Dual Loop Liquid Cooling System Cost Reduction

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Solution Overview

Problem

Existing cooling systems for electronic components require large amounts of cooling liquid, which increases costs due to the use of high-cost liquids like oil or dielectric liquids.

Innovation Solution

A liquid cooling device with a dual cooling loop system, where a high-cost cooling liquid is used in one loop and a lower-cost liquid, such as water, is used in another loop, with a heat exchanger facilitating heat exchange between the two loops, thereby reducing the need for high-cost liquid in the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single cooling loop with high-cost cooling liquid (oil or dielectric liquid) is used, then reliable cooling performance is achieved, but the cost and quantity of cooling liquid increase significantly

Engineering Contradiction:
Improvecooling performance reliabilityVSAvoidamount of cooling liquid
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The cooling system is divided into two independent cooling loops: a first cooling loop using high-cost cooling liquid (oil or dielectric liquid) for reliable cooling performance, and a second cooling loop using lower-cost liquid (water) for cost reduction. The heat exchanger enables thermal coupling between the two loops, allowing the system to achieve both reliability and cost efficiency by segmenting the cooling function across two loops with different liquid types.

Inventive Principle:
Principle #1Segmentation

2Temperature

If a single cooling loop with high-cost cooling liquid is used, then effective heat dissipation is achieved, but the system cost increases

Engineering Contradiction:
Improveheat dissipation effectivenessVSAvoidamount of high-cost cooling liquid
Core Design Contradiction:
TemperatureVSQuantity of substance

Solution Approach 1:

A heat exchanger is introduced as an intermediary component between the first cooling loop (using high-cost cooling liquid) and the second cooling loop (using low-cost liquid). The heat exchanger transfers thermal energy from the first loop to the second loop, enabling the system to maintain effective heat dissipation through the high-cost liquid while reducing the overall quantity of expensive cooling liquid required by utilizing the low-cost liquid in the second loop.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If cooling liquid is transported to external cooling distribution units through manifolds, then heat exchange can be performed, but the amount of cooling liquid required in manifolds and external units increases

Engineering Contradiction:
Improveheat exchange capabilityVSAvoidamount of cooling liquid in manifolds and external units
Core Design Contradiction:
TemperatureVSQuantity of substance

Solution Approach 1:

The heat exchanger is integrated directly into the liquid cooling device, merging the heat exchange function with the cooling system itself. This eliminates the need for separate external cooling distribution units and manifolds, thereby reducing the amount of cooling liquid required in these auxiliary components while maintaining effective heat exchange capability between the two cooling loops.

Inventive Principle:
Principle #5Merging (Combining)

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 configuration effectively reduces the amount of high-cost cooling liquid required, saving costs and optimizing the use of liquids in the cooling system.

Implementation Method 1

The heat exchanger is located between the first cooling loop and the second cooling loop. The cooling liquid in the first cooling loop exchanges heat through the heat exchanger.

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

The cooling liquid in the first cooling loop exchanges heat through the heat exchanger, allowing thermal energy to be transferred from the high-cost cooling liquid to the lower-cost liquid in the second cooling loop.

Methodology Applied
Scientific EffectThermal energy transfer: Conduction (thermal)

Data Source

PatentUS20250203811A1Cooling system and liquid cooling device
Publication Date: 2025.06.19 WISTRON CORP
  • US20250203811A1 patent drawing
  • US20250203811A1 patent drawing
  • US20250203811A1 patent drawing

AI summary

A cooling system includes an electronic device and a liquid cooling device. The liquid cooling device includes a casing, a first inlet, a first outlet, a second inlet, a second outlet, a first tank, a first pump and a heat exchanger. The first inlet is disposed on the casing and connected to the electronic device. The first outlet is disposed on the casing and connected to the electronic device. The second inlet and the second outlet are disposed on the casing. The first tank is disposed in the casing. The first pump is disposed in the casing. The heat exchanger is disposed in the casing. The first inlet, the heat exchanger, the first pump, the first tank and the first outlet form a first cooling loop. The second inlet, the heat exchanger and the second outlet form a second cooling loop.