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Zhijia Yang

Bio: Zhijia Yang is an academic researcher from Loughborough University. The author has contributed to research in topics: Diesel engine & Thermoelectric generator. The author has an hindex of 9, co-authored 34 publications receiving 336 citations. Previous affiliations of Zhijia Yang include Munich University of Applied Sciences & Zhejiang University.

Papers
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TL;DR: In this article, the authors developed a dynamic model of TEG system designed for vehicle waste heat recovery, which is made up of counter-flow heat exchangers (HXRs) and commercial thermoelectric modules (TEMs).

137 citations

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TL;DR: In this article, the authors demonstrate that a modeling process that makes use of mainstream computational fluid dynamics (CFD) codes is feasible for the TEG design and demonstrate that it can be implemented in an engine test bed.

46 citations

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TL;DR: A new approach for predicting the fuel saving potential of a vehicular TEG while also considering integration effects is developed, based on a recently developed high temperature skutterudite thermoelectric modules.

39 citations

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TL;DR: The paper shows that a Pareto-optimal set or a trade-off curve in the performance space can be used for process controllability analysis, and therefore, can be applied to control structure selection problems.

25 citations

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TL;DR: In this article, a framework for characterisation, control, and energy management for an electrified turbocharged diesel engine is proposed, where an electric machine is mounted on the turbine shaft and changes the air system dynamics, so characterisation of the new layout is essential.

21 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors focus on major novel strategies to achieve high-performance thermoelectric (TE) materials and their applications, and present a review of these strategies.
Abstract: Thermoelectric (TE) materials have the capability of converting heat into electricity, which can improve fuel efficiency, as well as providing robust alternative energy supply in multiple applications by collecting wasted heat, and therefore, assisting in finding new energy solutions. In order to construct high performance TE devices, superior TE materials have to be targeted via various strategies. The development of high performance TE devices can broaden the market of TE application and eventually boost the enthusiasm of TE material research. This review focuses on major novel strategies to achieve high-performance TE materials and their applications. Manipulating the carrier concentration and band structures of materials are effective in optimizing the electrical transport properties, while nanostructure engineering and defect engineering can greatly reduce the thermal conductivity approaching the amorphous limit. Currently, TE devices are utilized to generate power in remote missions, solar-thermal systems, implantable or/wearable devices, the automotive industry, and many other fields; they are also serving as temperature sensors and controllers or even gas sensors. The future tendency is to synergistically optimize and integrate all the effective factors to further improve the TE performance, so that highly efficient TE materials and devices can be more beneficial to daily lives.

563 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the recent advances in the nanofluids' applications in solar energy systems, i.e., solar collectors, photovoltaic/thermal (PV/T) systems, solar thermoelectric devices, solar water heaters, solar-geothermal combined cooling heating and power system (CCHP), evaporative cooling for greenhouses, and water desalination.
Abstract: Solar energy systems (SESs) are considered as one of the most important alternatives to conventional fossil fuels, due to its ability to convert solar energy directly into heat and electricity without any negative environmental impact such as greenhouse gas emissions. Utilizing nanofluid as a potential heat transfer fluid with superior thermophysical properties is an effective method to enhance the thermal performance of solar energy systems. The purpose of this review paper is the investigation of the recent advances in the nanofluids’ applications in solar energy systems, i.e., solar collectors (SCs), photovoltaic/thermal (PV/T) systems, solar thermoelectric devices, solar water heaters, solar-geothermal combined cooling heating and power system (CCHP), evaporative cooling for greenhouses, and water desalination.

326 citations

Journal ArticleDOI
01 Nov 2019-Energy
TL;DR: The principles of thermoelectricity are described and an explanation of current and upcoming materials are presented and developed models and various performed optimization of thermOElectric applications by using non-equilibrium thermodynamics and finite time thermodynamics are discussed.

293 citations

Journal ArticleDOI
TL;DR: In this paper, the authors provide an up-to-date comparison and evaluation of a recent progress in the field of thermoelectricity, resulting primarily from multidisciplinary optimization of materials, topologies and controlling circuitry.

205 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present the science and technology that underpins thermoelectric generators (TEGs) and outline the key challenges associated with the development of new materials and devices that offer higher power output, while matching TE solutions to the wide range of applications that would benefit from energy harvesting.
Abstract: All machines from jet engines to microprocessors generate heat, as do manufacturing processes ranging from steel to food production. Thermoelectric generators (TEGs) are solid-state devices able to convert the resulting heat flux directly into electrical power. TEGs therefore have the potential to offer a simple, compact route to power generation in almost every industrial sector. Here, in a Roadmap developed with wide-ranging contributions from the UK Thermoelectric Network and international partners, we present the science and technology that underpins TEGs. We outline how thermoelectric (TE) technology capable of generating power outputs from microwatts to tens/hundreds kW, and potentially to MW, can have an impact across a wide range of applications in powering devices, ranging from medical to building monitoring, the internet of things, transportation and industrial sectors. The complementary application of TE technology in cooling affords additional opportunities in refrigeration and thermal management. Improved waste-heat harvesting and recovery and more efficient cooling offer significant opportunities to reduce energy usage and CO2 emissions. We provide an overview of the key challenges associated with the development of new materials and devices that offer higher power output, while matching TE solutions to the wide range of applications that would benefit from energy harvesting. There is an existing supply chain to develop, manufacture and integrate thermoelectric devices into a broad range of end-user sectors all with global market potential: the full realisation of which will require new state-of-the-art manufacturing techniques to be embraced in order to drive down costs through high-volume manufacturing to widen the application base.

154 citations