XiaomiDevices – In addition to the 120Watt Xiaomi HyperCharge, Xiaomi has recently launched a cooling technology innovation called Loop LiquidCool in the world. This technology is inspired by cooling solutions used in the aircraft and aviation industries.
Broadly speaking, Loop LiquidCool uses a capillary effect which draws the liquid refrigerant to the heat source, vaporizes it, and efficiently disperses the heat towards the cooler area until it condenses and is captured by unidirectional flow in a closed conduit.
Loop LiquidCool technology has twice the cooling capability of conventional vapor chamber solutions. While this technology is claimed to be the most efficient mobile cooling solution for now. Later Xiaomi plans to bring this technology to mobile phones released in the second half of 2022.
More fully, Loop LiquidCool features an annular heat pipe system consisting of an evaporator, condenser, refill chamber, gas and liquid pipes. Placed in a heat source, the evaporator has a refrigerant that evaporates so that it becomes a gas when the phone is under high workload.
The gas and air stream is then diffused into the condenser, where the gas condenses into a liquid again. Then, this liquid is absorbed and collected through small fibers in the refill chamber which will refill the evaporator.
Although Loop LiquidCool uses the same method as Vapor Chamber Liquid Cooling, the new form factor of this technology makes a significant efficiency difference because conventional vapor chambers do not have separate passages for gas and liquid so hot gas and cold liquid mix and block each other, especially in under high workloads.
Loop LiquidCool has a special ring-shaped pump design that can reduce airway resistance by up to 30%. This allows for a more radiant steam flow and the maximum heat transfer capacity is increased by up to 100%. You could say the one-way circulation system is the key to heat dissipation.
In order to ensure that the one-way circulation has high efficiency, the implementation of the Tesla valve structure in the refill chamber is very important. The Tesla valve is a one-way valve that allows liquid to pass through the evaporator and prevents gases from moving in the wrong direction. This allows for higher efficiency in circulating gases or liquids throughout the system.
Xiaomi also experimented with customizing the Xiaomi MIX 4, where the original vapor chamber was replaced with the new LiquidCool Loop.
When testing Genshin Impact for 30 minutes with high graphics and a frame rate of 60pfs, this latest cooling technology is able to make the cellphone below the maximum temperature of 47.7oC and the processor has a temperature of 8.6oC which is lower than the standard version of the cellphone.
Loop LiquidCool technology is supported by one water circulation, liquefied gas separation, and low heat resistant gas pipes from the Tesla valve, making it able to keep the temperature of the cellphone stable when the application and cellphone are run.