Variable-Frequency Heat Dissipation Control for Immersion Cooling
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Solution Overview
Problem
Conventional immersion liquid cooling systems have a narrow temperature control range and limited adaptability due to single-variable temperature control, which restricts their application in complex environments.
Innovation Solution
A heat dissipation control system that jointly controls the temperature of a coolant in an immersion liquid cooling system by adjusting the flow rate of a radiator and the number or frequency of dry coolers using variable-frequency drivers, based on the difference between secondary-side liquid supply temperature and a preset temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional single-variable temperature control method is used in the immersion liquid cooling system, then the control system is simple, but the temperature control range is narrow and environmental adaptability is limited
Solution Approach 1:
The patent implements dynamic multi-variable control by making the coolant temperature control system adjustable through multiple variables: circulation pump flow rate, radiator fan speed, and dry cooler fan speed. This dynamic adjustment capability allows the system to adapt to different environmental conditions and temperature requirements, resolving the contradiction between simple control and wide adaptability.
Solution Approach 2:
The patent changes multiple system parameters simultaneously to achieve wide temperature control range: (1) circulation pump flow rate parameter, (2) radiator fan speed parameter, and (3) dry cooler fan speed parameter. By adjusting these parameters in combination, the system can control coolant temperature from -30°C to 50°C, resolving the narrow temperature control range limitation of conventional single-parameter control.
2Loss of energy
If water-based cooling is used for heat dissipation, then cooling efficiency is high, but water resources are consumed
Solution Approach 1:
The patent implements a dynamic switching mechanism between water-based cooling (radiator) and air-based cooling (dry cooler) modes. The control system automatically selects the appropriate cooling mode based on temperature requirements and environmental conditions, allowing the system to achieve high cooling efficiency when water cooling is needed while conserving water resources by using air cooling when sufficient, thereby resolving the contradiction between cooling efficiency and water consumption.
Solution Approach 2:
The patent designs the heat dissipation system with multi-functionality by integrating both water-based radiator cooling and air-based dry cooler capabilities into a single system. This universal heat dissipation system can operate in different modes (water cooling only, air cooling only, or combined mode) depending on requirements, allowing the system to maintain high cooling efficiency while reducing water resource dependency.
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 approach enables wide temperature control and enhances environmental adaptability, while also saving water resources by utilizing dry coolers for heat dissipation.
Implementation Method 1
a circulation pump, configured to move the coolant from the immersion tank to the radiator
Implementation Method 2
a radiator, configured to dissipate heat of the coolant to cooling medium water
Implementation Method 3
a plurality of dry coolers, each configured to dissipate heat of the cooling medium water to an outside environment
Implementation Method 4
a plurality of dry coolers, each configured to dissipate heat of the cooling medium water to an outside environment
Implementation Method 5
a fan, configured to increase air flow through the dry cooler
Implementation Method 6
a temperature sensor, configured to detect a temperature of the coolant or the cooling medium water
Data Source
AI summary
A heat dissipation control system, a heat dissipation method, and an immersion liquid cooling system are provided. The heat dissipation control system includes a radiator, a circulation pump, a fan, dry coolers, a temperature sensor, a first and a second variable-frequency drivers, and a heat dissipation controller. The temperature sensor is used for collecting a secondary-side liquid supply temperature. The heat dissipation controller is used for generating a control signal for the first and the second variable-frequency drivers based on a difference value between the secondary-side liquid supply temperature and a preset temperature. The first variable-frequency driver is used for controlling a frequency of the circulation pump so as to adjust a flow rate of a coolant flowing into the radiator. The second variable-frequency driver is used for activating or deactivating at least one of the dry coolers, and controlling a frequency of the fan.