Direct Contact Vortex Heat Exchanger for Weight Reduction
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Solution Overview
Problem
Traditional heat exchangers with solid walls between fluids limit heat transfer, necessitating intermediate materials for heat transport, which increases weight and reduces efficiency.
Innovation Solution
A direct contact heat exchanger design where air and water mix in a cylindrical chamber, forming a high-speed vortex for direct heat and mass transfer without intermediate materials, using centrifugal force to separate water and air, allowing efficient heat exchange without fins or conductive structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid walls are used to separate fluids in heat exchangers, then structural integrity and fluid separation are maintained, but heat transfer efficiency is limited and weight increases
Solution Approach 1:
The patent removes the solid wall separator between hot and cold fluids, extracting the intermediate heat transfer barrier that limits thermal efficiency and adds weight. Direct contact between fluids enables unrestricted heat transfer without conductive materials.
Solution Approach 2:
The patent introduces a centrifugal vortex field as a dynamic mediator that enables heat transfer between fluids without physical contact. The rotating flow pattern creates an intermediate zone where thermal energy transfers directly between fluid streams while maintaining separation through motion rather than solid barriers.
2Reliability
If intermediate heat transfer materials are used, then heat transfer occurs between fluids, but weight penalty increases due to fins, walls, and tubing
Solution Approach 1:
The patent eliminates all intermediate heat transfer materials including fins, walls, and tubing. By using direct fluid-to-fluid heat transfer through a centrifugal vortex interface, the design removes the weight penalty associated with traditional heat exchanger structures while maintaining effective thermal coupling.
Solution Approach 2:
The patent replaces the mechanical heat transfer system (conductive walls and fins) with a fluid dynamic system. Heat transfer occurs through the kinetic energy of rotating fluid streams that create a vortex interface, substituting mechanical conduction with convective and radiative heat transfer mechanisms in the fluid boundary layer.
3Stability of the object's composition
If fluids are physically separated by solid walls, then fluid mixing is prevented, but heat transfer between fluids is limited
Solution Approach 1:
The patent uses dynamic fluid motion instead of static solid walls to separate and interact fluids. The centrifugal vortex creates a stable rotating flow pattern where fluids remain distinct through their position in the vortex (hot fluid on outer radius, cold fluid on inner radius) while enabling continuous heat transfer across the dynamic interface between them.
Solution Approach 2:
The patent employs hydraulic principles by using the kinetic energy and momentum of fluid streams themselves to create the separation and heat transfer interface. The centrifugal force generated by rotating fluid streams replaces solid mechanical separators, using fluid dynamics to maintain separation while facilitating thermal exchange.
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
This design enhances heat transfer efficiency while significantly reducing weight by eliminating intermediate heat transfer materials and structures, enabling lightweight construction with materials like carbon fiber or plastic.
Implementation Method 1
air is moved into and through a cylindrical mixing chamber, and the air enters the mixing chamber in a single circular direction and tangential to the cylindrical wall surface to form a high speed, forced air vortex
Implementation Method 2
the high speed vortex movement of the air stream is imparted to the heavier water droplets. This vortex motion results in centrifugal force that moves the water outward
Implementation Method 3
As the water droplets move through the mixing chamber, they exchange thermal energy and also can exchange mass in the form of condensation and/or evaporation with the moving air by direct contact
Implementation Method 4
exchange mass in the form of condensation and/or evaporation with the moving air by direct contact
Implementation Method 5
exchange mass in the form of condensation and/or evaporation with the moving air by direct contact
Data Source
AI summary
The invention is a heat exchanger that transfers heat directly between fluids which are in direct contact with each other rather than being separated by a heat conductive wall. Gas and liquid exchange heat when the gas is moved into and through a mixing chamber, and is directed to form a high speed, forced vortex gas flow. The liquid is sprayed into the mixing chamber to form droplets traveling with and mixing with the vortex gas flow. As the gas and liquid droplets move through the mixing chamber together in the vortex flow, they exchange thermal energy by direct contact. The mixing chamber length is designed so that the gas and the liquid droplets approach thermal equilibrium as the gas-liquid mixture moves into a separation chamber. Within the separation chamber, the centrifugal force of the continuing vortex movement of the gas stream separates the liquid from the gas stream and forms a layer of liquid on the separation chamber wall. The liquid then moves down along the wall to a liquid outlet, while a baffle plate restricts the interaction of the gas stream vortex with the liquid approaching the outlet.