Two-phase cooling system with flow boiling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cooling technologies are inefficient in managing high thermal power densities and fail to maintain electronic components at optimal temperatures with minimal energy consumption and reduced noise, while also being bulky and noisy.
Innovation Solution
A two-phase flow cooling system with a closed hydraulic circuit that utilizes a heat sink-evaporator to transfer heat through convection, conduction, and evaporation, controlled by an electronic system regulating pump flow, fan speed, and pressure, featuring a finned surface geometry and materials for enhanced heat transfer and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional cooling technologies are used, then cooling capacity is provided, but energy consumption increases and noise is generated
Solution Approach 1:
The patent employs phase change heat transfer (evaporation and condensation) in a closed-loop two-phase system. The working fluid evaporates at the evaporator absorbing heat from electronic components, then condenses at the condenser releasing heat to the environment. This phase transition mechanism enables high cooling capacity with lower energy consumption compared to conventional single-phase cooling systems.
2Productivity
If high thermal power densities are managed, then cooling performance is improved, but system volume increases
Solution Approach 1:
The patent utilizes a two-phase fluid circulation system with pump, evaporator, condenser, and expansion device arranged in a closed hydraulic circuit. The fluid dynamics and phase change properties enable compact heat exchanger design that achieves high cooling performance without excessive system volume.
3Power
If cooling capacity is increased, then heat removal is improved, but noise level increases
Solution Approach 1:
The phase change mechanism absorbs large amounts of latent heat during evaporation, enabling high heat removal capacity without requiring high-velocity fluid flow or large compressors that generate noise. The silent operation is achieved through passive heat transfer dominated by phase transition rather than mechanical compression.
4Temperature
If electronic components are cooled effectively, then temperature control is improved, but complexity of cooling system increases
Solution Approach 1:
The two-phase closed-loop system serves multiple functions: heat absorption at evaporator, heat rejection at condenser, fluid circulation via pump, and temperature regulation through expansion device. This multi-functional integration achieves effective temperature control while managing system complexity through unified design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively removes high heat densities with low mass flow rates, maintains isothermal conditions, reduces system volume and energy consumption, and minimizes noise, offering improved performance over existing technologies.
Implementation Method 1
a heat sink-evaporator capable of transferring heat by conduction from a component to be cooled to the refrigerating fluid
Implementation Method 2
transferring heat by conduction from a component to be cooled to the refrigerating fluid... capable of condensing the vapor which develops on the evaporator while simultaneously dissipating the heat given by the refrigerating fluid both by conduction, convection and radiation
Implementation Method 3
it passes partially from the liquid state to the vapor state... capable of transferring heat by conduction from a component to be cooled to the refrigerating fluid
Implementation Method 4
a condenser-radiator, capable of condensing the vapor which develops on the evaporator
Implementation Method 5
dissipating the heat given by the refrigerating fluid both by conduction, convection and radiation
Data Source
AI summary
A two-phase cooling system with flow boiling, characterized in that a closed hydraulic circuit apparatus of a heat transfer refrigerating fluid is provided, including: a pump for a refrigerating fluid which, at least in some stretches of the circuit, is two-phase liquid-vapor or multi-phase; a heat sink-evaporator configured to transfer heat by conduction from a component to be cooled to the refrigerating fluid; a condenser, capable of condensing the vapor which develops on the evaporator while simultaneously dissipating the heat given by the refrigerating fluid both by conduction, convection and radiation and by condensation into the environment; a tank which also acts as an expansion vessel, or a tank and an expansion vessel which are distinct and connected to each other; and a plurality of sensors, including flow rate, pressure and temperature sensors and an electronic control system of the pump.