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Development of a Concentrating Solar Water Heater with Phase Change Energy Storage.

机译：具有相变储能的集中式太阳能热水器的开发。

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摘要

The complicated, unpredictable, and often chaotic hot water usage pattern of typical households severely limits the effectiveness and efficiency of traditional solar hot water heater systems. Similar to large scale concentrating solar power plants, the use of thermal energy storage techniques to store collected solar energy as latent heat has the potential to improve the efficiency of solar hot water systems. Rather than being used to produce steam to generate electricity, the stored thermal energy would be used to heat water on-demand well after the sun sets. The scope of this thesis was to design, analyze, build, and test a proof of concept prototype for an on-demand solar water heater for residential use with latent heat thermal energy storage. The proof of concept system will be used for future research and can be quickly reconfigured making it ideal for use as a test bed. This thesis outlines the analysis, design, and testing processes used to model, build, and evaluate the performance of the prototype system.;The prototype system developed to complete this thesis was designed using systems engineering principles and consists of several main subsystems. These subsystems include a parabolic trough concentrating solar collector, a phase change material reservoir including heat exchangers, a heat transfer fluid reservoir, and a plumbing system. The system functions by absorbing solar thermal energy in a heat transfer fluid using the solar collector and transferring the absorbed thermal energy to the phase change material for storage. The system was analyzed using a mathematical model created in MATLAB and experimental testing was used to verify that the system functioned as designed. The mathematical model was designed to be adaptable for evaluating different system configurations for future research. The results of the analysis as well as the experimental tests conducted, verify that the proof of concept system is functional and capable of producing hot water using stored thermal energy. This will allow the system to function as a test bed for future research and long-term performance testing to evaluate changes in the performance of the phase change material over time. With additional refinement the prototype system has the potential to be developed into a commercially viable product for use in residential homes.
机译：典型家庭的复杂，不可预测且经常混乱的热水使用模式严重限制了传统太阳能热水系统的有效性和效率。类似于大型集中式太阳能发电厂，使用热能存储技术来存储收集的太阳能作为潜热，有可能提高太阳能热水系统的效率。所存储的热能将被用来在太阳落山后按需很好地加热水，而不是用来产生蒸汽来发电。本文的范围是设计，分析，构建和测试带有潜热热能存储的住宅用按需太阳能热水器的概念证明原型。概念验证系统将用于将来的研究，并且可以快速重新配置，使其非常适合用作测试平台。本文概述了用于建模，构建和评估原型系统性能的分析，设计和测试过程。;为完成本论文而开发的原型系统是使用系统工程原理设计的，并且由几个主要子系统组成。这些子系统包括一个抛物槽式聚光太阳能收集器，一个包括热交换器的相变材料储存器，一个传热流体储存器和一个管道系统。该系统通过使用太阳能收集器吸收传热流体中的太阳热能并将吸收的热能传递给相变材料进行存储来运行。使用在MATLAB中创建的数学模型对系统进行了分析，并通过实验测试来验证系统是否按设计工作。该数学模型旨在适应于评估不同的系统配置，以供将来研究。分析的结果以及进行的实验测试，验证了概念证明系统是有效的并且能够利用存储的热能产生热水。这将使该系统可以用作将来的研究和长期性能测试的试验台，以评估相变材料性能随时间的变化。通过进一步完善，原型系统有可能被开发成可用于住宅的商业上可行的产品。

著录项

  • 作者

    Petre, Andrew.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Mechanical engineering.;Alternative Energy.
  • 学位 M.S.
  • 年度 2015
  • 页码 159 p.
  • 总页数 159
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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