Experimental analysis of Closed Loop Two Phase Thermosyphon (CLTPT) for energy systems
Experimental analysis of Closed Loop Two Phase Thermosyphon (CLTPT) for energy systems
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DOI：
10.1016/j.expthermflusci.2013.08.013
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发表时间：
2013-11
影响因子：
3.2
通讯作者：
A. Franco;S. Filippeschi
中科院分区：
文献类型：
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作者：
A. Franco;S. Filippeschi
作者设计并实现了一个用于分析小尺寸闭环两相热虹吸管（CLTPT）的实验测试台，其中可以提供高达1.7 kW的热流量。实验测试装置由蒸发器和放置在蒸发器上方约1 m处的水冷式水平冷凝器组成。该装置的主要特点是存在三种不同的测量方式：连续模式，积分模式和间接模式。本分析的目的是研究质量流量和热流量之间的相关性。本文对以水和乙醇为工质的实验分析结果进行了讨论和分析，研究了热负荷、工作压力和充液量等参数对性能的影响。在热量和质量传输的限制，证明了在高热量输入的不稳定行为一起，从这项工作中，理解和有用的信息，设计和建造一个两相热虹吸系统，如太阳能加热。
The authors have designed and realized an experimental test rig for the analysis of Closed Loop Two Phase Thermosyphons (CLTPT) of small dimensions where heat flow rate up to 1.7 kW can be furnished. The experimental test rig consists of an evaporator and a water cooled horizontal condenser placed about 1 m over the evaporator. The main characteristic of this apparatus is the presence of three different ways of measuring the mass flow rate: a continuous mode, an integral mode and an indirect mode.The purpose of this analysis is to investigate the correlation between mass flow rate and heat flow rate. The results of an experimental analysis by using water and ethanol as tested fluids at different operating conditions are shown discussed and analyzed.The influence of several parameters on the performances was studied experimentally: in particular heat load, operating pressure and fluid filling. The limits in the heat and mass transport are evidenced together with the unstable behavior at the high heat input.From this work, understanding and useful information are provided for designing and building a two-phase thermosyphon for systems like solar heating.