Cooling Components

The NetCol5000-A mainly consists of a DC variable-frequency compressor, EC fan, evaporator, electronic expansion valve (EEV), oil separator, sight glass, filter dryer, air filter, electric heater (optional), wet film humidifier (optional), condensate pump, check valve, differential pressure switch, differential pressure sensor (optional), and temperature and humidity sensor (T/H sensor).

Figure 2-4 Components

(1) Fan	(2) Electric heater	(3) Condensate pump	(4) Drainage check valve
(5) Strong-current box	(6) Evaporator	(7) Wet film humidifier	(8) Water inlet solenoid valve
(9) Humidifier pump	(10) Differential pressure switch	(11) Signal cable terminal block	(12) Compressor driver
(13) Weak-current box	(14) T/H sensor	(15) Discharge pipe	(16) EEV
(17) Oil separator	(18) Sight glass	(19) Compressor	(20) Filter dryer

• Compressor

  • The NetCol5000-A uses a DC variable-frequency compressor that features compact size, light weight, long service life, low noise, easy installation as well as high reliability, stability, and energy efficiency.
  • The high-precision drive automatically adapts to the system pressure fluctuations.
  • The drive conducts precision self-check. Compressor and drive faults can be stored in separate zones.

• EC fan

  • The energy-efficient EC fan that supports stepless speed adjustment is used to reduce the energy efficiency of the fan.
  • There are ten EC fans in total. The smart cooling product will not shut down when a single fan fails.
  • Fans can be maintained with power-on. You can replace one faulty fan without shutting down the smart cooling product.

• Evaporator

  • The evaporator adopts the inner threaded copper pipe and blue hydrophilic aluminum foil to prevent water blowing due to condensate water accumulation and improve heat exchange performance. The V-type evaporator optimizes the airflow pattern and reduces the air resistance.
  • The finned-tube evaporator with a high cooling efficiency adopts the synergy field principle and computational fluid dynamics (CFD) to optimize the flow path design, which greatly improves the heat exchange efficiency.
  • The small diameter evaporator is adopted to enhance the heat exchange performance, a 10%+ increase in heat exchange efficiency compared with a traditional solution.
  • The designed pressure bearing capacity of the heat exchange coil is 1.6 MPa, an excellent pressure bearing capacity.

• EEV

  • The flow regulator uses a miniature controller to control the operation of the step motor, thereby changing the pass-through area of the valve to regulate the flow of refrigerant.
  • The EEV is equipped with an energy storage unit that prevents slugging due to migration of refrigerant when the smart cooling product is powered off abnormally.

• Oil separator

  It is an oil-gas separator which separates the lubricant brought out due to exhaustion of the compressor and brings back the separated lubricant to the compressor.

• Sight glass

  It allows you to observe the refrigerant flow and gas content for easy maintenance and optimization.

• Filter dryer

  It absorbs water from the refrigerant pipes and filters the foreign matter, which reduces component damage rates and improves operating efficiency and reliability.

• Air filter

  The G4 air filter is used, and the F5 air filter is customizable. The air filter meets the relevant requirements of the China National Standard GB/T 14295-2008.

• Electric heater

  • The positive temperature coefficient (PTC) electric heater automatically adjusts heating capacity and provides multiple protection measures to ensure secure and reliable operating.
  • The heater features quick start, large heating capacity, and even heating.

• Wet film humidifier

  • The wet film humidifier has low water quality requirements and high environment adaptability.
  • The wet film humidifier has a simple structure and is easy to remove, clean, and maintain.
  • The wet film humidifier can quickly start and generate huge humidification capacity.
  • The wet film humidifier consumes less power, saving more than 95% of energy compared with a traditional electrode humidifier.
  • Compared with a traditional electrode humidifier, the wet film humidifier has a longer service life and maintenance interval.

• Condensate pump

  The water pump provides power for top drainage with a maximum lift of 4 m.

• Check valve

  The check valve effectively prevents gas or liquid backflow.

• Differential pressure switch

  When the air filter is dirty or blocked, the differential pressure switch triggers an alarm, prompting for air filter replacement.

• Differential pressure sensor

  • It adjusts air volume based on the differential pressure to ensure precise air supply. No excessive adjustment helps save energy and reduce power consumption.
  • The air supply volume is also sufficient, which helps eliminate hotspots and improves reliability.

• T/H sensor

  Six built-in negative temperature coefficient (NTC) temperature sensors and one return air T/H sensor are provided.