Passive CO2 Control Valve for Processor Temperature-Responsive Cooling
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Solution Overview
Problem
In data centers, existing cooling systems face challenges in efficiently managing varying heat output from multiple processors, as they require 'on-demand' cooling that adjusts to instantaneous changes in heat production, often leading to inefficient energy consumption and potential overheating.
Innovation Solution
A Passive Temperature Gate control valve system that automatically regulates the flow of coolant fluid to processors based on their heat output, using a bimetallic valve member that changes shape with temperature to open or close, allowing for real-time adjustment of coolant flow without external power or sensors, ensuring each processor remains within a desired operating temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a passive control valve with bimetallic valve member is used to regulate coolant flow, then energy consumption is reduced and temperature control is simplified, but the valve complexity increases due to the bimetallic mechanism
Solution Approach 1:
The bimetallic valve member automatically responds to temperature changes without requiring external power sources, sensors, or control systems. The valve regulates coolant flow based on the thermal state of the processor, making the system self-regulating and eliminating the need for active control components.
Solution Approach 2:
The bimetallic valve member changes its physical shape in response to temperature parameter changes. As the processor heats up, the bimetallic strip deforms to open the valve and increase coolant flow; when the processor cools down, the strip returns to its original shape to close the valve and reduce flow.
2Reliability
If coolant flow is increased to meet peak heat output demands, then processors are prevented from overheating, but energy is wasted when processors are operating at low heat output
Solution Approach 1:
The control valve dynamically adjusts coolant flow rate based on real-time processor temperature conditions. The bimetallic valve member continuously changes the valve opening degree in response to temperature fluctuations, enabling the cooling system to adapt to varying processor heat output and avoid both overheating and energy waste.
Solution Approach 2:
The system implements passive feedback through the bimetallic valve member, which directly senses processor temperature and automatically adjusts coolant flow accordingly. The thermal state of the processor feeds back to the valve mechanism, creating a closed-loop control system that regulates cooling based on actual heat generation.
3Measurement precision
If active sensors and control systems are used to regulate coolant flow, then precise temperature control is achieved, but device complexity and energy consumption increase
Solution Approach 1:
The bimetallic valve member serves as both the temperature sensing element and the control actuator, eliminating the need for separate sensors, controllers, and power systems. The valve directly converts temperature changes into mechanical displacement that regulates coolant flow, creating a simple yet effective self-regulating system.
Solution Approach 2:
The patent replaces electronic sensing and control systems with a purely mechanical bimetallic mechanism. The bimetallic strip's thermal deformation directly controls the valve opening, substituting complex electronic measurement and control infrastructure with a simple thermal-mechanical response system.
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 solution enables efficient, real-time temperature control of processors, minimizing energy consumption by providing adequate cooling only when needed, thus preventing overheating and optimizing cooling system performance.
Implementation Method 1
A valve member is disposed in the chamber which is responsive to changes of temperature of the coolant fluid within the chamber to effect movement of the valve member between a closed position and an open position. The valve member is of a material that changes shape in response to the temperature of the coolant fluid within the chamber.
Data Source
AI summary
A method of cooling or heating a plurality of computer processor heat sources, such as processors in a data center or the like, is disclosed with individual sources having a control valve associated therewith. Individual heat sources are in communication with a supply of a coolant fluid and individual control valves have an inlet for receiving coolant fluid from its respective computer processor heat source reflective of the heat source temperature. The control valve has a chamber with an inlet that receives coolant, and an outlet. A valve member within the chamber is movable in response to changes in temperature of the coolant fluid within the chamber between a closed position and an open position. The valve member is of a material that changes shape in response to changes in temperature. The coolant is carbon dioxide (CO2) that is in its supercritical state as it passes through the heat sources.