Product Description
Screw Type Air Cooled Water Chiller And Heat Pump are widely used in hotels, shopping malls, office buildings, exhibition halls, airports, stadiums and other public comfort central air conditioning systems, and can meet different requirements for the use of technological air conditioning systems for electronics, pharmaceuticals, biology, textiles, chemicals, metallurgy, pharmaceutical , Electric power, machinery and other industries.
Types and specifications:
Different refrigerant: R22, R407C, R134A.
The cooling capacity range of single unit: 140~814kW.
The unit can provide chilled water with a temperature of 5-15 ºC during the cooling operation. The standard operating conditions are: Outlet water temperature is 7ºC and inlet water temperature 12ºC.
Optional parts: According to the special requirements of users, auxiliary functional devices can be provided
Design, inspection and manufacturing standards.
Product quality level:
The design, production and sales of Screw Type Air Cooled Water Chiller And Heat pump operate strictly in accordance with the ISO9001 quality assurance system to ensure product quality.
Our company has invested heavily in the construction of the with international advanced level, which is used for the design of air-cooled water chillers, rooftop air conditioners, dehumidifiers, low temperature air conditioners, high temperature air conditioners , Development and test research and product factory testing. Strictly control the quality of manufactured products, so that users can buy them at ease and use them satisfactorily.
Screw Type Air Cooled Water Chiller And Heat pump have been determined by the National Air Conditioning Quality Inspection Center, and all technical performance indicators are higher than the standard of JB / T4329-1997 "Volumetric Cooling Water (Heat Pump) Unit". It is reliable and has been well received by users at home and abroad. Its market share has been increasing year after year, and it has always been in a leading position in China.
Main technical features:
Selected brand-name accessories, the unit is efficient, energy-saving and durable:
The unit uses internationally renowned brand semi-hermetic screw compressor,the compression part is composed of two spiral rotors that mesh with each other. The male rotor drives the female rotor. The double torsion positive displacement constitutes a pure rotation action, which makes the vibration extremely small and the operating range wide. The process from inhalation, compression to exhaust has the characteristics of high efficiency and smooth airflow. The compressor is lubricated and hermetically sealed using a differential pressure oil supply method without a lubricant pump. The capacity control system can facilitate partial load operation, and the compressor can achieve 25% -100% stepwise adjustment. Stepless energy regulation can also be used to fully match the building load.
The electronic expansion valve control system can achieve a control accuracy of up to 2600 steps. According to the suction superheat and saturation pressure, it cooperates with the electronic control system to accurately control the refrigerant flow, so that the unit will always remain in the best operating state and maximize the unit's capacity.
Complete unit control functions, multiple safety protection measures to ensure safe operation of the unit:
<1> Control function:
lUnit start and stop control
lRemote and short-range control options
lUnit program setting
lReturn water temperature control setting
lAutomatic control of energy adjustment
lHigh water temperature and low water temperature limit alarm
lAnti-freeze protection setting
lCompressor start and stop program management
lManual compressor management
lUnit timing management
lWater pump management
lProgrammable temperature management
lFull function operation parameter display
lFault alarm and diagnosis function
<2> Safety protection function:
*Compressor phase sequence protection
*Compressor overload and overheat protection
*Condensation fan and motor are equipped with overheat protection
*The system is equipped with high and low pressure protection devices
*The system is equipped with necessary safety valves, air release valves, and sewage valves
*The heat pump unit is equipped with an energy regulating valve to ensure the low temperature operation of the unit is safe and reliable
*Electrical components have protection against electric shock
*Antifreeze protection
*The system is equipped with water cut protection
The unit control system is intelligent, with centralized monitoring and remote monitoring interfaces:
<1> The unit adopts microcomputer control touch control screen, Chinese / English display, and friendly interface.
<2> High degree of automation, complete functions, can realize the unit start-stop program management, timing control, water pump management, full-function fault alarm and fault self-diagnosis function. At the same time, it is equipped with RS485 / RS232 communication interface, which is convenient for users to realize centralized monitoring and remote monitoring of the unit.
<3> Three-level password protection is adopted to prevent the program and setting parameters from being changed at will.
When the unit fails, it will automatically stop running immediately, and the alarm will output a fault signal and display the cause of the fault and the location of the fault, so as to facilitate troubleshooting and timely maintenance of the unit.
