
6. 1 10 20 30 au 5 Dry bulb temperature DBT C Absolute humidity AH ga kg Relative humidity line Relative humidity RH is an expression of the moisture content of a given atmosphere as a percentage of the saturation humidity at the same temperature RH 100 x AH SH 96 Relative humidity lines are plotted on the psychrometric chart by halving each SH ordinate to obtain the 5096 curve dd ieee and further proportionate subdivision gives any Relative humidity fines RA intermediated RH curve lt 10 opray Water Device Installation and maintenance manual Wet bulb temperature lines s Wet bulb temperature WBT is measured by a hygrometer 25 or psychrometer This consists of two thermometers one measuring the DBT the other having its bulb enclosed in a wet wick Web bulb depression is noted as the difference in Bu the temperatures between the wet wick thermometer and the 5 DBT The difference happens as the wet wick thermometer is 2 cooled down by the evaporation on the wick LJ The amount of evaporation is a direct indication of the Wet bulb temperature lines C moisture carrying capacity of the atmospheric air at that temperature and that lowers the WBT When the air is saturated there is no evaporation thus the DBT and WBT readings are identical and the depression is zero In this way the status point is determined at the intersection of the verti
7. BDDL BNDL 803 903 6300 BCDT BCDS BDDT BDDS BNDT BNDS 804 904 7000 16 4 8 BCDL BDDL BNDL 804 904 8400 BCDT BCDS BDDS BNDT BNDS 805 905 8750 20 12 BCDL BDDL BNDL 805 905 10500 BCDT BCDS BDDT BDDS BNDT BNDS 806 BCDL BDDL BNDL 806 Electrical wiring D Every nozzle is designed to work at 2 5bar nebulize 0 6 l min Electrical wiring Y Every nozzle is designed to work at 2 5bar and nebulize 0 3 l min Double Row Quiet noise and Double Row Residential noise Total Water Flow Inlet l min Model team of nozzles wiring D wing mm of nozzles wiring D wiring Y Eee w teu BCDR BDDR BNDR 802 902 1002 4200 EL e BCDR BDDR BNDR 803 903 1003 6300 EXE ro e e ae BCDR BDDR BNDR 804 904 1004 8400 e BDDR BNDR 805 905 1005 10500 2 6 12 16 20 BCDQ BDDQ BNDQ 806 Electrical wiring D Every nozzle is designed to work at 2 5bar and nebulize 0 3 l min Electrical wiring Y Every nozzle is designed to work at 1 5bar and nebulize 0 15 l min 21 opray Water Device Installation and maintenance manual SETTING PRESSURE AND WATER FLOW RATE IN CASE OF SPECIAL ENVIRONMENTAL CONDITION In this section there are three graphs each one show a pressure flow correlation To set the Spray Water Device if environmental condition is over the functionality range use the
8. graph below Use this graph type also when suggested in troubleshooting section Example if the line water pressure is higher than 2 53 0 the flow rate will be higher Thanks to these graphs it possible to predict Device efficiency Nozzle Type pressure flow selection chart NOZZLE TYPE I DO NOT SELECT PRESSURE 9 OVER THIS LIMITS 4 5 3 5 4 l min no 0 2 4 6 8 10 12 14 16 18 20 22 24 This type of nozzle is mounted on VDDS 800 910 VDDL 800 910 It assure an optimal air saturation with high airflow rate A large water spray cone allow to cover all the coil surface especially where the air velocity is maximum 22 opray Water Device Installation and maintenance manual Nozzle Type II pressure flow selection chart NOZZLE TYPE Il DO NOT SELECT PRESSURE di OVER THIS LIMITS 2 25 4 leo l min 0 75 0 5 0 25 This type of nozzle is mounted on gt VDDQ 800 910 1000 VDDR 800 910 1000 gt BCDT BCDS BDDT BDDS BNDT BNDS 800 910 BCDL BDDL BNDL 800 910 It assure an optimal air saturation with lower airflow rate than previous model It s suggested to use this type of nozzle on and VDDL 800 and VDDL 910 if the design temperature is lower than 25 and or the relative humidity is higher than 6096 In this way it s possible to avoid the flooding risk that could be effective in the upon weather conditions 23 opray Water Device
