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Turbocor Chillers Explained - Oil free magnetic bearing HVAC

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203K views|3 years ago
💫 Short Summary

The video explains the technology behind a turbo core chiller, including components like variable frequency drive, soft starter, dual impellers, electronic expansion valve, and magnetic bearings. It discusses the role of the compressor, evaporator, condenser, and expansion valve in the chiller system. The video emphasizes the use of valves for manual isolation and the unique impeller design for refrigerant manipulation. It also covers the importance of power electronics like silicon controlled rectifiers and capacitors. Overall, the video provides a comprehensive overview of turbo core chiller technology and its operation.

✨ Highlights
📊 Transcript
Overview of turbo core chiller technology components and operation.
00:00
The compressor plays a crucial role in pushing refrigerant through the system to remove heat.
Key components of the chiller system include the evaporator, condenser, and expansion valve.
Valves are used for manual isolation and the impeller design is unique for refrigerant manipulation.
Power electronics like silicon controlled rectifiers and capacitors are essential for the chiller's operation.
The role of snubber capacitors, modules, and mechanical parts in a compressor's operations.
04:11
Snubber capacitors are used to smooth out the DC waveform and ensure clean electricity reaches the inverter.
Various modules control the compressor's operations, such as the bearing motor compressor controller and the bearing pulse width modulation amplifier.
Mechanical parts inside the compressor, like the inlet guide vanes and impellers, play a crucial role in refrigerant flow and pressure increase.
The impellers rotate together and are connected to a shaft that runs the length of the compressor, influencing the efficiency and operation of the system.
Functionality of the motor stator in creating rotation through interaction with stator coils and permanent magnets in the rotor section.
07:08
Importance of bearings in holding the shaft in place and creating electromagnetic fields for shaft levitation.
Use of proximity sensors to monitor shaft position and pulse width modulation module to keep shaft aligned.
Cooling process through water cooling to remove heat generated by the compressor.
Distribution of air within a building by air handling units and fan coil units, with chilled water absorbing heat and refrigerant in the evaporator absorbing thermal energy from water.
The refrigerant is condensed into a liquid at the bottom of the condenser and sent to the cooling tower to release thermal energy.
12:05
The turbocore compressor can only compress gas and uses an expansion valve to control superheat levels.
Unwanted heat from the room is collected by chilled water and transferred to the evaporator.
Turbo core compressors are the most advanced and efficient, utilizing a two-stage compressor system.
The compressor increases pressure in stages with two smaller impellers, increasing efficiency.
Operation of a chiller system.
14:10
Refrigerant passes through impellers and a diffuser to slow down and increase pressure.
Inlet guide vanes regulate compressor capacity by adjusting angle and controlling refrigerant flow rate.
Two impellers on a shaft with bearings support and monitor shaft position.
Motor with permanent magnets and copper wire coils in the stator is controlled by the compressor module to adjust output frequency and voltage.
Chiller's permanent magnets act as an electrical generator during power failure.
17:14
Generated electricity charges capacitors to safely shut down chiller and prevent damage.
Viewers are encouraged to watch more videos on refrigeration engineering.
Conclusion includes a reminder to follow the channel on social media and visit engineeringmindset.com.