China wholesaler CHINAMFG Factory Price Piston/Screw/Scoll Compressor for Condensing Units/Cold Storage/Cold Room supplier

Product Description

Product description:

D series evaporator is a kind of cooling equipment suitable for various cold storages such as quick freezing fresh keeping and etc. There are 3 types available: DL DD and DJ which fits for the different cold temperatures. It has compact structure and make full use of warehouse area which can make the storage food cool rapidly and improve the freshness of storage food. DL type is suitable for fresh-keeping storehouse around O degree DD type suitable for chiller room around -18 degree DJ type is suitable for freezer room around -25 degree.

The features as follows:
The evaporator are of reasonable structure uniform frosting and high efficiency heat exchange;
The shell is made of quality steel with surface plastic-sprayedwhich is corrosion-resistant and beautiful;
The evaporator are assembled with quality fan motor with low noise big air volume and stable operation;
The evaporator adopt U-shaped stainless copper pipe evenly put into the fins which can shorten the defrosting time;
The shell materials can be produced according to customer’s requirement;
The evaporator are tested under air pressure2. 5MPa guaranteeing the products’ high gas tightness.

Product parameters: for Box L type condensing units

Model Heat exchange capacity
Adapter type
Fan Inlet pipe/ Outlet pipe(mm) Overall dimension(mm) Installation dimension(mm)
Air volume
Inlet tube
Back trachea
FNL-20 6.6 2 1*190 φ400 1*3800 380 φ10 φ16 1110*500*790 590 440
FNL-29 9.6 3 1*190 φ400 1*3800 380 φ10 φ16 1110*500*790 590 440
FNL-39 12.5 4 1*190 φ400 1*3800 380 φ10 φ16 1110*500*790 590 440
FNL-48 15.9 5 2*190 φ400 2*3800 380 φ12 φ19 1110*500*1240 590 440
FNL-58 18.1 6 2*190 φ400 2*3800 380 φ12 φ19 1110*500*1240 590 440
FNL-68 20.5 7 2*190 φ400 2*3800 380 φ12 φ19 1110*500*1240 590 440
FNL-70 22.4 8 2*230 φ450 2*5000 380 φ16 φ22 1230*560*1240 840 500
FNL-80 25.6 9 2*230 φ450 2*5000 380 φ16 φ28 1230*560*1390 900 500
FNL-90 28.8 10 2*230 φ450 2*5000 380 φ16 φ35 1330*560*1390 940 500
FNL-100 32.1 12 2*320 φ500 2*6600 380 φ16 φ35 1430*560*1390 1040 500
FNL-120 38.4 12~13 4*190 φ400 4*3800 380 φ16 φ35 1630*630*1390 1110 570
FNL-140 44.4 15 4*190 φ450 4*5000 380 φ16 φ35 1730*630*1390 1210 570


Medium and High Temperature Air-Cooled Condensing Unit Scroll Series
Model of units RX-FNL-02MH RX-FNL-03MH RX-FNL-04MH RX-FNL-05MH RX-FNL-06MH
Compressor model ZB15KQ ZB21KQ ZB29KQ ZB38KQ ZB45KQ
Applicable Temperature(ºC) 0ºC ~ -15ºC
Refrigerant R22 / R404A
Supply 380V 50Hz
Condenser Quantity of Fan(pcs) 1 1 1 2 2
Air flow(m3/h) 1*3800 1*3800 1*3800 2*3800 2*3800
Power of Fan(w) 1*190 1*190 1*190 2*190 2*190
Ref.Capacity of
condensing units
4830/4670 7571/6690 9430/9480 11700/11950 14150/14000
Power(w) 1540/1720 2270/2480 2890/3290 660/4150 4230/4700
Evaporating Temperature
Ref. Capacity(w) 4000/3820 5820/5740 7810/7790 9710/9830 11750/11500
Power(w) 1520/1760 2240/2500 2860/3310 3610/4180 4210/4730
Evaporating Temperature
Ref. Capacity(w) 2990/2710 4350/4300 5840/5840 7260/7370 8840/8630
Power(w) 1510/1840 2220/2510 2930/3330 3570/4200 4150/4760
Coupling Tube coupling φ10 φ10 φ12 φ12 φ12
Suction coupling φ16 φ16 φ19 φ19 φ19
Overall dimension Lenght (A) mm 1110 1110 1110 1110 1110
Width (B) mm 500 500 500 500 500
Height (H) mm 790 790 790 1240 1240
Installation dimension Lenght (D) mm 590 590 590 590 590
Width (E) mm 440 440 440 440 440

