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Industrial Process Cooling 50HP Machine Semi-hermetic screw Compressor Air-cooled Screw Chiller
Air-cooled screw chillers are widely used in the centralized chilled water supply solutions for the plastics industry. The characteristics of air-cooled screw chillers for the plastics industry mainly include high efficiency and stability, wide range of cooling capacity adjustment, easy operation, low noise, strong adaptability and low maintenance cost. These characteristics make air-cooled screw chillers perform well in the plastics industry and meet various refrigeration needs.
Main features of air-cooled screw chillers
The main features of air-cooled screw chillers include the following aspects:
High efficiency and stability: air-cooled screw chillers use advanced screw compressors with high energy efficiency ratio and stability, which can ensure the refrigeration effect while effectively reducing energy consumption.
Wide range of cooling capacity adjustment: By adjusting the speed of the compressor and the flow rate of the refrigerant, the cooling capacity can be adjusted steplessly to meet the refrigeration needs under different working conditions.
Easy operation: It adopts an intelligent control system with functions such as remote monitoring, fault diagnosis and automatic protection, which is easy to operate and maintain.
Low noise: It adopts low noise design and noise reduction technology to effectively reduce the noise during equipment operation and meet environmental protection requirements.
Strong adaptability: It is suitable for the refrigeration needs of various industries, such as chemical, pharmaceutical, food processing and other fields, and has a wide range of applicability.
Low maintenance cost: It adopts special materials such as wear-resistant and corrosion-resistant, has a long service life, low daily maintenance cost, and has a high cost performance.
Compact structure: The unit has a compact structure, small footprint, simple pipeline design, and easy installation and maintenance.
Intelligent control: The unit can automatically adjust the output of the compressor according to load changes to maintain optimal efficiency.
Multiple protection functions: It provides high and low pressure protection, chilled water anti-freezing protection, power supply phase sequence protection, phase loss protection, water flow shortage protection, compressor motor overheating and other multiple protection functions.
More Pictures of air cooled screw chiller
100HP Air cooled screw chiller
120HP/ 140HP/ 150HP Air cooled screw chiller
The working principle of the air-cooled screw chiller mainly includes the following steps:
Compression system: The unit contains a compressor inside, which compresses low-pressure gas into high-pressure gas and pushes it into the condenser.
Condensation system: The high-pressure gas flows through the condenser, dissipates heat through the radiator, and is cooled to become a high-pressure liquid refrigerant.
Expansion system: The high-pressure liquid refrigerant enters the evaporator through the expansion valve. At this time, the liquid refrigerant will become low-temperature steam due to the sudden decompression, absorbing the surrounding heat to cool the air or chilled water.
Evaporation system: The low-temperature steam returns to the compressor and is recompressed into high-pressure gas in a cyclic manner, and the process continues to circulate, thereby achieving the cooling effect.
In addition, the air-cooled screw chiller also involves the chilled water circulation and the heat dissipation air process:
Chiller water circulation: After the chilled water absorbs heat from the evaporator, the temperature is reduced, and then it is sent to the user system for refrigeration. In the user system, the chilled water transfers heat to the object or space that needs to be refrigerated, and then returns to the evaporator to be cooled again, forming a closed-loop cycle.
Cooling air: The unit dissipates heat through fans and heat exchangers, absorbing air from the natural environment and sending it to the radiator of the condenser. The high-temperature refrigerant in the radiator transfers heat to the air, raising the air temperature, and then continuously inhales new air to dissipate heat, thereby maintaining the low temperature state of the condenser.
Compared with other types of chillers, the advantage of air-cooled screw chillers is that they do not require additional cooling water sources and are more convenient to use. However, due to the high noise of the unit itself, it usually needs to be installed in a closed machine room to reduce the impact of noise on the surrounding environment.
Compressor features:
•New screw type compressor with 20%-30% higher in efficiency.
•Cooling capacity control available at four steps (100%-75%-50%-25%), three steps (100%-66%-33%) or no steps control system.
•High efficiency, low noise and vibration, easy to install.
•Environmental protection refrigerant R134a, R407c available.
