Stackable Fuel Cell Generator with Shared Exhaust Plenum
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Solution Overview
Problem
Current fuel cell systems are too large for small urban spaces and lack a simple way to connect to ducting systems for indoor applications, posing challenges in size and installation flexibility.
Innovation Solution
A power module system with vertically stacked power modules and a shared exhaust plenum, allowing for modular design and easy integration with ducting systems, along with air-cooled electronics modules that utilize split air zones to prevent corrosion and provide efficient cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If fuel cell systems are designed with traditional configurations, then they provide sufficient power generation capacity, but they become too large to fit into small urban spaces and difficult to move around inside buildings
Solution Approach 1:
The fuel cell system is divided into multiple modular units that can be vertically stacked. Each module contains its own fuel cell stack, plenum, and support structure, allowing the system to be segmented into discrete, movable components that can be assembled in various configurations to achieve desired power capacity while maintaining compact footprint
Solution Approach 2:
The system transitions from horizontal expansion to vertical stacking by arranging fuel cell modules in the vertical dimension. Multiple modules are stacked one on top of another, utilizing vertical space rather than horizontal space, which reduces the system's footprint and allows installation in small urban spaces and interior building locations
2Adaptability or versatility
If fuel cell systems use traditional exhaust configurations, then they can operate independently, but they lack a simple way to connect to ducting systems for indoor applications
Solution Approach 1:
The exhaust plenum is designed with dual functionality: it serves as both the exhaust collection chamber for the fuel cell stacks and as an integrated ducting connection interface. The plenum includes standardized connection ports that can directly interface with building HVAC ducting systems, allowing the same component to perform multiple functions and simplify installation
Solution Approach 2:
The exhaust plenum merges the exhaust collection function with the ducting interface function into a single integrated component. Rather than having separate exhaust chambers and connection interfaces, the plenum combines these functions, and multiple plenums can be connected together to form an integrated exhaust distribution network for the entire stacked system
3Temperature
If electronics modules are exposed to exhaust gases for cooling, then they can be air-cooled efficiently, but the electronics become susceptible to corrosion from exhaust exposure
Solution Approach 1:
Different regions of the electronics module are assigned different functions: one region (the electronics chamber) is protected from exhaust exposure while another region (the heat exchange surface) interfaces with the exhaust flow for cooling. The module has localized qualities where the electronics are isolated in a protected environment while the cooling function is performed at a separate interface point
Solution Approach 2:
A heat exchange mechanism serves as an intermediary between the exhaust gases and the electronics. The exhaust flow passes over heat exchange surfaces that are thermally coupled to the electronics, allowing heat transfer without direct exposure of the electronics to the corrosive exhaust environment. The intermediary transfers thermal energy while isolating the electronics from chemical exposure
Data Source
AI summary
A power module system includes a plurality of vertically stacked power modules. The plurality of vertically stacked power modules include at least two vertical stacks. A shared exhaust plenum is located between the at least two vertical stacks of power modules.