The NLW integrated water-cooled screw industrial chiller unit of Nuo Leng mainly has the following characteristics:
1. System integration energy-saving, outdoor rainproof design without the need for a computer room: The integrated water-cooled screw type industrial chiller unit is combined with optimized refrigeration system components to achieve the integration of unit system components, water pumps, and cooling towers, realizing system integration and energy saving. The whole machine sheet metal rainproof design is directly placed outdoors, without the need for a dedicated computer room, saving the construction cost of the computer room.
2. Programmable PLC control, with just one click start, the entire refrigeration system achieves fully automated operation: remote and on-site one click stop and start, as well as related program operation, are achieved. After starting, the entire refrigeration system is fully automated according to the refrigeration load, and each system component is linked, communicated, controlled, and coordinated for operation.
3. Industrial grade high configuration and high standard design: Adopting high configuration and ideal system integration to cast high-quality products, the professional team adopts industrial grade standard design, with low noise and small vibration, designed according to industrial standards, suitable for 24/7 uninterrupted operation throughout the year.
4. Integrating multiple innovative technologies to ensure product energy efficiency, stability, and excellent performance:
1) Economizer energy-saving technology: saving more than 5% energy compared to units without an economizer;
2) PLC programmable control technology: realizing the communication control of the stop and start signal of supporting equipment such as water tower and water pump, avoiding unnecessary energy loss;
3) Vapor liquid separation technology: ensures sufficient evaporation and heat exchange of shell and tube heat exchangers and refrigerant liquid reflux evaporators;
4) Low temperature oil cooling technology: The refrigeration oil is cooled by low-temperature refrigerant, and then injected into the compressor to fully lubricate the moving parts inside the compressor and take away the heat generated by the motor, avoiding long-term high temperature inside the motor and ensuring high stability, long life operation, and flexibility of the moving parts.
5. Compact structure, superior performance, stable operation:
Using high-quality imported twin-screw bearings, its moving parts are only 1/10 of those of a piston compressor, and its vibration is only 1/5 of that of a piston compressor. High precision German FAG and Swedish SKF bearings are used in both radial and axial directions, combined with axial thrust balance drums to effectively balance axial loads. The failure rate is only 1/10 of that of piston compressors, and with world-renowned control components, the unit can operate safely and stably for a long time. The condenser and dry evaporator of the unit both use heat transfer tubes, and the main engine adopts an imported semi enclosed twin-screw compressor, which has many advantages such as compact structure, small volume, light weight, and small installation position. The semi enclosed twin-screw compressor has fewer moving parts and uses a 5:6 screw rotor. There is no direct wear between the rotors, making it highly reliable. Due to the fact that screw machines are continuous compressors without pulsation, integrated water-cooled chillers have the characteristics of stable performance, low noise, small vibration, and smooth operation.
6. A comprehensive energy control system:
The integrated water-cooled industrial chiller unit has a four stage and stepless capacity control system, with energy regulation of [100, 75, 50, 25 (or start, 0%]), and automatically adjusts the unit start and stop according to load changes, making it more energy-efficient. During operation, the computer control system will change the energy output of the unit based on changes in the client's thermal load. The microcomputer quickly determines the signal to push the slide valve to the required energy by monitoring the difference between the actual load measured and the user's setting. In multiple systems, it works in an optimized way that consumes less electricity when outputting ideal cooling capacity, not only exhibiting excellent performance at full load, but also having high operating efficiency even at partial load.
7. Independent operation of refrigeration system:
The large capacity integrated water-cooled screw industrial chiller unit has two or more independent refrigeration circuits, so even if one circuit fails/needs maintenance, the other circuit can still operate normally. Equipped with backup function, especially suitable for industrial non-stop environments; The imported PLC human-machine interface is a LCD touch screen with graphical display, easy to operate, and available in both Chinese and English. Equipped with RS485 national standard communication interface, it can be connected to DCS system and connected to the entire factory automation network for remote control and monitoring. The parameters are displayed in two ways: graphics and text tables, which are clear at a glance;, Select the operation according to the menu on the screen, and simply touch the display button on the screen with your finger.
8. Microcomputer programmable PLC controller with multiple protection functions:
It has protection functions such as compressor coil temperature high protection, oil preheating timed power on/off, cold water flow switch, cold water outlet temperature low protection, Y - △ start failure protection, exhaust temperature high protection, compressor overload protection, power-off memory function, frequent start stop protection, voltage abnormality protection, low oil level protection, high and low voltage protection, etc.
9. Multiple protection, safe, reliable and stable: providing complete protection from refrigeration system, electrical system to water system, fully ensuring the safe and normal operation of the unit. Equipped with safety protections such as compressor motor overheating, overcurrent, abnormal phase sequence, high exhaust temperature, high pressure, low pressure, low pressure difference, freezing point, and interruption, as well as pressure control devices for the refrigeration system, the unit can operate without fail; In addition to the internal protection module of the compressor providing functions such as overvoltage, undervoltage, phase loss, and overload protection, the pressure control device of the refrigeration system can ensure the safe operation of the unit.
10. Easy to install and run in a timely manner:
The industrial grade dedicated testing platform ensures that all components of the unit have been installed, debugged and tested under different operating conditions in the factory, ensuring that each equipment is qualified for delivery. Refrigerant and refrigeration oil have been added, and users only need to connect the water and circuit to put it into use, greatly reducing on-site installation and debugging time.
If you need more integrated water-cooled screw industrial chiller services, please contact the relevant service personnel of Nuo Leng.