在下一代高温聚光太阳能热利用技术中，高温吸热颗粒需要通过换热器将热量与发电系统工质进行交换。流化床型颗粒换热器被认为是可满足上述换热过程的重要形式。然而，该类换热器中颗粒侧换热系数小于发电工质侧，因此准确预测流化床换热器中颗粒侧换热系数是换热器设计的重要性能指标之一。因此，本文对“水平列管流化床换热器中颗粒侧的传热系数研究”进行文献调研，并基于已有研究论文中提出的无量纲准则式计算方法，计算出清华大学能动系工程热物理研究所搭建的流化床换热器传热系数。本文第一部分，调研了已有论文中不同因素对传热系数的影响规律。首先解释了一些关于床层流化和气泡行为的一般知识；其次分析了流化床中单管和管束的传热系数，介绍了基于不同数值模拟方法获得的传热系数的准则关联式；最后，讨论了不同管束布置和翅片管对传热系数的影响。本文第二部分，采用无量纲准则式对清华大学能动系工程热物理研究所搭建的流化床换热器中颗粒侧传热系数进行了预测算。采用六种计算方法来估算四种不同床层温度下的换热系数，得到的结果与文献相符，并在合理的数值范围内。本研究为流化床型高温颗粒换热器的设计提供了研究基础。

Fluidized bed heat exchangers (FBHE) are used to utilize concentrated solar power (CSP) to operate thermal power cycles for electricity generation. When electricity is demanded, solid particles heated by solar becomes fluidized by gravity and directed to an FBHE connected to a thermal power cycle. One of the key performance indicators of the FBHE is the heat transfer coefficient (HTC). Hence, the aim of this mini thesis is to conduct a literature research on the HTC of this FBHE with horizontal aligned tubes and use dimensionless calculation method based approaches of various research papers to calculate the HTC for an FBHE setup at the Institute of Thermal Department of the Tsinghua University.In the first part of this study,, the influence of different factors on the HTC are investigated by literature research. Some general knowledge regarding the bed fluidization and bubble behavior is explained. The HTC in fluidized beds is discussed for single tubes and tube bundles. Different correlation based on numerical approaches to estimate the HTC are introduced. Also, experimental results and correlations to the HTC are presented. Finally, the influence of different tube arrangements in tube bundles and finned tubes on the HTC are discussed. In the second part of this study the calculation based on approach with dimensionless variables is used to estimate the heat transfer coefficient for the FBHE setup at the Thermal Department of the Tsinghua University. Therefor the presented correlations from various studies in the literature research are applied. Six calculations are deployed to estimate the HTC at four different bed temperatures. The results are within the same range and in accordance with literatures. This study provides a basis results for the future research of CSP FBHE in Tsinghua University