Medium and High Temperature Air-Cooled Condensing Unit Scroll Series
Model of units RX-FNL-07MH RX-FNL-08MH RX-FNL-10MH RX-FNL-12MH RX-FNL-15MH
CompressorModel ZB48KQ ZB58KQ ZB76KQ ZB88KQ ZB114KQ
Applicable Temperature(ºC) 0ºC ~ -15ºC
Refrigerant R22 / R404A
Supply 380V 50HZ
Condenser Quantity of Fan(pcs) 2 2 2 4 4
Air flow(m3/h) 2*5000 2*5000 2*7000 4*3800 5*5000
Power of Fan(w) 2*230 2*230 2*420 4*190 4*250
Ref. Capacity
Evaporating Temperature
Ref. Capacity(w) 15600/15750 18550/18600 24900/24700 28500 36200/36300
Power(w) 4650/5570 5470/6390 7180/8360 8130 10900/12700
Evaporating Temperature
Ref. Capacity(w) 12950/13000 15100/15300 20600/20400 23500 29500/29700
Power(w) 4630/5410 5460/6360 7130/8290 8070 10800/12650
Evaporating Temperature
Ref. Capacity(w) 9730/9800 10900/11350 15450/15250 17550 21100/21900
Power(w) 4570/5150 5470/6320 7040/8190 7970 1571/12650
Coupling Tube coupling φ16 φ16 φ16 φ16 φ16
Suction coupling φ22 φ28 φ35 φ35 φ35
Overall dimension Lenght (A) mm 1230 1230 1430 1630 1730
Width (B) mm 560 560 560 630 630
Height (H) mm 1240 1390 1390 1390 1490
Installation dimension Lenght (D) mm 840 900 1040 1110 1210
Width (E) mm 500 500 500 570 570


Why Choose Us:

1,Quick design
all these designs are ready for QUICK SHIPPING within 3 days after payment.
2,More discount
If you buy 10 pcs each design, you can get 5% DISCOUNT.
3,Quality agreements
we can CHINAMFG a quality agreements with you, which means we will accept refund all the money in case of quality.
4,Small MOQ
We welcomed small orders, which means you can buy 1 pc only to check our quality before big order.
We will provide 24h services, and set a special email for you. We will response you in 10 minutes at anytime.


Company Information:

ZHangZhoug CHINAMFG Refrigeration Technology Co., LTD founded in located in HangZhou,ZHangZhoug Province, which is near to HangZhou and HangZhou.

We are a manufacturer engaged in the production of semi-hermetic refrigeration compressors, the assembly of various brands of compressors and the processing, design and maintenance of spare parts.

Our main products cover all kinds of cold storage, cold storage, fresh keeping and other cold storage and constant temperature workshops, industrial chillers, various types of non-standard process refrigeration and other equipment. We also have a strong R&D team that independently developed box condensing units, open units, water-cooled compression condensing units, air-cooled condensing units, all-in-1 and split units, low-temperature screw units, parallel units, industrial chillers, D series Air cooler, series double-sided side outlet air cooler, water flush frost air cooler series, air-cooled condenser series, etc. Products are exported to more than 80 countries and regions around the world.

Our philosophy is “technology leads industry, service creates market”. We adhere to the first-class technology, first-class products, first-class service, and constantly meet the needs of customers.


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Warranty: 1 Year
Type: Air-Cooled
Cooling Water: Seawater
System Type: Open System
Fans Species: Axial Fan
Noise Level: Low


air compressor

What Safety Precautions Should Be Taken When Operating Screw Compressors?

