Data Center Air Precooling With Heat Exchangers
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Solution Overview
Problem
Data centers face challenges with high energy consumption, complex infrastructure, scalability issues, environmental impact, water usage, and potential system failure due to conventional cooling systems, which are inefficient and inflexible.
Innovation Solution
A precooling system using heat exchangers to extract heat from air before it enters computer racks, utilizing ambient air and a circulating fluid to reduce the temperature without mechanical cooling, integrating seamlessly with existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air conditioning systems are used to cool data centers, then the temperature of computer equipment is maintained within optimal operating ranges, but energy consumption increases significantly and operational costs rise
Solution Approach 1:
The system performs preliminary cooling by directing outside air through heat exchangers positioned at the cold aisle level before the air reaches the computer equipment. This pre-cools the air that will be drawn into the equipment, reducing the cooling load on conventional air conditioning systems and thereby reducing energy consumption while maintaining effective temperature control
Solution Approach 2:
The patent introduces heat exchangers as intermediary devices between the outside environment and the computer equipment. These heat exchangers transfer heat from the inside air to the outside air, acting as a thermal mediator that reduces the temperature of air entering the equipment without requiring direct mechanical cooling of the equipment itself
2Temperature
If conventional air conditioning systems are deployed, then cooling capacity is provided, but infrastructure complexity and maintenance requirements increase
Solution Approach 1:
The system extracts the cooling function from the conventional air conditioning infrastructure by using heat exchangers that leverage outside air temperature differentials. This separates the precooling function from the main AC system, reducing infrastructure complexity while maintaining cooling capacity
Solution Approach 2:
The heat exchangers utilize the natural temperature differential between inside and outside air to provide cooling without requiring additional mechanical cooling equipment. The system serves itself by using ambient conditions to perform the cooling function, reducing infrastructure complexity and maintenance requirements
3Use of energy by moving object
If heat exchangers are used to precool air, then energy consumption is reduced, but the system may not provide sufficient cooling in high ambient temperature conditions
Solution Approach 1:
The system dynamically adjusts its operation based on ambient conditions. When outside air temperature is favorable, the heat exchangers operate to precool air. When ambient temperatures are high, the system can reduce or discontinue heat exchanger operation, allowing conventional AC systems to handle the full cooling load, thus maintaining cooling effectiveness while preserving energy efficiency when conditions permit
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
Reduces energy and water consumption, enhances cooling efficiency, and minimizes environmental impact while maintaining system reliability and flexibility, allowing for scalable data center operations.
Implementation Method 1
A first heat exchanger may be provided and configured to accept air from the enclosed containment space. The first heat exchanger may include a first plurality of heat-exchanging fluid passages configured to extract heat from the air passing from the first air inlet to the first air outlet
Implementation Method 2
The heat from the passing air may be extracted into the fluid circulating through the first plurality of fluid passages
Implementation Method 3
A fluid pump may be provided and configured to circulate the fluid between the first heat exchanger and the second heat exchanger
Implementation Method 4
The second heat exchanger may include a second plurality of heat-exchanging fluid passages configured to extract heat from the fluid circulating therethrough, thereby cooling the passing fluid
Data Source
AI summary
A precooling system for a data center comprises a containment structure configured to direct warm air coming out of the back side of a computer rack into the first inlet of a first heat exchanger. Circulating fluid in the first heat exchanger is used to cool the air before releasing it toward the recirculation on the other side of the computer rack so as to air-cool the computer equipment inside the computer rack. A second heat exchanger may be used to cool the returning warm fluid. The second air inlet and the second air outlet of the second heat exchanger may be located outside the data center. The precooling system may be used in addition to a conventional air conditioning system to service the data center so as to reduce the energy consumption required to keep the data center at the optimal temperature.