Multizone Variable Damper for IT Rack Cooling Airflow Control
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Solution Overview
Problem
Current IT rack cooling systems in data centers inefficiently distribute cooling air, directing the same volume to all areas based on the highest temperature, leading to unnecessary energy consumption and inefficient cooling, as they do not account for varying heat generation across different zones of an IT rack.
Innovation Solution
A multizone variable damper with movable members and actuators that define and adjust air passageway zones, allowing for varying airflow to different areas of an IT rack based on temperature or pressure differential, ensuring that more cooling air is directed to hotter zones and less to cooler zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the same volume of cooling air is directed to all areas of an IT rack based on the highest temperature, then the hottest area is cooled adequately, but energy consumption increases and cooler areas receive unnecessary cooling
Solution Approach 1:
The air passageway is divided into multiple zones with movable members that can independently control airflow to different areas of the IT rack. Each zone can be adjusted based on the specific cooling needs of the equipment in that area, allowing differentiated cooling strategies rather than uniform cooling across the entire rack.
Solution Approach 2:
Different zones of the air passageway are equipped with adjustable movable members that can be positioned to provide varying degrees of airflow restriction or promotion. This allows each local area to receive the specific amount of cooling air it needs based on the heat generation characteristics of the equipment in that zone.
2Reliability
If the same volume of cooling air is supplied to all zones, then all areas receive cooling, but cooling efficiency decreases due to oversupplying cooler areas
Solution Approach 1:
The movable members in each zone can be dynamically adjusted to change the airflow characteristics in real-time. This dynamic adjustment capability allows the system to optimize cooling efficiency by matching airflow supply with actual cooling demands in each zone, rather than maintaining a fixed uniform airflow distribution.
Solution Approach 2:
The system allows for partial airflow to be directed to zones that require less cooling, rather than supplying full airflow to all zones. The movable members can be positioned to restrict airflow to areas that are already cool, providing only the minimal necessary cooling while directing more air to hotter zones.
3Productivity
If movable members are added to create multizone control, then airflow can be optimized for each zone, but device complexity increases
Solution Approach 1:
The movable members are positioned within the existing air passageway structure, nesting the control mechanism within the available space. This allows multizone control to be implemented without requiring a completely separate external control system, thereby limiting the increase in overall device complexity.
Data Source
AI summary
A multizone variable damper for air passageways having a plurality of damper zones, a plurality of opposed blades that are rotatable about a horizontal axis, a pair of blades of the plurality of blades being provided in each zone of the plurality of damper zones, and an actuator for each pair of blades, each actuator being configured to independently rotate each of the pairs of blades of the plurality of opposed blades so as to selectively and independently control a degree of openness of each of the pairs of blades of the plurality of opposed blades in each damper zone of the plurality of damper zones.