When operating screw compressors, it is important to follow specific safety precautions to ensure the well-being of personnel and prevent potential accidents. Here’s a detailed explanation:

1. Familiarize Yourself with the Equipment:

  • Before operating a screw compressor, thoroughly read and understand the manufacturer’s instructions, safety guidelines, and operating procedures. Familiarize yourself with the specific features, controls, and safety devices of the compressor.

2. Wear Appropriate Personal Protective Equipment (PPE):

  • Wear the necessary PPE, such as safety glasses, hearing protection, gloves, and appropriate clothing, when operating the compressor. PPE helps protect against potential hazards, including flying debris, noise, and contact with hot or moving parts.

3. Ensure Proper Ventilation:

  • Operate the screw compressor in a well-ventilated area to prevent the buildup of potentially harmful gases or fumes. Ensure that the compressor’s intake and exhaust vents are not obstructed, allowing for adequate airflow.

4. Compressor Location:

  • Position the compressor on a stable and level surface to prevent tipping or instability during operation. Ensure that the compressor is located away from flammable materials, heat sources, or sources of ignition.

5. Electrical Safety:

  • Follow electrical safety guidelines and ensure that the compressor is properly grounded. Avoid using damaged or frayed electrical cords and ensure that the electrical connections are secure.

6. Lockout/Tagout Procedures:

  • Before performing any maintenance or repair tasks on the compressor, follow lockout/tagout procedures to isolate electrical power and prevent accidental startup. Lockout/tagout procedures help protect against unexpected energization of the compressor or its components.

7. Pressure Relief:

  • Before performing any maintenance tasks or opening the compressor, ensure that all pressure has been relieved from the system. Follow proper procedures for depressurizing the compressor and associated piping to avoid sudden releases of pressure.

8. Hot Surfaces:

  • Be cautious of hot surfaces, such as compressor casings, piping, or discharge components. Allow sufficient cooling time before touching or performing maintenance tasks on hot surfaces to avoid burns.

9. Maintenance and Inspection:

  • Adhere to the manufacturer’s recommended maintenance schedule and perform regular inspections of the compressor. Replace any worn or damaged components promptly to prevent potential hazards or malfunctions.

10. Emergency Procedures:

  • Be familiar with emergency procedures, including how to shut down the compressor in case of an emergency, how to respond to leaks or spills, and how to handle fire or electrical incidents. Have emergency contact information readily available.

11. Training and Qualified Personnel:

  • Ensure that operators and maintenance personnel are adequately trained in the safe operation and maintenance of screw compressors. Only allow qualified personnel to perform maintenance or repair tasks.

It is essential to consult the specific safety guidelines provided by the manufacturer of the screw compressor as they may include additional precautions or recommendations.

In summary, when operating screw compressors, it is important to familiarize yourself with the equipment, wear appropriate PPE, ensure proper ventilation, follow electrical safety measures, implement lockout/tagout procedures, be cautious of hot surfaces, perform regular maintenance and inspections, and be prepared with emergency procedures. By following these safety precautions, the risk of accidents or injuries can be minimized, ensuring a safe working environment when operating screw compressors.

air compressor

How Do Screw Compressors Contribute to Energy Savings?

Screw compressors offer several features and advantages that contribute to energy savings. Here’s a detailed explanation:

1. Efficient Compression Process:

Screw compressors are known for their efficiency in compressing air or gas. They use a unique rotary screw design, where two intermeshing screws rotate to compress the air. This design provides continuous and smooth compression, resulting in less energy loss compared to other compression technologies, such as reciprocating compressors. The efficient compression process of screw compressors helps reduce energy consumption.

2. Load and Unload Operation:

Screw compressors often incorporate load and unload operation, also known as capacity control. This feature allows the compressor to match its output to the actual demand for compressed air. During periods of lower demand, the compressor unloads by disengaging some of its capacity. This reduces power consumption since the compressor is not operating at full load continuously. By adjusting the compressor’s output to match the required air flow, load and unload operation helps save energy.

3. Variable Speed Drive (VSD) Technology:

Many screw compressors are equipped with Variable Speed Drive (VSD) technology. A VSD allows the compressor’s motor speed to be adjusted according to the demand for compressed air. By running the compressor at lower speeds during periods of lower demand, the energy consumption can be significantly reduced. The VSD technology enables precise control over the compressor’s output, resulting in energy savings and improved efficiency.

