-- About Withair® --
Withair® is a global provider of technical products and services for sustainability and resource management, specialize in heating & cooling system, air quality system and clean energy technology development and utilization,now it has three factories,manufacturing different kinds of products,and committed to providing the first-class products & system solutions for clients.
At Withair®, our aim is to support the growth, profit, and sustainability goals of our clients by delivering innovative solutions with n x value.we gain a deep understanding of our client's needs and business objectives first and foremost by gaining and leveraging our technical knowledge, innovative thinking, and vast equipment resources. from heating & cooling solutions and air quality management,to energy performance and efficiency determination,Withair® delivers the results.
Withair® products & solutions combine utmost efficiency with minimum energy consumption and strict respect of the environment, the idea proved to be a winning one in just a few years, Withair® became the leader in the sector !
Withair® has highly effective professional team to service customers
Known for their professionalism and personal integrity, Withair's highly skilled engineers, technicians, electricians, stable manufacturing workers, strict quality controller, and quick-reaction & professional after-service staff utilize their multi-disciplinary expertise in the creation and production of every solution.
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Close cooperation among Withair's design, production and service teams - who are located under one roof and linked by advanced computerized systems - enables the Company to supply the widest possible range of products - from single units to very large quantities - while assuring rapid delivery and competitive pricing.
CHILLERS - MINIMIZE YOUR OPERATING COSTS
Withair® chillers were developed based on decades of knowledge and rich experience, includes air-cooled chillers and water-cooled chillers, ranging in capacities from 2 to 1,000+ tons. Withair® chillers are relied upon for both comfort and special process cooling applications in every corner of the world.
Withair® chiller plays a critical role in creating the right environment to ensure the health, comfort and industrial production. Withair® chillers not only serve HVACR systems and industry-type process cooling at factories that deliver the right temperature for the space, but they also help minimize operating costs with superior energy efficiency levels, low sound levels and with minimal environmental impact.Â
Withair® air-cooled chillers can reduce your total cost of ownership because they are engineering for lower life cycle costs, efficiency and reliability through design simplicity.  our optimized compressor parts profiles are designed specifically for chilled water applications to optimize full- and part-load efficiency. Withair® self-adapting control Microprocessor provides greater reliability and energy management through a proactive control strategy, safety functions with simple diagnostics and friendly interface.Â
-- Product Description --
Withair® is proud to offer an extensive line of water-cooled screw chillers ranging from 33 to 1,000+ tons. The water-cooled screw chillers feature a variety of models and options engineered to fit a wide range of applications. Withair® water-cooled screw chillers are ideal for customers who are focused on high energy efficiency, superior reliability and long equipment life. Withair® products within the unique portfolio are designed to help lower environmental impact with next-generation, low global warming potential refrigerants and high-efficiency operation.
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Withair® water cooled screw chiller is the mature products which are equipped with newly-developed semi-hermetic screw compressors and use dry type or flooded type evaporator, which result in lower noise and lower vibration, reliable long period operation, and installation feasibility on any floor of the building.The units are composed of a compressor(s), a condenser(s),a direct-expansion water cooler, a electronic expansion valve(s),and auxiliary and control equipment.Optimized system design and enhanced heat exchange efficiency makes the unit working best under both full load and partial load. Every chiller is fully factory tested and gas charged in the factory before dispatch. It' s good choice for hotel, shopping mall, hospital, factory, cinema and other civil architecture air conditioning system. Besides, it is widely used in plastic industry, electroplating industry, food processing,chemical industry and other process cooling applications of modern manufacturing industries which needs a lot of chilled water.Stepless capacities can be customized.The units can be operated with the utmost simplicity.
-- The Key Advantages Include --
*Â ECO friendly refrigerant R134A,R407C.
*Â Using for advanced semi-enclosed screw type compressor
The international advanced double-screw semi-enclosed compressor, through slide valve achieve mmultiple-stage or sectionless of adjustment,to adapt to changes in load of smooth and compressor built-in efficient oil separator, the rate can reach 99.7%,using differential injection,no pump, oil, safe and reliable guarantee mechanism for the safe and stable operation, long service life.
Energy-saving
* Â Unit adopts PLC control technology, according to user load demand changes through intelligent control, multilevel energy regulation in full or part of the unit that can reach the best energy efficiency, reduce the operating cost.
* Provide multilevel (0-25% to 50% &75% - 100%) and the energy level adjustment methods for your choice.
Intellectualized control, simple operation
* Unit adopts PLC control technology, "a key start" and automatic operation.
* In the man-machine interface screen English display, touch screen/LCD text interface for your option.
* Units with remote control functions: turbine control system with built-in WEB browser,users can pass on any computer through internet in the remote monitoring and control unit can operation conditions and parameters of the work unit, the query of the unit.
