دانلود رایگان مقاله لاتین مدل سازی تولید برق از سایت الزویر
عنوان فارسی مقاله:
مدل سازی تولید برق برای ماشین های برداشت انرژی ترموالکتریک پوشیدنی با محدودیت های عملی
عنوان انگلیسی مقاله:
Power generation modeling for a wearable thermoelectric energy harvester with practical limitations
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Thermoelectric energy harvesters have the potential to free people from frequent charging and battery replacement of portable devices through their incorporation into wearable device applications. Thermoelectric generators convert waste heat from the human body into electrical energy without being interrupted via the Seebeck effect, which produces an electrical potential proportional to a temperature difference [1]. Unfortunately, the application of thermoelectric devices is often not practical or feasible due to their low voltage and power production, as well as their limited heat dissipation capability. The performance of thermoelectric devices depends on three material properties: thermal conductivity, the Seebeck coefficient, and electrical resistivity. Many research efforts focus on improving these properties through nano-structuring or band gap engineering [2,3]. However, system level optimization has not yet been explored as extensively as the material properties and many practical issues have been overlooked. Three main aspects have been ignored in designing an energy harvesting system with thermoelectric generators: limited heat dissipation from the cold side of the module, low system output voltage, and the limited practical size of the system. Another general practice in designing a thermoelectric power generator, which should be avoided, is the use of the traditional method for evaluating the maximum power generation, as it assumes an infinite amount of heat dissipation from the cold side. This implies that the cold side temperature is equal to the temperature of the ambient air around it [4,5], which leads to an overestimation of power production. In reality, a finite thermal resistance exists between the thermoelectric module and the ambient, causing the actual temperature drop to be much larger than the value predicted by the traditional approach. Moreover, internal heat generation by Joule heating and the Peltier effect, which cause further change in temperature difference across thermoelectric materials, is often neglected in the load matching condition when utilizing the traditional approach [6]. In using energy conservation equations, the module’s cold side thermal resistance and internal heat generations must be taken into account [7
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کلمات کلیدی:
Human Body Heat for Powering Wearable Devices: From Thermal ... www.tik.ee.ethz.ch/file/4a5cbebfd74e73215d7c4a8a45d05e67/TSMHB2017.pdf by M Thielena - Cited by 3 - Related articles Nov 22, 2016 - Keywords: Energy Harvesting, TEG, Wearable, DC-DC Conversion. 1. .... Thermoelectric energy conversion of human body heat represents a promis- ..... model as proposed in literature [12] and shown in Figure 1-Thermal. [PDF]A Shoe-Embedded Piezoelectric Energy Harvester for Wearable ... www.mdpi.com/1424-8220/14/7/12497/pdf by J Zhao - 2014 - Cited by 43 - Related articles Jul 11, 2014 - applying piezoelectric energy harvesters to power wearable sensors. ..... and the lower plate are made of silicone rubber (by injecting modeling. Models for 31-Mode PVDF Energy Harvester for Wearable Applications https://www.hindawi.com/journals/tswj/2014/893496/ by J Zhao - 2014 - Cited by 6 - Related articles Jun 20, 2014 - Lead zirconate titanate (PZT) and PVDF are two common functional materials for piezoelectric energy harvesters. Compared with rigid, brittle, ... Designing thermoelectric generators for self-powered wearable ... pubs.rsc.org/-/content/articlehtml/2016/ee/c6ee00456c by F Suarez - 2016 - Cited by 15 - Related articles Apr 14, 2016 - Finally, the model was used to design a custom TEG with improved ... the wearable devices have the opportunity to not only harvest energy for ... Innovative Materials and Systems for Energy Harvesting Applications https://books.google.com/books?isbn=1466682558 Mescia, Luciano - 2015 - Technology & Engineering Variable-shaped piezoelectric energy harvesters and piezomagnetoelastic energy ... In particular, linear and nonlinear electromechanical models are developed ... 11 describes a work on wearable energy harvesters for wearable applications. Searches related to modeling for a wearable thermoelectric energy harvester energy harvesting wearable devices wearable electronics self-powered by using human body heat: the state of the art and the perspective wearable thermoelectric generators for human body heat harvesting generate electricity from body heat body heat powered phone charger energy harvesting methods thermopile teg
