I. Overview:
Modular air-cooled hot and cold water unit is to meet the needs of industrial and building air conditioning and the development of an air conditioning unit, which consists of multiple small hot and cold water unit unit combination in parallel, the century Changlong air-cooled unit Used in office buildings, restaurants, entertainment venues, hospitals, hotels and process air conditioning and equipment cooling, and can meet the electronics, pharmaceutical, biological, textile, chemical, metallurgical, pharmaceutical, power, machinery and other industries of different air-conditioning system Requirements.
Second, the characteristics and scope of application:
1, the initial investment, low operating costs, eliminating the need for cooling towers, cooling pumps and cooling water system, saving land resources, beautify the appearance of the building, and easy interior decoration.
2, fluorine system using double expansion valve, refrigeration, heating completely independent. To ensure that the unit in the winter low temperature conditions can be good and stable operation.
3, through the optimization of the design of the electronic control system, through the control of the inlet and outlet temperature automatically adjust the energy, with automatic diagnosis unit failure, automatic antifreeze, water, high and low voltage protection and other functions. Users use the remote controller to easily operate the unit.
4, the unit selection of imported fully enclosed scroll compressor and refrigeration accessories, to ensure the reliability of the unit.
5, the unit is suitable for 500m2 ~ 20000 m2 office buildings, large shopping malls, etc., for the winter ambient temperature of not less than -15 ℃ in most parts of China.
Third, the technical characteristics of air-cooled module
1. Selection of brand-name accessories, unit water-saving, do not take room.
Unit of the compressor, condensing fan, thermal expansion valve, evaporator, condenser, controller and other key components are selected at home and abroad well-known brand manufacturers of products to ensure reliable operation of the unit.
2. Complete unit control function, multiple safety protection measures to ensure the safe operation of the unit:
Air-cooled module unit controller is divided into two main modules and sub-modules, the hardware structure is exactly the same, in the software on the main module and sub-module to facilitate the user to use. The main module controller mainly controls the water pump, compressor, fan, four-way valve, keyboard management, LED display management, as well as the sub-module management, query the working status of the equipment, fault analysis, alarm. The sub-module controller accepts the control commands of the main module and completes the working process of the unit.
3. High degree of intelligence, high efficiency, energy conservation
According to the principle of fuzzy control, the computer detection and control system within the unit according to the size of the external load, timely start and stop units of the module, a comprehensive coordination and control of the entire air-cooled chiller operation, and record the operating parameters of the unit.
Can make the air-cooled chiller cooling capacity and external load simultaneously increase and decrease and the best match, so that the unit has been operating efficiently, thus saving energy. When the ambient temperature drops, the power consumption can be drastically reduced.
Intelligent fast defrost function to ensure that the unit in the winter normal work to ensure that heating effect.
4. High reliability, convenience, high life
The use of imported fully enclosed scroll compressor, a wide range of operating temperature and pressure range. System back to the liquid, back to the oil, anti-liquid strike ability, long service life.
When the module unit is running, if the external load is mutated or a certain refrigeration system fails, the controller can automatically make the refrigeration system run sequentially, enable the backup refrigeration system to improve the reliability of the whole unit.
The modules in the unit are small, compact, flexible assembly, efficient use of space, saving floor space and installation costs.
Modular air-cooled hot and cold water unit installation is simple, can reduce the installation cost of investment. In addition, with the microprocessor to play its intelligent expertise to ensure that the compressor uniform wear and tear, so that the rotation of the various units of the time roughly equal, thus extending the life of the unit.
When the unit is started up by the computer, the maximum inrush current is the starting current of a compressor plus the operating current of the running equipment. The impact on the grid is small, low on the transformer requirements.
5. High efficiency finned heat exchanger
The unit fin type heat exchanger adopts double corrugated internal thread pipe, unique V-shaped structure, on the one hand to improve the utilization of space, increase the heat transfer area, on the other hand to improve the fin heat exchanger airflow organization , Increased the windward area, increased heat transfer efficiency.
6. Strong adaptability
The unit structure consists of sheet metal spray, anti-corrosion ability, to adapt to a variety of climate and environment. At the same time the use of the most advanced design ideas, the use of special forms of increased heat exchanger, low pressure loss system design, and efficient compressor and reliable control program.
7. Match efficient, low noise fan:
Condensing fan with brand-name manufacturers of axial fans, protection class to IP55, long life and safe and reliable.