Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis

In the geyser boiling mode, the working fluid state is divided into a boiling process and a quiet process, and the sodium-potassium (Na-K) alloy heat pipe can discontinuously transfer heat at each boiling. The overheating of the liquid working fluid at the bottom causes short-term boiling and forms...

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Autores principales:	Hongzhe Zhang, Fang Ye, Hang Guo, Xiaoke Yan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sodium-potassium alloy geyser boiling forced convection cooling start-up performance heat transfer performance Technology T
Acceso en línea:	https://doaj.org/article/b54930410425435282f96d193f261b5f
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id	oai:doaj.org-article:b54930410425435282f96d193f261b5f
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spelling	oai:doaj.org-article:b54930410425435282f96d193f261b5f2021-11-25T17:26:55ZSodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis10.3390/en142275821996-1073https://doaj.org/article/b54930410425435282f96d193f261b5f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7582https://doaj.org/toc/1996-1073In the geyser boiling mode, the working fluid state is divided into a boiling process and a quiet process, and the sodium-potassium (Na-K) alloy heat pipe can discontinuously transfer heat at each boiling. The overheating of the liquid working fluid at the bottom causes short-term boiling and forms slug bubble, the strong condensing ability quickly conducts heat from the evaporator section. And geyser boiling can occur before the working fluid forms continuous flow, so it transfers more heat at lower temperatures than natural convection cooling. In this study, the heat transfer process of a Na-K alloy heat pipe with forced convection cooling under different heating power was experimental studied. The geyser boiling mode can make the Na-K alloy heat pipe work below 650 °C and reduce the start-up time. In the process of geyser boiling, the heat transfer quantity was increased by the boiling frequency and the amount of vapor produced in a single boiling. The boiling temperature had no obvious change with the increased of heating power, and the condenser section temperature increased with the heating power.Hongzhe ZhangFang YeHang GuoXiaoke YanMDPI AGarticlesodium-potassium alloygeyser boilingforced convection coolingstart-up performanceheat transfer performanceTechnologyTENEnergies, Vol 14, Iss 7582, p 7582 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sodium-potassium alloy geyser boiling forced convection cooling start-up performance heat transfer performance Technology T
spellingShingle	sodium-potassium alloy geyser boiling forced convection cooling start-up performance heat transfer performance Technology T Hongzhe Zhang Fang Ye Hang Guo Xiaoke Yan Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
description	In the geyser boiling mode, the working fluid state is divided into a boiling process and a quiet process, and the sodium-potassium (Na-K) alloy heat pipe can discontinuously transfer heat at each boiling. The overheating of the liquid working fluid at the bottom causes short-term boiling and forms slug bubble, the strong condensing ability quickly conducts heat from the evaporator section. And geyser boiling can occur before the working fluid forms continuous flow, so it transfers more heat at lower temperatures than natural convection cooling. In this study, the heat transfer process of a Na-K alloy heat pipe with forced convection cooling under different heating power was experimental studied. The geyser boiling mode can make the Na-K alloy heat pipe work below 650 °C and reduce the start-up time. In the process of geyser boiling, the heat transfer quantity was increased by the boiling frequency and the amount of vapor produced in a single boiling. The boiling temperature had no obvious change with the increased of heating power, and the condenser section temperature increased with the heating power.
format	article
author	Hongzhe Zhang Fang Ye Hang Guo Xiaoke Yan
author_facet	Hongzhe Zhang Fang Ye Hang Guo Xiaoke Yan
author_sort	Hongzhe Zhang
title	Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
title_short	Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
title_full	Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
title_fullStr	Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
title_full_unstemmed	Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis
title_sort	sodium-potassium alloy heat pipe under geyser boiling experimental study: heat transfer analysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b54930410425435282f96d193f261b5f
work_keys_str_mv	AT hongzhezhang sodiumpotassiumalloyheatpipeundergeyserboilingexperimentalstudyheattransferanalysis AT fangye sodiumpotassiumalloyheatpipeundergeyserboilingexperimentalstudyheattransferanalysis AT hangguo sodiumpotassiumalloyheatpipeundergeyserboilingexperimentalstudyheattransferanalysis AT xiaokeyan sodiumpotassiumalloyheatpipeundergeyserboilingexperimentalstudyheattransferanalysis
_version_	1718412370651381760

Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis

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