• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >High-temperature and high-power-density nanostructured thermoelectric generator for automotive waste heat recovery
【24h】

High-temperature and high-power-density nanostructured thermoelectric generator for automotive waste heat recovery

机译：用于汽车废热回收的高温高功率密度纳米结构热电发电机

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Given increasing energy use as well as decreasing fossil fuel sources worldwide, it is no surprise that interest in promoting energy efficiency through waste heat recovery is also increasing. Thermoelectric generators (TEGs) are one of the most promising pathways for waste heat recovery. Despite recent thermoelectric efficiency improvement in nanostructured materials, a variety of challenges have nevertheless resulted in few demonstrations of these materials for large-scale waste heat recovery. Here we demonstrate a high-performance TEG by combining high-efficiency nanostructured bulk materials with a novel direct metal brazing process to increase the device operating temperature. A unicouple device generates a high power density of 5.26 W cm(-2) with a 500 degrees C temperature difference between hot and cold sides. A 1 kW TEG system is experimentally demonstrated by recovering the exhaust waste heat from an automotive diesel engine. The TEG system operated with a 2.1% heat-to-electricity efficiency under the average temperature difference of 339 degrees C between the TEG hot- and cold-side surfaces at a 550 degrees C exhaust temperature. The high-performance TEG reported here open up opportunities to use TEGs for energy harvesting and power generation applications. (C) 2015 Elsevier Ltd. All rights reserved.
机译：鉴于全球范围内能源使用量的增加以及化石燃料源的减少，通过废热回收提高能源效率的兴趣也在增加。热电发电机（TEG）是废热回收的最有希望的途径之一。尽管最近在纳米结构材料中提高了热电效率，但是各种挑战仍然导致这些材料用于大规模废热回收的示范很少。在这里，我们通过将高效的纳米结构体材料与新颖的直接金属钎焊工艺相结合以提高器件工作温度，展示了一种高性能的TEG。单耦合器件产生的热功率为冷端之间的温差为500摄氏度时，功率密度为5.26 W cm（-2）。通过回收汽车柴油机的废热，实验证明了1 kW TEG系统。在550°C排气温度下，TEG热侧和冷侧表面之间的平均温度差为339°C时，TEG系统以2.1％的热电效率运行。此处报道的高性能TEG为将TEG用于能量收集和发电应用打开了机会。 （C）2015 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号