关于泵驱动二氧化碳两相热虹吸环路的实验研究

IF 6.1 2区 工程技术 Q2 ENERGY & FUELS
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引用次数: 0

摘要

为了更好地理解液泵驱动两相热虹吸环路(LPTPTL)的内部运行原理,促进环保工作流体的应用,我们通过实验研究了以二氧化碳为工作流体的 LPTPTL。实验研究了二氧化碳 LPTPTL 的运行机制和性能。研究发现,在不同的运行阶段,泵对两相热泵回路(TPTL)的影响有很大不同。在振荡运行阶段,启动液泵可消除回路中的喷泉沸腾,使 TPTL 从振荡运行过渡到稳定运行。在正常运行阶段,泵功率对 TPTL 的总热阻影响不大。而系统的 EER(能效比)则随着泵功率的增加而明显下降。在过载运行阶段,启动液泵有助于缓解回路中的过热或过冷现象。随着泵功率从 3.0 W 增至 18.8 W,TPTL 的传热极限从 1800 W 增至 3300 W,而系统的能效比从 600 降至 176。这项研究证明了 CO2 LPTPTL 的可行性,并为其实际应用提供了理论指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study on a pump-driven CO2 two-phase thermosyphon loop

In order to better understanding the internal operating principles of liquid pump-driven two-phase thermosyphon loop (LPTPTL) and promote the application of environmentally friendly working fluids, a LPTPTL using CO2 as the working fluid was studied through experiment. Both the operating mechanisms and performance of the CO2 LPTPTL was investigated. It was found that the impact of the pump on the two-phase thermosyphon loop (TPTL) varies significantly across different operation stages. During the oscillatory operation stage, activating the liquid pump eliminated the geyser boiling in the loop and made the TPTL to transition from oscillatory to stable operation. During the normal operation stage, the pump power had little effect on the total thermal resistance of the TPTL. While the system’s EER (Energy Efficiency Ratio) significantly decreased with the increasing pump power. During the overload operation stage, activating the liquid pump helped alleviate overheating or subcooling in the loop. With the pump power increasing from 3.0 W to 18.8 W, the heat transfer limit of the TPTL increased from 1800 W to 3300 W, while the system’s EER decreased from 600 to 176. This study proves the feasibility of CO2 LPTPTL, and provides theoretical guidance for its real application.

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来源期刊
Applied Thermal Engineering
Applied Thermal Engineering 工程技术-工程:机械
CiteScore
11.30
自引率
15.60%
发文量
1474
审稿时长
57 days
期刊介绍: Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.
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