4. Air Leakage Reduction:

A common source of energy loss in compressed air systems is air leakage. Screw compressors are designed to minimize air leakage through improved sealing mechanisms and enhanced construction materials. By reducing air leakage, the compressor can operate more efficiently, as less energy is wasted in compressing air that escapes before reaching the intended point of use. Regular maintenance and monitoring practices help identify and address air leakage issues, further contributing to energy savings.

5. Integrated Energy Recovery:

In certain applications, screw compressors can be configured to recover and utilize the heat generated during the compression process. This recovered heat can be used for various purposes, such as space heating, preheating process air or water, or powering other thermal processes. By utilizing the recovered heat energy, screw compressors enhance overall energy efficiency and reduce the need for additional heating systems.

6. System Optimization and Controls:

Screw compressors often feature advanced control systems that optimize their operation for energy efficiency. These control systems monitor various parameters, such as system pressure, air demand, and temperature, and adjust the compressor’s operation accordingly. By continuously analyzing the system requirements and making intelligent adjustments, the control systems help minimize energy waste and maintain optimal performance.

7. Maintenance and Proper Operation:

Regular maintenance and proper operation of screw compressors are essential for maximizing energy savings. Routine maintenance activities, such as cleaning air filters, checking lubrication levels, and inspecting and repairing leaks, ensure the compressor operates at peak efficiency. Additionally, proper operation practices, such as avoiding excessive idling or overloading, contribute to energy savings and prolong the compressor’s lifespan.

In summary, screw compressors contribute to energy savings through their efficient compression process, load and unload operation, variable speed drive technology, air leakage reduction, integrated energy recovery, system optimization, and proper maintenance and operation. By utilizing these features and implementing energy-conscious practices, industries can significantly reduce energy consumption and lower operating costs in compressed air systems.

air compressor

Can Screw Compressors Handle High-Pressure Applications?

Yes, screw compressors are capable of handling high-pressure applications. Here’s a detailed explanation:

Screw compressors are known for their ability to deliver high-pressure compressed air or gas. The design of screw compressors allows them to achieve higher pressure ratios compared to other types of compressors, such as reciprocating piston compressors.

The compression process in screw compressors is continuous and smooth, which enables them to handle high-pressure requirements efficiently. The intermeshing rotors create compression chambers that gradually reduce in volume, resulting in the compression of air or gas. By adjusting the rotational speed of the rotors and optimizing the design parameters, screw compressors can generate the desired high discharge pressures.

However, it’s important to note that the maximum pressure capability of a screw compressor may vary depending on factors such as:

  • 1. Compressor Design: The design features of the screw compressor, including the rotor profile, sealing mechanism, and cooling system, can influence its maximum pressure capacity.
  • 2. Rotor Size and Speed: The size and rotational speed of the rotors impact the compression ratio and, consequently, the achievable discharge pressure. Larger rotors and higher rotational speeds generally allow for higher pressure ratios.
  • 3. Drive Power: The power of the drive motor connected to the screw compressor affects its ability to handle high-pressure applications. Adequate power is necessary to overcome the resistance and maintain the desired compression ratio.
  • 4. Structural Integrity: The structural integrity and material strength of the compressor housing, rotors, and other components determine the maximum pressure that the compressor can withstand without failure or leakage.

It’s important to select a screw compressor with the appropriate specifications and consult the manufacturer’s guidelines to ensure that it can handle the specific high-pressure requirements of the application.

Additionally, it’s worth noting that high-pressure applications may also require additional equipment, such as pressure vessels or downstream pressure regulators, to safely handle and control the compressed air or gas at the desired pressure levels.

China wholesaler CHINAMFG Factory Price Piston/Screw/Scoll Compressor for Condensing Units/Cold Storage/Cold Room   supplier China wholesaler CHINAMFG Factory Price Piston/Screw/Scoll Compressor for Condensing Units/Cold Storage/Cold Room   supplier
editor by CX 2024-05-15

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