Cogeneration system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cogeneration systems using landfill gas face challenges with combustion stability and output due to variable fuel composition and low supply pressure, and the integration of compressors via belts leads to noise, space occupancy, and imprecise compression ratio control.
Innovation Solution
A cogeneration system design incorporating a motor-type intake compressor with a gas supply unit that mixes air and gas before compression, allowing precise control and reducing the risk of mixed gas combustion, and featuring a single module configuration for the gas supply and intake compressor to minimize space and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a belt-connected compressor is used to enhance intake pressure, then engine output efficiency is improved, but noise increases and space occupancy increases
Solution Approach 1:
The patent replaces the belt-connected mechanical compressor system with an electrically-driven compressor system. This substitution eliminates the belt transmission mechanism that generates noise, while maintaining the compression function needed to enhance intake pressure and improve engine output efficiency.
2Productivity
If a belt-connected compressor is used to enhance intake pressure, then engine output efficiency is improved, but device complexity and space occupancy increase
Solution Approach 1:
The patent replaces the complex belt transmission mechanical system with a simpler electrically-driven compressor system. This substitution reduces the number of mechanical components (belts, pulleys, couplings) and simplifies the overall device structure while maintaining the necessary compression function for improved engine output.
3Productivity
If a belt-connected compressor is used to enhance intake pressure, then engine output efficiency is improved, but compression ratio control precision deteriorates
Solution Approach 1:
The patent replaces the mechanically-coupled compressor system with an electrically-driven system, enabling precise electronic control of the compressor operation. This allows for accurate compression ratio control through electrical parameters, improving upon the imprecise mechanical belt connection system.
4Adaptability or versatility
If gas is supplied separately from air in the intake system, then fuel supply flexibility is improved, but mixed gas leakage risk increases
Solution Approach 1:
The patent merges the gas supply unit with the air intake system to create an integrated mixed gas supply system. This integration ensures that gas and air are properly mixed within the controlled intake system, reducing the risk of mixed gas leakage while maintaining the flexibility of separate supply control through coordinated valve and pump operations.
5Productivity
If compression is performed after gas and air are mixed, then combustion efficiency is improved, but risk of combustion during compression increases
Solution Approach 1:
The patent uses an electrically-driven compressor with precise electronic control to manage the compression process. This allows for controlled compression of the mixed gas with precise timing and parameter control, achieving improved combustion efficiency while maintaining safety through electronic monitoring and control, as opposed to mechanical systems with less precise control.
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 design enhances engine stability and output efficiency while preventing mixed gas combustion and leakage, allowing for precise compression ratio control and improved fuel supply to the engine.
Implementation Method 1
a compressor impeller which is disposed in the intake pipe, and rotates by the motor to compress the mixed gas
Implementation Method 2
a spray unit which has a smaller cross-sectional area than the acceleration unit, and is provided with a spray hole connected to the gas intake pipe
Implementation Method 3
a gas supply unit for mixing the gas supplied from the gas intake pipe with air in the air intake pipe
Data Source
AI summary
A cogeneration system includes an intake pipe having one end which communicates with the outside air and having the other end which is connected to an engine; a mixer disposed in the intake pipe to supply gas into the intake pipe; and an intake compressor for compressing a mixed gas which is a mixture of the air and the gas, wherein the intake compressor includes: a motor disposed in the intake pipe; and a compressor impeller which is disposed in the intake pipe, and rotates by the motor to compress the mixed gas.