Expandable Reaction Chamber for Hydrogen Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydrogen fuel cell systems face challenges in efficiently and compactly storing and delivering hydrogen due to limitations in volume efficiency and the need for frequent refueling, which affects their practical application in portable devices.
Innovation Solution
A hydrogen gas generating apparatus with a moveable partition and collapsible receptacle system that utilizes a solid reactant component and liquid reactant component to produce hydrogen gas, where the liquid reactant is transported through a fluid path to the reaction chamber, and a control system regulates the reaction to optimize hydrogen production and volume utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If a fixed-volume reaction chamber is used to store hydrogen reactants, then the initial structure is simple and compact, but the volume efficiency decreases as reactants are consumed and the chamber cannot expand to utilize the space created by the collapsing liquid receptacle
Solution Approach 1:
The reaction chamber incorporates a moveable partition that can shift position along the longitudinal axis of the housing. This dynamic element allows the reactant zone volume to expand as the liquid reactant receptacle collapses during operation, thereby maintaining high volume efficiency and maximizing hydrogen generating capacity throughout the entire operational cycle
2Productivity
If the liquid reactant receptacle is rigid and fixed, then the structure is simple, but it cannot efficiently transfer liquid reactant to the reaction chamber as space becomes available during operation
Solution Approach 1:
The liquid reactant receptacle is designed as a collapsible structure that can dynamically change its volume and shape as liquid is transferred to the reaction chamber. This dynamic design allows the receptacle to efficiently utilize available space and maintain continuous contact with the moveable partition, maximizing transport efficiency without requiring complex active pumping mechanisms
Solution Approach 2:
The system utilizes pressure differential created by the collapsing liquid receptacle to drive liquid reactant through the fluid path into the reaction chamber. The moveable partition acts as a piston, converting the volume reduction of the receptacle into hydraulic pressure that pushes liquid through the tubular members and into the reactant zone
3Reliability
If the moveable partition is made of solid non-porous material, then it provides good mechanical strength and sealing, but it prevents hydrogen gas from passing through to the fuel cell
Solution Approach 1:
The moveable partition is constructed from porous material that allows hydrogen gas molecules to pass through via diffusion and pressure-driven flow. The porous structure maintains mechanical strength and sealing capability while enabling selective permeability to hydrogen gas, thus resolving the contradiction between structural integrity and gas delivery functionality
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
The apparatus achieves high hydrogen generating capacity with a compact design, allowing for efficient use of space as reactants are consumed, and provides a reliable fuel supply for hydrogen fuel cells, enhancing their usability in portable electronic devices.
Implementation Method 1
The solid reactant component reacts with the liquid reactant component within the reaction chamber to generate hydrogen gas
Data Source
AI summary
A hydrogen gas generating apparatus for providing hydrogen gas to a fuel cell stack is provided. The apparatus includes an expandable reaction chamber containing a solid reactant component and a collapsible receptacle containing a liquid reactant component with a housing. The reaction chamber includes an expandable reactant zone defined by a moveable partition that retains the reactants and reaction products within the reaction chamber. The apparatus also includes a liquid transport control system and a fluid path for transporting the liquid reactant component from the collapsible receptacle to the reactant zone in the reaction chamber, where the liquid and solid reactant components react to generate hydrogen gas. The receptacle collapses with a corresponding expansion of the reaction chamber as liquid reactant component is used, and the reactant zone expands within the reaction chamber in response to pressure from the increasing volume of reaction products on the moveable partition. Volume exchange among the expandable reaction chamber, the expandable reactant zone and the collapsible receptacle provides a high volume of hydrogen gas from a hydrogen generating apparatus of limited volume.