The start and stop of the motor is controlled by the computer and interlocked with the compressor and the condensing fan; the compressor is controlled by the computer and the liquid supply valve and the compressor act synchronously.
The multi-loop design of the refrigeration system improves the reliability and anti-interference ability of the unit
If two or more compressors are used, each compressor is designed as a refrigeration circuit. Each compressor is a backup for each other, thereby improving the reliability and anti-interference ability of the unit.
Rely on advanced performance test equipment to ensure stable performance of the unit, safe and reliable operation:
Our company has an advanced "Special Air Conditioning Laboratory", each air conditioner is subjected to strict operation tests in the factory to ensure that the unit operates safely and reliably under harsh working conditions, and the products shipped from the factory are qualified products.
6.Structural characteristics of air cooled water chiller and heat pump:
(1) High-quality and high-efficiency compressors of famous brands to ensure high energy efficiency ratio:
The unit uses a semi-closed twin screw compressor. Compared with a piston compressor, the semi-closed screw compressor has the following advantages:
1.Fewer parts (about 1/3 of the piston compressor), simple structure, less wearing parts, high reliability and long life;
2. The suction and exhaust of the compressor are uniform and continuous, the exhaust temperature is low, the vibration is small, it is not sensitive to wet compression, and the resistance to liquid shock is strong;
3. Unit energy efficiency ratio ≥3.15W / W;
4. In terms of energy adjustment, screw compressors have more advantages, and implement 25--100% four-level energy adjustment.
(2) High-efficiency fin-type air-cooled condenser:
1. The air-cooled condenser uses a unique fin shape and structure, and the reinforced flat-blade aluminum fins are made by stamping from imported special processing equipment. While the heat transfer effect is significantly improved, the surface is not easy to accumulate dust and is easy to clean , To prevent the growth of germs on the fins, to ensure good heat exchange capacity of the heat exchanger.
2. The surface of the aluminum fin of the heat exchanger has been specially treated to improve the corrosion resistance of the fin and greatly improve the durability of the heat exchanger.
3. The air-cooled condenser adopts a copper tube sleeve aluminum fin structure, and its aluminum fin and heat exchange tube are made of imported materials, which are resistant to dirt and corrosion. The copper tubes and corrugated aluminum fins are formed by mechanical expansion, which makes them tightly combined, high heat exchange efficiency, and large heat transfer coefficient; the heat exchanger tube plate support plate is made of high-quality stainless steel plate. Degree is high.
4. The advanced cleaning technology is used in the condenser processing process, which improves the surface cleanliness of the heat exchanger, thereby ensuring the efficient heat exchange capacity of the heat exchanger.
5. Using a unique heat exchanger cooling process, reasonably matching the air volume and oncoming wind speed, ensuring the balance between the cooling process and the wind side cooling capacity, giving full play to the compressor's cooling capacity and heat exchanger's heat exchange capacity, making the unit highly efficient Energy saving.
6. The condenser adopts a unique "inverted M" type layout, compact structure, small footprint, uniform over-wind, overcome the short circuit phenomenon of the condenser airflow, and give full play to the heat exchange capacity of the condenser.
(3)Dry shell and tube evaporator matched with high-performance heat exchange tubes:
1. Using the most advanced DAE high-efficiency evaporation heat transfer tube, the multi-spiral thin ribs and spiral protrusions on the inner surface of the tube greatly improve the heat transfer coefficient and heat transfer capacity.
2. The internal structure of the evaporator adopts fluid optimization design and is equipped with a high-efficiency liquid homogenizer, which solves the problem of the uniformity of the distribution of the refrigerant in the system. The heat exchange efficiency is 5% higher than that of the conventional enhanced heat exchanger;
3. Improved the sealing structure of the refrigerant water baffle, solved the baffle leakage and other problems, greatly improved the heat exchange efficiency of the evaporator, and at the same time reduced the resistance of the water process, thus ensuring that the unit reached a higher performance level;
4. Using unique heat exchanger cooling process design technology, rationally matching the system, ensuring the balance between the cooling process and the water side cooling capacity, and giving full play to the high efficiency of the heat exchanger; at the same time, the reasonable system matching makes the unit more energy-efficient.
High-efficiency and low-noise fans:
1. Condensation fan: Axial fan of famous brand is used. The fan has accurate operating parameters, high mechanical efficiency, low vibration, low noise, and long trouble-free operation time.