9. increased The status point moves up and to the left along a WBT line This is the process involved in evaporative cooling n Temperature reduction 11 opray Water Device Installation and maintenance manual FUNCTIONALITY RANGE opray Water Device has been designed to properly work on various sets of external temperature and relative humidity T air Relative Humidity 96 25 40 30 60 If the unit has to work outside of this range please contact Alfa Laval Heat Air Exchanger Product Center to obtain an accurate Device design Example of theoretical calculation ouppose that T ambient external air is 25 C 50 96 Ur Point A The corresponding humidity ratio is 10 g Kg of dry air From the point A following the corresponding line at constant enthalpy on saturation line we set Point B the corresponding humidity ratio is 13 g Kg of dry air Humidity Hatio g Kg Saturation line 50 Relative Humidity B 13 g Kg 10 g K A Q KQ DBT C T 17 C T 25 C The air after the treatment should be at 17 C but the humidification efficiency never is 100 12 opray Water Device Installation and maintenance manual The humidification efficiency must be considered of 709 For this the length of line AC is the 7096 of line AB AC 0 7 AB Humidity Hatio g Kg Saturation line 50 Relative Humidity C A 10 g Kg DBT C T 20 C T 25 C Finally the inlet temperature before coil is 20 C To
10. 3 50 mm 30 opray Water Device Installation and maintenance manual TROUBLESHOOTING No water from nozzles No water inlet Check the connection No water from one nozzle Dirt on pipe section or nozzle Check pipe or nozzle Decrease the pressure Environmental conditions are changed according with new Water dripping calculated water flow rate Wrong water pressure or flow rate Check water pressure and flow rate NOTE Rev 03 Added model AlfaBlue Condenser AlfaBlue Dry Cooler AlfaBlue Ammonia Condenser Rev 04 Delete old series DCD ACD DCV Sobstitute cod 43007520 with 43007550 and 43007524 with 43007551 both in stainless steel material Sobstitute the Palladio selection with CAS selection Rev 05 Delete the E Pipe Supporting Stirrup component cod 60626118 Alfa Laval Spa Via delle Albere 36040 Alonte VI Italy SALE Tel 39 0444 725411 Fax 39 0444 725400 Z EU X 2 31
11. 5 115 40 50 111 22 6 149 3 6o 115 40 60 111 283 30 1419 32 30 115 41 30 4 41 23 40 119 32 40 115 41 40 111 389 1L Bm 22 ae ae ae 23 60 148 32 60 114 41 60 1 1 24 30 148 33 30 115 42 30 111 24 40 148 33 40 114 42 4 111 204 50 148 33 50 114 42 50 11 24 60 148 33 60 114 42 60 11 25 30 148 34 30 114 43 30 111 25 40 148 34 40 114 43 40 141 __ 5 30 118 34 50 114 43 50 11 5 e 1 26 30 1418 35 30 114 44 30 11 26 40 117 35 40 114 44 40 11 ee ee ee ee ee 26 60 117 35 60 113 44 60 1 09 27 30 117 36 30 113 45 30 11 27 40 117 36 40 113 45 40 1 09 27 50 117 36 50 113 45 50 1 09 27 60 117 36 60 113 45 60 1 09 28 30 117 37 30 1133 328 4 7 3 4 Was _ 283 50 37 50 112 2 60 16 37 60 1442 J ATTENTION Always check pressure and flow conditions arranging it in case of environment conditions change Also see troubleshooting section 25 opray Water Device Installation and maintenance manual Below a psychrometric chart Use these table to perf
12. 806 906 VDD S T L 807 907 ACV S T L 807 907 VDD S T L 808 908 ACV S T L 808 908 Electrical wiring D Every nozzle is designed to work at 2 5bar and nebulize 1 3 l min Electrical wiring Y Every nozzle is designed to work at 2 5bar and nebulize 0 6 l min 19 opray Water Device Installation and maintenance manual a Vtype Quiet noise and Vtype Residential noise Total Water Flow Inlet l min Length Number Electrical wiring D Electrical wiring Y mm of nozzles VDD Q R 802 902 1002 VDD6 Q R802 902 1002 2620 4 2 04 1 02 ACV Q R 802 902 VDD Q R 803 903 1003 VDD6 Q R803 903 1003 3930 3 06 1 08 ACV Q R 803 903 VDD Q R 804 904 1004 VDD6 Q R804 904 1004 5240 4 08 2 04 ACV Q R 804 904 VDD Q R 805 905 1005 VDD6 Q R805 905 1005 6550 10 3 ACV Q R 805 905 ose dom onm VDD Q R 806 906 1006 VDD6 Q R 806 906 1006 860 ACV Q R 806 906 VDD Q R 807 907 1007 VDD6 Q R 807 907 1007 9170 ACV Q R 807 907 VDD Q R 808 908 1008 VDD6 Q R 808 908 1008 10480 ACV Q R 808 908 Electrical wiring D Every nozzle is designed to work at 2 5bar and nebulize 0 6 l min Electrical wiring Y Every nozzle is designed to work at 2 5bar and nebulize 0 3 l min 20 opray Water Device Installation and maintenance manual Double Row Standard noise and Double Row Low noise Total Water Flow Inlet l min mm of nozzles wiring D wiring Y EM SEC POSE ICH BCDL BDDL BNDL 802 902 4200 EIFE MEME BCDL
