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NECM Series Evaporative Condenser

NECM Series Evaporative Condenser

NECM series counter flow evaporative condenser uses water and air as cooling media to exchange heat with the high-temperature gaseous cooling in the coil, and the refrigerant condenses from gaseous state to liquid state. 



Features

♦  Easy transportation and installation
♦  Small area and low comprehensive investment
♦  Low operating cost, energy saving and environmental protection
♦  Lightweight operation and small footprint
♦  Steel structure support
              

Components Instruction

 

Axial Flow Fan

Uses cooling tower special aluminum alloy axial flow fan,forward type blade structure design, small wind resistance, big air volume, low noise, good performance, high efficiency. Streamline high strength fan stack gurantees airflow uniform through the fan inlet and outlet area, maximum reduce the energy comsuption. Fan motor's protection class: IP55, Insulation class: F class.

 

Cooling coil

Cooling coils as the core parts of closed cooling tower, are maded up of great quality copper coil or steel coil. Coil inside is through cooling medium, outside is cooled by water spray to meet the cooling requirement.
Steel coils (G type) are used by high quality Ф25 mm seamless fluid tube, and processed by H.D.G.(hot dip galvanised) to enhance the coil pipe anti-corrosion ability, extend service life.
Copper coils (T type) are used by T2 deoxidized acid copper tube, silver electrode is used to connect between the copper pipe and elbow welding, low solder joint and good quality, design pressure is 1.2MPa.

 

Aluminium Zinc Plate

Shell plate uses imported aluminium zinc plate, which is one of the strongest corrision resistance plate, service life is 3-6 times of ordinary galvanized sheet, with strong termal resistance, high heat resistance, beautiful appearance, ect.

 

Spray pump

Used great mechanical seal to prevent from the leakage, made by dedicated outdoor motor, and special configuration imported bearings, to ensure that the fan, water pump has long term reliable operation, low power, large flow, low noise, excellent performance, etc. The pump body is precision casting, strong and long service life.

 

Drift Eliminator

Original detachable eliminator adopts good performance PVC material, its special structure could change the air flow direction, effectively remove from the wet air moisture in the air, redeased the drift loss below 0.001%, maximum save the water, what's more, to make sure the area around cooling tower no pollution, and prevent from the germs spreading.

 

High Efficiency film fills

Hanging film type fill which spreads the water into a thin film, flowing over large vertical surfaces, promoting maximum exposure to air flow. It incorporates highly efficient cellular eliminators and louvers, integrally molded within the fill sheets, preventing water from escaping and assuring precise air distribution throughout wide variations in airflow. Unlike towers equipped with separate external louvers, this fill operates virtually icefree even in extremely cold weather.

 

Advanced Water Distribution System

The spray system uses in a variety of high flow rate and anti clogging basket type nozzles, to ensure the continuous uniform water spraying on the surface of the coil. Under the help of induced air, water can cover all the coils to the utmost extent to do the complete heat exchage among water, air and refrigerant. In this case, heat transfer efficiency will increase dramatically. The nozzle is connected on spray pipe branch. When cleaning, the nozzles and spray pipe branch can be easily dismounted.
 

Optional Accessories

♦ Noise reduction upgrade                      ♦ Anti-Freeze heater
♦ Vibration isolator                                  ♦ Stainless steel casing and framework / bolts and nuts (304 / 316)
♦ High-temperature upgrade                   ♦ Dual-speed Motor & VFD motorAnti-Freeze heater

 

For more detailed description and specification, please click the above Download to get more information about NECM series counter flow evaporative condensers. 

