Abstract: A method and system for predicting heat exchanger performance, an electronic device and a storage medium are provided. The method comprises: acquiring a flow unit of the heat exchanger and constructing a physical model of the flow unit according to structural parameters of the heat exchanger; constructing a coupled model of an interphase transfer mechanism for oil-gas-water three-phase flow using computational fluid dynamics according to the physical model; constructing a fully coupled population balance model for flow and heat transfer of oil-gas-water three-phase flow; solving the fully coupled population balance model to obtain a model calculation result and determining a Nusselt number and a Fanning friction factor; and determining a comprehensive heat transfer factor, wherein the comprehensive heat transfer factor is used to evaluate heat transfer performance of the heat exchanger.

Abstract: A liquid cooling radiator based on a working medium capable of liquid-liquid phase separation includes a cooling fan, a micro liquid pump, a mixing pipe and a heat exchanger which are connected in sequence via a plastic tube. The liquid cooling radiator uses a solution capable of liquid-liquid phase separation at a lower critical separation temperature as a working medium, and is sealed after filling the solution into pipelines of the liquid cooling radiator. By replacing a working medium of the active CPU liquid cooling radiator, a heat dissipation performance in a limited space under a condition of a same pump power consumption, is greatly improved, a viscosity of the working medium in a heat-carrying state is reduced to decrease a flow resistance, which realizes both an enhancement of heat transfer and a reduction of flow resistance.