13. OMETRIC PRESSURE 101 325 kPa PSYCHROMETRIC CHART Normal Temperature SI Units SEA LEVEL DRY BULB TEMPERATURE C 70 7 www alfalaval com opray Water Device Installation and maintenance manual QUALITY OF WATER On this kit use only water characterized by 6 7 Hardness 8 12 F 80 120 ppm as Using this kind of water after 400 hours of use there will not visible limestone deposit and calcium layer on the coil Anyhow tube is made of Inox to avoid internal rust formations also during the inactivity time Pipe is developed to be easy drainable it s possible to inclin from bends to collectors side Anyhow assure to flux with air the pipeline during non operative time to avoid freezing risk NOTE If the utilization exceed 400 hours per year apply an suitable coil treatment depending also on surrounding conditions ATTENTION Always use a filter on pipeline to avoid deposit of dirt Flux the pipeline with air to complitely drain the water during inactivity period SERVICE INSTRUCTIONS ATTENTION Before starting service operations make sure that the circuit is reliably switched off Trouble free operation of Spray Water Device adiabatic system requires regular service to check NOZZLE MAINTENANCE The nozzles need regular maintenance with the scope of keeping the efficiency and avoid damages A first check after 5 hours of running and then every 100 hours is suggested P sa
14. The adiabatic saturation temperature is a specific temperature value at which water by adiabatic evaporating brings the air itself to a saturation point this then cools the water turning the temperature towards the wet bulb temperature The physical phenomenon of adiabatic saturation is obtained by using an adiabatic vaporizing system The suction air on the water cooler collides with a very fine water particle mist obtained with custom built spray nozzles fitted in order to create a complete and uniform saturation of the entering air For these reasons nozzles are not oriented on coil scope of Spray Water Device is humidifies the air around the coil The psychometric chart To explain how to calculate the adiabatic saturation temperature its necessary to introduce the psychometric chart The psychometric chart represents the state of a given atmosphere by a point which gives the dry bulb wet bulb relative humidity specific volume and saturation temperature of the atmosphere Saturation humidity line Absolute humidity AH is the vapor content of air given in grams of water vapour per kg of air i e g kg Air at a given temperature and pressure can support only a certain amount of moisture and no more This is referred to as the saturation humidity SH If this is plotted on a graph against the dry bulb air temperature DBT we have the basis of the psychromeytric chart and we get what is called the saturation humidity line
15. With Spray Water Device Model 1 x VDDT907C 1 x VDDT905B Length 9490 mm 68 0 mm Standard Unit Weight 3209 Kg 2035 Kg Number of Fans 14 10 Power Consumption Op Nom 50400 W 36000 W Nominal current 100 8 A 72 0 To evaluate by yourself water flow rate necessary in this condition are necessary Humidity ratio of point A 24 359 g Kg using the calculation file Humidity ratio of point B 27 146 g Kg using the calculation file The airflow rate of the second unit selected 310000 m h on CAS printout Air density at 40 and 5096 Relative Humidity 1 1274 Kg m from the calculation file VNNN The necessary amount of water to humidify the air is Mw 1 8852 m3 h NOTE In case of particular surrounding conditions and low fan rotations speed the air pressure drop on coil could increase due to fine drops accumulation Alfa Laval strictly recommend to select and use an adequate fin spacing 17 opray Water Device Installation and maintenance manual STANDARD WORKING PRESSURE AND FLOW CONDITIONS Alfa Laval provides three types of nozzle as sum up below VDDS VDD6 ACVS 800 910 Z Xf VDDS VDD6 ACVL800 910 o O X VDDS VDD6 ACVQ800 910 1000 gt Z o X VDDS VDD6 ACVR800 910 1000 o O X BCDT BCDS BDDT BDDS BNDT BNDS800 910 O X BCDL BDDL BNDL800 910 gt J KX 800 910 1000
