Magnetic Levitation Centrifugal Chiller
The magnetic levitation centrifugal chiller is a large-scale refrigeration unit centered around magnetic levitation bearings and variable-frequency centrifugal compressors; it is oil-free, friction-free, highly efficient, and energy-saving, representing the current mainstream high-efficiency solution for commercial and industrial cooling sources.
- The bearing consists of permanent magnets, electromagnets, displacement sensors, and a controller.
- Upon power-up, the sensors continuously monitor the rotor's position in real time; the controller dynamically adjusts the current flowing through the electromagnets to generate precise electromagnetic forces, thereby suspending the rotor at its central position (maintaining a clearance of approximately 0.05–0.1 mm).
- In the event of a power failure, the permanent magnets-supplemented by backup capacitors-sustain the magnetic force, enabling a safe "soft landing" for the rotor without any impact-induced damage.
The Four Key Processes of maglev Chiller Operation
Evaporation (Heat Absorption/Cooling)
ow-temperature, low-pressure liquid refrigerant absorbs heat from the chilled water within the evaporator, vaporizing into a low-temperature, low-pressure gas; the chilled water is thereby cooled to 7–12°C before being discharged.
Compression (Pressure and Temperature Rise)
The refrigerant gas is drawn into a magnetic-bearing centrifugal compressor and compressed by a high-speed impeller, transforming into a high-temperature, high-pressure gas (with rotational speeds reaching tens of thousands of revolutions per minute).
Condensation (Heat Rejection)
The high-temperature, high-pressure gas enters the condenser, where it releases heat to the cooling water and condenses back into a high-pressure liquid.
Throttling (Pressure and Temperature Drop)
The high-pressure liquid passes through an electronic expansion valve, undergoing a throttling process that transforms it into a low-temperature, low-pressure liquid, which then returns to the evaporator to complete the cycle.
Competitive advantage
High Efficiency and Energy Saving
IPLV reaches 10–11.5, reducing operating costs by 40%–60%.
01
Oil-Free and Maintenance-Free
Eliminates the need for oil pumps, oil filters, and oil return systems, extending service life by over 50%.
02
Low Noise and Vibration
Features friction-free mechanical operation with noise levels 5–10 dB(A) lower than standard units, making it ideal for environments such as hospitals and theaters.
03
High Efficiency Across a Wide Load Range
Offers precise capacity modulation from 10% to 100%, with annual comprehensive energy efficiency far exceeding Grade 1 standards.
04
Grid-Friendly Startup
Utilizes soft-start technology to ensure low starting current and prevent electrical grid disturbances.
05
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