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2025
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06
Working principle of high-density VC vapor chamber
Author:
The working principle of a high-density VC vapor chamber is based on the phase change principle, achieving rapid heat conduction through the evaporation and condensation cycle of the internal liquid. The specific process is as follows:
Evaporation process: When one end of the high-density VC vapor chamber contacts a high-temperature heat source, such as a computer CPU or mobile phone processor, the internal coolant absorbs heat, its temperature rises, and it begins to boil and turn into a gaseous state when it reaches its boiling point. This process is similar to water turning into steam when it boils.
Gas diffusion: The coolant, which has turned into a gaseous state, rapidly diffuses inside the vapor chamber due to molecular thermal motion, moving from the high-temperature area to the low-temperature area. Gas molecules have higher kinetic energy and will move in all directions, thus carrying heat to the entire surface of the vapor chamber.
Condensation process: When the gaseous coolant diffuses to the low-temperature area of the vapor chamber, because the temperature is lower than the boiling point of the coolant, the gaseous coolant will release heat and recondense into a liquid state. This process is similar to water vapor condensing into small water droplets when it encounters a colder surface.
Reflux process: The condensed liquid coolant, under the action of capillary action, flows back to the high-temperature area through the internal capillary structure, completing the entire cycle. Capillary action refers to the upward or lateral movement of a liquid in a narrow space due to the combined action of adhesion and cohesion.
Advantages and application scenarios of high-density VC vapor chambers:
Efficient heat dissipation: High-density VC vapor chambers can evenly distribute heat across the entire surface, avoiding local overheating, making them particularly suitable for high-performance electronic devices such as flagship smartphones and high-performance laptops.
Material innovation: In recent years, the "liquid cooling" solution combining copper and graphene has significantly improved the efficiency of VC vapor chambers. The ultra-high thermal conductivity of graphene makes heat conduction more efficient.
Challenges and solutions in practical applications:
Space constraints: In practical applications, the internal space of devices such as mobile phones is limited, and large-size VC vapor chambers may occupy the space of the battery and camera module. Therefore, manufacturers need to find a balance between heat dissipation efficiency, structural design, and body thickness.
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Working principle of high-density VC vapor chamber
The high-density vapor chamber (VC) operates on the principle of phase change, using the evaporation and condensation cycle of the internal liquid to achieve rapid heat conduction.
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