SWLN Counterflow Evaporative Condenser

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SWLN Counterflow Evaporative Condenser

1. Principle of Work
SWLN evaporative condenser uses water and air as the cooling medium. There is refrigerant medium or other high-temperature fluid in the tube. The high-temperature medium flows from the upper intake pipe to all heat exchange coils. When it is cooled by air or water, it will flow out through the lower discharge pipe. The circulating water pump leads recycled water from the bottom of the equipment to the top of the heat exchange coil stack, and then the water goes through shower pipe to be evenly sprayed on the surface of the heat exchange coil by the nozzle. After that, the water will flow through all heat exchange coils to the collecting basin for recycling use. Inlets are set up at the bottom of the evaporative condenser, leading the fresh wind go through the bottom of the coils to the entire group of heat exchange spiral coils from axial flow fan. This kind of structure adopts the heat-exchange countercurrent form of wind and water. At the top of the water pipes, there is a highly-efficient water eliminator for reducing the splashing rate of the water.

2. Parameters of SWLN Counterflow Evaporative Condenser (Table 1)

Type Heat emission under normal operating mode Propeller fan Circulating water pump NH3 filling quantity Weight
Quantity Blowing rate Power Quantity Flow rate Power Net weight Operating weight
KW   M3/h KW   M3/h KW Kg Kg Kg
SWL-420N 420 1 40000 3 1 45 1.5 51 2272 3800
SWL-550N 550 1 45000 4 1 45 1.5 64 2555 4150
SWL-620N 620 1 65000 4 1 65 2.2 78 2830 4900
SWL-750N 750 1 70000 5.5 1 65 2.2 88 3750 5350
SWL-860N 860 2 40000(2) 3(2) 1 65 2.2 102 4220 6100
SWL-920N 920 1 80000 4 1 65 2.2 113 4470 6900
SWL-1050N 1050 2 45000(2) 4(2) 1 100 3 128 5160 7200
SWL-1150N 1150 2 100000 7.5 1 100 3 141 5390 7900
SWL-1250N 1250 2 65000(2) 4(2) 1 100 3 153 5800 9200
SWL-1380N 1380 2 70000(2) 5.5(2) 1 100 3 170 6230 9700
SWL-1490N 1490 2 70000(2) 5.5(2) 1 130 4 175 6600 10600
SWL-1575N 1575 3 50000(3) 3(3) 1 130 4 192 7120 10800
SWL-1650N 1650 3 50000(3) 3(3) 1 130 4 204 7990 11500
SWL-1765N 1765 2 78000(2) 5.5(2) 1 130 4 219 8220 11600
SWL-1950N 1950 3 65000(3) 5.5(3) 1 170 5.5 230 8776 12700
SWL-2100N 2100 3 75000(3) 5.5(3) 1 170 5.5 255 9698 13200
SWL-2200N 2200 3 78000(3) 5.5(3) 1 170 5.5 261 9858 13900
SWL-2300N 2300 2 100000(2) 7.5(2) 1 170 5.5 281 9870 14000
SWL-2450N 2450 3 78000(3) 5.5(3) 1 230 7.5 305 10676 14600
SWL-2650N 2650 3 80000(3) 4(3) 1 230 7.5 327 11468 15800
SWL-2850N 2850 3 85000(3) 7.5(3) 1 230 7.5 327 11626 16000
SWL-3120N 3120 3 87000(3) 7.5(3) 1 230 7.5 392 13370 17200
SWL-3280N 3200 3 100000(3) 7.5(3) 1 230 7.5 392 13500 17350

3. Advantages
(1) Convenient Maintenance
Humanized design structure with large access door and sufficient inner room, enables maintainers to conveniently conduct inspection and repair work inside SWLN evaporative condenser. In addition, ball cock and dust-gauze can be examined and repaired under online maintenance. Moreover, the same direction of airflow and water flow makes it very convenient to examine and repair nozzles and coils when the machine is running.
(2) Small Floor Space and Low Investment
The evaporative condenser combines the features of traditional condenser, cooling tower, circulating water pump, basin and connected pipes together, so it eliminates the need for the above devices, contributing to small floor space and low investment.
(3) Tilted Collecting Basin for Convenient Cleaning
The bottom of the collecting basin is tilted towards pollutant discharge exit, and the PVC padding heat exchange layer is suspending. These design features can help remove the pollutants and impurities in collecting basin.
(4) Great Heat Exchange Performance
SWLN evaporative condensers adopt the combination of coil(same water flow and airflow direction) and padding to effectively avoid the dry spot and dirt formed on the coil walls. This helps realize high-efficiency heat exchange.
(5) Convenient Transportation and Installation
Our evaporative condensers are easy to transport and install as a result of their standard module transportation and on-site installation.
(6) Low Failure Rate
In addition to high-quality bearings, fans and water pumps have no other wearing parts. Fans adopt direct connection structure and remove rotational losses brought by pulley structure.
(7) Low Operating Cost and Energy Saving
Because of its unique structure, our evaporative condenser offers high thermal performance, low condensing temperature, low water and energy consumption, low noise and maintenance cost.

