Liquid-state pyroelectric energy harvesting

Bevione, Matteo; Garofalo, Erik; Cecchini, Luca; Chiolerio, Alessandro

doi:10.1557/mre.2020.39

Cited by 14 publications

(15 citation statements)

References 28 publications

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“…This thermomagnetic motion will allow the nanoparticles to crawl on the walls of the container, provoking charge accumulation by means of a triboelectric process, [ 81 ] and experience a temperature variation in time, provoking pyroelectrification. [ 82 ] The device has been tested only in the laboratory and still needs some improvements to be reproduced in a large scale. However, the results are encouraging and the possible applications are various as the device, until now, is proposed in two shapes, i.e., toroidal or planar, and can be applied on whatever hot surface.…”

Section: Industrial Applicationsmentioning

confidence: 99%

Waste Heat to Power: Technologies, Current Applications, and Future Potential

et al. 2020

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Energy consumption, environmental impact, and sustainability have risen fast through the ranks, achieving the first places in driving investments, policies, and concerns of all countries at any developmental stage. Energy transformation, though, must cope with nonunitary efficiency of devices and processes, which results in a distributed production of waste heat. A reduction of emissions, implying a conversion of waste heat to more noble forms of energy and a concurrent increase in efficiency of the same devices and processes, is of paramount importance. In view of the enthalpy content and distribution of the different sources of waste heat, low‐grade/low‐enthalpy sources below 200 °C are considered the most fertile field for research and development, with an impressive industrial growth rate. Thermodynamic cycles and thermal conversion devices based on the most relevant physical effects are herein introduced and briefly described, including both solutions that already achieved industrial maturity and less developed systems and devices whose study is still in progress. A specific focus on three application domains, selected due to their economic relevance, is done: industrial processes for the vast energy and capital availability, automotive sector for its permeation, and wearable devices for the market size. Limits and opportunities are critically discussed.

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Section: Industrial Applicationsmentioning

confidence: 99%

Waste Heat to Power: Technologies, Current Applications, and Future Potential

et al. 2020

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“…The main difference is represented by a multi-effect harvesting capability, intrinsic of heterogeneous colloids featuring a complex composition that can, for example, show both pyroelectricity and triboelectricity, whereas conventional solid-state devices are less flexible in this regard. [55] The aesthetic appearance of the future cybernetic systems could be more diverse in amorphous shapes, as it could be endowed with transformable features, from one amorphous shape to another specific shape under stimulus or selfreconfiguration. The stiffness of the whole system could also be designed tunable from extreme hardness to perform tough tasks, to fluidic softness.…”

Section: The Cogitor Conceptmentioning

confidence: 99%

“…The main difference is represented by a multi‐effect harvesting capability, intrinsic of heterogeneous colloids featuring a complex composition that can, for example, show both pyroelectricity and triboelectricity, whereas conventional solid‐state devices are less flexible in this regard. [ 55 ]…”

Section: Liquid Cybernetic Systemsmentioning

confidence: 99%

Liquid Cybernetic Systems: The Fourth‐Order Cybernetics

Chiolerio

2020

Advanced Intelligent Systems

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Technological development in robotics, computing architectures and devices, and information storage systems, in one single word: cybernetic systems, has progressed according to a jeopardized connection scheme, difficult if not impossible to track and picture in all its streams. Aim of this progress report is to critically introduce the most relevant limits and present a promising paradigm that might bring new momentum, offering features that naturally and elegantly overcome current challenges and introduce several other advantages: liquid cybernetic systems. The topic describing the four orders of cybernetic systems identified so far is introduced, evidencing the features of the fourth order that includes liquid systems. Then, current limitations to the development of conventional, von Neumann‐based cybernetic systems are briefly discussed: device integration, thermal design, data throughput, and energy consumption. In the following sections, liquid‐state machines are introduced, providing a computational paradigm (free from in materio considerations) that goes into the direction of solving such issues. Two original in materio implementation schemes are proposed: the COlloIdal demonsTratOR (COgITOR) autonomous robot, and a soft holonomic processor that is also proposed to realize an autolographic system.

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“…Liquid-state pyroelectric energy harvester has shown a notable ability to convert thermal gradient into electrical energy. [10] Among several technologies, the use of thermoelectric (TE) technology to convert waste heat directly into electricity has proven to be promising. The corresponding research activities have been focused on the development of TE materials which can offer higher energy conversion efficiency and wider operating temperature range of IC engines.…”

Section: Introductionmentioning

confidence: 99%

Heat Exchanger Assisted Exhaust Heat Recovery with Thermoelectric Generator in Heavy Vehicles

Hassan

Samanta

2021

Energy Tech

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The automobile industry is in a constant pursuit to improve the fuel economy of vehicles. The internal combustion engine is inefficient due to its inherent irreversibility. Around 30% of the combustion energy is lost in the form of heat with the exhaust gasses. If this lost energy is recovered and utilized, then it will improve the overall fuel economy of the vehicle. Herein, a waste heat recovery concept is presented to recover heat from exhaust gasses in a heavy commercial vehicle. Two exhaust gas heat exchangers are conceptualized and their performances are compared. A novel idea of immersing thermoelectric modules in coolant is proposed instead of using a separate cooling block or channel. The thermal performance is evaluated considering transformer oil as coolant instead of commonly used engine coolant. The performance of two heat exchangers one having a parallel flat plate fin core and the other having a pin fin core configuration is investigated. The effect of coolant volume flow rate and exhaust gas mass flow rate also is analyzed.

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Liquid-state pyroelectric energy harvesting

Abstract: Abstract

Cited by 14 publications

References 28 publications

Waste Heat to Power: Technologies, Current Applications, and Future Potential

Waste Heat to Power: Technologies, Current Applications, and Future Potential

Liquid Cybernetic Systems: The Fourth‐Order Cybernetics

Heat Exchanger Assisted Exhaust Heat Recovery with Thermoelectric Generator in Heavy Vehicles

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