Experimental investigation on reactivation characteristics of liquid-metal heat pipes after hydrogen inactivation

Article Engineering, Environmental

A high temperature tubular reactor with hybrid concentrated solar and electric heat supply for steam methane reforming

Jing Ma et al.

Summary: Solar-powered steam methane reforming is an efficient way to generate hydrogen and reduce carbon dioxide emissions. The high-temperature heat pipe reactor (HTPR) proposed in this study combines concentrated solar energy and photovoltaic electricity to achieve a round-the-clock reforming process. Experimental results showed high methane conversion and hydrogen purity, as well as stable operation for 24 hours, demonstrating the potential of HTPR in resolving unstable hydrogen production by renewable energy.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Thermodynamics

CFD modeling of liquid-metal heat pipe and hydrogen inactivation simulation

Xiaoyuan Wang et al.

Summary: This study develops a comprehensive CFD model to visually reveal the effects of hydrogen permeation on heat transfer in liquid metal heat pipes (LMHPs). Experimental validation confirms the reliability of the model and demonstrates the negative impacts of hydrogen-buffer formation and hydrogen migration on heat transfer.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2022)

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Article Thermodynamics

Temperature response and thermal performance analysis of a super-long flexible thermosyphon for shallow geothermal utilization: Field test and numerical simulation

Hao Liu et al.

Summary: A super-long flexible thermosyphon (SFTS) was field-tested in drilling to evaluate its potential for shallow geothermal utilization, showing effective heat transfer and temperature recovery characteristics. The underground temperature was found to play a crucial role in the overall thermal performance of SFTS.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2022)

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Article Thermodynamics

Thermal performance of a medium temperature cesium heat pipe at different inclination angles

Hong-Xia Chen et al.

Summary: This study fabricates and tests a cesium heat pipe to present its thermal performance, verifies the applicability of theoretical calculation for transition temperature, describes the frozen startup process, and analyzes the effects of heating power and inclination angle on thermal performance. The results show excellent temperature uniformity of the cesium heat pipe at 68 degrees and suggest adding a heat shield to reduce temperature gradient at 80 degrees.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2022)

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Article Thermodynamics

Thermal management strategy for electronic chips based on combination of a flat-plate heat pipe and spray cooling

Juan Zhao et al.

Summary: With the development of electronic technology, a thermal management strategy combining flat-plate heat pipe (FPHP) and spray cooling was designed to improve heat dissipation performance. The best performance was achieved at a heat flux of 20-40 W/cm(2), with the lowest thermal resistance and highest thermal conductivity.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Thermodynamics

Investigation on a full-scale heat pipe heat exchanger in the ceramics industry for waste heat recovery

Hussam Jouhara et al.

Summary: The ceramics industry in Europe is the second largest energy-consuming sector, mainly relying on natural gas burners to generate heat. Roller hearth kiln technology is considered the most cost-effective solution for ceramic tile manufacturing.

ENERGY (2021)

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Article Energy & Fuels