Central Chiller Air Cooled Screw Type Bitzer Compressor

Central Chiller Air Cooled Screw Type Bitzer Compressor.  Cooling Capacity Range from  30 Ton to 500 Ton optional. Single compressor or Double compressor Optional. 
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Central Chiller Air Cooled Screw Type Bitzer Compressor

Central Chiller is a chiller which can provide cooling water for several Processes. It can be Air cooled type chiller or water cooled type chiller, It can be screw type chiller or scroll type chiller. Central Chiller Air Cooled Screw Type Bitzer Compressor is a type of High efficient Air Cooled Chiller. Compare with the Air Cooled Scroll Type Chiller, its Cooling Capacity range is large. The Compressor is semi-hermetic screw type. The Screw Compressor Features are below: 

(1) All rolling bearings are used
The radial bearings use cylindrical bearings, and the thrust bearings use ball thrust bearings to withstand the axial thrust of the rotor. The clearance of these rolling bearings is smaller than that of the sliding bearings, which can keep the rotor shaft stable, thereby reducing the rotor clearance and reducing leakage losses.
(2) Differential pressure oil supply
The difference between the exhaust pressure and the pressure at the bearing is used to supply oil, and no oil pump is provided, which simplifies the lubrication oil supply system.
(3) There is an oil mist eliminator inside the machine
The inhaled gas first passes through the motor, cools the motor, and enters the cylinder to be compressed and discharged. An oil mist eliminator is installed in the exhaust cylinder to separate the oil droplets from the gas. Therefore, there is no need to install an oil separator in the system. The unit device structure compact.
(4) Stepless adjustment of air delivery
The stepless adjustment of the compressor air volume by means of a movable slide valve is better than the stepwise refrigeration capacity adjustment of a reciprocating compressor.
(5) Spray cooling
When the exhaust temperature of the semi-hermetic screw compressor is high, the lubricating oil temperature rises too high, and the compressor motor is often easily burned. For this reason, the injection liquid refrigeration method can be used to cool down to ensure that its working condition is in the compressor. The scope of work limits.

Oumal Refrigeration is a leading screw chiller manufacturer. The Central air cooled screw chiller price from oumal chiller is competitive, we have experienced engineers to provide you Professional solution for your industril cooling systems. If you are looking for central chillers, please contact us. Will reply you as soon as possible.

Air Cooled Central Chiller Products Information

1. The compressor adopts the international brand. The original imported international brand BITZER Germany (Bitzer) , a new type of high-efficiency screw rotor compressor, the efficiency is 20%-30% higher than the general compressor.
2. High efficiency 5:6 patented asymmetric rotor tooth profile.
3. Capacity control can adopt four-stage (100%-75%-50%-25%) or three-stage (100%-66%-33%) and stepless control system.
4. The combined design of 11 bearings and a-type axial thrust balance drum greatly increases the bearing life by 2.5-3.5 times.
5. The use of high-efficiency silicon steel sheet special groove design, and equipped with internal and external omnidirectional design cooling channel, so that the compressor motor can play the highest efficiency under any load.
6. The unique built-in oil pressure system does not need an oil pump to ensure that the compressor maintains the best lubrication effect. The oil separator adopts a double-layer filter method, which has a good oil filtering effect and the heat exchanger can exert its maximum capacity.
7. High efficiency, low noise and low vibration.
8. A variety of refrigerants are available. In addition to R22 refrigerant, environmentally friendly refrigerants such as R134a and R407c can also be used.

Screw type air chiller Product Display

●: Chiller cooling capacity from 30Ton to 500Ton
●: Hanbell / Bitzer Semi-hermetic screw type compressor
●: Large Copper condensing Coil with Aluminum Fins
●: No water tank, connect an external water tank
●: Temperature control from 7℃to 35℃
●: Closed loop shell and tube evaporator
●: Schneider Electrical Components
●: PLC/ Touch Screen Control Panel
●: No need to install a cooling tower

Bitzer Screw Compressor Chiller

Application range of central chiller:

Central chiller used in many industry, Such as Plastic industry, Electronics industry, Electroplating industry, Construction industry, Vacuum coating, Food industry, Chemical fiber industry, Dairy products, beverages; Medicines, biological products.

