Mobile Structure Layout for Wind Turbine Noise Attenuation
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Solution Overview
Problem
Cogging sounds from wind turbine generators propagate into the interior of movable structures, such as containers, compromising livability and usability for living, office duties, medical services, and other activities.
Innovation Solution
A mobile structure with a wind turbine generator and power supply mechanism, featuring a storage that houses the power supply mechanism facing the inner surface of the peripheral wall on which the generator is supported, and a partition wall that attenuates noise, along with a photovoltaic generator that can be supported in a recessed part of the peripheral wall to reduce overall width, allowing transportability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wind turbine generator is attached to a movable structure such as a container, then the structure can generate power at locations without grid access, but cogging sounds from the generator propagate to the interior space, causing noise that deteriorates livability
Solution Approach 1:
A partition wall is introduced as an intermediary element between the wind turbine generator and the interior living space. This partition wall acts as a noise barrier that blocks the propagation of cogging sounds from the generator while allowing the generator to remain externally mounted on the container for power generation.
Solution Approach 2:
The partition wall is integrated within the container structure, nesting the noise isolation function within the existing structural framework. The partition wall is positioned inside the container to create an acoustic barrier without adding external bulk to the movable structure.
2Adaptability or versatility
If a photovoltaic generator is added to the structure, then power generation capability is enhanced, but the overall width of the structure increases, reducing transportability
Solution Approach 1:
The photovoltaic generator is installed on the vertical outer surface of the container rather than on the horizontal top surface. This dimensional change allows the solar panels to be mounted on the side of the container, utilizing the vertical dimension for power generation without increasing the horizontal width that would affect transportability through narrow passages.
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 structure effectively suppresses noise from the wind turbine generator, enabling use in non-electrified areas and ensuring quiet operation within the structure, while maintaining transportability and flexibility in power generation using both wind and solar power.
Implementation Method 1
a wind turbine generator supported on an end portion of a top wall of the structure in a longitudinal direction of the structure; and a power supply mechanism configured to supply power generated by the wind turbine generator to electrical equipment provided to the structure
Implementation Method 2
The mobile structure includes a photovoltaic generator provided to the structure, and the power supply mechanism is configured to supply power generated by the photovoltaic generator to the electrical equipment
Implementation Method 3
the storage which houses the power supply mechanism faces the inner surface of the peripheral wall on which the wind turbine generator is supported. In addition, the partition wall that partitions the storage from the space is provided inside the structure. Thus, the storage and the partition wall can attenuate noise including cogging sounds of the generator of the wind turbine generator
Data Source
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Figure 5~6
AI summary
Provided is a mobile structure that can be used even in non-electrified areas or the like and can suppress noise in a desired space inside the structure. The mobile structure includes: a structure (4) having a box-like shape, the structure being movable and having a space (S1) inside for at least one of living, office duties, work, rest, business, and medical services; a wind turbine generator (30) supported on the structure (4); and a power supply mechanism (2) configured to supply power generated by the wind turbine generator (30) to electrical equipment (53) provided to the structure (4). The structure (4) has a storage (M) inside, the storage housing the power supply mechanism (2). The storage (M) faces an inner surface of the peripheral wall (13) of the structure (4) on which the wind turbine generator (30) is supported. In addition, the structure (4) includes a partition wall (51) inside, the partition wall partitioning the storage (M) from the space (S1).