4. Model Selection Guide
Instructions for Choosing a Right Model
1. Confirm conditions: condensing temperature, wet bulb temperature.
2. Calculate total heat emission amount that goes through system to condensers.
3. Take a reference to Table 2, select heat emission amount correction index.
4. Total amount of heat emission multiplies heat correction index equals to the condensing load during the working conditions.
5. Take a reference to Table 1, select the heat emission amount data which is bigger than or equivalent to the data after correction.

For Example:
1. Conditions: condensation temperature 36 ℃, wet bulb temperature 29 ℃.
2. Total emission amount of ammonia refrigeration system is 930KW. (Compressor cooling capacity + compressor shaft power = total emission amount of heat)
3. Take a reference to table 2, heat correction index is 1.88
4. Calculate the actual load of condensers: 930KW×1.88 = 1748.4 KW
5. Take a reference to Table 1, select SWL-1765N-type evaporative condenser, the heat emission of which is more than 1748.4KW.

R717 Heat Emission Correction Index (Table 2)

Condensing temperature Air inlet bulb temperature(℃)
(℃) 10 12 14 16 17 18 19 20 21 22 23 24 25 26 27 28 29
29 ℃ 0.96 1.07 1.16 1.28 1.34 1.45 1.55 1.76 1.93 2.16 2.50 2.95 3.40 - - - - - - - -
30 ℃ 0.93 1.03 1.11 1.23 1.29 1.38 1.47 1.59 1.78 1.95 2.20 2.52 2.98 - - - - - - - -
31 ℃ 0.90 0.95 1.04 1.14 1.20 1.27 1.34 1.44 1.52 1.72 1.83 2.10 2.50 2.72 - - - - - -
32 ℃ 0.80 0.90 0.96 1.07 1.13 1.18 1.25 1.32 1.43 1.52 1.68 1.83 2.06 2.25 2.67 - - - -
33 ℃ 0.76 0.80 0.88 0.94 1.02 1.03 1.08 1.15 1.21 1.31 1.42 1.56 1.74 1.89 2.20 2.65 - -
34 ℃ 0.70 0.74 0.81 0.86 0.88 0.92 0.98 1.05 1.12 1.19 1.26 1.39 1.50 1.69 1.92 2.20 - -
35 ℃ 0.68 0.72 0.78 0.83 0.86 0.91 0.95 0.99 1.02 1.15 1.23 1.31 1.37 1.53 1.66 1.88 1.97
36 ℃ 0.67 0.71 0.75 0.81 0.83 0.87 0.90 0.94 0.97 1.03 1.10 1.18 1.27 1.38 1.49 1.68 1.88
37 ℃ 0.64 0.67 0.69 0.74 0.76 0.78 0.81 0.83 0.90 0.95 0.98 1.05 1.12 1.20 1.30 1.40 1.59
38 ℃ 0.61 0.63 0.66 0.71 0.74 0.76 0.79 0.81 0.86 0.90 0.94 0.99 1.05 1.12 1.21 1.31 1.44
39 ℃ 0.59 0.61 0.64 0.69 0.71 0.74 0.76 0.78 0.82 0.87 0.87 0.92 0.96 1.05 1.13 1.25 1.31
40 ℃ 0.58 0.69 0.62 0.65 0.67 0.70 0.72 0.74 0.76 0.80 0.83 0.87 0.91 0.96 1.02 1.09 1.18
41 ℃ 0.54 0.57 0.59 0.63 0.65 0.67 0.69 0.72 0.74 0.77 0.80 0.83 0.86 0.92 0.98 1.02 1.11
42 ℃ 0.51 0.54 0.57 0.60 0.62 0.63 0.64 0.68 0.69 0.71 0.74 0.76 0.84 0.88 0.93 0.99 1.06

5. High Quality Parts
(1) Imported Galvanized Steel Sheet
The shell of SWLN evaporative condenser uses imported galvanized steel sheet, which offers great corrosion resistance, heat resistance and aesthetic appearance. In addition, the galvanized steel sheet lasts 3-6 times longer than ordinary galvanized plates.

