Integrated Cabinet Cooling with Directed Airflow and Backup Venting
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Solution Overview
Problem
Existing electronic equipment cabinets with built-in cooling systems face challenges in efficiently managing high heat loads, particularly with newer computing devices that consume more power and generate higher heat, as existing systems are insufficient in cooling capacity and fail to respond quickly to instantaneous heat changes, leading to inefficient ventilation and temperature fluctuations.
Innovation Solution
A high-capacity closed-loop refrigeration system integrated into the cabinet, with a modified airflow path and a backup ventilation system powered by auxiliary power, allowing for predictive cooling based on input power monitoring and efficient heat removal through directed airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the cooling system capacity is increased to handle higher heat loads (10 KW to 15 KW), then the cooling capacity is improved, but the system size increases and consumes about half of the cabinet space or causes clearance problems with room ceilings
Solution Approach 1:
The evaporator is configured in a vertical orientation extending along the height of the cabinet, utilizing the vertical dimension to maximize heat exchange surface area without occupying additional horizontal floor space. This dimensional reorientation allows the system to achieve high cooling capacity (10-15 KW) while fitting within standard cabinet dimensions.
Solution Approach 2:
The refrigeration system components are nested within the cabinet structure, with the evaporator integrated into the cabinet's vertical space and the condenser positioned to utilize available volume efficiently. This nested arrangement allows the high-capacity cooling system to be contained within the cabinet footprint without requiring external space.
2Device complexity
If conventional room air conditioning is used to remove heat, then the system complexity is kept simple, but it becomes increasingly difficult to remove heat as electronic equipment density increases
Solution Approach 1:
The cooling system is segmented into distinct functional modules: a condenser portion, an evaporator portion, and a refrigerant circulation system. This segmentation allows each component to be optimized for its specific function while maintaining overall system simplicity. The modular design enables the system to handle high heat loads from dense electronic equipment without requiring complex external cooling infrastructure.
3Power
If the cooling system is made larger to increase cooling capacity, then the cooling capacity is improved, but the system occupies more cabinet space and causes clearance problems
Solution Approach 1:
The evaporator is configured in a vertical orientation extending along the height of the cabinet, utilizing the vertical dimension to maximize heat exchange surface area without occupying additional horizontal floor space. This dimensional reorientation allows the system to achieve high cooling capacity (10-15 KW) while fitting within standard cabinet dimensions.
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 a more efficient, higher-capacity cooling system that anticipates heat loads, operates in less space, and maintains stable temperatures by monitoring input power and adjusting cooling capacity, ensuring effective heat removal and quick response to heat changes.
Implementation Method 1
a compressor for compressing refrigerant in the system to an elevated pressure
Implementation Method 2
a condenser to cool the refrigerant that is heated by the act of compression
Implementation Method 3
an expansion device that thermodynamically cools the refrigerant
Implementation Method 4
an evaporator that is cooled by the cooled refrigerant flowing therethrough
Implementation Method 5
a fan to move air across the evaporator's surfaces to cool the air whereby the refrigerant in turn absorbs heat from the warmer air
Implementation Method 6
a fan to move air across the evaporator's surfaces to cool the air
Implementation Method 7
The first and second dampers can be configured to open during a power failure and allow air to escape the first portion through the third portion
Data Source
AI summary
The disclosure provides an improved cooling system and associated cabinet for electronic equipment, and optionally, a backup ventilation system for cooling related failures. Generally, the disclosure includes a high capacity closed loop refrigeration system in a modified cabinet, while accommodating standard sized computer equipment. Further, the system provides directed heat removal by altering typical airflow paths within the cabinet. The backup ventilation system is powered by auxiliary power in the case of power failure and uses the same fan(s) for ventilation as is used for cooling. The disclosure provides a more efficient, higher capacity cooling cabinet in less space than otherwise known in the art. Further, the cooling system can anticipate heat loads and therefore operate in a predictive capacity by monitoring input power to the electronic equipment and adjusting the cooling for the expected increase or decrease in heat load generated based on the input power.