a. The refrigeration system circuit and unit design have multiple heads to choose from,1~4A compressor head that does not interfere with each other.

b. Each refrigeration system compressor starts sequentially, with a single compressor operating at low loads（25%）The star delta voltage reduction startup reduces the starting current to minimize the impact on the power grid.

c. Application of Refrigeration Compressors

◇ brand5:6Asymmetric twin-screw compressor, which is a screw compressor with moving parts of a reciprocating compressor1/10Vibration for reciprocating compressors1/5No need to fix the foundation. Radial and axial co use11Only high-precision GermanyFAGAnd SwedenSKFBearing combination, combined with axial thrust balance drum, balances axial load, with a failure rate of reciprocating compressor1/10Ensure that the unit can operate stably for a long period of time, with high energy efficiency and long service life (operating life is100000Hours), low failure rate、Easy maintenance, etc.

◇ A single compressor can achieve graded and stepless energy regulation, which is flexible, convenient, and energy-efficient in operation.

◇ The double-layer three-dimensional oil separation filter has good oil filtration effect, ensuring the normal operation of the compressor and the cleanliness of the heat exchanger, so that the unit is always in heat exchange.

◇ Adopting a pump free built-in pressure differential lubrication system, energy-saving and reliable.

◇ Fluorine resistant and low loss motor design, equipped with reliable motor overheating protection device to ensure reliable operation of the motor.

◇ The design of the exhaust chamber and continuous gas supply to the rotor ensure low vibration and low noise of the compressor.

d.Reliable functional components

◇ Heat exchanger: The evaporator and condenser of the unit are both shell and tube heat exchangers, using imported plates, and the internal heat exchange copper tubes are made of internally threaded copper tubes. Has a high withstand voltage rating、High heat exchange efficiency, maintenance free, long service life, etc.

◇ System: The unit adopts Siemens system. usePLCTechnology, capable of accepting programming, and equipped with comprehensive communication functions, can easily integrate with building intelligent systems.

◇ Electrical system: The unit uses electrical components from brands such as Siemens and Schneider.

◇ Human machine interface: The unit adopts Siemens touch LCD display screen, with Chinese and English human-machine interface, simple operation program, one click start, and automatic operation.

◇ Other operating components such as expansion valves, solenoid valves, drying filters, electrical components, etc. are all imported brands with reliable quality and long service life.

e.Application of refrigerants

◇Multiple refrigerants can be used, such asR134a,R407C,R404AWaiting to meet social demands.

◇ Stability: Shanglei integrates globally renowned supplier resources to order each component of the unit, ensuring the high quality of each component and thus ensuring the stability of the overall quality of the machine.

◇ Energy saving: The unit adopts Siemens' complete control system, coupled with Shanglei's independently developed energy-saving control program, to ensure that the unit automatically adjusts the operation status of the compressor according to the set working conditions, greatly ensuring smooth and energy-saving operation of the unit. The unit can recover and utilize the waste heat from the condenser, greatly reducing the operating costs of the unit.

◇ Simplicity: The unit structure is simple and has a good human-machine interface. Within the operating range of the unit, the operating conditions of the unit can be freely set. Once set, the unit can operate on its own and adjust its energy in real time, making it easy to operate.

◇ Multi compressor unit, each compressor refrigeration system is independent and can serve as a backup for each other. Effectively reduce customers' initial investment.

◇For more detailed parameters and cooling and heating requirements, please consult Shang Lei: