Study on Startup Characteristics and Operation Limits of Medium-Temperature Dowtherm Heat Pipe

Xue Zhihu; Lu Qin; Qu Wei; Liu Chao; Yu Jijun

doi:10.13832/j.jnpe.2023.03.0173

Volume 44 Issue 3

Jun. 2023

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Xue Zhihu, Lu Qin, Qu Wei, Liu Chao, Yu Jijun. Study on Startup Characteristics and Operation Limits of Medium-Temperature Dowtherm Heat Pipe[J]. Nuclear Power Engineering, 2023, 44(3): 173-179. doi: 10.13832/j.jnpe.2023.03.0173

Citation:

Xue Zhihu, Lu Qin, Qu Wei, Liu Chao, Yu Jijun. Study on Startup Characteristics and Operation Limits of Medium-Temperature Dowtherm Heat Pipe[J]. Nuclear Power Engineering, 2023, 44(3): 173-179. doi: 10.13832/j.jnpe.2023.03.0173

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Study on Startup Characteristics and Operation Limits of Medium-Temperature Dowtherm Heat Pipe

doi: 10.13832/j.jnpe.2023.03.0173

China Academy of Aerospace Aerodynamics, Beijing, 100074, China

Received Date: 2022-06-21
Rev Recd Date: 2022-11-15
Publish Date: 2023-06-15

Abstract

Abstract

Based on the needs of passive heat removal system using medium-temperature heat pipes (MTHPs) and heat pipe heat exchangers (HPHEs) in the high temperature circuit of large nuclear power plant and the novel nuclear reactor, and promoting their applications in industrial heat transfer and energy conservation at medium-grade temperature zone, a study of start-up characteristics and operation limit features of a MTHP (using Dowtherm-A as working medium) was conducted through the experimental method of testing the temperature response. The startup test results show that the startup temperature of the Dowtherm-A heat pipe (DHP) is about 200℃ and the DHP can start up completely before 250℃. The limit test results demonstrate that the operation limit temperature of the DHP is 497℃ and it will work stably over 400℃ if its condenser is well cooled.
- Nuclear reactor,
- Moderate temperature heat pipe,
- Dowtherm,
- Heat pipe heat exchanger,
- Operation limits,
- Waste heat recovery or utilizing

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References(29)

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