Containerized Generator Exhaust Duct Design
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Solution Overview
Problem
Containerized generator sets face challenges in maximizing generator size within standard container dimensions to enhance power output while minimizing noise impact on nearby areas, particularly in terms of efficient exhaust air management.
Innovation Solution
A containerized generator set design featuring pivotable doors and a removable wall to form an upwardly open exhaust air duct with a sound absorbent material, allowing cooling air to be discharged vertically and reducing noise attenuation without the need for internal sound chambers, thus enabling a larger generator to be housed within a standard container size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the generator size is increased to maximize power output within standard container dimensions, then the power output is improved, but the noise impact on nearby areas worsens
Solution Approach 1:
The exhaust air duct directs cooling air vertically upward instead of horizontally outward, changing the noise propagation direction from ground level to airborne discharge. This dimensional change allows the generator to operate at higher power levels while directing noise away from nearby buildings and pedestrian areas.
2Object-affected harmful factors
If an anechoic chamber is used to reduce noise from exhaust air, then the noise impact is reduced, but the device complexity and space requirements increase
Solution Approach 1:
The noise reduction function is extracted from the container interior by directing exhaust air through an external upwardly open duct. This removes the need for complex internal anechoic chambers while achieving the same noise attenuation goal through external vertical discharge.
Solution Approach 2:
Instead of using internal sound-absorbing structures, the solution directs exhaust air vertically upward outside the container, utilizing the external three-dimensional space to achieve noise reduction without adding internal complexity.
3Strength
If the exhaust air duct is made fixed and integrated into the container structure, then the structural strength is improved, but the ease of manufacture and assembly worsens
Solution Approach 1:
The exhaust air duct is segmented into separate components that can be independently manufactured and then assembled to the container. This allows each component to be optimized for manufacturing while maintaining overall structural integrity through proper connection design.
Solution Approach 2:
The exhaust air duct is designed with movable or adjustable elements that allow for easier assembly and installation, while still providing sufficient structural strength when in the operational position. This dynamic design approach balances manufacturing ease with structural requirements.
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 configuration allows for increased generator size within standard containers while effectively reducing noise impact on surrounding environments, enabling more powerful and quieter operation near buildings and pedestrian areas.
Implementation Method 1
an upwardly open exhaust air duct with a sound absorbent material
Data Source
AI summary
A containerised generator set comprises a generator arranged within a container having a first aperture through which cooling air is exhausted in use. A pair of first doors are arranged to pivot outwardly on either side of the first aperture, with a removable wall being removably mounted between the first doors and spaced apart from the body of the container by the first doors from its lower end region to its tipper end region in its mounted position. The removable wall and the first doors define an exhaust air duct which preferably includes a sound absorbent material. The exhaust air duct extends for at least most of a total height of the body of the container to attenuate noise from the generator. Exhausted cooling air flows upwardly from the open upper end of the exhaust air duct and away from the immediate operating environment.