SWL Crossflow Evaporative Condenser

Home » Products » Evaporative Condenser » SWL Crossflow Evaporative Condenser
SWL Crossflow Evaporative Condenser

1. Principle of Work
SWL evaporative condenser is a piece of high-efficiency heat exchange equipment which comes into being on the basis of adopting the internationally advanced heat-exchange technology.
The evaporative condenser uses water and air as the cooling medium. Inside, there are a water dispatching system, condensing coils, wet padding heat exchange layer, dehydrator and so on. Outside, there are a pump, electronic water treatment apparatus and a propeller fan on the top of condensing coil. The propeller fan strengthens the flow of the air and causes negative pressure inside. When the evaporative condenser works, the cooling water is sprayed from water dispatching system to the surface of condensing coils equably to form a thin layer of water film. The high-temperature gaseous refrigerant enters from the top of condensing coil and then the cooled liquid refrigerant is discharged from the bottom of the coil. During this process, high-temperature refrigerant exchanges heat with the water and air outside the coil and increased heat transfer efficiency is achieved with the help of wind. After absorbing the heat of refrigerant, some water turns into steam and is discharged by the propeller fan. Meanwhile, the moisture in the hot air is collected by dehydrator to collecting basin, and then the non-gasified cooling water flows into heat exchange layer and its heat is taken away by the airflow. The cooled water converges in the basin to be used circularly by the pump later. In addition, there is a ball cock in the basin. When the water is consumed to a certain point, the ball cock will automatically open to replenish the cooling water.

2. Parameters of SWL Crossflow Evaporative Condenser (Table 1)

Model Heat emission under normal operating mode Propeller fan Circulating water pump NH3 filling quantity Operating weight Container spec.
Quantity Blowing rate Power Flow rate Power
KW   M3/h KW M3/h KW Kg Kg
SWL-380 380 1 40000 4 45 1.5 35 3450 20*1
SWL-430 430 1 55000 4 45 1.5 40 3800 20*1
SWL-495 495 1 55000 4 45 1.5 50 4000 20*1
SWL-550 550 1 60000 4 65 2.2 65 4500 20*1
SWL-600 600 1 71000 5.5 65 2.2 65 4800 20*1
SWL-670 670 1 71000 5.5 65 2.2 75 5100 20*1
SWL-735 735 1 87000 7.5 65 2.2 75 5350 20*1
SWL-820 820 1 100000 7.5 65 2.2 80 5870 40*1
SWL-900 900 2 2×55000 2×4.0 100 3 85 7200 40*1
SWL-980 980 2 2×55000 2×4.0 100 3 97 7400 40*1
SWL-1050 1050 2 2×55000 2×4.0 100 3 97 8000 40*1
SWL-1165 1165 2 2×71000 2×5.5 65 2×2.2 124 9000 40*1
SWL-1285 1285 2 2×71000 2×5.5 65 2×2.2 124 9700 40*1
SWL-1350 1350 3 3×55000 3×4.0 130 4 130 10000 40*1
SWL-1450 1450 3 3×55000 3×4.0 130 4 149 10900 40*1
SWL-1575 1575 4 4×40000 4×4.0 130 4 149 11300 40*1
SWL-1690 1690 2 2×87000 2×7.5 65 2×2.2 149 11800 20*1+40*1
SWL-1820 1820 4 4×55000 4×4.0 100 2×3.0 160 14500 20*1+40*1
SWL-1935 1935 4 4×55000 4×4.0 100 2×3.0 186 15500 20*1+40*1
SWL-2140 2140 4 4×55000 4×4.0 100 2×3.0 229 16000 40*2
SWL-2245 2245 4 4×60000 4×4.0 100 2×3.0 229 18000 40*2
SWL-2450 2450 4 4×71000 4×5.5 100 2×3.0 230 19200 40*2
SWL-2600 2600 4 4×71000 4×5.5 100 2×3.0 253 19700 40*2
SWL-2850 2850 6 6×55000 6×4.0 100 2×3.0 260 20000 40*2
SWL-3000 3000 6 6×55000 6×4.0 100 2×3.0 270 22000 40*2

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 the SWL 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
SWL 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 or Table 3, 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: condensing temperature 36 ℃, wet bulb temperature 29 ℃.
2. Total heat emission amount of ammonia refrigeration system is 940KW.
(Compressor cooling capacity + compressor shaft power = total emission amount of heat)
3. Take a reference to table 2, heat correction index is 1.35
4. Calculate the actual load of condensers: 940KW×1.35 = 1269 KW
5. Take a reference to Table 1, select SWL-1285-type evaporative condenser, the heat emission of which is more than 1269KW.

