...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Renewable energy >Carbon nanotube nanofluid in enhancing the efficiency of evacuated tube solar collector
【24h】

Carbon nanotube nanofluid in enhancing the efficiency of evacuated tube solar collector

机译：碳纳米管纳米流体提高真空管太阳能集热器的效率

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

The use of solar thermal collectors is one of the promising options for heating and/or cooling due to the green nature (pollution free) and abundance of the solar energy in many parts of the world. Improvement of thermal performance of solar collectors is important for better energy conversion. In this regard, many studies reported in literature tried to modify geometry of the collectors. On the other hand, nanofluids as heat transfer fluids could be a promising option for the efficiency enhancement of solar collectors. In this study, heating performance of an evacuated tube solar collector system initially operated with water is considered for improvement using nanofluid. The collector (about 20 kW heating capacity) is a part of an absorption cooling system. The aim of the present study is to analyze the effect of Single Walled Carbon Nanotube water nanofluid on the collector performance. Thermal efficiency improvement is assessed based on comparative analyses between collector working with ordinary water and that with nanofluid. The results indicate that up to 56.7% and 66% of efficiencies are observed when the collector is operated with water and 0.2 vol% nanofluid, respectively. Therefore, nanofluids are promising to enhance the efficiencies of solar collectors. (C) 2018 Elsevier Ltd. All rights reserved.
机译：由于世界上许多地方的绿色自然（无污染）和丰富的太阳能，太阳能集热器的使用是加热和/或冷却的有前途的选择之一。太阳能集热器的热性能的改善对于更好的能量转换很重要。在这方面，文献报道的许多研究试图改变收集器的几何形状。另一方面，作为传热​​流体的纳米流体可能是提高太阳能收集器效率的有前途的选择。在这项研究中，考虑使用纳米流体来改善最初用水运行的真空管太阳能集热器系统的加热性能。集热器（约20 kW的加热能力）是吸收式冷却系统的一部分。本研究的目的是分析单壁碳纳米管水纳米流体对收集器性能的影响。基于使用普通水的集热器和使用纳米流体的集热器之间的比较分析，评估了热效率的提高。结果表明，当收集器分别用水和0.2％（体积）的纳米流体运行时，观察到的效率分别高达56.7％和66％。因此，纳米流体有望提高太阳能收集器的效率。 （C）2018 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