System and method for controlling cooling of an electrolyzer unit

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Solution Overview

Problem

Existing cooling methods for electrolyzer units, such as using water or air, are inefficient or costly, particularly in water-scarce areas, and can lead to overheating, reducing production capacity and efficiency.

Innovation Solution

A system utilizing cryogenic air cooling through an air separation unit to produce a liquid air stream, which is mixed with ambient air in a heat exchanger to manage temperature effectively, maintaining the electrolyzer unit within an optimal operating range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If water is used as coolant, then cooling effectiveness is improved, but cost and water consumption increase

Engineering Contradiction:
Improvecooling effectivenessVSAvoidwater consumption
Core Design Contradiction:
TemperatureVSQuantity of substance

Solution Approach 1:

The invention changes the physical state of air from gaseous to liquid form by cooling it to cryogenic temperatures, transforming it into an effective coolant that replaces water. This parameter change allows air to absorb significant heat from the electrolyzer while consuming no water resources.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention uses ambient air, which is freely available and costs nothing, as the cooling medium. The liquid air is generated on-demand and used immediately for cooling, eliminating the need for expensive water coolant and associated infrastructure.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Quantity of substance

If ambient air is used for cooling, then cost is reduced, but cooling effectiveness decreases when air temperature is high

Engineering Contradiction:
Improvecoolant availabilityVSAvoidcooling effectiveness
Core Design Contradiction:
Quantity of substanceVSTemperature

Solution Approach 1:

The invention utilizes the phase transition of air from gas to liquid state. By cooling ambient air to cryogenic temperatures and liquefying it, the system creates a highly effective coolant that can absorb large amounts of heat from the electrolyzer, regardless of the original ambient air temperature.

Inventive Principle:
Principle #36Phase transitions

Solution Approach 2:

The system fundamentally changes the temperature parameter of air from ambient conditions to cryogenic temperatures, transforming it into a powerful cooling agent. This parameter transformation allows the air to effectively cool the electrolyzer even when ambient temperatures are high.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If traditional cooling systems are used, then simplicity is maintained, but reliability decreases due to overheating

Engineering Contradiction:
Improvesystem simplicityVSAvoidoperational reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system uses ambient air itself as the source material for creating the coolant, eliminating the need for separate coolant storage, handling, and disposal systems. The air is drawn from the environment, liquefied on-demand, and used for cooling, creating a self-sufficient cooling cycle that improves reliability.

Inventive Principle:
Principle #25Self-service

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 method efficiently cools the electrolyzer unit, optimizing its performance, reducing energy consumption, and enhancing reliability while avoiding the use of costly water resources.

Implementation Method 1

an air separation unit to produce a liquid air stream

Methodology Applied
Scientific EffectCryogenic cooling: Cryogenics

Implementation Method 2

produce the liquid air stream

Methodology Applied
Scientific EffectPhase change: Phase Change

Implementation Method 3

The method further includes controlling the first heat exchanger unit to mix the liquid air stream with the ambient air. The mixing of the liquid air stream and the ambient air causes transfer of heat therebetween.

Methodology Applied
Scientific EffectHeat transfer: Heat Exchanger

Data Source

PatentUS20250236968A1System and method for controlling cooling of an electrolyzer unit
Publication Date: 2025.07.24 ACWA POWER CO
  • US20250236968A1 patent drawing
  • US20250236968A1 patent drawing
  • US20250236968A1 patent drawing

AI summary

A method and an apparatus for a cooling of an electroyzer unit is described. The apparatus receives a temperature value associated with ambient air in proximal to the electrolyzer unit. The apparatus compares the temperature value with a predefined temperature threshold. The apparatus controls a supply of a liquid air stream from an air separation unit to a first heat exchanger unit based on the comparison. The apparatus control the first heat exchanger unit to mix the liquid air stream with the ambient air. The mixing of the liquid air stream and the ambient air causes transfer of heat therebetween. The apparatus controls a cooling of the electrolyzer unit based on the mixing.