Heat Emission Correction Index for R717 (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 0.72 0.78 0.86 0.96 1.01 1.09 1.18 1.30 1.43 1.60 1.84 2.16 2.66 - - - - - - - -
30 0.68 0.73 0.81 0.88 0.94 1.00 1.07 1.15 1.27 1.40 1.59 1.79 2.13 - - - - - - - -
31 0.64 0.68 0.74 0.82 0.86 0.91 0.97 1.04 1.12 1.22 1.36 1.52 1.74 2.06 - - - - - -
32 0.61 0.65 0.69 0.74 0.80 0.84 0.89 0.95 1.02 1.10 1.20 1.34 1.49 1.70 2.02 - - - -
33 0.57 0.61 0.65 0.70 0.73 0.78 0.82 0.87 0.92 0.99 1.07 1.16 1.29 1.45 1.66 1.96 - -
34 0.55 0.58 0.62 0.66 0.69 0.72 0.76 0.80 0.85 0.90 0.96 1.04 1.14 1.27 1.42 1.63 - -
35 0.52 0.54 0.58 0.62 0.64 0.67 0.70 0.73 0.78 0.83 0.88 0.94 1.02 1.11 1.23 1.37 1.59
36 0.50 0.52 0.55 0.59 0.61 0.63 0.66 0.69 0.72 0.75 0.81 0.86 0.92 1.00 1.09 1.22 1.35
37 0.47 0.49 0.52 0.55 0.57 0.59 0.61 0.64 0.67 0.70 0.73 0.79 0.84 0.90 0.97 1.06 1.21
38 0.45 0.47 0.50 0.53 0.55 0.56 0.58 0.60 0.62 0.65 0.68 0.72 0.76 0.82 0.88 0.96 1.04
39 0.43 0.45 0.47 0.50 0.52 0.53 0.54 0.56 0.58 0.61 0.63 0.67 0.70 0.74 0.80 0.86 0.95
40 0.42 0.43 0.45 0.48 0.49 0.50 0.52 0.53 0.55 0.58 0.60 0.62 0.66 0.69 0.73 0.78 0.85
41 0.40 0.41 0.43 0.45 0.46 0.47 0.49 0.50 0.52 0.54 0.56 0.58 0.61 0.64 0.67 0.71 0.76
42 0.39 0.40 0.41 0.43 0.44 0.45 0.47 0.48 0.49 0.51 0.53 0.55 0.57 0.60 0.62 0.66 0.70
43 0.37 0.38 0.39 0.41 0.42 0.43 0.44 0.45 0.46 0.48 0.50 0.51 0.53 0.55 0.58 0.61 0.65
44 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.46 0.47 0.49 0.50 0.52 0.54 0.57 0.60
45 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.46 0.47 0.49 0.51 0.53 0.56

Heat Emission Correction Index for R22 and R134a(Table 3)

Condensing temperature Air inlet bulb temperature (℃)
10 12 14 16 18 19 20 21 22 23 24 25 26 28
29 0.86 0.94 1.03 1.15 1.37 1.43 1.55 1.68 1.92 2.10 2.52 3.10 - - - -
31 0.77 0.83 0.90 0.99 1.10 1.17 1.24 1.34 1.47 1.62 1.83 2.10 2.48 - -
33 0.69 0.73 0.79 0.86 0.94 1.00 1.02 1.10 1.20 1.28 1.40 1.56 1.75 2.38
35 0.62 0.66 0.70 0.76 0.83 0.86 0.90 0.93 1.00 1.07 1.18 1.25 1.38 1.68
37 0.57 0.60 0.63 0.67 0.72 0.76 0.78 0.82 0.85 0.90 0.96 1.02 1.10 1.30
39 0.55 0.57 0.59 0.62 0.65 0.68 0.70 0.72 0.75 0.79 0.84 0.88 0.95 1.10
41 0.48 0.49 0.52 0.54 0.57 0.59 0.61 0.63 0.66 0.68 0.71 0.75 0.78 0.90
43 0.44 0.46 0.48 0.50 0.52 0.54 0.55 0.57 0.59 0.61 0.63 0.66 0.68 0.75
45 0.41 0.42 0.44 0.46 0.48 0.49 0.50 0.52 0.53 0.55 0.56 0.58 0.61 0.66

5. High Quality Parts
(1) Imported Galvanized Steel Sheet
The shell of SWL 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 to 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) Pump
The 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
SWL 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 SWL 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
SWL 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 4)

Type Dimensions Compensating water pipe Drain pipe Overflow pipe Air inlet pipe Water outlet pipe
A B C D E F G H
SWL-380 1850 2100 1935 1945 2200 1080 260 3880 DN25 DN50 DN65 DN65 DN65
SWL-430 1850 2300 1935 1945 2200 1080 260 3880 DN25 DN50 DN65 DN80 DN80
SWL-495 1850 2300 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN80 DN80
SWL-550 1950 2470 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN80 DN80
SWL-600 1950 2550 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN80 DN80
SWL-670 1950 2750 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN80 DN80
SWL-735 1950 2900 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN100 DN100
SWL-820 1950 3180 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN100 DN100
SWL-900 3590 2200 1935 2175 2200 1320 260 4110 DN25 DN50 DN65 DN100 DN100
SWL-980 3790 2200 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 DN100 DN100
SWL-1050 4100 2200 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 DN100 DN100
SWL-1165 1950 5060 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN80 2DN80
SWL-1285 1950 5400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN80 2DN80
SWL-1350 5060 2200 1955 2175 2220 1320 280 4130 DN32 DN50 DN65 DN125 DN100
SWL-1450 5630 2200 1955 2175 2220 1320 280 4130 DN32 DN50 DN65 DN125 DN100
SWL-1575 5630 2225 1955 2175 2220 1320 280 4130 DN32 DN50 DN65 DN125 DN100
SWL-1690 1950 6160 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-1820 3590 4400 1935 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-1935 3790 4400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-2140 4100 4400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-2245 5060 4400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-2450 5330 4400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-2600 5630 4400 1955 2175 2220 1320 260 4130 DN25 DN50 DN65 2DN100 2DN100
SWL-2850 5330 4400 1955 2175 2220 1320 280 4130 DN32 DN50 DN65 2DN125 2DN100
SWL-3000 5630 4400 1955 2175 2220 1320 280 4130 DN32 DN50 DN65 2DN125 2DN100

As a specialized evaporative condenser manufacturer and supplier in China, we also provide closed circuit cooling tower, thermosiphon liquid receiver, thermosiphon dry-mode evaporator, and more.

Related Names
Parallel Flow Evaporation Condenser | Co-current Ablate Condensing Facility | Downstream Exhalation Stripper Condenser | Uniflow Transpiration Condenser

Other Products