(2) Electronic Water Treatment Apparatus
The evaporative condenser is equipped with advanced electronic water treatment apparatus, which can do antiscale, contaminant separation, sterilization and algae removal through the use of electronic pulse technique. The only thing you need to do is Connect 220V power, and then it will deal with the recycled water, which effectively prevents the formation of dirt on both coil walls and padding.
(3) Circulating Water Pump
The circulating water pump uses quality mechanical seal that is not restricted by the direction of rotation. It offers long lifetime, no leakage, low power, high flow rate, low noise, and other advantages.
(4) Propeller Fan
SWLN ventilation system uses a special propeller fan with aluminum alloy blade, featuring front tipping blades, streamlined entrance wind-cone, nor-pulley driven structural design and totally enclosed self-cooled motor with low noise. It has such advantages as light weight, small size, good starting performance, reliable operation and high durability.
(5) Heat Exchange Coils
The forward flow type coils are made of high-quality steel pipes; counter flow type coils are made of quality elliptical steel pipes. The design pressure is 2.0MPa. In order to ensure 100% qualified welding quality, 2.0MPa airproof tests are conducted at coil-shaping stage and assembly stage, and the whole pipe bundle has undergone a hot-dip galvanizing treatment.
(6) Water Dispatching System
The cooling water spray system of SWLN evaporative condenser uses high-flow-rate and ant-clogging basket type nozzle to ensure water can be continuously sprayed on the components of the coil. Under the help of induced air, water can thoroughly cover all the coils to facilitate the complete heat exchange among water, air and refrigerant. In this case, heat transfer efficiency will increase dramatically. The nozzle is connected on spray pipe branch, which can be easily removed for convenient cleaning.
(7) Dismountable Water Dehydrator
The dehydrator of the evaporative condenser is made of corrosion resistant PVC material. The special structure can get rid of the humid air moisture coming out from the coil pipe by means of changing the air current 3 times, making the water leakage rate as low as 0.001%. It is very convenient to disconnect the dehydrator when we do the cleaning.
(8) PVC Padding Heat Exchange Layer
SWLN evaporative condensers adopt PVC honeycomb type padding. The short horizontal air-inlet design can help the cool air and water do heat exchange to the utmost extent. In addition, the padding can bear the water up to 68℃, and has the advantages of good flame-retardant performance, ageing resistance, deformation resistance and low wind resistance coefficient, etc.

6. External Dimensions Data(Table 3)

Type Dimensions Compensating water pipe Drain pipe Overflow pipe Air inlet pipe Water outlet pipe
A B C D E F G H
SWL-420N 1840 1920 1200 2740 1500 860 250 3960 DN25 DN50 DN65 DN65 DN65
SWL-550N 1840 1920 1220 3020 1500 1090 250 4240 DN25 DN50 DN65 DN80 DN80
SWL-620N 1840 1920 1370 3250 1650 1320 250 4470 DN25 DN50 DN65 DN80 DN80
SWL-750N 2390 2460 1420 2790 1700 860 250 4210 DN25 DN50 DN65 DN80 DN80
SWL-860N 1840 3760 1420 2740 1700 860 250 4160 DN25 DN50 DN80 DN100 DN100
SWL-920N 3030 2460 1420 2740 1700 860 250 4210 DN25 DN50 DN80 DN100 DN100
SWL-1050N 1840 3760 1470 3020 1750 1090 250 4490 DN25 DN50 DN80 DN100 DN100
SWL-1150N 3030 2460 1470 3020 1750 1090 250 4490 DN25 DN50 DN80 DN80(2) DN100
SWL-1260N 1840 3760 1470 3250 1750 1320 250 4720 DN25 DN50 DN80 DN80(2) DN100
SWL-1380N 2390 3760 1520 3020 1800 1090 260 4540 DN25 DN50 DN80 DN80(2) DN100
SWL-1490N 2390 4730 1520 2790 1800 860 260 4310 DN25 DN50 DN80 DN80(2) DN100
SWL-1575N 1840 5475 1570 3020 1850 1090 260 4590 DN25 DN50 DN80 DN80(2) DN100
SWL-1650N 2390 5475 1570 2790 1850 860 260 4360 DN25 DN50 DN80 DN80(2) DN100
SWL-1765N 2390 4730 1670 3020 1950 1090 260 4690 DN32 DN65 DN80 DN100(2) DN80(2)
SWL-1950N 1840 5475 1720 3250 2000 1320 270 4970 DN32 DN65 DN80 DN100(2) DN80(2)
SWL-2100N 2390 5475 1870 3020 2150 1090 270 4890 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-2200N 3030 5475 1870 2790 2150 860 280 4680 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-2300N 3030 4730 1870 3020 2150 1090 280 4890 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-2450N 2390 5475 1870 3250 2150 1320 280 5120 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-2650N 3030 5475 1870 3020 2150 1090 280 4890 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-2850N 3030 5475 1870 3020 2150 1090 290 4890 DN32 DN65 DN80 DN100(2) DN100(2)
SWL-3120N 3030 5475 1870 3250 2150 1320 290 5120 DN32 DN80 DN80 DN100(2) DN100(2)
SWL-3280N 3030 5475 1870 3250 2150 1320 290 5120 DN32 DN80 DN80 DN100(2) DN100(2)

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Counter Flow Ablate Condensing Facility | Upstream Exhalation Stripper Condenser | Counter-current Transpiration Condenser | Counter-flow Evaporation Condenser

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