• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Equipment and Systems >Optimization of the PCM-integrated solar domestic hot water system under different thermal stratification conditions
【24h】

Optimization of the PCM-integrated solar domestic hot water system under different thermal stratification conditions

机译：不同热分层条件下PCM集成太阳能家用热水系统的优化

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Many researchers have investigated how to increase the overall efficiency of solar-driven thermal systems. Several key parameters, such as collector efficiency and storage tank characteristics, may impose some constraints on the annual solar fraction (ASF) of such systems. In this paper, the behaviour of integrating the phase change material (PCM) in SDHW systems is modelled and optimized numerically. Coupled collector and partly stratified PCM-embedded storage tank governing equations are utilized to simulate the overall performance of the system. The developed code presents the monthly behaviour of the system including the solar fraction and the storage tank temperature profile. The results indicate that the stratification of the storage tank will increase the ASF up to about 4.6%. Additionally, it is found that the optimum amount for the PCM and its melting temperature is changed as the tank stratification goes from the fully mixed to the fully stratified state. Integrating the PCM in the storage tank leads to increases of 5.3% in the ASF for a single-node tank, while a rise of only 0.7% is seen for the stratified storage tank.
机译：许多研究人员研究了如何提高太阳能驱动热系统的整体效率。几个关键参数（例如收集器效率和储罐特性）可能会对此类系统的年太阳辐射量（ASF）产生一些限制。本文对SDHW系统中相变材料（PCM）的集成行为进行了建模和数值优化。利用耦合的集热器和部分分层的PCM嵌入式储罐控制方程来模拟系统的整体性能。制定的代码介绍了系统的每月行为，包括太阳能含量和储罐温度曲线。结果表明，储油罐的分层将使ASF增加到大约4.6％。另外，发现随着罐的分层从完全混合状态变为完全分层状态，用于PCM及其熔化温度的最佳量改变了。将PCM集成到储罐中会使单节点储罐的ASF增加5.3％，而分层储罐仅增加0.7％。

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