16. cal DBT line and the sloping WBT line of the psychrometric chart 20 Enthalpy lines Enthalpy E is the heat content of unit mass of the atmosphere in kJ kg relative to the heat content of 0 C dry air It was omitted from the psychromteric chart shown above to avoid confusion which a third set of lines will cause The enthalpy lines would almost but not quite coincides with the WBT lines To avoid the confusion in representing it the enthalpy scale is given at the perimeter of the chart and can be read by using a straight edge For air condition P the enthalpy is read at point A The sensible heat component can be read at point B corresponding to the enthalpy of dry air at the same temperature The remainder i e A B is the latent heat content 0 10 JU 3i 0 at Enthalpy H lines KJ kq The psychometric processes A point on the chart known as the status point represents the state of a given atmosphere If any two of the three commonly available characteristics DBT WBT and RH are known the others can be read from the chart Adiabatic saturation can be represented by the movement of this status point in the following ways Adiabatic saturation If moisture is evaporated into an air volume without any heat input or removal this is the meaning of the term adiabatic the latent heat of evaporation is taken from the atmosphere The sensible heat content thus the DBT is reduced but the latent heat content is
17. damage to the equipment In case of damages during transportation the transportation company should be informed immediately in writing in the Document of Delivery It means that if the receiver accepts the goods stamps and signs the document without any note of non conformity the forwarder is not responsible for missing packages or damaged goods We strongly recommend the customer to evidence damaged or missing goods on the full set of this document at the arrival of the goods With a copy of it by e mail in your hands we can speed up corrective actions towards the forwarder and ask for insurance reimbursement Be careful we can act only if we sell in DDU or DDP final destination basis i e our recommended delivery terms For ex works shipments the customer has to act directly with forwarder in charged by himself as per INCOTERMS2000 rules Then Alfa Laval or one of its agents should be informed regarding the damage on the equipment The Client should complete a written report including photographs concerning each relevant damage opray Water Device Installation and maintenance manual LAYOUT Follow the instructions of unit installation manual and remember that Not all the water sprayed will evaporate therefore any surplus water must be drained or recovered Alfa Laval doesn t provide a drain pan because the layout could change depending on customer installation Leave the space to connect the kit to the main pipeline
18. find the water flow follows the example AX 13 10 g kg dry air The airflow rate can be found with Palladio suppose a total amount of 1000 m h M 1000m h x 1 2 9 3 1200 kg h The necessary amount of water to humidify the air 15 Mw M x AX 1200 kg h x g kg 3600 g h 3 6 l hour Every hour you must nebulize on the air 3 6 of water to obtain an efficiency of 8096 NOTE Calculation based on psychometric chart is affected from a huge number of environment variables for this reasons Spray Water Device should be set considering surrounding conditions 13 opray Water Device Installation and maintenance manual USE CAS CONSIDERING SPRAY WATER DEVICE Suppose the air conditions Temperature 40 Relative Humidity 60 If you need 1200kW to cool a fluid Ethylen Glycol 35 from 60 C to 45 C you should select in this way QS CAS 5 Untitled 1 ig File Edit Actions Settings Tools BME Windows Help Air cooler Capacity Airtemp Fluid Intemp Fluid Outtemp Fluid FlowRate MaxFluidPressureDrop Fluid Fluid Concentration Distance Frequency 07906 VDDT907B VDDT908B DDT9082 Done Pump Air cooler Brine Air cooler Air cooled condenser cooler p Settings 1200 kW Dry Coolers Axial fans 50 Hz Duty Mode Design 40 0 Alfa V Operating Mode 60 0 Cl Family y E 45 0 C Alfabl
