Rack-Mount Heat Exchanger With Isolated Airflow for Clean Cooling
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Solution Overview
Problem
Existing cooling systems for electronic devices face issues with temperature fluctuations, contamination, corrosion, and energy inefficiency due to the use of ambient air, which can introduce contaminants and humidity, leading to reduced lifespan and wear.
Innovation Solution
A rack-mountable heat exchanger system that isolates recirculating airflow from ambient airflow using separate pathways, utilizing a heat exchanger with interleaved channels to transfer heat without mixing the air streams, and controlled fan assemblies to manage airflow based on temperature and humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ambient air is used as a heat sinking medium, then heat transfer efficiency is improved, but contamination and corrosion of electronic components occur
Solution Approach 1:
The system divides the airflow into separate ambient air pathway and recirculating air pathway, allowing heat transfer while preventing contamination. The heat exchanger segments the air streams physically, enabling thermal interaction without mixing the air masses.
Solution Approach 2:
The heat exchanger acts as an intermediary device that facilitates heat transfer from recirculating air to ambient air without allowing direct contact between the two air streams. This mediator enables thermal energy transfer while maintaining air stream separation.
2Object-affected harmful factors
If recirculating air is used for cooling, then contamination is reduced, but heat transfer efficiency decreases
Solution Approach 1:
The system merges the benefits of recirculating air (contamination reduction) with the benefits of ambient air (heat transfer efficiency) by using a heat exchanger to combine their thermal properties while maintaining physical separation of the air streams.
Solution Approach 2:
The heat exchanger serves as an intermediary that allows recirculating air to transfer its thermal energy to ambient air, enabling efficient heat dissipation while the recirculating air remains isolated from contaminants.
3Temperature
If excessive cooling is applied, then temperature stability is improved, but energy consumption increases and wear on cooling system occurs
Solution Approach 1:
The system uses temperature sensors and controllers to monitor and adjust cooling intensity, applying feedback control to maintain temperature stability while minimizing energy consumption and wear on cooling components.
Solution Approach 2:
The cooling system dynamically adjusts its operation based on actual thermal conditions, varying the intensity of cooling to match the heat generation of electronic components, thereby avoiding excessive cooling and reducing energy waste.
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 system effectively prevents contamination and corrosion while maintaining efficient heat transfer, prolonging the operational lifespan of electronic devices and reducing maintenance needs.
Implementation Method 1
a heat exchanger with interleaved channels to transfer heat without mixing the air streams
Implementation Method 2
controlled fan assemblies to manage airflow based on temperature and humidity
Data Source
AI summary
A rack-mountable heat-exchanger for modular electronic systems is provided that include a heat exchanger including ambient air inlets and outlets forming an ambient airflow path in a first direction, and recirculating air inlets and outlets forming a recirculating airflow path in a second direction perpendicular to the first direction separated from the ambient airflow path; housing for an electronic device, the housing including internal air inlets and outlets forming an internal airflow path; a first duct configured to link the recirculating air outlet to the internal air inlet; a second duct configured to link the recirculating air inlet to the internal air outlet; and fan assemblies located one of the airflow path, configured to propel air through the heat exchanger in the respective airflow path.