1.Water-cooled air conditioning comfort temperature humidity system' conditions for measuring cooling capacity:
Inlet air dry bulb temperature 23°C, wet bulb temperature 17°C; cooling water inlet temperature 30°C, outlet water temperature 35°C.
2. Evaporation Coil: direct expansion evaporator, the copper tube is a high heat conduction seamless copper tube with a hydrophilic punched aluminum sheet, the aluminum sheet is tightly attached to the copper tube and the tube is mechanically expanded to make the copper tube and the aluminum sheet tightly fit.
3. Condenser: Water-cooled shell-and-tube condenser. The shell is made of copper plate with a thickness of 6mm or more. After anti-rust treatment, the pressure resistance is 400PSI. The two ends of the tube side are sealed with flanges. The end cover is made of cast iron. .
4. The constant temperature and humidity air conditioning adopts the forward-curved multi-blade centrifugal suction impeller.
The impeller must pass the dynamic balance test. The long-term operation still has low noise and small vibration, and can maintain high-efficiency air supply. It adopts self-calibrating ball bearings .
5. Reasonable refrigeration cycle, easy maintenance.
Considering the different needs of different users and the convenience of maintenance, we have designed a single cycle circuit, that is, one compressor and one refrigeration cycle. When a certain refrigerating cycle is repaired due to failure, the other refrigerating cycles can operate as usual.
6. Safe and reliable operation, excellent and stable performance.
To prevent abnormal situations, the unit is equipped with safety protection devices: high-voltage switch, over-six overload protection device, relays, etc., are all made of high-quality foreign products to ensure greater efficiency.
7. Micro-computer control technology, multi-functional automatic control.
Water-cooled hvac temperature and humidity control adopts the combination of microcomputer and high-level display screen to monitor the unit in all directions, automatic safety control, and use fuzzy control principle to precisely adjust energy, so as to truly realize the safe and economical operation of the unit.
Working Principle
Constant temperature and humidity air-conditioning system is composed of refrigeration system, heating system, control system, humidity system, air circulation system, and sensor system. The above systems are divided into two aspects: electrical and mechanical refrigeration. The working principle and working process of several main systems are described below.
The operation of the constant humidity and humidity machine system is through three interrelated systems: refrigerant circulation system, air circulation system, and electrical automatic control system;
Refrigerant Circulation System
The liquid refrigerant in the evaporator absorbs the heat of the air (the air is cooled and dehumidified) and starts to evaporate. Finally, a certain temperature difference is formed between the refrigerant and the air, and the liquid refrigerant is completely evaporated into a gaseous state, and then sucked by the compressor. And compressed (increased pressure and temperature), the gaseous refrigerant absorbs heat through the condenser (air-cooled/water-cooled), and condenses into a liquid. After throttling through the expansion valve (or capillary tube), it becomes a low-temperature and low-pressure refrigerant and enters the evaporator to complete the refrigerant cycle process.
Air Circulation System
The fan is responsible for inhaling air from the air return port. The air passes through the evaporator (cooling, dehumidification), humidifier, heater (heating), and then is sent to the space required by the user through the air supply port. The air sent out is mixed with the air in the space and returned to the room. to the return air outlet.
Including power part and automatic control part.
The power supply part supplies power to compressors, fans, humidifiers, etc. through contactors.
The automatic control part is further divided into temperature, humidity control and fault protection parts:
The temperature and humidity control is through the temperature and humidity controller, which compares the temperature and humidity of the return air with the temperature and humidity set by the user, and automatically operates the compressor (cooling, dehumidification), humidifier, electric heating (heating) and other components to achieve Automatic control of constant temperature and humidity.
Fault protection control is achieved through the combination of pressure protection, delayer, relay, overload protection, etc., to control the failure protection of compressors, fans, humidifiers and other components.
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