19. h mm 1 min dB A 14 opray Water Device Installation and maintenance manual Considering that the air reach 40 only during the summer using a Spray Water Device you can select a unit smaller and cheaper In the next chapter there are some table which indicate how choice the device below it s perform an example Using the Spray Water Calculation File present in Sally see picture at 40 and 50 of relative humidity point A the corresponding humidity ratio is 24 359 g Kg of dry air SALLY Air Heat Exchangers on ITALTHERLNO1 Lotus Notes 10 55 995 180811550 09 3 2 7 j6 2 o d SALLY Air Heat Exchangers X jum SALLY Air Heat Exchangers AHE ap Sally navigator About Technical information Documents Technical documentation Alonte Helpman Fincoil 2 Applications Selection tools CUGIIH aeva i LLI gt gt 0079046 xls Compatibility Mode Microsoft Excel mex Ig u General di du Normal Bad Good Neutral 12 Copy BLU E Conditional Format Calculation Check Cell Explanatory Pf Format Painter Formatting as Table 24 X Humidity Ratio Kg moisture kg dry air 15 opray Water Device Installation and maintenance manual From the point A following the corresponding line at constant enthalpy on saturation line
20. help wherever you may be located NOTE The manufacturer will not be held liable in any way and the product warranty no longer is valid if these instructions are not observed or the units are not used correctly System Warranty This equipment is designed to operate properly when installed in accordance with accepted industry standards Failure to meet the following conditions may result in voiding the system warranty Water circuit valves or accessories must be installed following industry standards for good piping practices Set fluid flow and pressure of water circuit in accordance with what is described in this manual Do not set the device to work over 12 bar Use only water treated as described in this manual Dont use this kit for more than 400 hours per year Don t walk on pipes or supports Factory installed layout must not be changed without written Alfa Laval s approval ATTENTION The connections require qualified installers to complete the liquids circuits Do not perform any installation or maintenance operations without having disconnected the power supply opray Water Device Installation and maintenance manual GENERAL It consists of a pipe system with several fitted spraying nozzles that nebulize water in the air suction of the coil The spray water solution is used to increase the cooling capacity of the units by humidification of air around the coil The adiabatic cooling device consist
21. ices are used for sorting the resultiist Standard MinFinspacing 50 v L Fin material Selected unit VDDT905BD58 AL 2 1 CU Total price RCPL incl Selected options 38633 EUR Units Capacity Margin FluidPD Fluid OT AirF Noise FluidF Base Note Length 6870 0 mm A 1 kw kPa C mih dB A mh EUR Height 2210 0 mm i A8 310000 Depth 2230 0 mm 1 298700 Weight 2035 kg 1 383900 Surface 2415 Internal vol 10 3 iit 1 185 126 136 452 447900 67 745 49119 ee i 1 1513 26 1 1 10 411 358600 67 745 49484 Connections In Out 2xDN100 2xDN100 1 1504 253 9 80 412 434100 67 74 5 53298 Sound power LWA 99 dB A 1 1294 7 82 2 99 438 511900 68 745 57336 Fin Material AERE 1 1447 20 349 419 418400 67 745 57503 3 1 1465 224 359 417 496200 68 745 62088 y Lube Material Details Air Alonte 4AL 38633 19 EUR 1 unit s Model Required Capacitv Marain Lenath Height Depth Standard Unit Weight Fan data per single model Air Flow Rate Hiah Number of Fans Fan Diameter Rotation Speed Noise LWA LPA 10 0 m Power Consumption Op Nom Voltage Nominal current 1 x VDDT905B 1200 00 1 3 6870 2210 2230 2035 310000 10 910 890 99 66 36000 400 D 72 mm mm mm ka m3 h mm 1 min dB A 16 opray Water Device Installation and maintenance manual Helevant difference between the units selected Without Spray Water Device
