Water-cooled screw type low-temperature chilled water unit -45℃
This series of water-cooled screw-type low-temperature chillers is a high-performance, mature low-temperature refrigeration product that our company specializes in researching, manufacturing, and selling. It offers liquid outlet temperatures ranging from -45℃ to 0℃ and cooling capacities from 15,000 kcal/h to 9,500,000 kcal/h. This low-temperature chiller integrates many features from other products, utilizing either a custom semi-hermetic screw compressor or a two-stage compressor, complemented by high-efficiency heat exchanger technology, control technology, and system configuration. It features a compact appearance, rational layout, and easy operation and maintenance. Users can simply connect the water system piping and the required power supply to start operation. This series of water-cooled screw-type low-temperature chillers have a wide range of applications, professionally used in new materials, environmental gas recovery, chemical, biopharmaceutical, R&D, ultra-low-temperature cold sources, and other industries. The product boasts mature manufacturing technology and stable, reliable operation. Currently, it has won the favor and recommendation of a large number of customers.
This series of water-cooled screw chillers uses cooling water as the heat dissipation source and a special mixture of refrigerant as the refrigerant. The product standards are in accordance with GB/T18430.1-2007 "Commercial and Industrial Vapor Compression Water Chiller (Heat Pump) Units and Similar Applications." The design pays special attention to improving part-load performance and the application of the energy automatic regulation device to save operating costs.
This series of water-cooled screw-type low-temperature chiller units features the following:
1. Superior Performance:
The main unit employs an internationally advanced semi-hermetic screw compressor, motor, and integrated compressor design, eliminating concerns about shaft seal leakage; dual compressors or more have start-up and shutdown cycle control programs, balancing load and extending component lifespan; dual compressors or more use multiple refrigeration circuits, allowing the remaining circuits to continue operating normally when one circuit is undergoing maintenance; the water-cooled screw chiller unit features a backup function; the low-temperature water-cooled screw chiller unit's compressor utilizes unloading and voltage reduction start-up to avoid grid impact.
2. Easy Installation:
Water-cooled screw type low-temperature chiller unitTightly structured, with a small footprint, saving space in the machine room; factory-set and fully operational upon delivery; water-cooled screw chiller with minimal vibration, no need for vibration isolation on the base, easy to install; simply connect the evaporator chilled water and condenser cooling water pipes during installation; low operating and maintenance costs; the water-cooled screw chiller can implement intelligent program control according to load requirements: 100%, 75%, 50%, 25% (or start), 0.
3. Energy conservation
The total number of compressor parts in the water-cooled screw chillers is only 1/10 of reciprocating types, featuring a simple structure, fewer wearing parts, and no intake or exhaust valves. It is insensitive to humidity and has an extremely low failure rate; the screw compressor can operate without failure for up to 40,000 hours. The Shanghai water-cooled screw chillers are equipped with comprehensive safety protection functions; pressure protection includes high-pressure and low-pressure electrical automatic protection devices; motor protection includes under-voltage, phase loss, reverse phase, overload, and motor overheating protection; oil shortage protection includes anti-freezing protection: the chiller will automatically shut down when the chilled water temperature is too low; safety valve protection: the safety exhaust valve will automatically open when the refrigerant pressure exceeds a certain value. These safety features ensure the stable and safe operation of the water-cooled screw chillers; characteristics of the screw compressor include the use of imported high-efficiency and fluorine-resistant motors from France, offering high efficiency and reliability; the latest third-generation 5-6 asymmetric tooth profile.Water-cooled screw-type low-temperature chiller unitFour-section continuous unloading capacity control system; equipped with German FAG and Swedish SKF high-precision bearings; Swab effect oil separator; low vibration, low noise.
4. Microcomputer Control
German "SIEMENS" PLC Programmable Touch Controller, Water-Cooled Screw Chiller Human-Machine Interface with Full Chinese Display: Italian "CAREL" Text Display; Water-Cooled Screw Chiller with Automatic Monitoring of Cold Water Outlet Temperature, PLC Control of Sliding Valve, Compressor Regulation, and Effective Load Tracking; Intuitive Display Shows Operating Water Temperature Points and Running Time Directly (PLC); Automatically Records and Saves Recent Fault Alarms and Occurrence Times for Water-Cooled Screw Chillers, with Fault Handling Tips Issued; Modify Existing Content as Needed (Password Required), Including In-Out Water Temperatures, Capacity Adjustment Position, Protection Points, Pressure, etc.; Operating Status Display (PLC), Animated Display of Operating Status, Including Compressor Operation, Refrigerant Flow, Water Flow, and Temperature; Facilitates Comprehensive Understanding of the Low-Temperature Chiller's Operating Status.
5. Refrigeration Components/Electrical Components.
The electrical control system and components such as relays, thermal protectors, expansion valves, pressure controllers, and drying filters in the water-cooled screw-type low-temperature chiller are all world-renowned brands, significantly enhancing the overall reliability of the chiller.
6. Industrial-grade platform professional testing:
The platform guarantees that all components have been fully installed, and the equipment has undergone operation, debugging, and testing under various conditions within the factory. Each unit is guaranteed to be 100% qualified upon shipment, pre-filled with refrigerant and lubricating oil. Users only need to connect the water and electrical systems to start using the equipment, significantly reducing on-site installation and debugging time.
7. This series of water-cooled screw typeWater-cooled screw-type low-temperature chiller unitEquipped with cloud control services and interconnectivity, supporting mobile APP control, offering great value for money, and providing 24/7 proactive after-sales service, ensuring customers have no worries about after-sales support when purchasing our products.
