Product Features

1. Compressor

High-efficiency and economical famous brand semi-hermetic twin-screw compressor is adopted, with high energy efficiency ratio, reliable operation and long service life; semi-hermetic design, with only three moving parts, has the characteristics of less parts and low failure rate; it can realize graded and stepless energy Adjustment and control are flexible and convenient, energy-saving, efficient and easy to maintain. The energy adjustment of the standard unit is controlled in stages.

2. Shell and tube heat exchanger

(1) The internal thread is used to strengthen the high-efficiency heat exchange tube, and the efficiency is extremely high

(2) It is convenient for the compressor to return oil, and there is no danger of freezing and cracking the heat exchange tube

(3) Less working medium charge

(4) Not high requirements on water quality

(5) The heat exchanger of the heat pump unit and the annual refrigeration unit is wrapped with an antifreeze electric heating belt to avoid the danger of freezing

3. Air-cooled heat exchanger

The finned copper tube heat exchanger is adopted, and the axial flow fan is used for forced convection heat exchange. The internally threaded copper tube arranged in the fork row is expanded and connected to the corrugated aluminium fin, and the motor directly drives the low-noise spiral axial flow fan, which has low operating noise and small vibration.

1: Low costs operation and maintenance

Precise water temperature control prevents waste caused by unnecessary overcooling and overheating of the water system, and the adjustment accuracy of cold and hot water temperature can reach ±0.5°C. Practice has proved that the maintenance cost of screw compressors is much lower than that of centrifugal or reciprocating compressors.

2: Good backup and high reliability

The semi-hermetic twin-screw compressor has only two moving parts and is extremely reliable. When the unit is equipped with two screw compressors, the refrigeration circuits are independent of each other, each circuit can be used independently, and the backup is good.

3: Micro-computer controller technology

Advanced PLC microcomputer control is a common standard configuration. Through the input and output of analog and digital quantities, the micro-computer performs precise control and perfect protection on the operation of the unit. The human-machine interface is a Chinese LCD display with powerful display functions, and the operator can quickly and accurately read all important parameters and check the operating status of the unit. The unit has multiple automatic protection functions to ensure the safe and reliable operation of the unit. The microcomputer can completely record the fault record in the alarm record, which provides detailed and accurate information for maintenance personnel to troubleshoot.

4: Intelligent defrosting

The PLC microcomputer controller collects the unit's operating parameters, operating cycle and environmental conditions and other comprehensive weighted automatic defrosting. The defrosting parameters can be reasonably set according to the regional environmental conditions, making the defrosting operation of the unit more reliable and energy-saving.

5: Remote monitoring

The microcomputer controller reserves RS485 or RS232 communication interface. By adding hardware and installing communication software, the unit can be remotely monitored and controlled on the personal computer. The rotary screw chiller can also be connected with other building automation systems (BAS) through the communication interface. barge. The owner of the building and the maintenance personnel of the unit can regularly check the working condition of the unit through the telephone line.

6: Reliable quality

The compressors and expansion valves used in the unit are all well-known brand products, and the 50 ton air cooled screw chiller has undergone strict test runs before leaving the factory to ensure that all components are in the best condition.

7: Heat recovery technology

This series of products can achieve the heat recovery function by adding a recovery device according to the user's requirements. The temperature of the heat recovery hot water can reach up to 55°C.

8: Save investment

The air cooled screw compressor chiller does not need a cooling system, which can save investment in cooling towers, cooling water pumps and pipeline systems. At the same time, it does not need a dedicated machine room, saving construction space, saving civil engineering costs, and greatly reducing project investment.

hotels, office buildings, office buildings, commercial buildings, shopping malls, theatres and other occasions where water resources are tight; it is also suitable for industrial cooling fields.

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