Beijing ground source heat pump air conditioning units

Water-cooled screw chiller Image Product Features 1) High quality system components internationally renowned brands semi-hermetic twin screw compressors using well-known brand of fluoride-resistant motors, high efficiency and reliability, the motor is cooled by suction, good heat dissipation and no leaks may . Male and female rotors processed by high-precision milling machine rotor made with high volumetric efficiency, low noise, vibration small, smooth and reliable running characteristics. Rotor is directly driven by the motor, few moving parts and wear parts, high mechanical efficiency. Compressor oil separator built-in high separation efficiency of up to 99.7%, the use of differential pressure within the compressor oil, no oil pump, fuel supply safe and reliable. Compressor multi-segment or no segment regulated by the slide valve to smooth adapt to changes in air-conditioning load. Advanced design, superior performance efficiency heat exchanger unit uses a dry shell and tube evaporator, the evaporator using the latest threaded efficient heat exchange with the higher heat of vaporization efficiency fork tubes, combined with the housing baffle frozen detour in order to increase the flow of water produced by the spoiler effect, the heat transfer coefficient of the evaporator is greatly improved, while the outer surface of the evaporator barrel with the latest fire-retardant insulation material insulation and waterproof, the minimal cooling loss, ensure good unit cooling performance. And dry evaporator safe and smooth return of oil, without any external compressor oil return device to ensure safe supply. The unit uses a pressure vessel by the state supervisory inspection departments authorized horizontal shell and tube condenser, the condenser using a special external thread tooth structure and efficient heat transfer tubes, heat stability, high efficiency, and water side heat transfer tubes can be cleaned . Condenser unit according to national standards GB151 used to manufacture and test, and are equipped with a safety valve on each of the condenser, the unit has a very high security. Reliable refrigeration circuit unit single compressor machine single-loop system, the two systems are independent dual system unit, flexible, extra strong. Pipeline system with a variety of high quality refrigeration parts, including liquid line manual shut-off valve, filter drier with a filling port (with strong water absorption capacity replaceable filter), solenoid valves, have shown liquid humidity indication mirror and expansion valve. 2) advanced control system to improve the control system of the Department of the HLS series water-cooled screw chiller using the international famous brands of controller, which is air-conditioning industry's most reliable industrial control products, anti-interference ability to adapt to the harsh working environment to ensure long-term stable operation of the unit. And a complete communications functions, can be easily interface with building control systems. In the draw the world's advanced control technology at the same time, with the Department of the unique technology, the unit under various operating conditions can be the most energy-efficient way to safe and reliable operation. The unit is equipped with a variety of advanced sensor measuring element, control and protection elements, to provide better protection for reliable operation of the unit. Intelligent control features advanced microcomputer controller provides a powerful control functions, leading intelligent control unit program can be efficient and precise control to ensure stable operation of the unit, and to maximize the energy efficiency of the unit is running. Intelligent energy regulation control for precise control of water temperature. Advanced ahead of control, take appropriate measures to avoid suppression unit suddenly shut down due to an alarm before a failure occurs in a timely manner. Multi-alone multi-loop control of the compressor, automatic equalization operation, mutual backup, to extend the service life of the machine, and to reduce the impact caused by the possible failure to a minimum. The unit can be programmed on a weekly cycle operating schedule, to achieve automatic control unit start-stop, truly unattended, automatic operation. Friendly interface man-machine interface unit uses advanced LCD touch screen, with a friendly graphical display full Chinese operation interface, real income of the push, the user simply follow the prompts touch screen to control the unit in all directions run, abandoning the cumbersome and hard to remember key operations thick manuals, operation more convenient, more intuitive displays. Clearly the real-time display status information (such as temperature, pressure, total running time data), the user can easily start and stop the unit, parameter setting, fault finding and other operations on a large LCD display. With multi-level password protection, modify and set important parameters required to enter a password to operate the appropriate level, which can effectively prevent unauthorized persons illegal operation and ensure the safe operation of the unit. Original handwritten message board function, can be directly handwritten message on the touch screen, easy maintenance room. Reliable system protection unit has complete security protection devices, to provide comprehensive protection for the unit: Power supply phase, reverse phase, over voltage, under voltage protection compressor anti-reverse protection compressor motor overheating protection compressor overload compression machine to prevent frequent start protection compressor discharge temperature protection unit high voltage and low voltage low protection unit protection unit high pressure low protection level of chilled water outlet temperature is too low to protect chilled water, cooling water protects the sensor fault interrupter protection flexible The group communication function by adding the appropriate communication module, the unit can easily support a variety of open communication protocol, you can choose to configure compatible Profibus, Modbus, PPI different protocols RS485 / RS422 standard interface based on user, you can easily access the building control system, remote monitoring unit. Users can choose to configure HIKOM group control cabinet, easy operation function group control of multiple units. And you can control building systems based on the requirements of the chiller control other accessory equipment, such as: water pumps, cooling towers, electric valve, reducing the hardware investment building automation system, but also make the system more secure, reliable, and energy-saving. 3) Easy installation and commissioning of the evaporator and condenser are equipped with nozzles and clamp for easy field installation. Compact unit structure, small footprint. Condenser according to customer requirements to take over the direction of the left and right to change. Unit vibration, generally do not need isolation. When the machine factory, in the unit has a sufficient amount of refrigerant charge. All the low temperature portion unit has been completely insulated. Compressor starter unit configuration, user-friendly field wiring. On-site installation, simply connect the evaporator and condenser water and power supply wiring. Units are 100% dedicated test bench factory testing