Technical Specification of NECM Series Cooling Tower
 
 Item Heat 
Rejection
Capacity 
(KW)
Dimension (mm) Axial Fan Spray Pump NH3 
 Ammonia 
Charge 
 (kg)
Weight (kg)
 Model Length Width Height Air 
Volume  
(m³/h)
Power 
(Kw)xQty
Flow
 (m³/h)
Power 
(Kw)
Dry Wet
NECM-40 40 1150 900 1920 10500 0.55 14 0.75 8 350 600
NECM-64 64 1150 1150 1920 13050 0.75 14 0.75 9 400 700
NECM-80 80 2000 1150 2200 26100 0.75*2 30 1.1 11 520 1000
NECM-120 120 2000 1150 2200 26100 0.75*2 30 1.1 13 570 1100
NECM-160 160 2500 1150 2200 36600 1.1*2 40 1.5 18 650 1600
NECM-200 200 2500 1150 2350 36600 1.1*2 40 1.5 28 750 1700
NECM-280 280 2500 1400 2650 40600 1.5*2 40 1.5 41 850 1800
NECM-320 320 2500 1400 2650 40600 1.5*2 60 1.5 43 1050 2000
NECM-400 400 2500 1400 2650 46900 2.2*2 60 1.5 45 1250 2300
NECM-480 480 2500 1400 2650 53000 2.6*2 60 1.5 65 1350 2400
NECM-560 560 3000 1400 2850 63800 3.5*2 65 2.2 65 1650 3000
NECM-640 640 3000 1400 2850 90000 4*2 65 2.2 81 1850 3300
NECM-800 800 3000 2180 2850 90000 4*2 110 3 83 2050 3800
NECM-1000 1000 3518 2180 3250 110000 5.5*2 110 3 109 2450 4300
NECM-1200 1200 3518 2180 2850 150000 7.5*2 110 3 120 3150 4300
NECM-1400 1400 4010 2980 3910 180000 7.5*2 170 5.5 142 3700 7100
NECM-1600 1600 4010 2980 3910 220000 7.5*2 170 5.5 166 4180 7600
NECM-2000 2000 4510 2980 3910 300000 11*2 170 5.5 220 5050 8900
NECM-2400 2400 7036 2180 2850 300000 7.5*4 220 3*2 237 6300 8600
NECM-2800 2800 8020 2980 3910 360000 7.5*4 340 5.5*2 283 7400 14200
NECM-3200 3200 8020 2980 3910 440000 7.5*4 340 5.5*2 330 8360 15200
NECM-4000 4000 8020 2980 3910 600000 11*4 340 5.5*2 438 10100 17800
 
 Instructions for Selection
 1. Confirm condensing temperature, wet bulb temperature.
 2. Calculate total heat abstraction amount that goes through system to condensers.
 3. Take a reference to below Graph 1 or Graph 2, select heat abstraction amount correction index.
 4. Total amount of heat abstraction multiplies heat correction index equals to the condensing load during the working
 conditions.
 5. Take a reference to Graph Specification sheet, select the heat abstraction amount data which is bigger or equivalent to
the data after correction.


Gragh 1: Heat Emission Correction Index for R717
 
Condensing
Pressure
(Kpa)
Condensing
Temp.
(°C)
Air Inlet Wet Bulb Temp. (°C)
18 19 20 21 22 23 24 25 26 27 28 29 30
1063 30 1.40  1.51  1.63  1.79  1.99  2.24  2.56  3.00           
1133 32 1.18  1.25  1.32  1.43  1.55  1.70  1.88  2.11           
1206 34 1.02  1.07  1.12  1.19  1.28  1.36  1.48  1.61  1.80  2.06       
1245 35 0.95  0.99  1.03  1.08  1.15  1.23  1.30  1.39  1.53  1.69  1.90  2.15  2.47 
1284 36 0.89  0.92  0.96  1.01  1.07  1.13  1.20  1.28  1.39  1.53  1.70  1.91  2.17 
1365 38 0.78  0.81  0.83  0.86  0.90  0.94  0.99  1.05  1.12  1.21  1.31  1.44  1.59 
1451 40 0.70  0.72  0.74  0.76  0.80  0.83  0.87  0.91  0.96  1.02  1.09  1.18  1.29 
1530 42 0.63  0.64  0.66  0.68  0.71  0.74  0.76  0.80  0.84  0.88  0.93  0.99  1.06 
1630 44 0.56  0.58  0.59  0.61  0.63  0.65  0.67  0.70  0.76  0.76  0.79  0.83  0.86 

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