Protection function origin
* Units provided the refrigeration system, electrical system and the water system of the complete protection function, ensure its safe operation.
* Unit Settings: unit of power of inverse phase), (high/low refrigeration system protection, oil is too low to high temperature, vent protection system to protect and water flow protection, antifreeze protection safety protection function, guarantee the safe and stable operation of the mechanism.
Heat recovery function
* Units can be based on user needs, increase the heat recovery function, at the same time in refrigeration heat side will recycle waste heat utilization,and use side and heat side, improved the two-way unit running condition, improve the efficiency of the unit, the unit greatly reduce the operation cost.
* Partial heat recovery and total heat recovery.
Advanced design, superior performance of high-efficiency heat exchanger
* Shell and tube evaporator within the evaporator using the latest threaded efficient heat exchange tube and tube with high heat efficiency,combined with poor casing baffle slabs of chilled water flow and circuitous increased turbulence effect, make the evaporator heat transfer coefficient has been greatly improved,and the latest flame retardant, use shell heat preservation material, energy loss and ensure the good performance of refrigeration unit.
-- Technical Data --
| Model W02C2 |  | 100S1 | 150S1 | 200S1 | 250S1 | 320S1 | 380S1 | 420S1 | 450S1 | 510S1 | 560S1 | 700S1 | |
| Cooling condition | nominal cooling capacity | kW | 116.3 | 174.5 | 232.4 | 290.5 | 371.9 | 443.1 | 488.1 | 523 | 592.6 | 649.6 | 813.4 |
| nominal cooling capacity | TR | 34 | 50 | 67 | 83 | 107 | 127 | 140 | 150 | 170 | 187 | 233 | |
| input power | kW | 22.3 | 33.1 | 44.3 | 54.8 | 65.7 | 76.5 | 87.2 | 99.8 | 110.7 | 140.2 | 152.6 | |
| chilled water flow | m3/h | 20.1 | 30.1 | 40.2 | 50.1 | 60.1 | 70.2 | 80.1 | 90.1 | 100.1 | 128.1 | 140.2 | |
| chilled water pressure | kPa | 50 | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 68 | 71 | 72 | |
| cooling water flow | m3/h | 10.9 | 16.3 | 21.7 | 27 | 32.4 | 37.8 | 43.2 | 48.8 | 54.1 | 69 | 75.6 | |
| cooling water pressure | kPa | 22 | 24 | 25 | 27 | 28 | 30 | 32 | 34 | 35 | 38 | 40 | |
| Starting mode | Â | Y-â–³ | |||||||||||
| Energy control % | Â | 0-25-50-75-100 or Continous capacity control | |||||||||||
| Condensor | type | Â | shell and tube | ||||||||||
| pipe diameter | DN | 65 | 65 | 80 | 80 | 100 | 100 | 125 | 125 | 125 | 150 | 150 | |
| Evaporator | type | DN | dry type evaporator | ||||||||||
| pipe diameter | Â | 65 | 65 | 80 | 80 | 100 | 100 | 125 | 125 | 125 | 150 | 150 | |
| Compressor | Â | Screw type | |||||||||||
| Throttle mode | Â | thermal expansion valve | |||||||||||
| Product size | length | mm | 2500 | 2850 | 2850 | 2880 | 3150 | 3150 | 3200 | 3250 | 3350 | 3350 | 3550 |
| width | mm | 710 | 710 | 710 | 870 | 870 | 950 | 950 | 950 | 1120 | 1120 | 1120 | |
| height | mm | 1520 | 1520 | 1520 | 1820 | 1820 | 1820 | 1940 | 1940 | 2100 | 2300 | 2300 | |
| Unit weight | kg | 1150 | 1370 | 1620 | 1880 | 1880 | 2460 | 2710 | 2850 | 3040 | 3250 | 3540 | |
| Working weight | kg | 1250 | 1480 | 1790 | 2010 | 2270 | 2650 | 2930 | 3070 | 3290 | 3550 | 3930 | |
Twin compressors system
| Model W02C2 |  | 200S2 | 300S2 | 400S2 | 500S2 | 640S2 | 760S2 | 840S2 | 900S2 | 1020S2 | 1120S2 | 1400S2 | |
| Cooling condition | nominal cooling capacity | kW | 232.6 | 349 | 464.8 | 581 | 743.8 | 886.2 | 976.2 | 1046 | 1185.2 | 1307.6 | 1626.8 |
| nominal cooling capacity | TR | 67 | 100 | 133 | 166 | 213 | 254 | 279 | 300 | 340 | 374 | 465 | |
| input power | kW | 44.6 | 66.2 | 88.6 | 109.6 | 131.4 | 153 |
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