2. Durable fan motor: The shell of the condensing fan motor is made of cast aluminum alloy, which is corrosion-resistant and has a long service life; the whole machine has passed strict dynamic and static balance tests, with high efficiency, low vibration and low noise.
3. In order to ensure the normal operation of the heat pump unit in low temperature environment, the condensing fan adopts variable air volume control, that is, the computer adjusts the condensing fan speed accordingly according to the change of condensing pressure in low temperature environment to ensure the stable system operating parameters of the unit and good energy saving effect.
Anti-vibration design to ensure low noise and low vibration:
1. A spring or rubber damper is installed under the compressor, and the damping efficiency is above 85%, that is, the vibration transmission rate is less than 0.15, which reduces the unit vibration and system vibration, thereby reducing the unit noise.
2. All pipelines in the unit are fixed with vibration-proof plastic pipe clamps to avoid noise caused by vibration of the unit and the system.
Famous brand refrigeration system accessories:
1. All the refrigeration system accessories used in the unit are selected from famous brand, such as detachable drying filter, external balance thermal expansion valve, liquid supply solenoid valve, sight glass, high and low pressure controller, exhaust temperature controller, to ensure that the unit has a high performance level.
2. All materials of the unit can only enter the factory after passing 100% inspection to ensure the high reliability of the unit's refrigeration system.
Advanced and highly reliable intelligent control system and control technology:
1. In addition to the single-unit automatic configuration and function, the multi-unit control system also has multi-unit operation status display. According to the return water temperature, the computer automatically determines whether the air-conditioning system is operating in part or all units, and has RS485 / RS232 communication interface. It is convenient for users to realize centralized control.
2. The unit has the function of balancing the operation of multiple compressors to ensure the efficient operation of the unit.
Unit energy regulation method:
The unit performs logical calculation based on the return water temperature of the chilled water to control the unit's operating status and start and stop. Each unit adopts four-level energy regulation to achieve efficient and energy-saving operation of the unit.
Reasonable unit structure and good corrosion resistance
1. The unit adopts a frame structure form, which is compact and firm, with good mechanical strength, small volume, small footprint, uniform over-wind, and no air flow short circuit phenomenon.
2. The exterior of the unit is made of color sprayed steel plate, anti-corrosion and anti-rust, the surface is neat and smooth, and the shape is beautiful.
3. Adopt modular design, product adaptability is wide, parts interchangeability is strong, it can flexibly carry out combination of multiple models, and provide users with the most thoughtful service in the fastest way.
4. The layout inside the unit is reasonable. According to the ergonomics, the installation and maintenance space is optimized to facilitate daily cleaning, maintenance and inspection.
Convenient and quick installation, commissioning and maintenance:
1. The unit is shipped in the form of a complete machine. The low-pressure part is packed with insulation before leaving the factory. The system has been filled with fluorine and oil. After arriving at the site, only the water pipe connection is required. After the power is turned on, the unit can be turned on.
2. The computer will automatically start the pump motor, compressor and condensing fan according to the program, and coordinate the control of the unit's cooling, heating, delay, interlocking, protection and automatic temperature adjustment.
3. The unit is controlled by computer according to the set temperature, and automatically adjusts the energy of cooling and heating according to the change of the evaporator inlet temperature.
4. The installation of the unit is flexible, which can be controlled on site or remotely. The compressor, refrigeration accessories and electrical control system are all placed in the lower part of the unit in an open structure, without any panel, easy to check and maintain.
Certifications
FAQ
Q: What kind of products do you have?
We have products more than 30 series and over 1000 models, including air / water chiller (with heat pumps), AHU, various fan coils, VRV, Rooftop, fans, valves, air conditioner for industrial and plant use and other equipment or parts for the ventilation system.
Q: How about your technological support?
1. We own a team of engineers majoring in design and test the air conditioning products with more than ten years' experience.
2. The company cooperates with some domestic and foreign well-known manufacturers, universities and design institutes. What's more, it has developed some products with core competence.
3. We could do personal design for clients as their production demand and their condition.
Q: How is your price?
We have our own factory not the trading company. There is no middleman between clients and us. We give customers the most favorable price.
Q: What is your payment way?
We support T/T, 30% deposit after signing the contract and remaining 70% need to be received before shipment.
Q: How about your after-sale service?
Engineers go abroad for installation, teaching and maintenance.
Q: How long is the quality guarantee period?
Our quality guarantee period is 12 months.
We also have other related products. If you need and have any questions, please contact us at anytime.
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