Control operation system:
•SIEMENS PLC program control system, human-computer interface with big LED touch panel, running state displaying in multi-language, and self-diagnosis for easy operation and supervision.
•Extended industrial interface, convenient for being computer monitor via network.
Completely safety protection function:
•Multi-safety protection by high and low pressure, compressor overheating, overloading, over temperature, flow switch, phase sequence, phase-missing, exhaust overheating and anti-freezing.
Item Model | OMC-100ADH | OMC-120ADH | OMC-150ADH | OMC-170ADH | OMC-200ADH | OMC-240ADH | ||
Cooling Capacity | kcal/h | 282080 | 302376 | 404200 | 477988 | 562268 | 658416 | |
KW | 328 | 351.6 | 470 | 555.8 | 653.8 | 765.6 | ||
Ton | 93.3 | 100.0 | 133.6 | 158.0 | 185.9 | 217.7 | ||
Btu/h | 1119454 | 1200000 | 1604096 | 1896928 | 2231399 | 2612969 | ||
Input Power | KW | 99.4 | 112.6 | 152.2 | 179 | 210.4 | 238.4 | |
Max.running Current | A | 242 | 264 | 342 | 394 | 464 | 554 | |
Power | 3PH-380V/415V 50Hz (3PH-220V/440V 60Hz ) | |||||||
Refrigerant | Type | R22 ( R407C ) | ||||||
Charge quantity | kg | 70 | 84 | 106 | 120 | 140 | 170 | |
Control Mode | Expansion Valve | |||||||
Compressor | Type | Semi-Hermetic Screw | ||||||
Power | KW | 46.1 x 2 | 51.9 x 2 | 69.9 x 2 | 81.7 x 2 | 96.2 x 2 | 109.4 x 2 | |
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 | 56.4 | 60.5 | 80.8 | 95.6 | 112.5 | 131.7 | |
Pipe Diameter | lnch | 3" | 3" | 3" | 3" | 4" | 4" | |
Condenser | Type | Air cooled high-efficient inner threaded copper-tubing aluminum fin type | ||||||
Fan | Type | Low noise outer rotor | ||||||
Power | KW | 7.2 | 8.8 | 12.4 | 15.6 | 18 | 19.6 | |
Cooling air flow | m3/h | 100000 | 120000 | 150000 | 170000 | 200000 | 240000 | |
Safety Protection | compressor over heat protection, over load protection,high and low pressure protection,reversed and lacking phase protection, anti-freezing protection, flow switch | |||||||
Dimension | Length | mm | 4000 | 4800 | 6200 | 6800 | 7800 | 8400 |
Width | mm | 1950 | 1950 | 2000 | 2000 | 2000 | 2000 | |
Height | mm | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | |
Net Weight | kg | 2860 | 3250 | 4200 | 4450 | 4850 | 5300 | |
Running Weight | kg | 3020 | 3460 | 4430 | 4680 | 5120 | 5630 |
Air-cooled screw chiller is a common industrial cooling equipment with the following advantages:
Air cooled screw chiller cooling capacity various from 100KW to 800KW. Air cooled screw chillers have several advantages:
No water requirement: Unlike water cooled chillers, air cooled screw chillers do not require a constant water supply or a cooling tower. This eliminates the need for water treatment and reduces water consumption and costs.
Easy installation: Air cooled screw chillers are relatively easy to install since they do not require a separate cooling water system. This simplifies the installation process and reduces the overall installation costs.
Flexibility in location: Air cooled screw chillers can be installed in various locations since they do not rely on a nearby water source. This makes them suitable for buildings or industrial facilities where water availability is limited or difficult to access.
Lower maintenance costs: Air cooled screw chillers typically have lower maintenance costs compared to water cooled chillers. They don't require regular cleaning or maintenance of cooling towers, condenser tubes, or water treatment systems, which can save both time and money.
Efficient operation: Air cooled screw chillers are designed with advanced screw compressors that provide efficient cooling performance. They can handle high heat loads and offer precise temperature control, ensuring optimal operation and energy efficiency.
