Rack-Mount Electrolyzer Housing with Passive Convection Cooling
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Solution Overview
Problem
Rack-mounted high-pressure electrolyzers face challenges in cooling due to their compact size, leading to increased electrical resistivity and efficiency loss from heat development, necessitating energy-consuming and noisy motorized cooling solutions.
Innovation Solution
A rack-mount box with a housing design featuring a cool air inlet below and a hot air outlet above the heat-emitting device, utilizing a roof structure to direct heated air out, combined with a heat-conducting cooling tray and ambient air inlet openings for efficient natural convection cooling, eliminating the need for motorized fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electrolyser is rack-mounted with compact dimensions to fit standard 19-inch rack, then the device size is reduced and space efficiency is improved, but the cooling effectiveness deteriorates due to limited air circulation space
Solution Approach 1:
The patent introduces a vertical dimension for air flow (cool air inlet at bottom, hot air outlet at top) to compensate for limited horizontal cooling space in the compact rack-mounted design. The roof structure with inclined surface creates a three-dimensional air circulation pattern that maximizes cooling efficiency within the constrained volume.
Solution Approach 2:
The housing is segmented into functional zones: cool air inlet openings in the bottom wall, heat-emitting device chamber in the middle, and hot air outlet in the roof structure. This segmentation allows optimized air flow paths and thermal management within the compact form factor.
2Temperature
If motorized fans are used to cool the electrolyser, then the cooling effectiveness is improved, but the energy consumption and noise increase
Solution Approach 1:
The cooling system is designed to be self-service through natural convection. The roof structure with inclined surface and elevated hot air outlet automatically directs heated air outward, creating a passive cooling system that eliminates the need for motorized fans and their associated energy consumption and noise.
Solution Approach 2:
The patent replaces the mechanical cooling system (motorized fans) with a passive thermal convection system. The inclined roof structure and vertical air flow path utilize natural buoyancy forces to achieve effective cooling without mechanical intervention.
3Temperature
If motorized fans are installed for cooling, then the cooling performance is improved, but the device complexity and maintenance requirements increase
Solution Approach 1:
The passive cooling system with inclined roof structure requires no external power source, control systems, or moving parts. The design uses natural convection currents to achieve cooling, dramatically simplifying the device and eliminating maintenance requirements associated with motorized fans.
Solution Approach 2:
The patent extracts and removes the motorized fan component from the cooling system, replacing it with a passive structural solution. This extraction eliminates the complexity and maintenance burden while retaining adequate cooling performance through architectural design of the housing and roof structure.
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 solution provides effective, energy-efficient, and quiet cooling of high-pressure electrolyzers, reducing noise and maintenance costs while allowing for compact and cost-effective integration into standard racks.
Implementation Method 1
a cool air inlet arranged vertically below the heat-emitting device holding structure, configured to enable cool air to flow into the heat-emitting device chamber
Implementation Method 2
a hot air outlet arranged vertically above the heat-emitting device holding structure to enable heated air received into the heat-emitting device chamber as cool air via the cool air inlet to exit the heat-emitting device chamber
Implementation Method 3
the housing has a roof structure extending inwards in the heat-emitting chamber, the roof structure being configured to direct heated air in the heat-emitting device chamber towards the hot air outlet
Data Source
AI summary
A rack-mount box (1″) for a heat-emitting device, wherein the rack-mount box (1″) comprises: a housing (3′) forming a heat-emitting device chamber, and a heat-emitting device holding structure (77) arranged in the heat-emitting device chamber and configured to support a heat-emitting device, a cool air inlet (71) arranged vertically below the heat-emitting device holding structure (77), configured to enable cool air to flow into the heat-emitting device chamber, the heat-emitting device holding structure (77) being configured to enable cool air to flow vertically past the heat-emitting device holding structure (77), wherein the housing (3) has a wall (3d) provided with a hot air outlet (73) arranged vertically above the heat-emitting device holding structure (77) to enable heated air received into the heat-emitting device chamber as cool air via the cool air inlet (71) to exit the heat-emitting device chamber, wherein the housing (3) has a roof structure (79) extending inwards in the heat-emitting chamber, the roof structure (79) being configured to direct heated air in the heat-emitting device chamber towards the hot air outlet (73).