Introduction
    Yu Jiang wind cold hot water recovering machine uses fully-closed turbine type air compressor and semi-closed screw-shaft air compressor. These imported products have famous brands. The highly effective condenser, evaporator, cooling and controlling components are of the famous brands. They are calculated and test accurately to produce the most superior and reasonable design. The machine is tested at the running test center and only launched when achieving the technical specification. Therefore, this machine has high efficiency, good quality, and low incident rate, providing the best products to customers.
   
Working principles
    Wind cold hot water recovering machine is a type of air conditioner which is different from wind cold water cold machine in the industry of air conditioner. In addition to the function of water cooling of wind cold water cold machine, this machine can also change to water heating state. The basic principle of wind cold hot water recovering machine is air compressed type chilling ring, which uses active refrigerant, absorbs heat from air or discharge heat through enforced heat exchange of ventilator to satisfy cooling or heating requirements. Wind cold hot water recovering machine is equipped with internally shifting cross valve, with function of heating or cooling conversion. Wind cold hot water recovering machine is suitably used in environment with temperature of not lower than -5℃, otherwise, it would be defrosted frequently due to freezing, resulting in low efficiency or abnormal operation of the machine.
    Wind cold hot water recovering machine can supply heat or conditioning for cooling the air. It also can supply hot water for living. This is a multi-purpose machine, which can replace two devices or a system of boilers and initial air conditioners, especially in places which demand for both heat and cold supply. It has obvious advantages in respect that it not only saves energy, but also uses a set of devices that can simultaneously meet the requirements for heat, cold, and water supply for daily use.
Scope of use: The machine is widely used in places such as motels, hotels, saunas, office buildings, shopping centers, factories, small residential areas, villas, schools.

Air compressor
    Air compressor: uses fully-closed turbine type air compressors of globally famous brand-names such as DAIKIN、COPELAND、SANYO、MANEUROP, Performer, or semi-closed screw-shaft air compressors such as HANBELL, Bitzer, Ref Comp. They are more effective than piston air compressors. They have such dominating features as stable operation, 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 type air compressor uses refrigerants such as R22、404c、R407c、R134a)

Winged condenser and tubular evaporator
    Condenser: uses various heat exchange copper tubes imported from German, Japan and produced domestically. The heat exchanger copper tubes of high efficiency are internally threaded and the wind guide wing is made of water permeable corrosion- resistant thin aluminum foils in parallel vein pairs, that expand the mechanical tube to tightly link the copper tubes and aluminum pieces together in order to maximize heat transfer efficiency, compact structure, small volume, light weight, high efficiency of heat exchange, easy cleaning and maintenance.
    Evaporator: heat exchanger copper tubes of high efficiency which are transparently threaded. The tube’s outer spiral surface is polished and water guide side wall uses non-short circuit structure, so as for cooling water to be mixed, enhancing heat exchange efficiency and saving energy.

Cooling units
    Cooling units: Uses 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, record of incident causes. The operation is simple and easy. Its automatic protection function can prevent the machine from damage during operation, extend the longevity of the machine and perform remote control and central control.

Protection devices 
    Overload protection devices of air compressor, over heat protection devices of coiler, protection devices of low-high pressure switch, phase (reverse-phase, phase shortage) protection devices, temperature automatic protection devices, safety valve or safety bolts.