Introduction
    Yu Jiang water-cool open low temperature machine uses fully-closed turbine air compressor. This imported product has famous brands. The new highly efficient condenser, evaporator and cooling and controlling components are of the most famous brands globally. Their temperatures can reach -35℃. This cooling machine has good features such as superior functions, stable performance, simple operation, compact structure, good appearance, regardless of using ethylene glycol or brine. The required temperature is 0℃ ~ -35℃. Our company can design and manufacture according to customer requirements. The averagely low temperature turbine cooling machine produced by our company is calculated and tested with the accuracy to create a superior and reasonable design. It is tested at the running test center and only launched when achieving the technical criteria. Therefore, this cooling machine has high efficiency, good quality, few problems, providing customers the best products.

Working principle
    Water-cool open low temperature cooling machine uses water for cooling. The high temperature, high pressure gaseous refrigerant escaping from the air compressor output goes through the tubular condenser and cooling tower for chilling to form a low temperature-high pressure liquid refrigerant, then expansion valve supplies low temperature low pressure liquid refrigerant to tubular evaporator for evaporation to achieve chilling efficiencies. The temperature of refrigeration part is reduced to below 0℃ by ethylene glycol or brine. After that, it is supplied to used equipment.
Scope of use: In the industrial manufacture sectors which need to use to reduce the temperature or in medium and low-temperature chilling sector.

Fully-closed turbine low-temperature air compressor
    Air compressor: using fully-closed turbine air compressors of globally famous brand-names such as DAIKIN、COPELAND、SANYO、MANEUROP , Performer. It has higher efficiency of 20%-30% than piston air compressors with such dominating features as stable performance, high efficiency, low incident rate, convenient maintenance. Based on customers’ request, one or more air compressors can be used, air compressor can change in accordance with sub-load, automatically interchange operation, balance working hours of air compressors, save power, extend cooling machine’s life span.
(Fully-closed turbine air compressor uses refrigerants such as R22、404c、R407c、R134a)

Tubular condenser and evaporator
    Condenser: using various heat exchange copper tubes imported from German, Japan and produced domestically. The copper tube’s outer surface is processed in low-level ladder shape, thereby increasing the heat exchange area, enhancing the heat transfer. The copper tube’s inner surface is glossy, thereby reducing water pressure and making it easy for cleaning and maintenance.
    With ethylene glycol, the evaporator uses internal thread high effective heat exchange copper tube, thereby increasing the heat exchange area, improving heat transfer efficiency, and saving energy.
    With brine, the evaporator is made by 316L stainless steel or copper alloy, which is resistant to alkali and corrosion, thereby increasing efficiency and longevity of the machine and help maintain machine stable performance.

Cooling Units
    Cooling Units: Using the well-known global brands such as DANFOSS, ALCO, SPORLAN with first-rate quality and superior functionality which helps promote machine efficiency.

Electric control-system
    Electric control-system uses smart PLC、PC touch screen control system in Chinese language with quick response and precise control. The system has functions of water temperature automatic control, load automatic increase and decrease, on-off timing and record of incident causes. The operation is simple and easy. Its automatic protection function can prevent the machine from damage during operation, extend the life span of the machine and perform remote control and central control.

Protection devices 
    Overload protection devices of air compressor, over heat protection devices of coiler, overload protection devices ventilator engine, protection devices of low-high pressure switch, phase protection devices (reverse-phase, phase shortage), protection devices of anti-freezing, safety valve  or safety bolt, are best protecter of the machine