22. ient temperature is under zero remember to drain the pipeline to avoid the formation of ice CLEANLINESS OF COIL Follow the instruction manual of unit to clean the coil clean at least two time per year to keep out the limestone 28 opray Water Device Installation and maintenance manual SPARE PARTS for details see the RCPL ATTENTION Use only Alfa Laval original spares 29 opray Water Device Installation and maintenance manual Type Type Il Type Ill See pages 18 20 coa 41002561 Cod 41002560 Cod 41002559 A Nozzle B Split Eyeless Connectors All Units Cod 41002558 C Pipe Supporting Ring All Units Cod 43007550 D Rod All Units Cod 43007551 E Pipeline DCV 802 902 1002 M DCV 803 903 1003 EN net BEN dere Wee E ee N Ten PN Tn Toer TS Me Tem xou Qu ME DUAL_902_ 1002 ae xo NEU ME Decet me Qus canes jae Below a list of pipe code with relative length Every pipe is provided with rapid connections for fast and easy mounting Code V9999878 V9999879 V9999882 V9999883 V9999884 V9999885 Length 3895 mm 2585 mm 4080 mm 2770 mm 4165 mm 2065 mm Code V9999886 V9999887 V9999888 V9999889 9999890 V9999891 Length 4450 mm 5215 mm 3465 mm 9500 mm 3750 mm 4165 mm Code V9999892 V9999893 V9999894 V9999895 V9999896 V9999897 Length 2065 mm 4450 mm 5215 mm 3465 mm 5500 mm
23. ndenser or dry cooler able to work also during the hottest days of the year 18 during the day Anyhow knowing that these days represent 4 of all year we have to oversize the unit Whitout Device With Device 20 7 15 10 0 0 J Feb Apr May Jun Jul Aug Sep Oct Nov Dec If we consider a new unit with Spray Water Device it s possible to select a unit to work at 14 C opray Water Device will help to overcome the heat peak during July and August The average temperature during the year without these months is 6 8 C In Berlin we suggest to use the device during July and August for a total amount of 360 hours per year considering that it s not necessary use the device during the night because the temperature decrease opray Water Device Installation and maintenance manual TRANSPORT AND STORAGE Kit Spray Water is delivered mounted for Alfagreen Vtype and AlfaBlue models If the equipment has to be stored before its installation one or more months it is convenient to take the following precautions Leave the equipment in its packing Store it indoors a room with adequate conditions temperature 15 to 25 C humidity 50 to 70 and environment without corrosive liquids or vapors ATTENTION The condition of the unit should be verified at the moment of reception check for shock marks or cracks which could cause
24. orm a calculation of water needed in case of abnormal weather conditions ANC JO Yad Ad TVHLN3 S S amp e AYNOYXSW AO WIN 0553 YOdvA o o o o o o o o o m o d e S al a N a e e e o 5 k R i e MM Do 341 V33dlW31 INIOd M3G AHO WYYSO 1M 3d SYNLSIOW OLLV TXT VT TI SFT gt Lp A SE AZT Zy VV LI AY VET AN WP v d Y CES areata JPN PE EO ATA LAAT eH Wa LAK AT TA CARAT 748 A ENA y LA 3 A Y hg UU ECC NEZ CAE NJ e VA PA Ae x TILA AsV TAA AL Vau EPA LED AA TELLE Aau LAA A AAN I 7 BT NA AL AAT TETARA A an TA LAE UIS A TASEA TA A TE BLN Rn Ky SL LA ACA LY UPC LZ AA Vo J APC K IASA 4 y IN TTR A LA RITARIA TAN A EA q LAFA NETRAA R As LLANA TONER ANIM gi AA acr P 1 Were KU D XLV Ve Y VALE VA A AX Lie o VS T XU LIE ls LPS LIN UE LZ BAV SC V NUI D Y y 7 Z A LP RSS M AD S ALLE VINA Ay ZEURE FAVA VA VATA We E 905 d 1 VV INCL AN SN NU NZ LX V D OQ eC ZW NUN AA SC M X A KA AA ty SPT IX KAM 2744 s X 4 BAR
25. s of a pipe system mounted on the air suction side From the spraying nozzles the water is sprayed into the inlet air saturated inlet air causes a significant increase of cooling capacity The inlet temperature could sink by adiabatic cooling of 5 6 This data strictly depends on ambient temperature air velocity airflow and relative humidity APPLICATIONS Alfa Laval suggests applying adiabatic cooling device on dry coolers and condensers when there is a reasonable difference between dry bulb and wet bulb temperatures The following benefits can be achieved installing Spray Water Device gt 1115 possible to overcome the heat peak gt It is possible to use the unit to cool water at temperatures lower than the ambient air temperature gt Dry Coolers and Condensers can be designed for a much lower entering air temperature to obtain a smaller dimension unit with a smaller heat exchanger surface Temperature in Berlin 18 16 14 12 9 10 TANE I 0 Jan Feb Mar Apr Ma Jun Jul ius m Oct Nov Dec opray Water Device Installation and maintenance manual Take Berlin as example the average temperature in the city last year was 8 6 C July and August were the hottest months as showed in the graph during these months the temperature was 18 If we don t consider July and August in our statistic the average temperature decreased to 6 8 C Without Spray Water Device we have to select a co