Space saving: Air cooled screw chillers do not require a separate cooling tower, reducing the overall space requirements. This makes them suitable for installations where space is limited or where the use of a cooling tower is not feasible.
Environmental friendliness: Air cooled screw chillers have a lower environmental impact compared to water cooled chillers. They do not consume large amounts of water or require chemicals for water treatment, reducing water consumption and the risk of water pollution.
Overall, air cooled screw chillers offer advantages such as easy installation, flexibility in location, lower maintenance costs, efficient operation, space savings, and environmental friendliness. These factors make them a preferred choice for various cooling applications.
Application fields of air-cooled screw chillers
Air-cooled screw chillers are widely used in many fields, mainly including industrial production, commercial refrigeration, laboratories and scientific research institutions, and other special application scenarios.
Industrial production
Air-cooled screw chillers are widely used in industrial production, including:
Chemical industry: used to cool reactors, cooling towers and other equipment to ensure the smooth progress of chemical reactions.
Pharmaceutical industry: used to cool pharmaceutical production equipment to ensure the quality and safety of pharmaceuticals.
Food processing: used to cool food processing equipment to maintain the freshness and quality of food.
Plastic processing: used to cool injection molds, extruders and wire drawing equipment to improve product accuracy and surface quality.
Metal processing: used to cool various machine tools and processing equipment to ensure the normal operation of equipment and improve product quality.
Commercial refrigeration
Air-cooled screw chillers also have important applications in the field of commercial refrigeration, including:
Shopping malls, supermarkets, hotels: used to keep the indoor temperature comfortable and provide a good shopping or accommodation environment.
Data Center: Used to cool servers and other electronic equipment, improve operating efficiency, reduce energy consumption and carbon emissions.
Commercial Buildings: As part of the central air-conditioning system, it provides stable cooling effect and creates a comfortable indoor environment.
Laboratories and Scientific Research Institutions
In laboratories and scientific research institutions, air-cooled screw chillers are used to accurately control temperature and humidity to ensure the accuracy and reliability of experimental results. For example:
Biological laboratory: Used to control experimental temperature and ensure the accuracy of experimental results.
Chemical laboratory: Used to cool reactors and other experimental equipment to ensure the smooth progress of chemical reactions.
Other application scenarios
In addition, air-cooled screw chillers are also used in other occasions that require long-term stable refrigeration, such as: Office buildings: Used in central air-conditioning systems to improve indoor comfort.
Computer room: Used to cool servers and other electronic equipment to ensure the stable operation of equipment.
Dust-free workshop: Used to control temperature and humidity to ensure the stability of the production environment.
Package air-cooled chillers offer several advantages:
Easy Installation: Package air-cooled chillers come as a compact unit, preassembled and pre-tested, which makes them easy to install and reduces the need for additional components or complex piping systems.
Space Saving: Package air-cooled chillers are designed to have a small footprint, making them suitable for installations where space is limited, such as rooftops or equipment rooms.
Independent Cooling System: Package air-cooled chillers are self-contained units with built-in cooling systems, eliminating the need for an external cooling tower or water source. This independence allows for flexibility in installation location.
Energy Efficiency: Package air-cooled chillers often incorporate advanced compressor technology and energy-saving features such as variable speed drives, improving overall energy efficiency and reducing operational costs.
Low Maintenance: Package air-cooled chillers are designed with easy access points for maintenance and service, allowing for convenient cleaning, component inspections, and repairs.
Cost-effective: Package air-cooled chillers typically have lower upfront costs compared to larger central plants or water-cooled systems. They also require less maintenance and operational costs, resulting in long-term cost savings.
Versatility: Package air-cooled chillers can be used in a variety of applications, including commercial buildings, data centers, industrial processes, laboratories, and more, providing cooling solutions for different cooling loads and requirements.
Overall, package air-cooled chillers offer the benefits of easy installation, space-saving design, energy efficiency, low maintenance, cost-effectiveness, and versatility, making them a popular choice for many cooling applications
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;
6)Voltage;
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 compressors and refrigeration accessories . 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: What's 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: Send inquiry to us or Call us.