Performance enhancement of a piezoelectric rain energy harvester

Ong, Z.G.; Wong, Voon‐Kean; Ho, Jee-Hou

doi:10.1016/j.sna.2016.10.035

Cited by 24 publications

(19 citation statements)

References 19 publications

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“…422,423 Over recent years, there has been a handful of groups reported and studied the rainfall energy harvesters using piezoelectric materials by the impact of raindrops, but the potential has not been fully realized. [424][425][426][427][428][429] The traffic-induced roadway loading can also be a potential clean and reliable energy source. In the United States, the total energy wasted annually by the motor vehicles on tires is estimated to be about 2.218 Â 10 16 kJ.…”

Section: Future Application Outlooksmentioning

confidence: 99%

A comprehensive review on piezoelectric energy harvesting technology: Materials, mechanisms, and applications

Liu

Zhong

Lee

et al. 2018

Applied Physics Reviews

654

314

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The last decade has witnessed significant advances in energy harvesting technologies as a possible alternative to provide a continuous power supply for small, low-power devices in applications, such as wireless sensing, data transmission, actuation, and medical implants. Piezoelectric energy harvesting (PEH) has been a salient topic in the literature and has attracted widespread attention from researchers due to its advantages of simple architecture, high power density, and good scalability. This paper presents a comprehensive review on the state-of-the-art of piezoelectric energy harvesting. Various key aspects to improve the overall performance of a PEH device are discussed, including basic fundamentals and configurations, materials and fabrication, performance enhancement mechanisms, applications, and future outlooks.

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Section: Future Application Outlooksmentioning

confidence: 99%

A comprehensive review on piezoelectric energy harvesting technology: Materials, mechanisms, and applications

Liu

Zhong

Lee

et al. 2018

Applied Physics Reviews

654

314

View full text Add to dashboard Cite

show abstract

“…The work W performed by the rainwater on the shaft becomes negative, which denotes that it is difficult to overturn the buffer. When hg is less than 0.06 m, the work W performed by the rainwater on the shaft is significantly greater than zero according to Equation (14). The container will be overturned before it is full in this situation.…”

Section: Function Analysis Of the Passive Rainwater Buffermentioning

confidence: 99%

“…The height hg of the shaft significantly affects the flipping state of the container. When hg is greater than 0.06 m, the work W performed by the rainwater on the shaft is less than zero according to Equation (14). The container will not be inclined even if it is full under this condition.…”

Section: Function Analysis Of the Passive Rainwater Buffermentioning

confidence: 99%

“…The most common method utilises the ambient vibration energy induced by direct impact of raindrops, which is converted into electrical energy through the piezoelectricity of piezoelectric materials. [14][15][16] Several researchers have already studied this type of the rain energy harvester. 17 Jellard et al 18 investigated the key parameters which affect energy transfer efficiency between the incident water droplets and piezoelectric cantilever structures made of stainless steel foil coated with piezoelectric polyvinylidene fluoride trifluoroethylene.…”

Section: Introductionmentioning

confidence: 99%

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Small‐scale experimental study on the optimisation of a rooftop rainwater energy harvester using electromagnetic generators in light rains

Bao

Wang

2020

Int J Energy Res

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This research proposes a new rooftop rainwater energy harvester using electromagnetic generators, which demonstrates better rain-energy harvesting performance than the traditional rainwater energy harvesters that use electromagnetic generators under light rain conditions. Conventionally, the rainwater collected from the roof of a building or a residential attic using the installed roof gutter system is drained directly along a pipe to drive water turbines combined with electromagnetic generators for generating electricity. Such an energy harvesting method has high energy harvesting efficiency under heavy rain conditions but is inefficient under light rain conditions. To improve the energy harvesting efficiency in light rains, a pipe-connected tank including a passive rainwater buffer is introduced and fixed below the rooftop gutters in the proposed structure. The passive rainwater buffer is attached above the pipe-connected tank. After collecting a certain amount of rainwater from the gutters, the passive rainwater buffer automatically releases the rainwater periodically into the pipe-connected tanks. The released rainwater results in a large flow along the pipe, which can drive water turbines with electromagnetic generators to work at a high efficiency for a short period of time. A small-scale experimental prototype was built for validating the energy harvesting performance of the proposed structure. The results show that the intermittent highefficiency power generation of the proposed structure is better than the continuous low-efficiency power generation of the traditional structure during light rains. The proposed structure can charge a 680 μF capacitor with at least nine times the electrical energy that is stored in a conventional capacitor for a rainwater flow rate of less than 300 mL/min in the same amount of time. However, with the increase in the rainwater flow, the energy harvesting performance gap between the proposed structure and the traditional one gradually narrows.

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“…During recent years, particular attention has been given to the possibility of harvest energy from the raindrops by researchers from the region of Malaysia [16][17][18][19][20] and Bangladesh [21].…”

Section: Introductionmentioning

confidence: 99%

Comparison Among Different Rainfall Energy Harvesting Structures

Viola

2018

Applied Sciences

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Featured Application: With a view to reducing the employment of battery-powered systems to meet environmental requirements, sensors should be powered by energy harvesting systems. Sensors require little energy to perform measurements and also to transmit data; energy that can be recovered from rainwater by the harvesting structures.Abstract: In this paper, an experimental comparison between different rainfall harvesting devices through the study of the electrical rectifying circuit is proposed. In more detail, three harvesting structures are considered: the cantilever, the bridge and the floating circle. Different waveforms were acquired and discussed. The processed data were compared in order to suggest the best choice for the rectifying circuit, from the simplest one to that most frequently endorsed in the technical literature.

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Performance enhancement of a piezoelectric rain energy harvester

Cited by 24 publications

References 19 publications

A comprehensive review on piezoelectric energy harvesting technology: Materials, mechanisms, and applications

A comprehensive review on piezoelectric energy harvesting technology: Materials, mechanisms, and applications

Small‐scale experimental study on the optimisation of a rooftop rainwater energy harvester using electromagnetic generators in light rains

Comparison Among Different Rainfall Energy Harvesting Structures

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