Ruminant Methane Combustion Module With Thermal Buffer Ignition Safety
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Solution Overview
Problem
Ruminant animals produce significant methane emissions during enteric fermentation, which contribute to global warming, and existing mitigation methods like dietary modifications and microbial additives are limited in effectiveness and practicality, with challenges in safe ignition and thermal management of combustion systems.
Innovation Solution
A compact, self-contained methane combustion apparatus mounted on ruminants that captures methane from the rumen, converts it into carbon dioxide and water vapor through controlled combustion, using a pressure-activated valve, spark ignition, and thermal management with a water-filled buffer, powered by a photovoltaic panel and rechargeable battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If methane is captured and combusted to convert it into carbon dioxide, then methane emissions are reduced and global warming potential is lowered, but thermal management becomes challenging and safety risks increase
Solution Approach 1:
The system converts harmful methane emissions into less harmful carbon dioxide through controlled combustion. The methane captured from the rumen is burned in a combustion chamber, transforming it from a potent greenhouse gas into carbon dioxide and water vapor, which have lower global warming potential.
Solution Approach 2:
The system uses phase transition of water in the form of a thermal buffer reservoir. Water absorbs heat during combustion through phase change and thermal conduction, moderating the exhaust temperature and managing thermal output safely.
2Object-generated harmful factors
If a combustion system is integrated with a live animal, then methane conversion is achieved, but ensuring safe ignition and avoiding harm to the animal becomes difficult
Solution Approach 1:
The system performs preliminary safety checks before ignition by using sensors to detect overhead obstructions such as vegetation. The control unit evaluates these sensor readings and suppresses ignition events when obstacles are detected, preventing wildfires or harm to the animal before they can occur.
Solution Approach 2:
The system uses feedback from sensors monitoring the environment and animal conditions to control the ignition process. The control unit continuously receives data from sensors and adjusts or suppresses ignition based on real-time conditions, ensuring safety throughout the combustion process.
3Ease of operation
If the combustion process is made autonomous with intermittent operation, then field operation capability is improved, but ensuring sufficient power and autonomous control becomes complex
Solution Approach 1:
The system is designed to operate autonomously without human intervention. The control unit automatically manages the combustion process, ignition timing, and monitoring based on pre-programmed parameters and sensor feedback, enabling the system to function independently in field conditions.
Solution Approach 2:
The system operates intermittently rather than continuously, with periodic combustion cycles triggered by methane accumulation in the rumen. This periodic operation reduces power consumption and simplifies the overall system design while maintaining effective methane conversion.
4Volume of moving object
If the apparatus is designed to be compact and self-contained, then portability and animal mounting are improved, but integrating all necessary components into a compact frame becomes difficult
Solution Approach 1:
The system uses a nested arrangement where the combustion chamber is positioned within or adjacent to the animal's body, and the thermal buffer reservoir is integrated into the combustion chamber structure. This nesting approach minimizes the overall footprint while accommodating all necessary components.
Solution Approach 2:
The apparatus is designed as a multi-functional integrated unit that combines methane capture, combustion conversion, thermal management, and monitoring functions in a single compact system. This universal design allows the same apparatus to be used across different animal sizes and types with appropriate scaling.
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
Reduces methane emissions by converting it into less harmful byproducts, ensuring safe operation and durability, adaptable to various agricultural settings with modular design and scalable for different animal sizes and environments.
Implementation Method 1
converting it into less harmful carbon dioxide and water vapor via controlled combustion
Implementation Method 2
This buffer might absorb peak heat from combustion, thereby moderating exhaust temperature
Implementation Method 3
The system may be powered by a photovoltaic panel coupled with a rechargeable battery
Implementation Method 4
an ignition system... triggering of a spark ignition
Data Source
AI summary
An apparatus and method are provided for reducing methane emissions from ruminant animals by combusting methane gas extracted from the rumen. The system comprises a conduit configured to transport methane from the animal's rumen to a combustion module mounted externally or implanted partially or fully in a subdorsal position. The combustion module includes a pressure-activated valve, air intake, ignition system, and combustion chamber enclosed by a heat-absorbing roof structure. A control unit monitors internal gas pressure and triggers a spark ignition circuit when combustion conditions are satisfied. An upward-facing camera inhibits ignition if flammable obstructions are detected above the module. A water-filled thermal buffer integrated into the chamber roof moderates exhaust temperature, reducing wildfire risk. Power is supplied by a solar panel and rechargeable battery. The system intermittently converts methane into carbon dioxide and water vapor, significantly mitigating the greenhouse gas impact of enteric fermentation in ruminant livestock.