Vertical Exhaust Duct for Electronic Enclosure Thermal Management
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Solution Overview
Problem
Current thermal management systems in data centers, particularly in high-density applications, face challenges with recirculation and bypass issues, leading to inefficient cooling and increased operating temperatures due to the Hot Aisle/Cold Aisle approach, which is difficult to maintain and requires strict airflow balancing.
Innovation Solution
The design of an electronic equipment enclosure with a self-supporting, adjustable, and extendible exhaust air duct that segregates hot air from cool air, featuring a rectangular cross-section and a telescoping or collapsible structure to improve airflow and thermal management by directing hot exhaust air away from the enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the Hot Aisle/Cold Aisle approach is used for thermal management, then cooling efficiency is improved, but the system becomes difficult to maintain and requires strict airflow balancing
Solution Approach 1:
The exhaust air duct extracts hot exhaust air from the enclosure and directs it away from the cold air intake area. This separates the hot and cold air flows physically, eliminating the need for complex airflow balancing while maintaining the benefits of hot/cold aisle thermal management.
Solution Approach 2:
The exhaust air duct acts as an intermediary element that captures hot air at the exhaust opening and transports it to a discharge location away from the enclosure. This mediator prevents hot air from mixing with cold air, simplifying the thermal management system.
2Temperature
If recirculation and bypass issues are present, then thermal management efficiency decreases and operating temperatures increase
Solution Approach 1:
The exhaust air duct captures the potentially harmful hot exhaust air that would otherwise cause recirculation and bypass problems. By directing this hot air away from the enclosure, the system converts a harmful thermal condition into a controlled exhaust flow, improving thermal management efficiency and lowering operating temperatures.
3Ease of manufacture
If a fixed exhaust duct design is used, then manufacturing is simplified, but adaptability to different enclosure sizes and configurations is reduced
Solution Approach 1:
The exhaust air duct incorporates adjustable and extendible features that allow it to adapt to different enclosure sizes and configurations. The duct can be adjusted to different angles, positions, and lengths while maintaining a relatively simple manufacturing process, achieving both ease of manufacture and adaptability.
Solution Approach 2:
The exhaust air duct is designed as a segmented or modular structure with adjustable sections. This allows the duct to be configured for different enclosure types while keeping each individual segment relatively simple to manufacture. The modular design enables adaptability without requiring complete redesign for each application.
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 thermal management by reducing recirculation and bypass, allowing for more efficient cooling and improved airflow, thereby maintaining optimal operating temperatures and increasing the heat load capacity of the enclosure.
Implementation Method 1
exhaust air duct extending upward from the top panel of the compartment
Implementation Method 2
exhaust air duct is adapted to segregate hot air being exhausted from the compartment from cool air entering the compartment
Data Source
AI summary
An arrangement of ducted exhaust equipment enclosures includes a row of electronic equipment enclosures and a vertical wall rising from, and extending along, the tops of the electronic equipment enclosures. Each enclosure includes a frame structure formed from a plurality of support posts and cross members, and a plurality of panels, including a top panel, at least partially enclosing the frame structure and defining a single compartment for mounting an electronic component. The top panel and upper portions of the frame structure form a top of the electronic equipment enclosure, the electronic equipment enclosure top having a rectangular opening therein and also an outer perimeter. The rectangular opening has a front bound, a rear bound, and two side bounds, and has a side-to-side width that is at least 75% of a side-to-side width of the electronic equipment enclosure top perimeter. The vertical wall is formed by a row of air duct panels, each extending upward from a respective electronic equipment enclosure top and forming part of an air duct. The side-to-side width of a lower section of each air duct panel is substantially the same as the side-to-side width of the rectangular opening in the respective electronic equipment enclosure top, an the lower section of each air duct panel is disposed immediately adjacent, and aligned with, the rear bound of the opening in the respective electronic equipment enclosure top such that an interior of the air duct is in direct and unobstructed fluid communication with an interior of the single compartment.