Aquaculture; hotels, seafood restaurants, seafood farms, aquariums, providing frozen water in summer and heat in winter.

central chiller application

Air Cooled Screw Chiller Product Specification

Item                    Model OMC-40ASH OMC-50ASH OMC-60ASH OMC-75ASH OMC-85ASH OMC-100ASH OMC-120ASH
Cooling Capacity kcal/h              107156 141040 151188 202100 238994 281134 329208
KW  124.6 164 175.8 235 277.9 326.9 382.8
Ton 35.4 46.6 50.0 66.8 79.0 92.9 108.8
Btu/h 425256 559727 600000 802048 948464 1115700 1306485
Input Power KW  40.8 49.7 56.3 75.3 88.3 103.4 118.2
Max.running current A 95 121 132 171 197 232 277
Power 3PH-380V/415V 50Hz (3PH-220V/440V 60Hz )
Refrigerant Type R22 ( R407C )
Charge quantity kg 28 35 42 53 60 70 85
Control Mode Expansion Valve
Compressor Type Semi-Hermetic Screw
Power KW  37.4 46.1 51.9 69.9 81.7 96.2 109.4
Start-up Mode Y-△
Capacity control 0-25-50-75-100 (0-33-66-100)
Evaporator Type Shell and Tube
Chilled water flow m3/h 21.4 28.2 30.2 40.4 47.8 56.2 65.8
Pipe Diameter lnch 3" 3" 3" 3" 4" 4" 4"
Condenser Type Air cooled high-efficient inner threaded copper-tubing aluminum fin type
Fan Type Low noise outer rotor
Power KW  3.4 3.6 4.4 5.4 6.6 7.2 8.8
cooling air flow m3/h 40000 50000 60000 75000 85000 10000 120000
Dimension Length mm 2000 2200 2500 3200 3500 4000 4800
Width mm 1500 1700 1850 1950 1950 1950 1950
Height mm 2000 2000 2150 2200 2200 2200 2200
Net Weight kg 1300 1620 1930 2260 2420 2860 3250
Running Weight kg 1390 1870 2210 2420 2680 3020 3460
safety protection: compressor over heat protection, over load protection,high and low pressure protection,reversed and lacking phase protection, anti-freezing protection, flow switch

Packing & Shipping

water chiller delivery


Q1: Could you help us to recommend the model for our project?

A1: Yes, we have engineer to check the details and make the scheme for you. Based on the following:

1)Cooling capacity;

2)chilled water inlet and outlet temperature

3)chilled water flow

4) Refrigerant;

5) Ambient temperature;


7) Be used for what industry?

8)Any other special requirements?

Q2: How to ensure your product with good quality?

A2: All our products with CE certificate. And use the well-know brand accessories, such as copeland, danfoss,Hanbell, Bitzer compressor Emerson expansion Valve, Siemens controller.

also can be customized. All OUMAL Chillers are factory tested under load conditions to ensure good quality and easy installation for users

Q3: What's the warranty?

A3: 15 months warranty for free if confirmed by both side damage in the quality reason.

Q4: Whats your payment term?

A4: We accept T/T, LC, Western Union, etc. Normally, 30% deposit for production, 70% balance before shipment.

Q5: Are you a manufacturer?

A5: Yes, we have more than 15 years in water chiller business. Also have patent on the water chiller appearance.

The control box design make the unit safety and stably.

Q6: How can i Place an order ?

A6: Click Below to fill the table or Call 0086 15112554736

Want to know about this product?

Something isn’t Clear?

Feel free to contact me, and I will be more than happy to answer all of your questions.

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