26. to be increased the air will well accept nebulized water because it s far from saturation point opray Water Device Installation and maintenance manual If the ambient temperature increases also the water needed to saturate the air will increase Take a look to psychromeytric chart on chapter theory to better understand Trendline of water necessity at differents U R 100 0 90 0 80 0 70 0 60 0 40 50 0 25 C 40 0 U R 96 30 0 20 0 20 30 40 50 60 70 80 90 100 110 I h For example over a graph obtained by experimental test which show the correlation between relative humidity temperature and water necessity for humidification as described above The fan motor airflow is necessary to Intake the saturate air into the coil Increase nebulization efficiency thanks to turbulence created If the fan motor rpm decrease the device efficiency will decrease too In presence of light wind there are two opposite effects to evaluate Wind favourite air circulation increasing unit performance this is positive Unfortunately light wind perturb droplet trajectory also creating dipping this is negative NOTE Heavy wind is always negative check unit installation manual to deeply understand reasons and solutions Anyhow Spray Water Device will not function in the correct way in presence of heavy wind opray Water Device Installation and maintenance manual THEORY
27. ue Junior Tues Alfablue Single row 74 5 m h Alfablue Double row 70 00 kPa Eth glycol v VDD6 eries 35 0 0 000 Noise Level T vi dB A 10 00 tri In Outlets Info X T v Attention Prices in the result list below are base prices without any of the selected options These prices are used for sorting the resultlist Standard MinFinsp 0 50 v L Fin material Selected unit VDDT907CD74 AL 2 1 CU Tube material Mech config Total price RCPL incl Selected options 57503 EUR Units Capacity Margin FluidPD Fluid OT AirF Noise FluidF Base Note Length 9490 0 mm l kw KP l l dB A meh EUR 1 Height 2210 0 mm 5 75 69 80 45 8 435200 67 74 5 Depth 2230 0 mmi 2 06 47 54 44 7 420000 67 14 5 Veight 3209 kg 0 365 43 73 45 0 68 745 4517 m7 ternal volume 393 4 litres Connections In Out 2xDN100 2xDN100 Sound power LWA 100 dB A Fin Material Aluminium Tube Material Copper Details Drawing Air Alonte 4AL 57503 04 EUR 1 unit s Model Required Capacity Marain Lenath Height Depth Standard Unit Weight Fan data per single model Air Flow Rate Hiah Number of Fans Fan Diameter Rotation Speed Noise LWA LPA 10 0 m Power Consumption Op Nom Voltage Nominal current 1 x VDDT907C 1200 00 2 1 9490 2210 2230 3209 420000 14 910 890 100 67 50400 400 D 100 8 m3
28. we set point B the corresponding humidity ratio is 27 146 g Kg of dry air The humidification efficiency must be considered of 709 For this the final temperature inlet temperature before coil is 33 48 C it has been rescue 6 5 C The new air conditions are Temperature 40 6 5 C 33 5 C Helative Humidity 100 oelecting the unit with the new condition you need obtain QS CAS 5 Untitled 1 ig File Edit Actions Settings Tools BME Windows Help Air cooler Capacity Airtemp Fluid Intemp Fluid Outtemp Fluid FlowRate MaxFluidPressureDrop Fluid Fluid Concentration Altitude SoundPressureLevel Distance Power supply Frequency Calculate Coit32 Mech config VDDT905C VDDT906A VDDT907A VDDT906C VDDT907B VDDT908A VDDT907C VDDT908B Done TT Untitied 1 v NONE Pump Air cooler Brine Air cooler Air cooled condenser cooler p Settings 1200 RW Dry Coolers Axial fans 50 Hz Duty Mode Design Alfa V Operating Mode 60 0 FC Family i 45 0 C Alfablue Junior Alfablue Single row 745 m h ype Alfablue Double row 70 00 kPa Eth glycol VDDG Series 35 0 0 000 Noise Level T w dB A 10 00 m In Outlets Info Connection D v T 3 Attention Prices in the result list below are base prices without any of the selected options These pr
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