Model: PFSV
Cooling capacity: 281.0~1904kW
Refrigerant: R134a
 
■  High efficiency and energy saving: McQuay self-developed VFD technology, matched with falling film evaporators, the whole series can meet China national first-class energy efficiency requirements, and IPLV can reach 10.6 under AHRI conditions, which greatly reduces operating costs.
 
■ Single-screw technology: The screw of the single-screw compressor and the star wheel are arranged symmetrically, so that the axial and radial forces of the screw cancel each other. Thanks to this balanced force technology, the life of the single-screw theoretical bearing far exceeds that of the twin-screw theoretical bearing life.
 
■ High level materials: The star wheel is made of composite carbon fiber material imported from the Netherlands. The star wheel has good lipophilicity, wear resistance, corrosion resistance and high temperature resistance; The rotor surface is coated with an aluminum protective layer, which has better lubricity and sealing performance; The metal and non-metal matching of aluminum rotor" and "non-metal star wheel" can avoid material wear caused by large friction between the same materials, so as to achieve gapless compression, and improve the pressure ratio to obtain high compression efficiency.
 
■  Low operating noise: When the eleven teeth of the star wheel mesh with the six teeth of the rotor, the exhaust pulsation is dispersed and reduced, and it has the characteristics of exhaust balance, which can effectively eliminate the sinusoidal sound, and the double reverse waves generated by the symmetrical star wheel and the single screw form an internal The muffler can effectively reduce the noise of the compressor. The unit has the advantages of balanced operation, low noise and small vibration.
 
■  New falling film evaporator: the main model adopts the new type of falling film evaporator, the refrigerant is sprayed evenly, combined with the special tooth shape design of the inner surface of the evaporation tube, so that the heat exchange between the refrigerant and the refrigerant is more sufficient, and the evaporator can be exchanged more fully. Under the premise of thermal efficiency, the refrigerant charge is greatly reduced.
 
■ Quick startup function: In response to the sudden failure of the power supply, the PFSV variable frequency single-screw chiller can realize the quick start function. By selecting the UPS emergency power supply, when the power supply is restored, the unit can be started quickly to meet the requirements of high air conditioning stability, realize uninterrupted cooling, and avoid unnecessary losses caused by the power failure of the unit.